encoder display

common_features.mk

@@ -234,6 +234,8 @@ ifeq ($(strip $(LEADER_ENABLE)), yes)
   OPT_DEFS += -DLEADER_ENABLE
 endif
 
+include $(DRIVER_PATH)/qwiic/qwiic.mk
+
 QUANTUM_SRC:= \
     $(QUANTUM_DIR)/quantum.c \
     $(QUANTUM_DIR)/keymap_common.c \

drivers/arm/i2c_master.c

@@ -43,7 +43,12 @@ static const I2CConfig i2cconfig = {
 
 void i2c_init(void)
 {
-  palSetGroupMode(GPIOB, GPIOB_PIN6 | GPIOB_PIN7, 0, PAL_MODE_INPUT); // Try releasing special pins for a short time
+  //palSetGroupMode(GPIOB, GPIOB_PIN6 | GPIOB_PIN7, 0, PAL_MODE_INPUT);
+
+  // Try releasing special pins for a short time
+  palSetPadMode(GPIOB, 6, PAL_MODE_INPUT);
+  palSetPadMode(GPIOB, 7, PAL_MODE_INPUT);
+
   chThdSleepMilliseconds(10);
 
   palSetPadMode(GPIOB, 6, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
@@ -74,6 +79,10 @@ uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t ti
   return i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout));
 }
 
+uint8_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length) {
+  return i2cMasterTransmitTimeout(&I2C_DRIVER, address/2, tx_body, tx_length, rx_body, rx_length, MS2ST(100));
+}
+
 uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_address = devaddr;

drivers/arm/i2c_master.h

@@ -34,6 +34,7 @@ void i2c_init(void);
 uint8_t i2c_start(uint8_t address);
 uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
 uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+uint8_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length);
 uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
 uint8_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
 uint8_t i2c_stop(uint16_t timeout);

drivers/qwiic/joystiic.c

@@ -0,0 +1,125 @@
+/* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "joystiic.h"
+#include "print.h"
+#include "action.h"
+
+#define JOYSTIIC_DEFAULT_ADDR       0x20
+#define JOYSTIIC_COMMAND_HORIZONTAL 0x00
+#define JOYSTIIC_COMMAND_VERTICAL   0x02
+#define JOYSTIIC_COMMAND_BUTTON     0x04
+
+#define JOYSTIIC_CENTER 512
+#define JOYSTIIC_DEADZONE 200
+
+uint16_t joystiic_horizontal;
+uint16_t joystiic_vertical;
+bool joystiic_button;
+
+uint8_t joystiic_tx[1];
+uint8_t joystiic_rx_horizontal[2];
+uint8_t joystiic_rx_vertical[2];
+uint8_t joystiic_rx_button[1];
+
+bool joystiic_triggered[5] = {0};
+
+void joystiic_init(void) {
+  i2c_init();
+  i2c_start(JOYSTIIC_DEFAULT_ADDR);
+}
+
+void joystiic_update(uint16_t horizontal, uint16_t vertical, bool button) {
+  joystiic_update_kb(horizontal, vertical, button);
+  joystiic_update_user(horizontal, vertical, button);
+}
+
+__attribute__ ((weak))
+void joystiic_update_kb(uint16_t horizontal, uint16_t vertical, bool button) { }
+
+__attribute__ ((weak))
+void joystiic_update_user(uint16_t horizontal, uint16_t vertical, bool button) { }
+
+void joystiic_trigger(uint8_t trigger, bool active) {
+  joystiic_trigger_kb(trigger, active);
+  joystiic_trigger_user(trigger, active);
+}
+
+__attribute__ ((weak))
+void joystiic_trigger_kb(uint8_t trigger, bool active) { }
+
+__attribute__ ((weak))
+void joystiic_trigger_user(uint8_t trigger, bool active) { }
+
+void joystiic_trigger_if_not(uint8_t trigger, bool active) {
+  if (joystiic_triggered[trigger] != active) {
+    joystiic_triggered[trigger] = active;
+    joystiic_trigger(trigger, active);
+  }
+}
+
+void joystiic_task(void) {
+  // get horizontal axis
+  joystiic_tx[0] = JOYSTIIC_COMMAND_HORIZONTAL;
+
+  if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
+    joystiic_tx, 1,
+    joystiic_rx_horizontal, 2
+  )) {
+    printf("error hori\n");
+  }
+
+  joystiic_horizontal = ((uint16_t)joystiic_rx_horizontal[0] << 8) | joystiic_rx_horizontal[1];
+
+  joystiic_trigger_if_not(JOYSTIIC_LEFT, joystiic_horizontal > (JOYSTIIC_CENTER + JOYSTIIC_DEADZONE));
+  joystiic_trigger_if_not(JOYSTIIC_RIGHT, joystiic_horizontal < (JOYSTIIC_CENTER - JOYSTIIC_DEADZONE));
+
+  // get vertical axis
+  joystiic_tx[0] = JOYSTIIC_COMMAND_VERTICAL;
+  if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
+    joystiic_tx, 1,
+    joystiic_rx_vertical, 2
+  )) {
+    printf("error vert\n");
+  }
+
+  joystiic_vertical = ((uint16_t)joystiic_rx_vertical[0] << 8) | joystiic_rx_vertical[1];
+
+  joystiic_trigger_if_not(JOYSTIIC_UP, joystiic_vertical > (JOYSTIIC_CENTER + JOYSTIIC_DEADZONE));
+  joystiic_trigger_if_not(JOYSTIIC_DOWN, joystiic_vertical < (JOYSTIIC_CENTER - JOYSTIIC_DEADZONE));
+
+  // get button press
+  joystiic_tx[0] = JOYSTIIC_COMMAND_BUTTON;
+  if (MSG_OK != i2c_transmit_receive(JOYSTIIC_DEFAULT_ADDR << 1,
+    joystiic_tx, 1,
+    joystiic_rx_button, 1
+  )) {
+    printf("error vert\n");
+  }
+
+  joystiic_button = !joystiic_rx_button[0];
+
+  joystiic_trigger_if_not(JOYSTIIC_PRESS, joystiic_button);
+
+  joystiic_update(joystiic_horizontal, joystiic_vertical, joystiic_button);
+
+  //printf("%d\n", joystiic[0]);
+
+  // SEND_STRING("H: ");
+  // send_word(joystiic_rx_horizontal[0]);
+  // tap_code(KC_SPACE);
+  // send_word(joystiic_rx_horizontal[1]);
+  // tap_code(KC_SPACE);
+}

drivers/qwiic/joystiic.h

@@ -0,0 +1,34 @@
+/* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "qwiic.h"
+
+enum {
+  JOYSTIIC_LEFT,
+  JOYSTIIC_RIGHT,
+  JOYSTIIC_UP,
+  JOYSTIIC_DOWN,
+  JOYSTIIC_PRESS
+};
+
+void joystiic_update_kb(uint16_t horizontal, uint16_t vertical, bool button);
+void joystiic_update_user(uint16_t horizontal, uint16_t vertical, bool button);
+void joystiic_trigger_kb(uint8_t trigger, bool active);
+void joystiic_trigger_user(uint8_t trigger, bool active);
+
+void joystiic_init(void);
+void joystiic_task(void);

