283 lines
9.5 KiB
C
283 lines
9.5 KiB
C
/* Copyright 2017 Jason Williams
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* Copyright 2018 Jack Humbert
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* Copyright 2018 Yiancar
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* Copyright 2020 MelGeek
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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 "is31fl3741-mono.h"
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#include "i2c_master.h"
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#include "gpio.h"
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#include "wait.h"
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#define IS31FL3741_PWM_0_REGISTER_COUNT 180
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#define IS31FL3741_PWM_1_REGISTER_COUNT 171
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#define IS31FL3741_SCALING_0_REGISTER_COUNT 180
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#define IS31FL3741_SCALING_1_REGISTER_COUNT 171
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#ifndef IS31FL3741_I2C_TIMEOUT
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# define IS31FL3741_I2C_TIMEOUT 100
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#endif
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#ifndef IS31FL3741_I2C_PERSISTENCE
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# define IS31FL3741_I2C_PERSISTENCE 0
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#endif
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#ifndef IS31FL3741_CONFIGURATION
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# define IS31FL3741_CONFIGURATION 0x01
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#endif
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#ifndef IS31FL3741_PWM_FREQUENCY
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# define IS31FL3741_PWM_FREQUENCY IS31FL3741_PWM_FREQUENCY_29K_HZ
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#endif
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#ifndef IS31FL3741_SW_PULLUP
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# define IS31FL3741_SW_PULLUP IS31FL3741_PUR_32K_OHM
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#endif
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#ifndef IS31FL3741_CS_PULLDOWN
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# define IS31FL3741_CS_PULLDOWN IS31FL3741_PDR_32K_OHM
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#endif
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#ifndef IS31FL3741_GLOBAL_CURRENT
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# define IS31FL3741_GLOBAL_CURRENT 0xFF
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#endif
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const uint8_t i2c_addresses[IS31FL3741_DRIVER_COUNT] = {
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IS31FL3741_I2C_ADDRESS_1,
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#ifdef IS31FL3741_I2C_ADDRESS_2
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IS31FL3741_I2C_ADDRESS_2,
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# ifdef IS31FL3741_I2C_ADDRESS_3
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IS31FL3741_I2C_ADDRESS_3,
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# ifdef IS31FL3741_I2C_ADDRESS_4
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IS31FL3741_I2C_ADDRESS_4,
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# endif
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# endif
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#endif
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};
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// These buffers match the IS31FL3741 and IS31FL3741A PWM registers.
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// The scaling buffers match the page 2 and 3 LED On/Off registers.
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// Storing them like this is optimal for I2C transfers to the registers.
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// We could optimize this and take out the unused registers from these
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// buffers and the transfers in is31fl3741_write_pwm_buffer() but it's
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// probably not worth the extra complexity.
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typedef struct is31fl3741_driver_t {
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uint8_t pwm_buffer_0[IS31FL3741_PWM_0_REGISTER_COUNT];
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uint8_t pwm_buffer_1[IS31FL3741_PWM_1_REGISTER_COUNT];
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bool pwm_buffer_dirty;
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uint8_t scaling_buffer_0[IS31FL3741_SCALING_0_REGISTER_COUNT];
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uint8_t scaling_buffer_1[IS31FL3741_SCALING_1_REGISTER_COUNT];
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bool scaling_buffer_dirty;
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} PACKED is31fl3741_driver_t;
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is31fl3741_driver_t driver_buffers[IS31FL3741_DRIVER_COUNT] = {{
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.pwm_buffer_0 = {0},
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.pwm_buffer_1 = {0},
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.pwm_buffer_dirty = false,
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.scaling_buffer_0 = {0},
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.scaling_buffer_1 = {0},
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.scaling_buffer_dirty = false,
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}};
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void is31fl3741_write_register(uint8_t index, uint8_t reg, uint8_t data) {
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#if IS31FL3741_I2C_PERSISTENCE > 0
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for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) {
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if (i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
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}
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#else
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i2c_write_register(i2c_addresses[index] << 1, reg, &data, 1, IS31FL3741_I2C_TIMEOUT);
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#endif
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}
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void is31fl3741_select_page(uint8_t index, uint8_t page) {
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is31fl3741_write_register(index, IS31FL3741_REG_COMMAND_WRITE_LOCK, IS31FL3741_COMMAND_WRITE_LOCK_MAGIC);
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is31fl3741_write_register(index, IS31FL3741_REG_COMMAND, page);
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}
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void is31fl3741_write_pwm_buffer(uint8_t index) {
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is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_0);
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// Transmit PWM0 registers in 6 transfers of 30 bytes.
