214 lines
7.3 KiB
C
214 lines
7.3 KiB
C
/* Copyright 2024 HorrorTroll <https://github.com/HorrorTroll>
|
|
* Copyright 2024 Harrison Chan (Xelus)
|
|
* Copyright 2024 Dimitris Mantzouranis <d3xter93@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 "is31fl3729-mono.h"
|
|
#include "i2c_master.h"
|
|
#include "gpio.h"
|
|
#include "wait.h"
|
|
|
|
#define IS31FL3729_PWM_REGISTER_COUNT 143
|
|
#define IS31FL3729_SCALING_REGISTER_COUNT 16
|
|
|
|
#ifndef IS31FL3729_I2C_TIMEOUT
|
|
# define IS31FL3729_I2C_TIMEOUT 100
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_I2C_PERSISTENCE
|
|
# define IS31FL3729_I2C_PERSISTENCE 0
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_CONFIGURATION
|
|
# define IS31FL3729_CONFIGURATION IS31FL3729_CONFIG_SWS_15_9
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_GLOBAL_CURRENT
|
|
# define IS31FL3729_GLOBAL_CURRENT 0x40
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_SW_PULLDOWN
|
|
# define IS31FL3729_SW_PULLDOWN IS31FL3729_SW_PULLDOWN_2K_OHM_SW_OFF
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_CS_PULLUP
|
|
# define IS31FL3729_CS_PULLUP IS31FL3729_CS_PULLUP_2K_OHM_CS_OFF
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_SPREAD_SPECTRUM
|
|
# define IS31FL3729_SPREAD_SPECTRUM IS31FL3729_SPREAD_SPECTRUM_DISABLE
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_SPREAD_SPECTRUM_RANGE
|
|
# define IS31FL3729_SPREAD_SPECTRUM_RANGE IS31FL3729_SPREAD_SPECTRUM_RANGE_5_PERCENT
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME
|
|
# define IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME_1980_US
|
|
#endif
|
|
|
|
#ifndef IS31FL3729_PWM_FREQUENCY
|
|
# define IS31FL3729_PWM_FREQUENCY IS31FL3729_PWM_FREQUENCY_32K_HZ
|
|
#endif
|
|
|
|
const uint8_t i2c_addresses[IS31FL3729_DRIVER_COUNT] = {
|
|
IS31FL3729_I2C_ADDRESS_1,
|
|
#ifdef IS31FL3729_I2C_ADDRESS_2
|
|
IS31FL3729_I2C_ADDRESS_2,
|
|
# ifdef IS31FL3729_I2C_ADDRESS_3
|
|
IS31FL3729_I2C_ADDRESS_3,
|
|
# ifdef IS31FL3729_I2C_ADDRESS_4
|
|
IS31FL3729_I2C_ADDRESS_4,
|
|
# endif
|
|
# endif
|
|
#endif
|
|
};
|
|
|
|
// These buffers match the PWM & scaling registers.
|
|
// Storing them like this is optimal for I2C transfers to the registers.
|
|
typedef struct is31fl3729_driver_t {
|
|
uint8_t pwm_buffer[IS31FL3729_PWM_REGISTER_COUNT];
|
|
bool pwm_buffer_dirty;
|
|
uint8_t scaling_buffer[IS31FL3729_SCALING_REGISTER_COUNT];
|
|
bool scaling_buffer_dirty;
|
|
} PACKED is31fl3729_driver_t;
|
|
|
|
is31fl3729_driver_t driver_buffers[IS31FL3729_DRIVER_COUNT] = {{
|
|
.pwm_buffer = {0},
|
|
.pwm_buffer_dirty = false,
|
|
.scaling_buffer = {0},
|
|
.scaling_buffer_dirty = false,
|
|
}};
|
|
|
|
void is31fl3729_write_register(uint8_t index, uint8_t reg, uint8_t data) {
|
|
#if IS31FL3729_I2C_PERSISTENCE > 0
|
|
for (uint8_t i = 0; i < IS31FL3729_I2C_PERSISTENCE; i++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3729_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
void is31fl3729_write_pwm_buffer(uint8_t index) {
|
|
// Transmit PWM registers in 11 transfers of 13 bytes.
|
|
|
|
// Iterate over the pwm_buffer contents at 13 byte intervals.