drivers/qwiic/micro_oled.c

@@ -0,0 +1,469 @@
+/* Jim Lindblom @ SparkFun Electronics
+ * October 26, 2014
+ * https://github.com/sparkfun/Micro_OLED_Breakout/tree/master/Firmware/Arduino/libraries/SFE_MicroOLED
+ *
+ * Modified by:
+ * Emil Varughese @ Edwin Robotics Pvt. Ltd.
+ * July 27, 2015
+ * https://github.com/emil01/SparkFun_Micro_OLED_Arduino_Library/
+ *
+ * This code was heavily based around the MicroView library, written by GeekAmmo
+ * (https://github.com/geekammo/MicroView-Arduino-Library).
+ *
+ * Adapted for QMK by:
+ * Jack Humbert <jack.humb@gmail.com>
+ * October 11, 2018
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "micro_oled.h"
+#include <stdlib.h>
+#include "util/font5x7.h"
+#include "util/font8x16.h"
+#include "string.h"
+
+#define TOTALFONTS 2
+const unsigned char * fonts_pointer[]= { font5x7, font8x16 };
+
+uint8_t foreColor,drawMode,fontWidth, fontHeight, fontType, fontStartChar, fontTotalChar, cursorX, cursorY;
+uint16_t fontMapWidth;
+
+#define _BV(x) (1 << (x))
+#define swap(a, b) { uint8_t t = a; a = b; b = t; }
+
+uint8_t micro_oled_transfer_buffer[20];
+static uint8_t micro_oled_screen_current[384] = { 0 };
+static uint8_t micro_oled_screen_buffer[] = {
+/* LCD Memory organised in 64 horizontal pixel and 6 rows of byte
+   B  B .............B  -----
+   y  y .............y        \
+   t  t .............t         \
+   e  e .............e          \
+   0  1 .............63          \
+                                  \
+   D0 D0.............D0            \
+   D1 D1.............D1            / ROW 0
+   D2 D2.............D2           /
+   D3 D3.............D3          /
+   D4 D4.............D4         /
+   D5 D5.............D5        /
+   D6 D6.............D6       /
+   D7 D7.............D7  ----
+  */
+
+// QMK Logo - generated at http://www.majer.ch/lcd/adf_bitmap.php
+
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0xF0, 0xF0, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0x00, 0x00,
+0x00, 0xF0, 0xF0, 0x00, 0x00, 0x00, 0xF0, 0xF0, 0x00, 0x00,
+0x00, 0xF0, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x60, 0x60, 0x60,
+0xF8, 0xFE, 0xFE, 0xFF, 0xFF, 0xFF, 0x1F, 0x1F, 0xFF, 0xFF,
+0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x1F, 0xFF, 0xFF, 0xFF,
+0xFF, 0xFF, 0xFF, 0xFF, 0x1F, 0x1F, 0xFF, 0xFF, 0xFF, 0xFE,
+0xFE, 0xF8, 0x60, 0x60, 0x60, 0x60, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x8C, 0x8C, 0x8C, 0x8C, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00,
+0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00,
+0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x8C, 0x8C, 0x8C, 0x8C,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x31, 0x31, 0x31, 0x31, 0xFF, 0xFF,
+0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xF8, 0xF1, 0xE3, 0xE7, 0xCF,
+0xCF, 0xCF, 0xCF, 0x00, 0x00, 0xCF, 0xCF, 0xCF, 0xC7, 0xE7,
+0xE3, 0xF1, 0xF8, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+0x31, 0x31, 0x31, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x06,
+0x06, 0x06, 0x1F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF8, 0xF8, 0xFF,
+0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+0xFF, 0x7F, 0x7F, 0x1F, 0x06, 0x06, 0x06, 0x06, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00,
+0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0x00, 0x00,
+0x00, 0x0F, 0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00
+};
+
+void micro_oled_init(void) {
+
+  i2c_init();
+  i2c_start(I2C_ADDRESS_SA0_1);
+
+  // Display Init sequence for 64x48 OLED module
+  send_command(DISPLAYOFF);      // 0xAE
+
+  send_command(SETDISPLAYCLOCKDIV);  // 0xD5
+  send_command(0x80);          // the suggested ratio 0x80
+
+  send_command(SETMULTIPLEX);      // 0xA8
+  send_command(0x2F);
+
+  send_command(SETDISPLAYOFFSET);    // 0xD3
+  send_command(0x0);         // no offset
+
+  send_command(SETSTARTLINE | 0x0);  // line #0
+
+  send_command(CHARGEPUMP);      // enable charge pump
+  send_command(0x14);
+
+  send_command(NORMALDISPLAY);     // 0xA6
+  send_command(DISPLAYALLONRESUME);  // 0xA4
+
+  send_command(SEGREMAP | 0x1);
+  send_command(COMSCANDEC);
+
+  send_command(SETCOMPINS);      // 0xDA
+  send_command(0x12);
+
+  send_command(SETCONTRAST);     // 0x81
+  send_command(0x8F);
+
+  send_command(SETPRECHARGE);      // 0xd9
+  send_command(0xF1);
+
+  send_command(SETVCOMDESELECT);     // 0xDB
+  send_command(0x40);
+
+  send_command(DISPLAYON);       //--turn on oled panel
+  clear_screen();           // Erase hardware memory inside the OLED controller to avoid random data in memory.
+  send_buffer();
+}
+
+void send_command(uint8_t command) {
+  micro_oled_transfer_buffer[0] = I2C_COMMAND;
+  micro_oled_transfer_buffer[1] = command;
+  i2c_transmit(I2C_ADDRESS_SA0_1 << 1, micro_oled_transfer_buffer, 2, 100);
+}
+
+void send_data(uint8_t data) {
+  micro_oled_transfer_buffer[0] = I2C_DATA;
+  micro_oled_transfer_buffer[1] = data;
+  i2c_transmit(I2C_ADDRESS_SA0_1 << 1, micro_oled_transfer_buffer, 2, 100);
+}
+
+/** \brief Set SSD1306 page address.
+    Send page address command and address to the SSD1306 OLED controller.
+*/
+void set_page_address(uint8_t address) {
+  address = (0xB0 | address);
+  send_command(address);
+}
+
+/** \brief Set SSD1306 column address.
+    Send column address command and address to the SSD1306 OLED controller.
+*/
+void set_column_address(uint8_t address) {
+  send_command( ( 0x10 | (address >> 4) ) + 0x02 );
+  send_command( 0x0f & address );
+}
+
+/** \brief Clear SSD1306's memory.
+    To clear GDRAM inside the LCD controller.
+*/
+void clear_screen(void) {
+  for (int i=0;i<8; i++) {
+    set_page_address(i);
+    set_column_address(0);
+    for (int j=0; j<0x80; j++) {
+      send_data(0);
+    }
+  }
+}
+
+/** \brief Clear SSD1306's memory.
+    To clear GDRAM inside the LCD controller.
+*/
+void clear_buffer(void) {
+  memset(micro_oled_screen_buffer, 0, 384);
+}
+
+/** \brief Invert display.
+    The PIXEL_ON color of the display will turn to PIXEL_OFF and the PIXEL_OFF will turn to PIXEL_ON.
+*/
+void invert_screen(bool invert) {
+  if (invert) {
+    send_command(INVERTDISPLAY);
+  } else {
+    send_command(NORMALDISPLAY);
+  }
+}
+
+/** \brief Set contrast.
+    OLED contract value from 0 to 255. Note: Contrast level is not very obvious.
+*/
+void set_contrast(uint8_t contrast) {
+  send_command(SETCONTRAST);     // 0x81
+  send_command(contrast);
+}
+
+/** \brief Transfer display buffer.
+  Sends the updated buffer to the controller - the current status is checked before to save i2c exectution time
+*/
+void send_buffer(void) {
+  uint8_t i, j;
+
+  uint8_t page_addr = 0xFF;
+  for (i = 0; i < 6; i++) {
+    uint8_t col_addr = 0xFF;
+    for (j = 0; j < 0x40; j++) {
+      if (micro_oled_screen_buffer[i*0x40+j] != micro_oled_screen_current[i*0x40+j]) {
+        if (page_addr != i) {
+          set_page_address(i);
+        }
+        if (col_addr != j) {
+          set_column_address(j);
+        }
+        send_data(micro_oled_screen_buffer[i*0x40+j]);
+        micro_oled_screen_current[i*0x40+j] = micro_oled_screen_buffer[i*0x40+j];
+        col_addr = j + 1;
+      }
+    }
+  }
+}
+
+/** \brief Draw pixel with color and mode.
+  Draw color pixel in the screen buffer's x,y position with NORM or XOR draw mode.
+*/
+void draw_pixel(uint8_t x, uint8_t y, uint8_t color, uint8_t mode) {
