290 lines
10 KiB
C
290 lines
10 KiB
C
/* Copyright 2017 Jason Williams
|
|
* Copyright 2018 Jack Humbert
|
|
* Copyright 2018 Yiancar
|
|
* Copyright 2020 MelGeek
|
|
*
|
|
* 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 "is31fl3741.h"
|
|
#include "i2c_master.h"
|
|
#include "gpio.h"
|
|
#include "wait.h"
|
|
|
|
#define IS31FL3741_PWM_0_REGISTER_COUNT 180
|
|
#define IS31FL3741_PWM_1_REGISTER_COUNT 171
|
|
#define IS31FL3741_SCALING_0_REGISTER_COUNT 180
|
|
#define IS31FL3741_SCALING_1_REGISTER_COUNT 171
|
|
|
|
#ifndef IS31FL3741_I2C_TIMEOUT
|
|
# define IS31FL3741_I2C_TIMEOUT 100
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_I2C_PERSISTENCE
|
|
# define IS31FL3741_I2C_PERSISTENCE 0
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_CONFIGURATION
|
|
# define IS31FL3741_CONFIGURATION 0x01
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_PWM_FREQUENCY
|
|
# define IS31FL3741_PWM_FREQUENCY IS31FL3741_PWM_FREQUENCY_29K_HZ
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_SW_PULLUP
|
|
# define IS31FL3741_SW_PULLUP IS31FL3741_PUR_32K_OHM
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_CS_PULLDOWN
|
|
# define IS31FL3741_CS_PULLDOWN IS31FL3741_PDR_32K_OHM
|
|
#endif
|
|
|
|
#ifndef IS31FL3741_GLOBAL_CURRENT
|
|
# define IS31FL3741_GLOBAL_CURRENT 0xFF
|
|
#endif
|
|
|
|
const uint8_t i2c_addresses[IS31FL3741_DRIVER_COUNT] = {
|
|
IS31FL3741_I2C_ADDRESS_1,
|
|
#ifdef IS31FL3741_I2C_ADDRESS_2
|
|
IS31FL3741_I2C_ADDRESS_2,
|
|
# ifdef IS31FL3741_I2C_ADDRESS_3
|
|
IS31FL3741_I2C_ADDRESS_3,
|
|
# ifdef IS31FL3741_I2C_ADDRESS_4
|
|
IS31FL3741_I2C_ADDRESS_4,
|
|
# endif
|
|
# endif
|
|
#endif
|
|
};
|
|
|
|
// These buffers match the IS31FL3741 and IS31FL3741A PWM registers.
|
|
// The scaling buffers match the page 2 and 3 LED On/Off registers.
|
|
// Storing them like this is optimal for I2C transfers to the registers.
|
|
// We could optimize this and take out the unused registers from these
|
|
// buffers and the transfers in is31fl3741_write_pwm_buffer() but it's
|
|
// probably not worth the extra complexity.
|
|
typedef struct is31fl3741_driver_t {
|
|
uint8_t pwm_buffer_0[IS31FL3741_PWM_0_REGISTER_COUNT];
|
|
uint8_t pwm_buffer_1[IS31FL3741_PWM_1_REGISTER_COUNT];
|
|
bool pwm_buffer_dirty;
|
|
uint8_t scaling_buffer_0[IS31FL3741_SCALING_0_REGISTER_COUNT];
|
|
uint8_t scaling_buffer_1[IS31FL3741_SCALING_1_REGISTER_COUNT];
|
|
bool scaling_buffer_dirty;
|
|
} PACKED is31fl3741_driver_t;
|
|
|
|
is31fl3741_driver_t driver_buffers[IS31FL3741_DRIVER_COUNT] = {{
|
|
.pwm_buffer_0 = {0},
|
|
.pwm_buffer_1 = {0},
|
|
.pwm_buffer_dirty = false,
|
|
.scaling_buffer_0 = {0},
|
|
.scaling_buffer_1 = {0},
|
|
.scaling_buffer_dirty = false,
|
|
}};
|
|
|
|
void is31fl3741_write_register(uint8_t index, uint8_t reg, uint8_t data) {
|
|
#if IS31FL3741_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
void is31fl3741_select_page(uint8_t index, uint8_t page) {
|
|
is31fl3741_write_register(index, IS31FL3741_REG_COMMAND_WRITE_LOCK, IS31FL3741_COMMAND_WRITE_LOCK_MAGIC);
|
|
is31fl3741_write_register(index, IS31FL3741_REG_COMMAND, page);
|
|
}
|
|
|
|
void is31fl3741_write_pwm_buffer(uint8_t index) {
|
|
is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_0);
|
|
|
|
// Transmit PWM0 registers in 6 transfers of 30 bytes.
