243 lines
8.4 KiB
C
243 lines
8.4 KiB
C
/* Copyright 2017 Jason Williams
|
|
* Copyright 2018 Jack Humbert
|
|
* Copyright 2018 Yiancar
|
|
* Copyright 2020 MelGeek
|
|
* Copyright 2021 MasterSpoon
|
|
*
|
|
* 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 "is31fl3745.h"
|
|
#include <string.h>
|
|
#include "i2c_master.h"
|
|
#include "wait.h"
|
|
|
|
#define IS31FL3745_PWM_REGISTER_COUNT 144
|
|
#define IS31FL3745_SCALING_REGISTER_COUNT 144
|
|
|
|
#ifndef IS31FL3745_I2C_TIMEOUT
|
|
# define IS31FL3745_I2C_TIMEOUT 100
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_I2C_PERSISTENCE
|
|
# define IS31FL3745_I2C_PERSISTENCE 0
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_CONFIGURATION
|
|
# define IS31FL3745_CONFIGURATION 0x31
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_SW_PULLDOWN
|
|
# define IS31FL3745_SW_PULLDOWN IS31FL3745_PDR_2K_OHM_SW_OFF
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_CS_PULLUP
|
|
# define IS31FL3745_CS_PULLUP IS31FL3745_PUR_2K_OHM_CS_OFF
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_GLOBAL_CURRENT
|
|
# define IS31FL3745_GLOBAL_CURRENT 0xFF
|
|
#endif
|
|
|
|
#ifndef IS31FL3745_SYNC_1
|
|
# define IS31FL3745_SYNC_1 IS31FL3745_SYNC_NONE
|
|
#endif
|
|
#ifndef IS31FL3745_SYNC_2
|
|
# define IS31FL3745_SYNC_2 IS31FL3745_SYNC_NONE
|
|
#endif
|
|
#ifndef IS31FL3745_SYNC_3
|
|
# define IS31FL3745_SYNC_3 IS31FL3745_SYNC_NONE
|
|
#endif
|
|
#ifndef IS31FL3745_SYNC_4
|
|
# define IS31FL3745_SYNC_4 IS31FL3745_SYNC_NONE
|
|
#endif
|
|
|
|
uint8_t i2c_transfer_buffer[20] = {0xFF};
|
|
|
|
uint8_t g_pwm_buffer[IS31FL3745_DRIVER_COUNT][IS31FL3745_PWM_REGISTER_COUNT];
|
|
bool g_pwm_buffer_update_required[IS31FL3745_DRIVER_COUNT] = {false};
|
|
bool g_scaling_registers_update_required[IS31FL3745_DRIVER_COUNT] = {false};
|
|
|
|
uint8_t g_scaling_registers[IS31FL3745_DRIVER_COUNT][IS31FL3745_SCALING_REGISTER_COUNT];
|
|
|
|
void is31fl3745_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
|
|
i2c_transfer_buffer[0] = reg;
|
|
i2c_transfer_buffer[1] = data;
|
|
|
|
#if IS31FL3745_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < IS31FL3745_I2C_PERSISTENCE; i++) {
|
|
if (i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3745_I2C_TIMEOUT) == 0) break;
|
|
}
|
|
#else
|
|
i2c_transmit(addr << 1, i2c_transfer_buffer, 2, IS31FL3745_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
void is31fl3745_select_page(uint8_t addr, uint8_t page) {
|
|
is31fl3745_write_register(addr, IS31FL3745_REG_COMMAND_WRITE_LOCK, IS31FL3745_COMMAND_WRITE_LOCK_MAGIC);
|
|
is31fl3745_write_register(addr, IS31FL3745_REG_COMMAND, page);
|
|
}
|
|
|
|
void is31fl3745_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
|
|
// Assumes page 0 is already selected.
|
|
// If any of the transactions fails function returns false.
|
|
// Transmit PWM registers in 12 transfers of 16 bytes.
|
|
// i2c_transfer_buffer[] is 20 bytes
|
|
|
|
// Iterate over the pwm_buffer contents at 16 byte intervals.
|
|
for (int i = 0; i < IS31FL3745_PWM_REGISTER_COUNT; i += 16) {
|
|
i2c_transfer_buffer[0] = i + 1;
|
|
// Copy the data from i to i+15.
|
|
// Device will auto-increment register for data after the first byte
|
|
// Thus this sets registers 0x00-0x0F, 0x10-0x1F, etc. in one transfer.
|
|
memcpy(i2c_transfer_buffer + 1, pwm_buffer + i, 16);
|
|
|
|
#if IS31FL3745_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < IS31FL3745_I2C_PERSISTENCE; i++) {
|
|
if (i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3745_I2C_TIMEOUT) != 0) break;
|
|
}
|
|
#else
|
|
i2c_transmit(addr << 1, i2c_transfer_buffer, 17, IS31FL3745_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void is31fl3745_init_drivers(void) {
|
|
i2c_init();
|
|
|
|
is31fl3745_init(IS31FL3745_I2C_ADDRESS_1, IS31FL3745_SYNC_1);
|
|
#if defined(IS31FL3745_I2C_ADDRESS_2)
|
|
is31fl3745_init(IS31FL3745_I2C_ADDRESS_2, IS31FL3745_SYNC_2);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_3)
|
|
is31fl3745_init(IS31FL3745_I2C_ADDRESS_3, IS31FL3745_SYNC_3);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_4)
|
|
is31fl3745_init(IS31FL3745_I2C_ADDRESS_4, IS31FL3745_SYNC_4);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
for (int i = 0; i < IS31FL3745_LED_COUNT; i++) {
|
|
is31fl3745_set_scaling_register(i, 0xFF, 0xFF, 0xFF);
|
|
}
|
|
|
|
is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_1, 0);
|
|
#if defined(IS31FL3745_I2C_ADDRESS_2)
|
|
is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_2, 1);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_3)
|
|
is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_3, 2);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_4)
|
|
is31fl3745_update_scaling_registers(IS31FL3745_I2C_ADDRESS_4, 3);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
}
|
|
|
|
void is31fl3745_init(uint8_t addr, uint8_t sync) {
|
|
// In order to avoid the LEDs being driven with garbage data
|
|
// in the LED driver's PWM registers, shutdown is enabled last.