+  if ((x<0) ||  (x>=LCDWIDTH) || (y<0) || (y>=LCDHEIGHT))
+    return;
+
+  if (mode == XOR) {
+    if (color == PIXEL_ON)
+      micro_oled_screen_buffer[x + (y/8)*LCDWIDTH] ^= _BV((y%8));
+  } else {
+    if (color == PIXEL_ON)
+      micro_oled_screen_buffer[x + (y/8)*LCDWIDTH] |= _BV((y%8));
+    else
+      micro_oled_screen_buffer[x + (y/8)*LCDWIDTH] &= ~_BV((y%8));
+  }
+}
+
+/** \brief Draw line with color and mode.
+Draw line using color and mode from x0,y0 to x1,y1 of the screen buffer.
+*/
+void draw_line(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color, uint8_t mode) {
+  uint8_t steep = abs(y1 - y0) > abs(x1 - x0);
+  if (steep) {
+    swap(x0, y0);
+    swap(x1, y1);
+  }
+
+  if (x0 > x1) {
+    swap(x0, x1);
+    swap(y0, y1);
+  }
+
+  uint8_t dx, dy;
+  dx = x1 - x0;
+  dy = abs(y1 - y0);
+
+  int8_t err = dx / 2;
+  int8_t ystep;
+
+  if (y0 < y1) {
+    ystep = 1;
+  } else {
+    ystep = -1;}
+
+  for (; x0<x1; x0++) {
+    if (steep) {
+      draw_pixel(y0, x0, color, mode);
+    } else {
+      draw_pixel(x0, y0, color, mode);
+    }
+    err -= dy;
+    if (err < 0) {
+      y0 += ystep;
+      err += dx;
+    }
+  }
+}
+
+/** \brief Draw horizontal line with color and mode.
+Draw horizontal line using color and mode from x,y to x+width,y of the screen buffer.
+*/
+void draw_line_hori(uint8_t x, uint8_t y, uint8_t width, uint8_t color, uint8_t mode) {
+  draw_line(x,y,x+width,y,color,mode);
+}
+
+/** \brief Draw vertical line.
+Draw vertical line using current fore color and current draw mode from x,y to x,y+height of the screen buffer.
+*/
+void draw_line_vert(uint8_t x, uint8_t y, uint8_t height, bool color, uint8_t mode) {
+  draw_line(x,y,x,y+height,color,mode);
+}
+
+/** \brief Draw rectangle with color and mode.
+Draw rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
+*/
+void draw_rect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode) {
+  uint8_t tempHeight;
+
+  draw_line_hori(x,y, width, color, mode);
+  draw_line_hori(x,y+height-1, width, color, mode);
+
+  tempHeight=height-2;
+
+  // skip drawing vertical lines to avoid overlapping of pixel that will
+  // affect XOR plot if no pixel in between horizontal lines
+  if (tempHeight<1) return;
+
+  draw_line_vert(x,y+1, tempHeight, color, mode);
+  draw_line_vert(x+width-1, y+1, tempHeight, color, mode);
+}
+
+/** \brief Draw rectangle with color and mode.
+Draw rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
+*/
+void draw_rect_soft(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode) {
+  uint8_t tempHeight;
+
+  draw_line_hori(x+1,y, width-2, color, mode);
+  draw_line_hori(x+1,y+height-1, width-2, color, mode);
+
+  tempHeight=height-2;
+
+  // skip drawing vertical lines to avoid overlapping of pixel that will
+  // affect XOR plot if no pixel in between horizontal lines
+  if (tempHeight<1) return;
+
+  draw_line_vert(x,y+1, tempHeight, color, mode);
+  draw_line_vert(x+width-1, y+1, tempHeight, color, mode);
+}
+
+/** \brief Draw filled rectangle with color and mode.
+Draw filled rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
+*/
+void draw_rect_filled(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode) {
+  // TODO - need to optimise the memory map draw so that this function will not call pixel one by one
+  for (int i=x; i<x+width;i++) {
+    draw_line_vert(i,y, height, color, mode);
+  }
+}
+
+/** \brief Draw filled rectangle with color and mode.
+Draw filled rectangle using color and mode from x,y to x+width,y+height of the screen buffer.
+*/
+void draw_rect_filled_soft(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode) {
+  // TODO - need to optimise the memory map draw so that this function will not call pixel one by one
+  for (int i=x; i<x+width;i++) {
+    if (i == x || i == (x + width - 1))
+      draw_line_vert(i, y+1, height-2, color, mode);
+    else
+      draw_line_vert(i, y, height, color, mode);
+  }
+}
+
+/** \brief Draw character with color and mode.
+  Draw character c using color and draw mode at x,y.
+*/
+void draw_char(uint8_t x, uint8_t y, uint8_t c, uint8_t color, uint8_t mode, uint8_t font) {
+  // TODO - New routine to take font of any height, at the moment limited to font height in multiple of 8 pixels
+
+  uint8_t rowsToDraw,row, tempC;
+  uint8_t i,j,temp;
+  uint16_t charPerBitmapRow,charColPositionOnBitmap,charRowPositionOnBitmap,charBitmapStartPosition;
+
+  if ((font>=TOTALFONTS) || (font<0))
+    return;
+
+  uint8_t fontType = font;
+  uint8_t fontWidth = pgm_read_byte(fonts_pointer[fontType]+0);
+  uint8_t fontHeight = pgm_read_byte(fonts_pointer[fontType]+1);
+  uint8_t fontStartChar = pgm_read_byte(fonts_pointer[fontType]+2);
+  uint8_t fontTotalChar = pgm_read_byte(fonts_pointer[fontType]+3);
+  uint16_t fontMapWidth = (pgm_read_byte(fonts_pointer[fontType]+4)*100)+pgm_read_byte(fonts_pointer[fontType]+5); // two bytes values into integer 16
+
+  if ((c<fontStartChar) || (c>(fontStartChar+fontTotalChar-1)))   // no bitmap for the required c
+    return;
+
+  tempC=c-fontStartChar;
+
+  // each row (in datasheet is call page) is 8 bits high, 16 bit high character will have 2 rows to be drawn
+  rowsToDraw=fontHeight/8;  // 8 is LCD's page size, see SSD1306 datasheet
+  if (rowsToDraw<=1) rowsToDraw=1;
+
+  // the following draw function can draw anywhere on the screen, but SLOW pixel by pixel draw
+  if (rowsToDraw==1) {
+    for  (i=0;i<fontWidth+1;i++) {
+      if (i==fontWidth) // this is done in a weird way because for 5x7 font, there is no margin, this code add a margin after col 5
+      temp=0;
+      else
+      temp=pgm_read_byte(fonts_pointer[fontType]+FONTHEADERSIZE+(tempC*fontWidth)+i);
+
+      for (j=0;j<8;j++) {     // 8 is the LCD's page height (see datasheet for explanation)
+        if (temp & 0x1) {
+          draw_pixel(x+i, y+j, color,mode);
+        }
+        else {
+          draw_pixel(x+i, y+j, !color,mode);
+        }
+
+        temp >>=1;
+      }
+    }
+    return;
+  }
+
+  // font height over 8 bit
+  // take character "0" ASCII 48 as example
+  charPerBitmapRow = fontMapWidth/fontWidth;  // 256/8 =32 char per row
+  charColPositionOnBitmap = tempC % charPerBitmapRow;  // =16
+  charRowPositionOnBitmap = (int)(tempC/charPerBitmapRow); // =1
+  charBitmapStartPosition = (charRowPositionOnBitmap * fontMapWidth * (fontHeight/8)) + (charColPositionOnBitmap * fontWidth) ;
+
+  // each row on LCD is 8 bit height (see datasheet for explanation)
+  for(row=0;row<rowsToDraw;row++) {
+    for (i=0; i<fontWidth;i++) {
+      temp=pgm_read_byte(fonts_pointer[fontType]+FONTHEADERSIZE+(charBitmapStartPosition+i+(row*fontMapWidth)));
+      for (j=0;j<8;j++) {     // 8 is the LCD's page height (see datasheet for explanation)
+        if (temp & 0x1) {
+          draw_pixel(x+i,y+j+(row*8), color, mode);
+        }
+        else {
+          draw_pixel(x+i,y+j+(row*8), !color, mode);
+        }
+        temp >>=1;
+      }
+    }
+  }
+
+}
+
+void draw_string(uint8_t x, uint8_t y, char * string, uint8_t color, uint8_t mode, uint8_t font) {
+
+  if ((font>=TOTALFONTS) || (font<0))
+    return;
+
+  uint8_t fontType = font;
+  uint8_t fontWidth = pgm_read_byte(fonts_pointer[fontType]+0);
+
+  uint8_t cur_x = x;
+  for (int i = 0; i < strlen(string); i++) {
+    draw_char(cur_x, y, string[i], color, mode, font);
+    cur_x += fontWidth + 1;
+  }
+
+}

