100 lines
3 KiB
C
100 lines
3 KiB
C
/**
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* @file aw9523b.c
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* @brief driver implementation of aw9523b
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*
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* Copyright 2020 astro <yuleiz@gmail.com>
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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 <stdbool.h>
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#include "aw9523b.h"
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#include "wait.h"
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#include "i2c_master.h"
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#define AW9523B_P0_INPUT 0x00
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#define AW9523B_P1_INPUT 0x01
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#define AW9523B_P0_OUTPUT 0x02
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#define AW9523B_P1_OUTPUT 0x03
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#define AW9523B_P0_CONF 0x04
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#define AW9523B_P1_CONF 0x05
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#define AW9523B_P0_INT 0x06
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#define AW9523B_P1_INT 0x07
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#define AW9523B_ID 0x10
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#define AW9523B_CTL 0x11
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#define AW9523B_P0_LED 0x12
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#define AW9523B_P1_LED 0x13
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#define AW9523B_RESET 0x7F
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#define TIMEOUT 100
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#define PWM2BUF(x) ((x) - AW9523B_PWM_BASE)
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static uint8_t aw9523b_pwm_buf[AW9523B_PWM_SIZE];
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static bool aw9523b_pwm_dirty = false;
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void aw9523b_init(uint8_t addr)
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{
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i2c_init();
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// reset chip
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uint8_t data = 0;
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i2c_write_register(addr, AW9523B_RESET, &data, 1, TIMEOUT);
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wait_ms(1);
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// set max led current
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data = 0x03; // 37mA/4
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i2c_write_register(addr, AW9523B_CTL, &data, 1, TIMEOUT);
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// set port to led mode
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data = 0;
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i2c_write_register(addr, AW9523B_P0_LED, &data, 1, TIMEOUT);
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i2c_write_register(addr, AW9523B_P1_LED, &data, 1, TIMEOUT);
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// clear pwm buff
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for (uint8_t i = 0; i < 16; i++) {
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aw9523b_pwm_buf[i] = 0;
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}
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aw9523b_pwm_dirty = false;
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}
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void aw9523b_set_color(int index, uint8_t red, uint8_t green, uint8_t blue)
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{
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if (index >= AW9523B_RGB_NUM) return;
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aw9523b_led led = g_aw9523b_leds[index];
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aw9523b_pwm_buf[PWM2BUF(led.r)] = red;
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aw9523b_pwm_buf[PWM2BUF(led.g)] = green;
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aw9523b_pwm_buf[PWM2BUF(led.b)] = blue;
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aw9523b_pwm_dirty = true;
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}
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void aw9523b_set_color_all(uint8_t red, uint8_t green, uint8_t blue)
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{
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for (uint8_t i = 0; i < AW9523B_RGB_NUM; i++) {
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aw9523b_set_color(i, red, green, blue);
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}
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aw9523b_pwm_dirty = true;
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}
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void aw9523b_update_pwm_buffers(uint8_t addr)
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{
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if (aw9523b_pwm_dirty) {
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for (uint8_t i = 0; i < AW9523B_RGB_NUM; i++){
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aw9523b_led led = g_aw9523b_leds[i];
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i2c_write_register(addr, led.r, &aw9523b_pwm_buf[PWM2BUF(led.r)], 1, TIMEOUT);
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i2c_write_register(addr, led.g, &aw9523b_pwm_buf[PWM2BUF(led.g)], 1, TIMEOUT);
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i2c_write_register(addr, led.b, &aw9523b_pwm_buf[PWM2BUF(led.b)], 1, TIMEOUT);
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}
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aw9523b_pwm_dirty = false;
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}
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}
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