|
|
for (uint8_t i = 0; i <= IS31FL3729_PWM_REGISTER_COUNT; i += 13) {
|
|
#if IS31FL3729_I2C_PERSISTENCE > 0
|
|
for (uint8_t j = 0; j < IS31FL3729_I2C_PERSISTENCE; j++) {
|
|
if (i2c_write_register(i2c_addresses[index] << 1, IS31FL3729_REG_PWM + i, driver_buffers[index].pwm_buffer + i, 13, IS31FL3729_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
|
|
}
|
|
#else
|
|
i2c_write_register(i2c_addresses[index] << 1, IS31FL3729_REG_PWM + i, driver_buffers[index].pwm_buffer + i, 13, IS31FL3729_I2C_TIMEOUT);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void is31fl3729_init_drivers(void) {
|
|
i2c_init();
|
|
|
|
#if defined(IS31FL3729_SDB_PIN)
|
|
gpio_set_pin_output(IS31FL3729_SDB_PIN);
|
|
gpio_write_pin_high(IS31FL3729_SDB_PIN);
|
|
#endif
|
|
|
|
for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) {
|
|
is31fl3729_init(i);
|
|
}
|
|
|
|
for (int i = 0; i < IS31FL3729_LED_COUNT; i++) {
|
|
is31fl3729_set_scaling_register(i, 0xFF);
|
|
}
|
|
|
|
for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) {
|
|
is31fl3729_update_scaling_registers(i);
|
|
}
|
|
}
|
|
|
|
void is31fl3729_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.
|
|
|
|
is31fl3729_write_register(index, IS31FL3729_REG_PULLDOWNUP, ((IS31FL3729_SW_PULLDOWN & 0b111) << 4) | (IS31FL3729_CS_PULLUP & 0b111));
|
|
is31fl3729_write_register(index, IS31FL3729_REG_SPREAD_SPECTRUM, ((IS31FL3729_SPREAD_SPECTRUM & 0b1) << 4) | ((IS31FL3729_SPREAD_SPECTRUM_RANGE & 0b11) << 2) | (IS31FL3729_SPREAD_SPECTRUM_CYCLE_TIME & 0b11));
|
|
is31fl3729_write_register(index, IS31FL3729_REG_PWM_FREQUENCY, IS31FL3729_PWM_FREQUENCY);
|
|
is31fl3729_write_register(index, IS31FL3729_REG_GLOBAL_CURRENT, IS31FL3729_GLOBAL_CURRENT);
|
|
is31fl3729_write_register(index, IS31FL3729_REG_CONFIGURATION, IS31FL3729_CONFIGURATION);
|
|
|
|
// Wait 10ms to ensure the device has woken up.
|
|
wait_ms(10);
|
|
}
|
|
|
|
void is31fl3729_set_value(int index, uint8_t value) {
|
|
is31fl3729_led_t led;
|
|
if (index >= 0 && index < IS31FL3729_LED_COUNT) {
|
|
memcpy_P(&led, (&g_is31fl3729_leds[index]), sizeof(led));
|
|
|
|
if (driver_buffers[led.driver].pwm_buffer[led.v] == value) {
|
|
return;
|
|
}
|
|
|
|
driver_buffers[led.driver].pwm_buffer[led.v] = value;
|
|
driver_buffers[led.driver].pwm_buffer_dirty = true;
|
|
}
|
|
}
|
|
|
|
void is31fl3729_set_value_all(uint8_t value) {
|
|
for (int i = 0; i < IS31FL3729_LED_COUNT; i++) {
|
|
is31fl3729_set_value(i, value);
|
|
}
|
|
}
|
|
|
|
void is31fl3729_set_scaling_register(uint8_t index, uint8_t value) {
|
|
is31fl3729_led_t led;
|
|
memcpy_P(&led, (&g_is31fl3729_leds[index]), sizeof(led));
|
|
|
|
// need to do a bit of checking here since 3729 scaling is per CS pin.
|
|
// not the usual per single LED key as per other ISSI drivers
|
|
// only enable them, since they should be default disabled
|
|
int cs_value = (led.v & 0x0F) - 1;
|
|
|
|
driver_buffers[led.driver].scaling_buffer[cs_value] = value;
|
|
driver_buffers[led.driver].scaling_buffer_dirty = true;
|
|
}
|
|
|
|
void is31fl3729_update_pwm_buffers(uint8_t index) {
|
|
if (driver_buffers[index].pwm_buffer_dirty) {
|
|
is31fl3729_write_pwm_buffer(index);
|
|
|
|
driver_buffers[index].pwm_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3729_update_scaling_registers(uint8_t index) {
|
|
if (driver_buffers[index].scaling_buffer_dirty) {
|
|
for (uint8_t i = 0; i < IS31FL3729_SCALING_REGISTER_COUNT; i++) {
|
|
is31fl3729_write_register(index, IS31FL3729_REG_SCALING + i, driver_buffers[index].scaling_buffer[i]);
|
|
}
|
|
|
|
driver_buffers[index].scaling_buffer_dirty = false;
|
|
}
|
|
}
|
|
|
|
void is31fl3729_flush(void) {
|
|
for (uint8_t i = 0; i < IS31FL3729_DRIVER_COUNT; i++) {
|
|
is31fl3729_update_pwm_buffers(i);
|
|
}
|
|
}
|