drivers/qwiic/micro_oled.h

@@ -0,0 +1,129 @@
+/* Jim Lindblom @ SparkFun Electronics
+ * October 26, 2014
+ * https://github.com/sparkfun/Micro_OLED_Breakout/tree/master/Firmware/Arduino/libraries/SFE_MicroOLED
+ *
+ * Modified by:
+ * Emil Varughese @ Edwin Robotics Pvt. Ltd.
+ * July 27, 2015
+ * https://github.com/emil01/SparkFun_Micro_OLED_Arduino_Library/
+ *
+ * This code was heavily based around the MicroView library, written by GeekAmmo
+ * (https://github.com/geekammo/MicroView-Arduino-Library).
+ *
+ * Adapted for QMK by:
+ * Jack Humbert <jack.humb@gmail.com>
+ * October 11, 2018
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "qwiic.h"
+
+void micro_oled_init(void);
+
+void send_command(uint8_t command);
+void send_data(uint8_t data);
+void set_page_address(uint8_t address);
+void set_column_address(uint8_t address);
+void clear_screen(void);
+void clear_buffer(void);
+void send_buffer(void);
+void draw_pixel(uint8_t x, uint8_t y, uint8_t color, uint8_t mode);
+void draw_line(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color, uint8_t mode);
+void draw_line_hori(uint8_t x, uint8_t y, uint8_t width, uint8_t color, uint8_t mode);
+void draw_line_vert(uint8_t x, uint8_t y, uint8_t height, bool color, uint8_t mode);
+void draw_rect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode);
+void draw_rect_soft(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode);
+void draw_rect_filled(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode);
+void draw_rect_filled_soft(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t mode);
+void draw_char(uint8_t x, uint8_t y, uint8_t c, uint8_t color, uint8_t mode, uint8_t font);
+void draw_string(uint8_t x, uint8_t y, char * string, uint8_t color, uint8_t mode, uint8_t font);
+
+#define I2C_ADDRESS_SA0_0 0b0111100
+#define I2C_ADDRESS_SA0_1 0b0111101
+#define I2C_COMMAND 0x00
+#define I2C_DATA 0x40
+
+#define PIXEL_OFF 0
+#define PIXEL_ON  1
+
+#define LCDWIDTH      64
+#define LCDHEIGHT     48
+#define FONTHEADERSIZE    6
+
+#define NORM        0
+#define XOR         1
+
+#define PAGE        0
+#define ALL         1
+
+#define WIDGETSTYLE0      0
+#define WIDGETSTYLE1      1
+#define WIDGETSTYLE2      2
+
+#define SETCONTRAST     0x81
+#define DISPLAYALLONRESUME  0xA4
+#define DISPLAYALLON    0xA5
+#define NORMALDISPLAY     0xA6
+#define INVERTDISPLAY     0xA7
+#define DISPLAYOFF      0xAE
+#define DISPLAYON       0xAF
+#define SETDISPLAYOFFSET  0xD3
+#define SETCOMPINS      0xDA
+#define SETVCOMDESELECT   0xDB
+#define SETDISPLAYCLOCKDIV  0xD5
+#define SETPRECHARGE    0xD9
+#define SETMULTIPLEX    0xA8
+#define SETLOWCOLUMN    0x00
+#define SETHIGHCOLUMN     0x10
+#define SETSTARTLINE    0x40
+#define MEMORYMODE      0x20
+#define COMSCANINC      0xC0
+#define COMSCANDEC      0xC8
+#define SEGREMAP      0xA0
+#define CHARGEPUMP      0x8D
+#define EXTERNALVCC     0x01
+#define SWITCHCAPVCC    0x02
+
+// Scroll
+#define ACTIVATESCROLL          0x2F
+#define DEACTIVATESCROLL        0x2E
+#define SETVERTICALSCROLLAREA       0xA3
+#define RIGHTHORIZONTALSCROLL       0x26
+#define LEFT_HORIZONTALSCROLL       0x27
+#define VERTICALRIGHTHORIZONTALSCROLL 0x29
+#define VERTICALLEFTHORIZONTALSCROLL  0x2A
+
+typedef enum CMD {
+  CMD_CLEAR,      //0
+  CMD_INVERT,     //1
+  CMD_CONTRAST,   //2
+  CMD_DISPLAY,    //3
+  CMD_SETCURSOR,    //4
+  CMD_PIXEL,      //5
+  CMD_LINE,     //6
+  CMD_LINEH,      //7
+  CMD_LINEV,      //8
+  CMD_RECT,     //9
+  CMD_RECTFILL,   //10
+  CMD_CIRCLE,     //11
+  CMD_CIRCLEFILL,   //12
+  CMD_DRAWCHAR,   //13
+  CMD_DRAWBITMAP,   //14
+  CMD_GETLCDWIDTH,  //15
+  CMD_GETLCDHEIGHT, //16
+  CMD_SETCOLOR,   //17
+  CMD_SETDRAWMODE   //18
+} commCommand_t;

drivers/qwiic/qwiic.c

@@ -0,0 +1,31 @@
+/* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "qwiic.h"
+
+void qwiic_init(void) {
+  #ifdef QWIIC_JOYSTIIC_ENABLE
+    joystiic_init();
+  #endif
+  #ifdef QWIIC_MICRO_OLED_ENABLE
+    micro_oled_init();
+  #endif
+}
+
+void qwiic_task(void) {
+  #ifdef QWIIC_JOYSTIIC_ENABLE
+    joystiic_task();
+  #endif
+}

drivers/qwiic/qwiic.h

@@ -0,0 +1,28 @@
+/* Copyright 2018 Jack Humbert <jack.humb@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "i2c_master.h"
+
+#ifdef QWIIC_JOYSTIIC_ENABLE
+  #include "joystiic.h"
+#endif
+#ifdef QWIIC_MICRO_OLED_ENABLE
+  #include "micro_oled.h"
+#endif
+
+void qwiic_init(void);
+void qwiic_task(void);

drivers/qwiic/qwiic.mk

@@ -0,0 +1,18 @@
+ifneq ($(strip $(QWIIC_ENABLE)),)
+  COMMON_VPATH += $(DRIVER_PATH)/qwiic
+  OPT_DEFS += -DQWIIC_ENABLE
+  SRC += qwiic.c
+  ifeq ($(filter "i2c_master.c", $(SRC)),)
+    SRC += i2c_master.c
+  endif
+endif
+
+ifneq ($(filter JOYSTIIC, $(QWIIC_ENABLE)),)
+  OPT_DEFS += -DQWIIC_JOYSTIIC_ENABLE
+  SRC += joystiic.c
+endif
+
+ifneq ($(filter MICRO_OLED, $(QWIIC_ENABLE)),)
+  OPT_DEFS += -DQWIIC_MICRO_OLED_ENABLE
+  SRC += micro_oled.c
+endif

drivers/qwiic/readme.md

@@ -0,0 +1,7 @@
+# Qwiic Devices
+
+[More info on Sparkfun's Qwiic Connect System](https://www.sparkfun.com/qwiic)
+
+Currently supported devices:
+
+* [Joystiic](https://www.sparkfun.com/products/14656)

