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/**
* @file aw9523b.c
* @brief driver implementation of aw9523b
*
* Copyright 2020 astro <yuleiz@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdbool.h>
#include "aw9523b.h"
#include "wait.h"
#include "i2c_master.h"
#define AW9523B_P0_INPUT 0x00
#define AW9523B_P1_INPUT 0x01
#define AW9523B_P0_OUTPUT 0x02
#define AW9523B_P1_OUTPUT 0x03
#define AW9523B_P0_CONF 0x04
#define AW9523B_P1_CONF 0x05
#define AW9523B_P0_INT 0x06
#define AW9523B_P1_INT 0x07
#define AW9523B_ID 0x10
#define AW9523B_CTL 0x11
#define AW9523B_P0_LED 0x12
#define AW9523B_P1_LED 0x13
#define AW9523B_RESET 0x7F
#define TIMEOUT 100
#define PWM2BUF(x) ((x) - AW9523B_PWM_BASE)
static uint8_t aw9523b_pwm_buf[AW9523B_PWM_SIZE];
static bool aw9523b_pwm_dirty = false;
void aw9523b_init(uint8_t addr)
{
i2c_init();
// reset chip
uint8_t data = 0;
i2c_write_register(addr, AW9523B_RESET, &data, 1, TIMEOUT);
wait_ms(1);
// set max led current
data = 0x03; // 37mA/4
i2c_write_register(addr, AW9523B_CTL, &data, 1, TIMEOUT);
// set port to led mode
data = 0;
i2c_write_register(addr, AW9523B_P0_LED, &data, 1, TIMEOUT);
i2c_write_register(addr, AW9523B_P1_LED, &data, 1, TIMEOUT);
// clear pwm buff
for (uint8_t i = 0; i < 16; i++) {
aw9523b_pwm_buf[i] = 0;
}
aw9523b_pwm_dirty = false;
}
void aw9523b_set_color(int index, uint8_t red, uint8_t green, uint8_t blue)
{
if (index >= AW9523B_RGB_NUM) return;
aw9523b_led led = g_aw9523b_leds[index];
aw9523b_pwm_buf[PWM2BUF(led.r)] = red;
aw9523b_pwm_buf[PWM2BUF(led.g)] = green;
aw9523b_pwm_buf[PWM2BUF(led.b)] = blue;
aw9523b_pwm_dirty = true;
}
void aw9523b_set_color_all(uint8_t red, uint8_t green, uint8_t blue)
{
for (uint8_t i = 0; i < AW9523B_RGB_NUM; i++) {
aw9523b_set_color(i, red, green, blue);
}
aw9523b_pwm_dirty = true;
}
void aw9523b_update_pwm_buffers(uint8_t addr)
{
if (aw9523b_pwm_dirty) {
for (uint8_t i = 0; i < AW9523B_RGB_NUM; i++){
aw9523b_led led = g_aw9523b_leds[i];
i2c_write_register(addr, led.r, &aw9523b_pwm_buf[PWM2BUF(led.r)], 1, TIMEOUT);
i2c_write_register(addr, led.g, &aw9523b_pwm_buf[PWM2BUF(led.g)], 1, TIMEOUT);
i2c_write_register(addr, led.b, &aw9523b_pwm_buf[PWM2BUF(led.b)], 1, TIMEOUT);
}
aw9523b_pwm_dirty = false;
}
}
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