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add broken custom matrix code

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This commit is contained in:
Charlotte 🦝 Delenk 2022-07-25 08:49:34 +01:00
parent ae3e5e0557
commit 3c25be8aff
6 changed files with 210 additions and 1 deletions
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2
keyboards/rkb1/keymaps/default/keymap.c
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@ -295,7 +295,9 @@ bool process_record_user(uint16_t keycode, keyrecord_t *record) {
}
void matrix_init_user(void) {
#ifdef STENO_ENABLE
steno_set_mode(STENO_MODE_GEMINI);
#endif
#ifdef OLED_ENABLE
oled_turn_on_for(60000);
#endif

104
keyboards/rkb1/matrix.c Normal file
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@ -0,0 +1,104 @@
#include QMK_KEYBOARD_H
#undef PARAM_ASSERTIONS_ENABLED
#define PARAM_ASSERTIONS_ENABLED(x) 0
#include "hardware/pio.h"
#include "hardware/dma.h"
#include "hardware/irq.h"
#include "matrix.pio.h"
#include "split_util.h"
// Faster, PIO based matrix scanning routines
// It sets up two DMAs that feed a PIO FSM to scan the matrix.
static uint32_t matrix_scan_input[] __attribute__((aligned(8))) = {0x01020408, 0x10200000};
static int tx_chan, rx_chan;
static volatile uint32_t matrix_scan_result;
static void dma_handler(void) {
// Restart the DMAs when they have finished
if (!dma_channel_is_busy(tx_chan)) {
dma_channel_acknowledge_irq0(tx_chan);
dma_channel_set_trans_count(tx_chan, ~0, true);
if (debug_matrix) {
uprintf("TX DMA restarted\n");
}
}
if (!dma_channel_is_busy(rx_chan)) {
dma_channel_acknowledge_irq0(rx_chan);
dma_channel_set_trans_count(rx_chan, ~0, true);
if (debug_matrix) {
uprintf("RX DMA restarted\n");
}
}
}
void matrix_init_custom(void) {
PIO pio = pio0;
uint offset = pio_add_program(pio, &matrix_program);
uint sm = pio_claim_unused_sm(pio, true);
matrix_program_init(pio, sm, offset, 0);
uint tx_dreq = pio_get_dreq(pio, sm, true);
uint rx_dreq = pio_get_dreq(pio, sm, false);
tx_chan = dma_claim_unused_channel(true);
dma_channel_config tx_cfg = dma_channel_get_default_config(tx_chan);
channel_config_set_read_increment(&tx_cfg, true);
channel_config_set_write_increment(&tx_cfg, false);
channel_config_set_dreq(&tx_cfg, tx_dreq);
channel_config_set_transfer_data_size(&tx_cfg, DMA_SIZE_32);
channel_config_set_ring(&tx_cfg, false, 3); // wrap read around
dma_channel_set_config(tx_chan, &tx_cfg, false);
dma_channel_set_irq0_enabled(tx_chan, true);
dma_channel_set_read_addr(tx_chan, matrix_scan_input, false);
dma_channel_set_write_addr(tx_chan, &pio0_hw->txf[sm], false);
// Set up the rx channel
rx_chan = dma_claim_unused_channel(true);
dma_channel_config rx_cfg = dma_channel_get_default_config(rx_chan);
channel_config_set_read_increment(&rx_cfg, false);
channel_config_set_write_increment(&rx_cfg, false);
channel_config_set_dreq(&rx_cfg, rx_dreq);
channel_config_set_transfer_data_size(&rx_cfg, DMA_SIZE_32);
dma_channel_set_config(rx_chan, &rx_cfg, false);
dma_channel_set_irq0_enabled(rx_chan, true);
dma_channel_set_read_addr(rx_chan, &pio0_hw->rxf[sm], false);
dma_channel_set_write_addr(rx_chan, &matrix_scan_result, false);
// Set up IRQs for restarting the DMAs
irq_set_exclusive_handler(DMA_IRQ_0, dma_handler);
irq_set_enabled(DMA_IRQ_0, true);
// Call the IRQ handler manually to reset the trans counts and start the DMA channels
dma_handler();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool matrix_has_changed = false;
// Copy over the matrix scan result to avoid concurrent access from DMA
uint32_t local_state = matrix_scan_result;
uint32_t local_state_copy = local_state;
int start_row = isLeftHand ? 0 : 5;
for (int row = 0; row < 5; row++) {
// get a new matrix row by shifting it out of the state
matrix_row_t new_row = local_state & 0x1F;
local_state >>= 5;
// check if the row has changed
matrix_has_changed |= (current_matrix[start_row + row] != new_row);
// update the current matrix
current_matrix[start_row + row] = new_row;
}
if (debug_matrix && matrix_has_changed) {
uprintf("Matrix scan: %08lx\n", local_state_copy);
}
return matrix_has_changed;
}