drivers/qwiic/util/font5x7.h

@@ -0,0 +1,288 @@
+/******************************************************************************
+font5x7.h
+Definition for small font
+
+This file was imported from the MicroView library, written by GeekAmmo
+(https://github.com/geekammo/MicroView-Arduino-Library), and released under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Modified by:
+Emil Varughese @ Edwin Robotics Pvt. Ltd.
+July 27, 2015
+https://github.com/emil01/SparkFun_Micro_OLED_Arduino_Library/
+
+******************************************************************************/
+#pragma once
+
+#include "progmem.h"
+
+// Standard ASCII 5x7 font
+static const unsigned char font5x7[] PROGMEM = {
+    // first row defines - FONTWIDTH, FONTHEIGHT, ASCII START CHAR, TOTAL CHARACTERS, FONT MAP WIDTH HIGH, FONT MAP WIDTH LOW (2,56 meaning 256)
+    5,8,0,255,12,75,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x3E, 0x5B, 0x4F, 0x5B, 0x3E,
+    0x3E, 0x6B, 0x4F, 0x6B, 0x3E,
+    0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
+    0x18, 0x3C, 0x7E, 0x3C, 0x18,
+    0x1C, 0x57, 0x7D, 0x57, 0x1C,
+    0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
+    0x00, 0x18, 0x3C, 0x18, 0x00,
+    0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
+    0x00, 0x18, 0x24, 0x18, 0x00,
+    0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
+    0x30, 0x48, 0x3A, 0x06, 0x0E,
+    0x26, 0x29, 0x79, 0x29, 0x26,
+    0x40, 0x7F, 0x05, 0x05, 0x07,
+    0x40, 0x7F, 0x05, 0x25, 0x3F,
+    0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
+    0x7F, 0x3E, 0x1C, 0x1C, 0x08,
+    0x08, 0x1C, 0x1C, 0x3E, 0x7F,
+    0x14, 0x22, 0x7F, 0x22, 0x14,
+    0x5F, 0x5F, 0x00, 0x5F, 0x5F,
+    0x06, 0x09, 0x7F, 0x01, 0x7F,
+    0x00, 0x66, 0x89, 0x95, 0x6A,
+    0x60, 0x60, 0x60, 0x60, 0x60,
+    0x94, 0xA2, 0xFF, 0xA2, 0x94,
+    0x08, 0x04, 0x7E, 0x04, 0x08,
+    0x10, 0x20, 0x7E, 0x20, 0x10,
+    0x08, 0x08, 0x2A, 0x1C, 0x08,
+    0x08, 0x1C, 0x2A, 0x08, 0x08,
+    0x1E, 0x10, 0x10, 0x10, 0x10,
+    0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
+    0x30, 0x38, 0x3E, 0x38, 0x30,
+    0x06, 0x0E, 0x3E, 0x0E, 0x06,
+    0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x5F, 0x00, 0x00,
+    0x00, 0x07, 0x00, 0x07, 0x00,
+    0x14, 0x7F, 0x14, 0x7F, 0x14,
+    0x24, 0x2A, 0x7F, 0x2A, 0x12,
+    0x23, 0x13, 0x08, 0x64, 0x62,
+    0x36, 0x49, 0x56, 0x20, 0x50,
+    0x00, 0x08, 0x07, 0x03, 0x00,
+    0x00, 0x1C, 0x22, 0x41, 0x00,
+    0x00, 0x41, 0x22, 0x1C, 0x00,
+    0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
+    0x08, 0x08, 0x3E, 0x08, 0x08,
+    0x00, 0x80, 0x70, 0x30, 0x00,
+    0x08, 0x08, 0x08, 0x08, 0x08,
+    0x00, 0x00, 0x60, 0x60, 0x00,
+    0x20, 0x10, 0x08, 0x04, 0x02,
+    0x3E, 0x51, 0x49, 0x45, 0x3E,
+    0x00, 0x42, 0x7F, 0x40, 0x00,
+    0x72, 0x49, 0x49, 0x49, 0x46,
+    0x21, 0x41, 0x49, 0x4D, 0x33,
+    0x18, 0x14, 0x12, 0x7F, 0x10,
+    0x27, 0x45, 0x45, 0x45, 0x39,
+    0x3C, 0x4A, 0x49, 0x49, 0x31,
+    0x41, 0x21, 0x11, 0x09, 0x07,
+    0x36, 0x49, 0x49, 0x49, 0x36,
+    0x46, 0x49, 0x49, 0x29, 0x1E,
+    0x00, 0x00, 0x14, 0x00, 0x00,
+    0x00, 0x40, 0x34, 0x00, 0x00,
+    0x00, 0x08, 0x14, 0x22, 0x41,
+    0x14, 0x14, 0x14, 0x14, 0x14,
+    0x00, 0x41, 0x22, 0x14, 0x08,
+    0x02, 0x01, 0x59, 0x09, 0x06,
+    0x3E, 0x41, 0x5D, 0x59, 0x4E,
+    0x7C, 0x12, 0x11, 0x12, 0x7C,
+    0x7F, 0x49, 0x49, 0x49, 0x36,
+    0x3E, 0x41, 0x41, 0x41, 0x22,
+    0x7F, 0x41, 0x41, 0x41, 0x3E,
+    0x7F, 0x49, 0x49, 0x49, 0x41,
+    0x7F, 0x09, 0x09, 0x09, 0x01,
+    0x3E, 0x41, 0x41, 0x51, 0x73,
+    0x7F, 0x08, 0x08, 0x08, 0x7F,
+    0x00, 0x41, 0x7F, 0x41, 0x00,
+    0x20, 0x40, 0x41, 0x3F, 0x01,
+    0x7F, 0x08, 0x14, 0x22, 0x41,
+    0x7F, 0x40, 0x40, 0x40, 0x40,
+    0x7F, 0x02, 0x1C, 0x02, 0x7F,
+    0x7F, 0x04, 0x08, 0x10, 0x7F,
+    0x3E, 0x41, 0x41, 0x41, 0x3E,
+    0x7F, 0x09, 0x09, 0x09, 0x06,
+    0x3E, 0x41, 0x51, 0x21, 0x5E,
+    0x7F, 0x09, 0x19, 0x29, 0x46,
+    0x26, 0x49, 0x49, 0x49, 0x32,
+    0x03, 0x01, 0x7F, 0x01, 0x03,
+    0x3F, 0x40, 0x40, 0x40, 0x3F,
+    0x1F, 0x20, 0x40, 0x20, 0x1F,
+    0x3F, 0x40, 0x38, 0x40, 0x3F,
+    0x63, 0x14, 0x08, 0x14, 0x63,
+    0x03, 0x04, 0x78, 0x04, 0x03,
+    0x61, 0x59, 0x49, 0x4D, 0x43,
+    0x00, 0x7F, 0x41, 0x41, 0x41,
+    0x02, 0x04, 0x08, 0x10, 0x20,
+    0x00, 0x41, 0x41, 0x41, 0x7F,
+    0x04, 0x02, 0x01, 0x02, 0x04,
+    0x40, 0x40, 0x40, 0x40, 0x40,
+    0x00, 0x03, 0x07, 0x08, 0x00,
+    0x20, 0x54, 0x54, 0x78, 0x40,
+    0x7F, 0x28, 0x44, 0x44, 0x38,
+    0x38, 0x44, 0x44, 0x44, 0x28,
+    0x38, 0x44, 0x44, 0x28, 0x7F,
+    0x38, 0x54, 0x54, 0x54, 0x18,
+    0x00, 0x08, 0x7E, 0x09, 0x02,
+    0x18, 0xA4, 0xA4, 0x9C, 0x78,
+    0x7F, 0x08, 0x04, 0x04, 0x78,
+    0x00, 0x44, 0x7D, 0x40, 0x00,
+    0x20, 0x40, 0x40, 0x3D, 0x00,
+    0x7F, 0x10, 0x28, 0x44, 0x00,
+    0x00, 0x41, 0x7F, 0x40, 0x00,
+    0x7C, 0x04, 0x78, 0x04, 0x78,
+    0x7C, 0x08, 0x04, 0x04, 0x78,
+    0x38, 0x44, 0x44, 0x44, 0x38,
+    0xFC, 0x18, 0x24, 0x24, 0x18,
+    0x18, 0x24, 0x24, 0x18, 0xFC,
