M0lly: refactor OLED support and qmk-dfu bootloader (#8475)
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TerryMathews
GitHub
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73f903906e
commit
19d7cbc858
6 changed files with 30 additions and 321 deletions
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@ -67,6 +67,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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/* Locking resynchronize hack */
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#define LOCKING_RESYNC_ENABLE
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#define QMK_ESC_OUTPUT A0 // usually COL
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#define QMK_ESC_INPUT F4 // usually ROW
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#define QMK_LED D2 // NumLock on M0lly
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//#define QMK_SPEAKER C6
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/*
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* Force NKRO
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*
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@ -1,166 +0,0 @@
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#include <util/twi.h>
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#include <avr/io.h>
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#include <stdlib.h>
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#include <avr/interrupt.h>
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#include <util/twi.h>
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#include <stdbool.h>
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#include "i2c.h"
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#ifdef USE_I2C
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// Limits the amount of we wait for any one i2c transaction.
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// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
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// 9 bits, a single transaction will take around 90μs to complete.
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//
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// (F_CPU/SCL_CLOCK) => # of μC cycles to transfer a bit
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// poll loop takes at least 8 clock cycles to execute
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#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
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#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
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volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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static volatile uint8_t slave_buffer_pos;
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static volatile bool slave_has_register_set = false;
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// Wait for an i2c operation to finish
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inline static
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void i2c_delay(void) {
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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// easier way, but will wait slightly longer
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// _delay_us(100);
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}
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// Setup twi to run at 100kHz
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void i2c_master_init(void) {
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// no prescaler
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TWSR = 0;
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// Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
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// Check datasheets for more info.
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TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
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}
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// Start a transaction with the given i2c slave address. The direction of the
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// transfer is set with I2C_READ and I2C_WRITE.
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// returns: 0 => success
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// 1 => error
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uint8_t i2c_master_start(uint8_t address) {
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TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
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i2c_delay();
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// check that we started successfully
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if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
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return 1;
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// send device address
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TWDR = address;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
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return 1; // slave did not acknowledge
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else
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return 0; // success
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}
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// Finish the i2c transaction.
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void i2c_master_stop(void) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
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uint16_t lim = 0;
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while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
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lim++;
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}
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// Write one byte to the i2c slave.
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// returns 0 => slave ACK
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// 1 => slave NACK
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uint8_t i2c_master_write(uint8_t data) {
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TWDR = data;
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TWCR = (1<<TWINT) | (1<<TWEN);
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i2c_delay();
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// check if the slave acknowledged us
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return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
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}
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// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
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// if ack=0 the acknowledge bit is not set.
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// returns: byte read from i2c device
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uint8_t i2c_master_read(int ack) {
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TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
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i2c_delay();
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return TWDR;
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}
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void i2c_reset_state(void) {
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TWCR = 0;
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}
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void i2c_slave_init(uint8_t address) {
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TWAR = address << 0; // slave i2c address
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// TWEN - twi enable
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// TWEA - enable address acknowledgement
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// TWINT - twi interrupt flag
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// TWIE - enable the twi interrupt
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TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
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}
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ISR(TWI_vect);
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ISR(TWI_vect) {
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uint8_t ack = 1;
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switch(TW_STATUS) {
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case TW_SR_SLA_ACK:
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// this device has been addressed as a slave receiver
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slave_has_register_set = false;
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break;
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case TW_SR_DATA_ACK:
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// this device has received data as a slave receiver
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// The first byte that we receive in this transaction sets the location
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// of the read/write location of the slaves memory that it exposes over
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// i2c. After that, bytes will be written at slave_buffer_pos, incrementing
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// slave_buffer_pos after each write.
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if(!slave_has_register_set) {
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slave_buffer_pos = TWDR;
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// don't acknowledge the master if this memory loctaion is out of bounds
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if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
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ack = 0;
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slave_buffer_pos = 0;
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}
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slave_has_register_set = true;
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} else {
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i2c_slave_buffer[slave_buffer_pos] = TWDR;
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BUFFER_POS_INC();
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}
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break;
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case TW_ST_SLA_ACK:
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case TW_ST_DATA_ACK:
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// master has addressed this device as a slave transmitter and is
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// requesting data.