37
keyboards/rkb1/matrix.pio Normal file
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@ -0,0 +1,37 @@
.program matrix
; INPUT: repeated bit pattern
; 0000_0100_0000_1000_0001_0000_0010_0000_0100_0000_1000_0001_0000_0000_0000_0000
; So, like: 0x0408_1020, 0x4081_0000
set x, 7
loop:
pull ifempty [31]
; Assert the column pins
out pins, 8 [31]
; Read the row pins
in pins, 5 [31]
jmp x--, loop [31]
; Output the two missing bits and push
in null, 2 [31]
push [31]
% c-sdk {
static inline void matrix_program_init(PIO pio, uint sm, uint offset, uint pin) {
pio_sm_config c = matrix_program_get_default_config(offset);
// The row inputs start at the pin base
sm_config_set_in_pins(&c, pin);
// The 6 output bits come after the 5 input bits
sm_config_set_out_pins(&c, pin + 5, 6);
// Set up the pins for PIO
for(int i = 0; i < 11; i++)
pio_gpio_init(pio, pin + i);
// Set the pin directions
pio_sm_set_consecutive_pindirs(pio, sm, pin, 5, false);
pio_sm_set_consecutive_pindirs(pio, sm, pin + 5, 6, true);
// Load our configuration, and jump to the start of the program
pio_sm_init(pio, sm, offset, &c);
// Set the state machine running
pio_sm_set_enabled(pio, sm, true);
}
%}

61
keyboards/rkb1/matrix.pio.h Normal file
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@ -0,0 +1,61 @@
// -------------------------------------------------- //
// This file is autogenerated by pioasm; do not edit! //
// -------------------------------------------------- //
#pragma once
#if !PICO_NO_HARDWARE
# include "hardware/pio.h"
#endif
// ------ //
// matrix //
// ------ //
#define matrix_wrap_target 0
#define matrix_wrap 6
static const uint16_t matrix_program_instructions[] = {
// .wrap_target
0xe027, // 0: set x, 7
0x9fe0, // 1: pull ifempty block [31]
0x7f08, // 2: out pins, 8 [31]
0x5f05, // 3: in pins, 5 [31]
0x1f41, // 4: jmp x--, 1 [31]
0x5f62, // 5: in null, 2 [31]
0x9f20, // 6: push block [31]
// .wrap
};
#if !PICO_NO_HARDWARE
static const struct pio_program matrix_program = {
.instructions = matrix_program_instructions,
.length = 7,
.origin = -1,
};
static inline pio_sm_config matrix_program_get_default_config(uint offset) {
pio_sm_config c = pio_get_default_sm_config();
sm_config_set_wrap(&c, offset + matrix_wrap_target, offset + matrix_wrap);
return c;
}
static inline void matrix_program_init(PIO pio, uint sm, uint offset, uint pin) {
pio_sm_config c = matrix_program_get_default_config(offset);
// The row inputs start at the pin base
sm_config_set_in_pins(&c, pin);
// The 6 output bits come after the 5 input bits
sm_config_set_out_pins(&c, pin + 5, 6);
// Set up the pins for PIO
for (int i = 0; i < 11; i++)
pio_gpio_init(pio, pin + i);
// Set the pin directions
pio_sm_set_consecutive_pindirs(pio, sm, pin, 5, false);
pio_sm_set_consecutive_pindirs(pio, sm, pin + 5, 6, true);
// Load our configuration, and jump to the start of the program
pio_sm_init(pio, sm, offset, &c);
// Set the state machine running
pio_sm_set_enabled(pio, sm, true);
}
#endif

3
keyboards/rkb1/rules.mk
View file

@ -10,3 +10,6 @@ COMMON_VPATH += $(QUANTUM_PATH)/split_common
EXTRAINCDIRS += $(BOARD_PATH)
CFLAGS += -Wl,--defsym=__unhandled_user_irq=_unhandled_exception
#SRC += matrix.c
#CUSTOM_MATRIX = lite

4
platforms/chibios/vendors/RP/RP2040.mk vendored
View file

@ -35,6 +35,7 @@ PICOSDKSRC = $(PICOSDKROOT)/src/rp2_common/hardware_clocks/clocks.c \
$(PICOSDKROOT)/src/rp2_common/hardware_irq/irq.c \
$(PICOSDKROOT)/src/rp2_common/hardware_irq/irq_handler_chain.S \
$(PICOSDKROOT)/src/rp2_common/hardware_timer/timer.c \
$(PICOSDKROOT)/src/rp2_common/hardware_dma/dma.c \
$(PICOSDKROOT)/src/rp2_common/pico_bootrom/bootrom.c \
$(PICOSDKROOT)/src/common/pico_time/time.c \
$(PICOSDKROOT)/src/common/pico_time/timeout_helper.c \
@ -64,13 +65,14 @@ PICOSDKINC = $(CHIBIOS)//os/various/pico_bindings/dumb/include \
$(PICOSDKROOT)/src/rp2_common/hardware_xosc/include \
$(PICOSDKROOT)/src/rp2_common/hardware_i2c/include \
$(PICOSDKROOT)/src/rp2_common/hardware_timer/include \
$(PICOSDKROOT)/src/rp2_common/hardware_dma/include \
$(PICOSDKROOT)/src/rp2040/hardware_regs/include \
$(PICOSDKROOT)/src/rp2040/hardware_structs/include \
$(PICOSDKROOT)/src/boards/include \
$(PICOSDKROOT)/src/rp2_common/pico_bootrom/include \
$(PICOSDKROOT)/src/common/pico_time/include \
$(PICOSDKROOT)/src/common/pico_util/include \
$(PICOSDKROOT)/src/common/pico_sync/include
$(PICOSDKROOT)/src/common/pico_sync/include
PLATFORM_SRC += $(PICOSDKSRC)
EXTRAINCDIRS += $(PICOSDKINC)