+    0x7C, 0x08, 0x04, 0x04, 0x08,
+    0x48, 0x54, 0x54, 0x54, 0x24,
+    0x04, 0x04, 0x3F, 0x44, 0x24,
+    0x3C, 0x40, 0x40, 0x20, 0x7C,
+    0x1C, 0x20, 0x40, 0x20, 0x1C,
+    0x3C, 0x40, 0x30, 0x40, 0x3C,
+    0x44, 0x28, 0x10, 0x28, 0x44,
+    0x4C, 0x90, 0x90, 0x90, 0x7C,
+    0x44, 0x64, 0x54, 0x4C, 0x44,
+    0x00, 0x08, 0x36, 0x41, 0x00,
+    0x00, 0x00, 0x77, 0x00, 0x00,
+    0x00, 0x41, 0x36, 0x08, 0x00,
+    0x02, 0x01, 0x02, 0x04, 0x02,
+    0x3C, 0x26, 0x23, 0x26, 0x3C,
+    0x1E, 0xA1, 0xA1, 0x61, 0x12,
+    0x3A, 0x40, 0x40, 0x20, 0x7A,
+    0x38, 0x54, 0x54, 0x55, 0x59,
+    0x21, 0x55, 0x55, 0x79, 0x41,
+    0x21, 0x54, 0x54, 0x78, 0x41,
+    0x21, 0x55, 0x54, 0x78, 0x40,
+    0x20, 0x54, 0x55, 0x79, 0x40,
+    0x0C, 0x1E, 0x52, 0x72, 0x12,
+    0x39, 0x55, 0x55, 0x55, 0x59,
+    0x39, 0x54, 0x54, 0x54, 0x59,
+    0x39, 0x55, 0x54, 0x54, 0x58,
+    0x00, 0x00, 0x45, 0x7C, 0x41,
+    0x00, 0x02, 0x45, 0x7D, 0x42,
+    0x00, 0x01, 0x45, 0x7C, 0x40,
+    0xF0, 0x29, 0x24, 0x29, 0xF0,
+    0xF0, 0x28, 0x25, 0x28, 0xF0,
+    0x7C, 0x54, 0x55, 0x45, 0x00,
+    0x20, 0x54, 0x54, 0x7C, 0x54,
+    0x7C, 0x0A, 0x09, 0x7F, 0x49,
+    0x32, 0x49, 0x49, 0x49, 0x32,
+    0x32, 0x48, 0x48, 0x48, 0x32,
+    0x32, 0x4A, 0x48, 0x48, 0x30,
+    0x3A, 0x41, 0x41, 0x21, 0x7A,
+    0x3A, 0x42, 0x40, 0x20, 0x78,
+    0x00, 0x9D, 0xA0, 0xA0, 0x7D,
+    0x39, 0x44, 0x44, 0x44, 0x39,
+    0x3D, 0x40, 0x40, 0x40, 0x3D,
+    0x3C, 0x24, 0xFF, 0x24, 0x24,
+    0x48, 0x7E, 0x49, 0x43, 0x66,
+    0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
+    0xFF, 0x09, 0x29, 0xF6, 0x20,
+    0xC0, 0x88, 0x7E, 0x09, 0x03,
+    0x20, 0x54, 0x54, 0x79, 0x41,
+    0x00, 0x00, 0x44, 0x7D, 0x41,
+    0x30, 0x48, 0x48, 0x4A, 0x32,
+    0x38, 0x40, 0x40, 0x22, 0x7A,
+    0x00, 0x7A, 0x0A, 0x0A, 0x72,
+    0x7D, 0x0D, 0x19, 0x31, 0x7D,
+    0x26, 0x29, 0x29, 0x2F, 0x28,
+    0x26, 0x29, 0x29, 0x29, 0x26,
+    0x30, 0x48, 0x4D, 0x40, 0x20,
+    0x38, 0x08, 0x08, 0x08, 0x08,
+    0x08, 0x08, 0x08, 0x08, 0x38,
+    0x2F, 0x10, 0xC8, 0xAC, 0xBA,
+    0x2F, 0x10, 0x28, 0x34, 0xFA,
+    0x00, 0x00, 0x7B, 0x00, 0x00,
+    0x08, 0x14, 0x2A, 0x14, 0x22,
+    0x22, 0x14, 0x2A, 0x14, 0x08,
+    0xAA, 0x00, 0x55, 0x00, 0xAA,
+    0xAA, 0x55, 0xAA, 0x55, 0xAA,
+    0x00, 0x00, 0x00, 0xFF, 0x00,
+    0x10, 0x10, 0x10, 0xFF, 0x00,
+    0x14, 0x14, 0x14, 0xFF, 0x00,
+    0x10, 0x10, 0xFF, 0x00, 0xFF,
+    0x10, 0x10, 0xF0, 0x10, 0xF0,
+    0x14, 0x14, 0x14, 0xFC, 0x00,
+    0x14, 0x14, 0xF7, 0x00, 0xFF,
+    0x00, 0x00, 0xFF, 0x00, 0xFF,
+    0x14, 0x14, 0xF4, 0x04, 0xFC,
+    0x14, 0x14, 0x17, 0x10, 0x1F,
+    0x10, 0x10, 0x1F, 0x10, 0x1F,
+    0x14, 0x14, 0x14, 0x1F, 0x00,
+    0x10, 0x10, 0x10, 0xF0, 0x00,
+    0x00, 0x00, 0x00, 0x1F, 0x10,
+    0x10, 0x10, 0x10, 0x1F, 0x10,
+    0x10, 0x10, 0x10, 0xF0, 0x10,
+    0x00, 0x00, 0x00, 0xFF, 0x10,
+    0x10, 0x10, 0x10, 0x10, 0x10,
+    0x10, 0x10, 0x10, 0xFF, 0x10,
+    0x00, 0x00, 0x00, 0xFF, 0x14,
+    0x00, 0x00, 0xFF, 0x00, 0xFF,
+    0x00, 0x00, 0x1F, 0x10, 0x17,
+    0x00, 0x00, 0xFC, 0x04, 0xF4,
+    0x14, 0x14, 0x17, 0x10, 0x17,
+    0x14, 0x14, 0xF4, 0x04, 0xF4,
+    0x00, 0x00, 0xFF, 0x00, 0xF7,
+    0x14, 0x14, 0x14, 0x14, 0x14,
+    0x14, 0x14, 0xF7, 0x00, 0xF7,
+    0x14, 0x14, 0x14, 0x17, 0x14,
+    0x10, 0x10, 0x1F, 0x10, 0x1F,
+    0x14, 0x14, 0x14, 0xF4, 0x14,
+    0x10, 0x10, 0xF0, 0x10, 0xF0,
+    0x00, 0x00, 0x1F, 0x10, 0x1F,
+    0x00, 0x00, 0x00, 0x1F, 0x14,
+    0x00, 0x00, 0x00, 0xFC, 0x14,
+    0x00, 0x00, 0xF0, 0x10, 0xF0,
+    0x10, 0x10, 0xFF, 0x10, 0xFF,
+    0x14, 0x14, 0x14, 0xFF, 0x14,
+    0x10, 0x10, 0x10, 0x1F, 0x00,
+    0x00, 0x00, 0x00, 0xF0, 0x10,
+    0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+    0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
+    0xFF, 0xFF, 0xFF, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFF, 0xFF,
+    0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
+    0x38, 0x44, 0x44, 0x38, 0x44,
+    0x7C, 0x2A, 0x2A, 0x3E, 0x14,
+    0x7E, 0x02, 0x02, 0x06, 0x06,
+    0x02, 0x7E, 0x02, 0x7E, 0x02,
+    0x63, 0x55, 0x49, 0x41, 0x63,
+    0x38, 0x44, 0x44, 0x3C, 0x04,
+    0x40, 0x7E, 0x20, 0x1E, 0x20,
+    0x06, 0x02, 0x7E, 0x02, 0x02,
+    0x99, 0xA5, 0xE7, 0xA5, 0x99,
+    0x1C, 0x2A, 0x49, 0x2A, 0x1C,
+    0x4C, 0x72, 0x01, 0x72, 0x4C,
+    0x30, 0x4A, 0x4D, 0x4D, 0x30,
+    0x30, 0x48, 0x78, 0x48, 0x30,
+    0xBC, 0x62, 0x5A, 0x46, 0x3D,
+    0x3E, 0x49, 0x49, 0x49, 0x00,
+    0x7E, 0x01, 0x01, 0x01, 0x7E,
+    0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
+    0x44, 0x44, 0x5F, 0x44, 0x44,
+    0x40, 0x51, 0x4A, 0x44, 0x40,
+    0x40, 0x44, 0x4A, 0x51, 0x40,
+    0x00, 0x00, 0xFF, 0x01, 0x03,
+    0xE0, 0x80, 0xFF, 0x00, 0x00,
+    0x08, 0x08, 0x6B, 0x6B, 0x08,
+    0x36, 0x12, 0x36, 0x24, 0x36,
+    0x06, 0x0F, 0x09, 0x0F, 0x06,
+    0x00, 0x00, 0x18, 0x18, 0x00,
+    0x00, 0x00, 0x10, 0x10, 0x00,
+    0x30, 0x40, 0xFF, 0x01, 0x01,
+    0x00, 0x1F, 0x01, 0x01, 0x1E,
+    0x00, 0x19, 0x1D, 0x17, 0x12,
+    0x00, 0x3C, 0x3C, 0x3C, 0x3C,
+    0x00, 0x00, 0x00, 0x00, 0x00
+};