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TWDR = i2c_slave_buffer[slave_buffer_pos];
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BUFFER_POS_INC();
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break;
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case TW_BUS_ERROR: // something went wrong, reset twi state
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TWCR = 0;
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default:
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break;
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}
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// Reset everything, so we are ready for the next TWI interrupt
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TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
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}
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#endif
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@ -1,49 +0,0 @@
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#ifndef I2C_H
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#define I2C_H
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#include <stdint.h>
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#ifndef F_CPU
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#define F_CPU 16000000UL
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#endif
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#define I2C_READ 1
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#define I2C_WRITE 0
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#define I2C_ACK 1
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#define I2C_NACK 0
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#define SLAVE_BUFFER_SIZE 0x10
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// i2c SCL clock frequency
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#define SCL_CLOCK 800000L
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extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
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void i2c_master_init(void);
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uint8_t i2c_master_start(uint8_t address);
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void i2c_master_stop(void);
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uint8_t i2c_master_write(uint8_t data);
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uint8_t i2c_master_read(int);
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void i2c_reset_state(void);
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void i2c_slave_init(uint8_t address);
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static inline unsigned char i2c_start_read(unsigned char addr) {
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return i2c_master_start((addr << 1) | I2C_READ);
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}
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static inline unsigned char i2c_start_write(unsigned char addr) {
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return i2c_master_start((addr << 1) | I2C_WRITE);
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}
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// from SSD1306 scrips
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extern unsigned char i2c_rep_start(unsigned char addr);
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extern void i2c_start_wait(unsigned char addr);
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extern unsigned char i2c_readAck(void);
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extern unsigned char i2c_readNak(void);
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extern unsigned char i2c_read(unsigned char ack);
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#define i2c_read(ack) (ack) ? i2c_readAck() : i2c_readNak();
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#endif
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@ -1,24 +0,0 @@
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/* Copyright 2017 Mathias Andersson <wraul@dbox.se>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#define USE_I2C
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#define SSD1306OLED
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//#define OLED_ROTATE180
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#define SSD1306_ADDRESS 0x3C
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// place overrides here
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@ -13,11 +13,8 @@
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include QMK_KEYBOARD_H
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#include "LUFA/Drivers/Peripheral/TWI.h"
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#include "i2c.h"
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#include "ssd1306.h"
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#include QMK_KEYBOARD_H
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//Layers
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@ -26,13 +23,6 @@ enum {
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FUNCTION,
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};
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bool screenWorks = 0;
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//13 characters max without re-writing the "Layer: " format in iota_gfx_task_user()
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static char layer_lookup[][14] = {"Base","Function"};
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const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
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/* Keymap BASE: (Base Layer) Default Layer
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*
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@ -78,72 +68,27 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
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),
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};
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bool process_record_user(uint16_t keycode, keyrecord_t *record) {
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return true;
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}
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#ifdef OLED_DRIVER_ENABLE
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void oled_task_user(void) {
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oled_write_P(PSTR("TKC1800\n"),false);
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// Host Keyboard Layer Status
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oled_write_P(PSTR("Layer: "), false);
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void led_set_user(uint8_t usb_led) {
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}
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void matrix_init_user(void) {
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#ifdef USE_I2C
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i2c_master_init();
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#ifdef SSD1306OLED
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// calls code for the SSD1306 OLED
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_delay_ms(400);
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TWI_Init(TWI_BIT_PRESCALE_1, TWI_BITLENGTH_FROM_FREQ(1, 800000));
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if ( iota_gfx_init() ) { // turns on the display
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screenWorks = 1;
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switch (get_highest_layer(layer_state)) {
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case BASE:
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oled_write_P(PSTR("Base\n"), false);
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break;
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case FUNCTION:
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oled_write_P(PSTR("Function\n"), false);
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break;
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default:
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// Or use the write_ln shortcut over adding '\n' to the end of your string
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oled_write_ln_P(PSTR("Undefined"), false);
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}
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#endif
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#endif
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#ifdef AUDIO_ENABLE
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startup_user();
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#endif
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}
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void matrix_scan_user(void) {
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#ifdef SSD1306OLED
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if ( screenWorks ) {
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iota_gfx_task(); // this is what updates the display continuously
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};
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#endif
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}
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void matrix_update(struct CharacterMatrix *dest,
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const struct CharacterMatrix *source) {
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if (memcmp(dest->display, source->display, sizeof(dest->display))) {
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memcpy(dest->display, source->display, sizeof(dest->display));
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dest->dirty = true;
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}
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}
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void iota_gfx_task_user(void) {
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#if DEBUG_TO_SCREEN
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if (debug_enable) {
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return;
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}
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#endif
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struct CharacterMatrix matrix;
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matrix_clear(&matrix);
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matrix_write_P(&matrix, PSTR("TKC M0LLY"));
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uint8_t layer = biton32(layer_state);
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char buf[40];
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snprintf(buf,sizeof(buf), "Undef-%d", layer);
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matrix_write_P(&matrix, PSTR("\nLayer: "));
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matrix_write(&matrix, layer_lookup[layer]);
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// Host Keyboard LED Status
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char led[40];
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snprintf(led, sizeof(led), "\n\n%s %s %s",
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(host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : " ",
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(host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : " ",
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(host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : " ");
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matrix_write(&matrix, led);
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matrix_update(&display, &matrix);
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led_t led_state = host_keyboard_led_state();
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oled_write_P(led_state.num_lock ? PSTR("NUM ") : PSTR(" "), false);
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oled_write_P(led_state.caps_lock ? PSTR("CAP ") : PSTR(" "), false);
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oled_write_P(led_state.scroll_lock ? PSTR("SCR ") : PSTR(" "), false);
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}
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#endif
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@ -9,12 +9,12 @@ MCU = at90usb1286
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# QMK DFU qmk-dfu
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# ATmega32A bootloadHID
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# ATmega328P USBasp
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BOOTLOADER = atmel-dfu
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BOOTLOADER = qmk-dfu
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# Build Options
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# change yes to no to disable
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#
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BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration
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BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
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MOUSEKEY_ENABLE = yes # Mouse keys
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EXTRAKEY_ENABLE = yes # Audio control and System control
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CONSOLE_ENABLE = yes # Console for debug
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@ -29,6 +29,4 @@ MIDI_ENABLE = no # MIDI controls
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UNICODE_ENABLE = no # Unicode
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BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
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AUDIO_ENABLE = no # Audio output on port C6
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SRC = i2c.c \
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ssd1306.c
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OLED_DRIVER_ENABLE = yes
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