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Add mozc double sided version.

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Change-Id: I3c50b5c3435c3c01c79bfc14c5d605701a423356
Co-authored-by: Takashi Toyoshima <toyoshim@google.com>
Co-authored-by: Shun Ikejima <ikejima@google.com>
Reviewed-by: Eliot Courtney <edcourtney@google.com>
This commit is contained in:
Takashi Toyoshima
2024-09-19 16:07:44 +09:00
parent f803ba8751
commit 65db5df370
115 changed files with 233230 additions and 26 deletions
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57
mozc-doublesided/firmware/Core/Src/led.c Normal file
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// Copyright 2024 Google Inc.
// Use of this source code is governed by an Apache License that can be found in
// the LICENSE file.
#include "led.h"
#include "main.h"
extern SPI_HandleTypeDef hspi1;
#define RESET_COUNT 16
#define LED_COUNT 8
#define DATA_LENGTH 6
#define DMA_BUFFER_SIZE (RESET_COUNT + LED_COUNT * DATA_LENGTH + 1) << 1
// 0xe: 1110 - HIGH
// 0x8: 1000 - LOW
static uint16_t dma_buffer[DMA_BUFFER_SIZE] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // RESET
0, 0, 0, 0, 0, 0, // LED 0
0, 0, 0, 0, 0, 0, // LED 1
0, 0, 0, 0, 0, 0, // LED 2
0, 0, 0, 0, 0, 0, // LED 3
0, 0, 0, 0, 0, 0, // LED 4
0, 0, 0, 0, 0, 0, // LED 5
0, 0, 0, 0, 0, 0, // LED 6
0, 0, 0, 0, 0, 0, // LED 7
0xffff, // EOD
};
static uint32_t to_spi_value(uint8_t value) {
uint32_t spi_value = 0;
for (uint8_t bit_mask = 0x80; bit_mask != 0; bit_mask >>= 1) {
spi_value <<= 4;
if (value & bit_mask) {
spi_value |= 0xe;
} else {
spi_value |= 0x8;
}
}
return spi_value;
}
void set_spi_value(uint8_t offset, uint32_t value) {
dma_buffer[RESET_COUNT + offset * 2 + 0] = value >> 16;
dma_buffer[RESET_COUNT + offset * 2 + 1] = value & 0xffff;
}
void led_set(uint8_t index, uint8_t r, uint8_t g, uint8_t b) {
set_spi_value(index * 3 + 0, to_spi_value(g));
set_spi_value(index * 3 + 1, to_spi_value(r));
set_spi_value(index * 3 + 2, to_spi_value(b));
}
void led_flush(void) {
HAL_SPI_Transmit_DMA(&hspi1, (uint8_t *)dma_buffer, DMA_BUFFER_SIZE);
}