drivers/qwiic/util/font8x16.h

@@ -0,0 +1,127 @@
+/******************************************************************************
+font8x16.h
+Definition for medium font
+
+This file was imported from the MicroView library, written by GeekAmmo
+(https://github.com/geekammo/MicroView-Arduino-Library), and released under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Modified by:
+Emil Varughese @ Edwin Robotics Pvt. Ltd.
+July 27, 2015
+https://github.com/emil01/SparkFun_Micro_OLED_Arduino_Library/
+******************************************************************************/
+#pragma once
+
+#include "progmem.h"
+
+static const unsigned char font8x16[] PROGMEM = {
+    // first row defines - FONTWIDTH, FONTHEIGHT, ASCII START CHAR, TOTAL CHARACTERS, FONT MAP WIDTH HIGH, FONT MAP WIDTH LOW (2,56 meaning 256)
+    8,16,32,96,2,56,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x0E, 0x00, 0x0E, 0x00, 0x00, 0x00, 0x00, 0xD0, 0xBE, 0x90, 0xD0, 0xBE, 0x90, 0x00,
+    0x00, 0x1C, 0x62, 0xFF, 0xC2, 0x80, 0x00, 0x00, 0x0C, 0x12, 0x92, 0x4C, 0xB0, 0x88, 0x06, 0x00,
+    0x80, 0x7C, 0x62, 0xB2, 0x1C, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x0E, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0xE0, 0x18, 0x04, 0x02, 0x02, 0x00, 0x00, 0x00, 0x02, 0x02, 0x04, 0x18, 0xE0, 0x00, 0x00,
+    0x00, 0x24, 0x18, 0x7E, 0x18, 0x24, 0x00, 0x00, 0x80, 0x80, 0x80, 0xF0, 0x80, 0x80, 0x80, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x60, 0x18, 0x06, 0x00, 0x00,
+    0xF8, 0x04, 0xC2, 0x32, 0x0C, 0xF8, 0x00, 0x00, 0x00, 0x04, 0x04, 0xFE, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x02, 0x82, 0x42, 0x22, 0x1C, 0x00, 0x00, 0x00, 0x02, 0x22, 0x22, 0x22, 0xDC, 0x00, 0x00,
+    0xC0, 0xA0, 0x98, 0x84, 0xFE, 0x80, 0x80, 0x00, 0x00, 0x1E, 0x12, 0x12, 0x22, 0xC2, 0x00, 0x00,
+    0xF8, 0x44, 0x22, 0x22, 0x22, 0xC0, 0x00, 0x00, 0x00, 0x02, 0x02, 0xC2, 0x32, 0x0A, 0x06, 0x00,
+    0x00, 0x8C, 0x52, 0x22, 0x52, 0x8C, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x26, 0xF8, 0x00, 0x00,
+    0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00,
+    0x80, 0x80, 0x40, 0x40, 0x20, 0x20, 0x10, 0x00, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x00,
+    0x10, 0x20, 0x20, 0x40, 0x40, 0x80, 0x80, 0x00, 0x00, 0x02, 0x82, 0x42, 0x22, 0x1C, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
+    0x00, 0x04, 0x04, 0x0F, 0x04, 0x03, 0x00, 0x00, 0x04, 0x02, 0x01, 0x03, 0x04, 0x04, 0x03, 0x00,
+    0x03, 0x04, 0x04, 0x04, 0x05, 0x03, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x03, 0x06, 0x08, 0x10, 0x10, 0x00, 0x00, 0x00, 0x10, 0x10, 0x08, 0x06, 0x03, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x16, 0x0E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0x03, 0x04, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x04, 0x04, 0x07, 0x04, 0x04, 0x00, 0x00,
+    0x00, 0x07, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x01, 0x02, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x03, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x02, 0x01, 0x00, 0x00,
+    0x00, 0x00, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x0E, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x01, 0x01, 0x02, 0x02, 0x04, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
+    0x04, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0xF8, 0x04, 0x72, 0x8A, 0xFA, 0x84, 0x78, 0x00, 0x00, 0xC0, 0x38, 0x06, 0x38, 0xC0, 0x00, 0x00,
+    0x00, 0xFE, 0x22, 0x22, 0x22, 0xDC, 0x00, 0x00, 0xF8, 0x04, 0x02, 0x02, 0x02, 0x02, 0x00, 0x00,
+    0xFE, 0x02, 0x02, 0x02, 0x04, 0xF8, 0x00, 0x00, 0x00, 0xFE, 0x22, 0x22, 0x22, 0x22, 0x00, 0x00,
+    0x00, 0xFE, 0x22, 0x22, 0x22, 0x22, 0x00, 0x00, 0xF8, 0x04, 0x02, 0x02, 0x22, 0xE2, 0x00, 0x00,
+    0xFE, 0x20, 0x20, 0x20, 0x20, 0xFE, 0x00, 0x00, 0x00, 0x02, 0x02, 0xFE, 0x02, 0x02, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x02, 0x02, 0xFE, 0x00, 0x00, 0xFE, 0x40, 0xB0, 0x08, 0x04, 0x02, 0x00, 0x00,
+    0x00, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x0C, 0x70, 0x80, 0x70, 0x0C, 0xFE, 0x00,
+    0xFE, 0x0C, 0x30, 0xC0, 0x00, 0xFE, 0x00, 0x00, 0xF8, 0x04, 0x02, 0x02, 0x04, 0xF8, 0x00, 0x00,
+    0xFE, 0x42, 0x42, 0x42, 0x22, 0x1C, 0x00, 0x00, 0xF8, 0x04, 0x02, 0x02, 0x04, 0xF8, 0x00, 0x00,
+    0x00, 0xFE, 0x42, 0x42, 0xA2, 0x1C, 0x00, 0x00, 0x00, 0x1C, 0x22, 0x42, 0x42, 0x80, 0x00, 0x00,
+    0x02, 0x02, 0x02, 0xFE, 0x02, 0x02, 0x02, 0x00, 0xFE, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x00,
+    0x06, 0x38, 0xC0, 0x00, 0xC0, 0x38, 0x06, 0x00, 0x3E, 0xC0, 0xF0, 0x0E, 0xF0, 0xC0, 0x3E, 0x00,
+    0x00, 0x06, 0x98, 0x60, 0x98, 0x06, 0x00, 0x00, 0x00, 0x06, 0x18, 0xE0, 0x18, 0x06, 0x00, 0x00,
+    0x02, 0x02, 0xC2, 0x32, 0x0A, 0x06, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x02, 0x02, 0x02, 0x02, 0x00,
+    0x00, 0x06, 0x18, 0x60, 0x80, 0x00, 0x00, 0x00, 0x02, 0x02, 0x02, 0x02, 0xFE, 0x00, 0x00, 0x00,
+    0x40, 0x30, 0x0C, 0x0C, 0x30, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0x02, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x06, 0x01, 0x01, 0x01, 0x01, 0x01, 0x06, 0x00,
+    0x00, 0x07, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x01, 0x02, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,
+    0x07, 0x04, 0x04, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x07, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,
+    0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x04, 0x04, 0x04, 0x07, 0x00, 0x00,
+    0x07, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x04, 0x04, 0x07, 0x04, 0x04, 0x00, 0x00,
+    0x00, 0x04, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x07, 0x00, 0x00, 0x01, 0x02, 0x04, 0x00, 0x00,
+    0x00, 0x07, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x07, 0x00, 0x00, 0x01, 0x00, 0x00, 0x07, 0x00,
+    0x07, 0x00, 0x00, 0x00, 0x03, 0x07, 0x00, 0x00, 0x01, 0x02, 0x04, 0x04, 0x02, 0x01, 0x00, 0x00,
+    0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x04, 0x0C, 0x12, 0x11, 0x10, 0x00,
+    0x00, 0x07, 0x00, 0x00, 0x01, 0x06, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x00, 0x00, 0x01, 0x06, 0x01, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
+    0x00, 0x06, 0x01, 0x00, 0x01, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00,
+    0x06, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x04, 0x00, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00,
+    0x00, 0x00, 0x02, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00,
+    0x00, 0xFE, 0x20, 0x10, 0x10, 0xE0, 0x00, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00,
+    0x00, 0xE0, 0x10, 0x10, 0x10, 0xFE, 0x00, 0x00, 0x00, 0xE0, 0x90, 0x90, 0x90, 0xE0, 0x00, 0x00,
+    0x00, 0x20, 0xFC, 0x22, 0x22, 0x22, 0x02, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00,
+    0x00, 0xFE, 0x20, 0x10, 0x10, 0xE0, 0x00, 0x00, 0x10, 0x10, 0xF2, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x10, 0x10, 0x10, 0xF2, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x80, 0x40, 0x20, 0x10, 0x00, 0x00,
+    0x00, 0x02, 0x02, 0xFE, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x20, 0x10, 0xF0, 0x20, 0x10, 0xF0, 0x00,
+    0x00, 0xF0, 0x20, 0x10, 0x10, 0xE0, 0x00, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x10, 0xE0, 0x00, 0x00,
+    0x00, 0xF0, 0x20, 0x10, 0x10, 0xE0, 0x00, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00,
+    0x00, 0xF0, 0x20, 0x10, 0x10, 0x70, 0x00, 0x00, 0x00, 0x60, 0x90, 0x90, 0x90, 0x20, 0x00, 0x00,
+    0x00, 0x20, 0x20, 0xFC, 0x20, 0x20, 0x20, 0x00, 0x00, 0xF0, 0x00, 0x00, 0x00, 0xF0, 0x00, 0x00,
+    0x00, 0x70, 0x80, 0x00, 0x80, 0x70, 0x00, 0x00, 0xF0, 0x00, 0xC0, 0x30, 0xC0, 0x00, 0xF0, 0x00,
+    0x00, 0x30, 0xC0, 0xC0, 0x30, 0x00, 0x00, 0x00, 0x00, 0x30, 0xC0, 0x00, 0x80, 0x70, 0x00, 0x00,
+    0x00, 0x10, 0x10, 0x90, 0x50, 0x30, 0x00, 0x00, 0x00, 0x80, 0x80, 0x7E, 0x02, 0x02, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x02, 0x7E, 0x80, 0x80, 0x00, 0x00,
+    0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x02, 0x07, 0x00, 0x00,
+    0x00, 0x07, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,
+    0x00, 0x03, 0x04, 0x04, 0x02, 0x07, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00,
+    0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x24, 0x24, 0x22, 0x1F, 0x00, 0x00,
+    0x00, 0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x07, 0x04, 0x04, 0x00, 0x00, 0x00,
+    0x20, 0x20, 0x20, 0x20, 0x1F, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x01, 0x02, 0x04, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x07, 0x04, 0x04, 0x00, 0x00, 0x07, 0x00, 0x00, 0x07, 0x00, 0x00, 0x07, 0x00,
+    0x00, 0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x00, 0x3F, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x02, 0x3F, 0x00, 0x00,
+    0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x04, 0x04, 0x04, 0x03, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x03, 0x04, 0x04, 0x04, 0x00, 0x00, 0x03, 0x04, 0x04, 0x02, 0x07, 0x00, 0x00,
+    0x00, 0x00, 0x03, 0x04, 0x03, 0x00, 0x00, 0x00, 0x01, 0x06, 0x01, 0x00, 0x01, 0x06, 0x01, 0x00,
+    0x00, 0x06, 0x01, 0x01, 0x06, 0x00, 0x00, 0x00, 0x20, 0x20, 0x31, 0x0E, 0x03, 0x00, 0x00, 0x00,
+    0x00, 0x06, 0x05, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x10, 0x10, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x1F, 0x00, 0x00, 0x00, 0x00,
+    0x01, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};

keyboards/planck/rev6/halconf.h

@@ -76,7 +76,7 @@
  * @brief   Enables the I2C subsystem.
  */
 #if !defined(HAL_USE_I2C) || defined(__DOXYGEN__)
-#define HAL_USE_I2C                 FALSE
+#define HAL_USE_I2C                 TRUE
 #endif
 
 /**

keyboards/planck/rev6/matrix.c

@@ -90,6 +90,9 @@ void dip_update(uint8_t index, bool active) { }
 __attribute__ ((weak))
 void encoder_update(bool clockwise) { }
 