|
|
// Set up the mode and other settings, clear the PWM registers,
|
|
// then disable software shutdown.
|
|
|
|
is31fl3745_select_page(addr, IS31FL3745_COMMAND_SCALING);
|
|
|
|
// Turn off all LEDs.
|
|
for (int i = 0; i < IS31FL3745_SCALING_REGISTER_COUNT; i++) {
|
|
is31fl3745_write_register(addr, i + 1, 0x00);
|
|
}
|
|
|
|
is31fl3745_select_page(addr, IS31FL3745_COMMAND_PWM);
|
|
|
|
for (int i = 0; i < IS31FL3745_PWM_REGISTER_COUNT; i++) {
|
|
is31fl3745_write_register(addr, i + 1, 0x00);
|
|
}
|
|
|
|
is31fl3745_select_page(addr, IS31FL3745_COMMAND_FUNCTION);
|
|
|
|
is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_PULLDOWNUP, (IS31FL3745_SW_PULLDOWN << 4) | IS31FL3745_CS_PULLUP);
|
|
is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3745_GLOBAL_CURRENT);
|
|
is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_SPREAD_SPECTRUM, (sync & 0b11) << 6);
|
|
is31fl3745_write_register(addr, IS31FL3745_FUNCTION_REG_CONFIGURATION, IS31FL3745_CONFIGURATION);
|
|
|
|
// Wait 10ms to ensure the device has woken up.
|
|
wait_ms(10);
|
|
}
|
|
|
|
void is31fl3745_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
|
|
is31fl3745_led_t led;
|
|
|
|
if (index >= 0 && index < IS31FL3745_LED_COUNT) {
|
|
memcpy_P(&led, (&g_is31fl3745_leds[index]), sizeof(led));
|
|
|
|
if (g_pwm_buffer[led.driver][led.r] == red && g_pwm_buffer[led.driver][led.g] == green && g_pwm_buffer[led.driver][led.b] == blue) {
|
|
return;
|
|
}
|
|
|
|
g_pwm_buffer_update_required[led.driver] = true;
|
|
g_pwm_buffer[led.driver][led.r] = red;
|
|
g_pwm_buffer[led.driver][led.g] = green;
|
|
g_pwm_buffer[led.driver][led.b] = blue;
|
|
}
|
|
}
|
|
|
|
void is31fl3745_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
|
|
for (int i = 0; i < IS31FL3745_LED_COUNT; i++) {
|
|
is31fl3745_set_color(i, red, green, blue);
|
|
}
|
|
}
|
|
|
|
void is31fl3745_set_scaling_register(uint8_t index, uint8_t red, uint8_t green, uint8_t blue) {
|
|
is31fl3745_led_t led;
|
|
memcpy_P(&led, (&g_is31fl3745_leds[index]), sizeof(led));
|
|
|
|
g_scaling_registers[led.driver][led.r] = red;
|
|
g_scaling_registers[led.driver][led.g] = green;
|
|
g_scaling_registers[led.driver][led.b] = blue;
|
|
g_scaling_registers_update_required[led.driver] = true;
|
|
}
|
|
|
|
void is31fl3745_update_pwm_buffers(uint8_t addr, uint8_t index) {
|
|
if (g_pwm_buffer_update_required[index]) {
|
|
is31fl3745_select_page(addr, IS31FL3745_COMMAND_PWM);
|
|
|
|
is31fl3745_write_pwm_buffer(addr, g_pwm_buffer[index]);
|
|
|
|
g_pwm_buffer_update_required[index] = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3745_update_scaling_registers(uint8_t addr, uint8_t index) {
|
|
if (g_scaling_registers_update_required[index]) {
|
|
is31fl3745_select_page(addr, IS31FL3745_COMMAND_SCALING);
|
|
|
|
for (int i = 0; i < IS31FL3745_SCALING_REGISTER_COUNT; i++) {
|
|
is31fl3745_write_register(addr, i + 1, g_scaling_registers[index][i]);
|
|
}
|
|
|
|
g_scaling_registers_update_required[index] = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3745_flush(void) {
|
|
is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_1, 0);
|
|
#if defined(IS31FL3745_I2C_ADDRESS_2)
|
|
is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_2, 1);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_3)
|
|
is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_3, 2);
|
|
# if defined(IS31FL3745_I2C_ADDRESS_4)
|
|
is31fl3745_update_pwm_buffers(IS31FL3745_I2C_ADDRESS_4, 3);
|
|
# endif
|
|
# endif
|
|
#endif
|
|
}
|