|
|
|
|
// Iterate over the pwm_buffer_0 contents at 30 byte intervals.
|
|
for (uint8_t i = 0; i < IS31FL3741_PWM_0_REGISTER_COUNT; i += 30) {
|
|
#if IS31FL3741_I2C_PERSISTENCE > 0
|
|
for (uint8_t j = 0; j < IS31FL3741_I2C_PERSISTENCE; j++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_1);
|
|
|
|
// Transmit PWM1 registers in 9 transfers of 19 bytes.
|
|
|
|
// Iterate over the pwm_buffer_1 contents at 19 byte intervals.
|
|
for (uint8_t i = 0; i < IS31FL3741_PWM_1_REGISTER_COUNT; i += 19) {
|
|
#if IS31FL3741_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void is31fl3741_init_drivers(void) {
|
|
i2c_init();
|
|
|
|
#if defined(IS31FL3741_SDB_PIN)
|
|
gpio_set_pin_output(IS31FL3741_SDB_PIN);
|
|
gpio_write_pin_high(IS31FL3741_SDB_PIN);
|
|
#endif
|
|
|
|
for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
|
|
is31fl3741_init(i);
|
|
}
|
|
|
|
for (int i = 0; i < IS31FL3741_LED_COUNT; i++) {
|
|
is31fl3741_set_led_control_register(i, true, true, true);
|
|
}
|
|
|
|
for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
|
|
is31fl3741_update_led_control_registers(i);
|
|
}
|
|
}
|
|
|
|
void is31fl3741_init(uint8_t index) {
|
|
// 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.
|
|
// Unlock the command register.
|
|
|
|
is31fl3741_select_page(index, IS31FL3741_COMMAND_FUNCTION);
|
|
|
|
// Set to Normal operation
|
|
is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_CONFIGURATION, IS31FL3741_CONFIGURATION);
|
|
|
|
// Set Golbal Current Control Register
|
|
is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3741_GLOBAL_CURRENT);
|
|
// Set Pull up & Down for SWx CSy
|
|
is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PULLDOWNUP, ((IS31FL3741_CS_PULLDOWN << 4) | IS31FL3741_SW_PULLUP));
|
|
// Set PWM frequency
|
|
is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PWM_FREQUENCY, (IS31FL3741_PWM_FREQUENCY & 0b1111));
|
|
|
|
// is31fl3741_update_led_scaling_registers(index, 0xFF, 0xFF, 0xFF);
|
|
|
|
// Wait 10ms to ensure the device has woken up.