+__attribute__ ((weak))
+void encoder_update_kb(uint8_t index, bool clockwise) { }
+
 bool last_dip_switch[4] = {0};
 
 #ifndef ENCODER_RESOLUTION
@@ -114,9 +117,11 @@ uint8_t matrix_scan(void) {
     encoder_value += encoder_LUT[encoder_state & 0xF];
     if (encoder_value >= ENCODER_RESOLUTION) {
         encoder_update(0);
+        encoder_update_kb(0, 0);
     }
     if (encoder_value <= -ENCODER_RESOLUTION) { // direction is arbitrary here, but this clockwise
         encoder_update(1);
+        encoder_update_kb(0, 1);
     }
     encoder_value %= ENCODER_RESOLUTION;
 

keyboards/planck/rev6/mcuconf.h

@@ -154,7 +154,7 @@
 /*
  * I2C driver system settings.
  */
-#define STM32_I2C_USE_I2C1                  FALSE
+#define STM32_I2C_USE_I2C1                  TRUE
 #define STM32_I2C_USE_I2C2                  FALSE
 #define STM32_I2C_BUSY_TIMEOUT              50
 #define STM32_I2C_I2C1_IRQ_PRIORITY         10

keyboards/planck/rev6/rev6.c

@@ -14,11 +14,116 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include "rev6.h"
+#include "qwiic.h"
+#include "action_layer.h"
+#include "matrix.h"
+
+#ifdef QWIIC_MICRO_OLED_ENABLE
+
+static uint8_t layer;
+static bool queue_for_send = false;
+static uint8_t encoder_value = 32;
+
+void draw_ui(void) {
+  clear_buffer();
+  draw_string(0, 2, "LAYER", PIXEL_ON, NORM, 0);
+  draw_rect_filled_soft(32, 0, 11, 11, PIXEL_ON, NORM);
+  draw_char(35, 2, layer + 0x30, PIXEL_ON, XOR, 0);
+
+#define MATRIX_DISPLAY_X 46
+#define MATRIX_DISPLAY_Y 1
+
+  for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
+    for (uint8_t y = 0; y < MATRIX_COLS; y++) {
+      if (x < 4)
+        draw_pixel(MATRIX_DISPLAY_X + 2 + y, MATRIX_DISPLAY_Y + 2 + x, (matrix_get_row(x) & (1 << y)) > 0, NORM);
+      else
+        draw_pixel(MATRIX_DISPLAY_X + 8 + y, MATRIX_DISPLAY_Y - 2 + x, (matrix_get_row(x) & (1 << y)) > 0, NORM);
+    }
+  }
+  draw_rect_soft(MATRIX_DISPLAY_X, MATRIX_DISPLAY_Y, 16, 8, PIXEL_ON, NORM);
+
+
+  draw_rect_soft(0, 13, 64, 6, PIXEL_ON, NORM);
+  draw_line_vert(encoder_value, 13, 6, PIXEL_ON, NORM);
+
+
+#define MOD_DISPLAY_X 0
+#define MOD_DISPLAY_Y 22
+
+  uint8_t mods = get_mods();
+  if (mods & MOD_LSFT) {
+    draw_rect_filled_soft(MOD_DISPLAY_X + 0, MOD_DISPLAY_Y, 5 + (1 * 6), 11, PIXEL_ON, NORM);
+    draw_string(MOD_DISPLAY_X + 3, MOD_DISPLAY_Y + 2, "S", PIXEL_OFF, NORM, 0);
+  } else {
+    draw_string(MOD_DISPLAY_X + 3, MOD_DISPLAY_Y + 2, "S", PIXEL_ON, NORM, 0);
+  }
+  if (mods & MOD_LCTL) {
+    draw_rect_filled_soft(MOD_DISPLAY_X + 10, MOD_DISPLAY_Y, 5 + (1 * 6), 11, PIXEL_ON, NORM);
+    draw_string(MOD_DISPLAY_X + 13, MOD_DISPLAY_Y + 2, "C", PIXEL_OFF, NORM, 0);
+  } else {
+    draw_string(MOD_DISPLAY_X + 13, MOD_DISPLAY_Y + 2, "C", PIXEL_ON, NORM, 0);
+  }
+  if (mods & MOD_LALT) {
+    draw_rect_filled_soft(MOD_DISPLAY_X + 20, MOD_DISPLAY_Y, 5 + (1 * 6), 11, PIXEL_ON, NORM);
+    draw_string(MOD_DISPLAY_X + 23, MOD_DISPLAY_Y + 2, "A", PIXEL_OFF, NORM, 0);
+  } else {
+    draw_string(MOD_DISPLAY_X + 23, MOD_DISPLAY_Y + 2, "A", PIXEL_ON, NORM, 0);
+  }
+  if (mods & MOD_LGUI) {
+    draw_rect_filled_soft(MOD_DISPLAY_X + 30, MOD_DISPLAY_Y, 5 + (1 * 6), 11, PIXEL_ON, NORM);
+    draw_string(MOD_DISPLAY_X + 33, MOD_DISPLAY_Y + 2, "G", PIXEL_OFF, NORM, 0);
+  } else {
+    draw_string(MOD_DISPLAY_X + 33, MOD_DISPLAY_Y + 2, "G", PIXEL_ON, NORM, 0);
+  }
+
+  send_buffer();
+}
+
+uint32_t layer_state_set_kb(uint32_t state) {
+  state = layer_state_set_user(state);
+  layer = biton32(state);
+  queue_for_send = true;
+  return state;
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+  queue_for_send = true;
+  return process_record_user(keycode, record);
+}
+
+void encoder_update_kb(uint8_t index, bool clockwise) {
+  encoder_value = (encoder_value + (clockwise ? 1 : -1)) % 64;
+  queue_for_send = true;
+}
+
+#endif
 
 void matrix_init_kb(void) {
+#ifdef QWIIC_MICRO_OLED_ENABLE
+  queue_for_send = true;
+#endif
 	matrix_init_user();
 }
 
 void matrix_scan_kb(void) {
+#ifdef QWIIC_MICRO_OLED_ENABLE
+  if (queue_for_send) {
+   draw_ui();
+   queue_for_send = false;
+  }
+#endif
 	matrix_scan_user();
 }
+
+#ifdef QWIIC_JOYSTIIC_ENABLE
+void joystiic_trigger_kb(uint8_t trigger, bool active) {
+  switch (trigger) {
+    case JOYSTIIC_LEFT: active ? register_code(KC_L) : unregister_code(KC_L); break;
+    case JOYSTIIC_RIGHT: active ? register_code(KC_R) : unregister_code(KC_R); break;
+    case JOYSTIIC_UP: active ? register_code(KC_U) : unregister_code(KC_U); break;
+    case JOYSTIIC_DOWN: active ? register_code(KC_D) : unregister_code(KC_D); break;
+    case JOYSTIIC_PRESS: active ? register_code(KC_P) : unregister_code(KC_P); break;
+  }
+}
+#endif

keyboards/planck/rev6/rules.mk

@@ -53,4 +53,5 @@ NKRO_ENABLE = yes	    # USB Nkey Rollover
 CUSTOM_MATRIX = yes # Custom matrix file
 AUDIO_ENABLE = yes
 RGBLIGHT_ENABLE = no
+QWIIC_ENABLE += MICRO_OLED
 # SERIAL_LINK_ENABLE = yes

tmk_core/common/action_layer.h

@@ -82,13 +82,11 @@ void layer_xor(uint32_t state);
 #define layer_or(state)
 #define layer_and(state)
 #define layer_xor(state)
-
-__attribute__((weak))
-uint32_t layer_state_set_user(uint32_t state);
-__attribute__((weak))
-uint32_t layer_state_set_kb(uint32_t state);
 #endif
 
+uint32_t layer_state_set_user(uint32_t state);
+uint32_t layer_state_set_kb(uint32_t state);
+
 /* pressed actions cache */
 #if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
 /* The number of bits needed to represent the layer number: log2(32). */

tmk_core/common/keyboard.c

@@ -72,6 +72,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef HD44780_ENABLE
 #   include "hd44780.h"
 #endif
+#ifdef QWIIC_ENABLE
+#   include "qwiic.h"
+#endif
 
 #ifdef MATRIX_HAS_GHOST
 extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
@@ -157,6 +160,9 @@ void keyboard_init(void) {
   MCUCR |= _BV(JTD);
 #endif
     matrix_init();
+#ifdef QWIIC_ENABLE
+    qwiic_init();
+#endif
 #ifdef PS2_MOUSE_ENABLE
     ps2_mouse_init();
 #endif
@@ -266,6 +272,10 @@ void keyboard_task(void)
 
 MATRIX_LOOP_END:
 
+#ifdef QWIIC_ENABLE
+    qwiic_task();
+#endif
+
 #ifdef MOUSEKEY_ENABLE
     // mousekey repeat & acceleration
     mousekey_task();