100 lines
3.3 KiB
C
100 lines
3.3 KiB
C
/* Copyright 2018-2021 James Laird-Wah, Islam Sharabash
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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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#include "leds.h"
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#include <string.h>
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#include "i2c_master.h"
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#include "led_tables.h"
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#include "rgb_matrix.h"
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#include "wait.h"
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#include "raise.h"
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#include "wire-protocol-constants.h"
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#include "print.h"
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// Color order of LEDs is Green, Red, Blue.
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typedef struct PACKED {
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uint8_t r;
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uint8_t g;
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uint8_t b;
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} raiseRGB;
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#define LEDS_PER_HAND 72
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#define LED_BANKS 9
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#define LEDS_PER_BANK 8
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#define LED_BYTES_PER_BANK (sizeof(raiseRGB) * LEDS_PER_BANK)
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// shifting << 1 is because drivers/chibios/i2c_master.h expects the address
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// shifted.
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// 0x58 and 0x59 are the addresses defined in dygma/raise/Hand.h
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#define I2C_ADDR_LEFT (0x58 << 1)
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#define I2C_ADDR_RIGHT (0x59 << 1)
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#define I2C_ADDR(hand) ((hand) ? I2C_ADDR_RIGHT : I2C_ADDR_LEFT)
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#define LEFT 0
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#define RIGHT 1
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static raiseRGB led_pending[2 * LEDS_PER_HAND];
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static raiseRGB led_state[2 * LEDS_PER_HAND];
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static void set_color(int index, uint8_t r, uint8_t g, uint8_t b) {
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int sled = led_map[index];
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// The red component of the LED is apparently stronger than the others.
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// From: https://github.com/keyboardio/Kaleidoscope/blob/aba8c9ee66bbb5ded15135618d2b2964ee82b2cc/plugins/Kaleidoscope-Hardware-Dygma-Raise/src/kaleidoscope/device/dygma/raise/RaiseSide.cpp#L235-L242
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if (r >= 26) {
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r -= 26;
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}
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led_pending[sled].r = r;
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led_pending[sled].g = g;
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led_pending[sled].b = b;
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}
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static void set_color_all(uint8_t r, uint8_t g, uint8_t b) {
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for (int i = 0; i < RGB_MATRIX_LED_COUNT; i++) set_color(i, r, g, b);
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}
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static void init(void) {
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set_color_all(0,0,0);
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}
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static void flush(void) {
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uint8_t command[1 + LED_BYTES_PER_BANK];
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// SUBTLE(ibash) alternate hands when transmitting led data, otherwise the
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// mcu in the hand seems to have trouble keeping up with the i2c
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// transmission
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for (int bank = 0; bank < LED_BANKS; bank++) {
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for (int hand = 0; hand < 2; hand++) {
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int addr = I2C_ADDR(hand);
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int i = (hand * LEDS_PER_HAND) + (bank * LEDS_PER_BANK);
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if (memcmp(&led_state[i], &led_pending[i], LED_BYTES_PER_BANK) == 0) {
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// No change.
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continue;
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}
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// Update LED state
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memcpy(&led_state[i], &led_pending[i], LED_BYTES_PER_BANK);
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command[0] = TWI_CMD_LED_BASE + bank;
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memcpy(&command[1], &led_pending[i], LED_BYTES_PER_BANK);
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i2c_transmit(addr, command, sizeof(command), I2C_TIMEOUT);
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// delay to prevent issues with the i2c bus
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wait_us(10);
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}
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}
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}
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const rgb_matrix_driver_t rgb_matrix_driver = {.init = init, .flush = flush, .set_color = set_color, .set_color_all = set_color_all};
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