|
|
wait_ms(10);
|
|
}
|
|
|
|
uint8_t get_pwm_value(uint8_t driver, uint16_t reg) {
|
|
if (reg & 0x100) {
|
|
return driver_buffers[driver].pwm_buffer_1[reg & 0xFF];
|
|
} else {
|
|
return driver_buffers[driver].pwm_buffer_0[reg];
|
|
}
|
|
}
|
|
|
|
void set_pwm_value(uint8_t driver, uint16_t reg, uint8_t value) {
|
|
if (reg & 0x100) {
|
|
driver_buffers[driver].pwm_buffer_1[reg & 0xFF] = value;
|
|
} else {
|
|
driver_buffers[driver].pwm_buffer_0[reg] = value;
|
|
}
|
|
}
|
|
|
|
void is31fl3741_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
|
|
is31fl3741_led_t led;
|
|
|
|
if (index >= 0 && index < IS31FL3741_LED_COUNT) {
|
|
memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led));
|
|
|
|
if (get_pwm_value(led.driver, led.r) == red && get_pwm_value(led.driver, led.g) == green && get_pwm_value(led.driver, led.b) == blue) {
|
|
return;
|
|
}
|
|
|
|
set_pwm_value(led.driver, led.r, red);
|
|
set_pwm_value(led.driver, led.g, green);
|
|
set_pwm_value(led.driver, led.b, blue);
|
|
driver_buffers[led.driver].pwm_buffer_dirty = true;
|
|
}
|
|
}
|
|
|
|
void is31fl3741_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
|
|
for (int i = 0; i < IS31FL3741_LED_COUNT; i++) {
|
|
is31fl3741_set_color(i, red, green, blue);
|
|
}
|
|
}
|
|
|
|
void set_scaling_value(uint8_t driver, uint16_t reg, uint8_t value) {
|
|
if (reg & 0x100) {
|
|
driver_buffers[driver].scaling_buffer_1[reg & 0xFF] = value;
|
|
} else {
|
|
driver_buffers[driver].scaling_buffer_0[reg] = value;
|
|
}
|
|
}
|
|
|
|
void is31fl3741_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
|
|
is31fl3741_led_t led;
|
|
memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led));
|
|
|
|
set_scaling_value(led.driver, led.r, red ? 0xFF : 0x00);
|
|
set_scaling_value(led.driver, led.g, green ? 0xFF : 0x00);
|
|
set_scaling_value(led.driver, led.b, blue ? 0xFF : 0x00);
|
|
|
|
driver_buffers[led.driver].scaling_buffer_dirty = true;
|
|
}
|
|
|
|
void is31fl3741_update_pwm_buffers(uint8_t index) {
|
|
if (driver_buffers[index].pwm_buffer_dirty) {
|
|
is31fl3741_write_pwm_buffer(index);
|
|
|
|
driver_buffers[index].pwm_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3741_set_pwm_buffer(const is31fl3741_led_t *pled, uint8_t red, uint8_t green, uint8_t blue) {
|
|
set_pwm_value(pled->driver, pled->r, red);
|
|
set_pwm_value(pled->driver, pled->g, green);
|
|
set_pwm_value(pled->driver, pled->b, blue);
|
|
driver_buffers[pled->driver].pwm_buffer_dirty = true;
|
|
}
|
|
|
|
void is31fl3741_update_led_control_registers(uint8_t index) {
|
|
if (driver_buffers[index].scaling_buffer_dirty) {
|
|
is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_0);
|
|
|
|
for (uint8_t i = 0; i < IS31FL3741_SCALING_0_REGISTER_COUNT; i++) {
|
|
is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_0[i]);
|
|
}
|
|
|
|
is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_1);
|
|
|
|
for (uint8_t i = 0; i < IS31FL3741_SCALING_1_REGISTER_COUNT; i++) {
|
|
is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_1[i]);
|
|
}
|
|
|
|
driver_buffers[index].scaling_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t red, uint8_t green, uint8_t blue) {
|
|
set_scaling_value(pled->driver, pled->r, red);
|
|
set_scaling_value(pled->driver, pled->g, green);
|
|
set_scaling_value(pled->driver, pled->b, blue);
|
|
driver_buffers[pled->driver].scaling_buffer_dirty = true;
|
|
}
|
|
|
|
void is31fl3741_flush(void) {
|
|
for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
|
|
is31fl3741_update_pwm_buffers(i);
|
|
}
|
|
}
|