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// Iterate over the pwm_buffer_0 contents at 30 byte intervals.
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for (uint8_t i = 0; i < IS31FL3741_PWM_0_REGISTER_COUNT; i += 30) {
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#if IS31FL3741_I2C_PERSISTENCE > 0
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for (uint8_t j = 0; j < IS31FL3741_I2C_PERSISTENCE; j++) {
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if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
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}
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#else
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i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_0 + i, 30, IS31FL3741_I2C_TIMEOUT);
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#endif
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}
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is31fl3741_select_page(index, IS31FL3741_COMMAND_PWM_1);
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// Transmit PWM1 registers in 9 transfers of 19 bytes.
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// Iterate over the pwm_buffer_1 contents at 19 byte intervals.
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for (uint8_t i = 0; i < IS31FL3741_PWM_1_REGISTER_COUNT; i += 19) {
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#if IS31FL3741_I2C_PERSISTENCE > 0
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for (uint8_t i = 0; i < IS31FL3741_I2C_PERSISTENCE; i++) {
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if (i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) break;
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}
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#else
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i2c_write_register(i2c_addresses[index] << 1, i, driver_buffers[index].pwm_buffer_1 + i, 19, IS31FL3741_I2C_TIMEOUT);
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#endif
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}
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}
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void is31fl3741_init_drivers(void) {
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i2c_init();
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#if defined(IS31FL3741_SDB_PIN)
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gpio_set_pin_output(IS31FL3741_SDB_PIN);
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gpio_write_pin_high(IS31FL3741_SDB_PIN);
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#endif
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for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
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is31fl3741_init(i);
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}
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for (int i = 0; i < IS31FL3741_LED_COUNT; i++) {
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is31fl3741_set_led_control_register(i, true);
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}
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for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
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is31fl3741_update_led_control_registers(i);
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}
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}
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void is31fl3741_init(uint8_t index) {
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// In order to avoid the LEDs being driven with garbage data
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// in the LED driver's PWM registers, shutdown is enabled last.
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// Set up the mode and other settings, clear the PWM registers,
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// then disable software shutdown.
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// Unlock the command register.
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is31fl3741_select_page(index, IS31FL3741_COMMAND_FUNCTION);
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// Set to Normal operation
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is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_CONFIGURATION, IS31FL3741_CONFIGURATION);
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// Set Golbal Current Control Register
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is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_GLOBAL_CURRENT, IS31FL3741_GLOBAL_CURRENT);
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// Set Pull up & Down for SWx CSy
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is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PULLDOWNUP, ((IS31FL3741_CS_PULLDOWN << 4) | IS31FL3741_SW_PULLUP));
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// Set PWM frequency
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is31fl3741_write_register(index, IS31FL3741_FUNCTION_REG_PWM_FREQUENCY, (IS31FL3741_PWM_FREQUENCY & 0b1111));
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// is31fl3741_update_led_scaling_registers(index, 0xFF, 0xFF, 0xFF);
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// Wait 10ms to ensure the device has woken up.
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wait_ms(10);
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}
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uint8_t get_pwm_value(uint8_t driver, uint16_t reg) {
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if (reg & 0x100) {
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return driver_buffers[driver].pwm_buffer_1[reg & 0xFF];
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} else {
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return driver_buffers[driver].pwm_buffer_0[reg];
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}
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}
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void set_pwm_value(uint8_t driver, uint16_t reg, uint8_t value) {
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if (reg & 0x100) {
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driver_buffers[driver].pwm_buffer_1[reg & 0xFF] = value;
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} else {
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driver_buffers[driver].pwm_buffer_0[reg] = value;
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}
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}
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void is31fl3741_set_value(int index, uint8_t value) {
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is31fl3741_led_t led;
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if (index >= 0 && index < IS31FL3741_LED_COUNT) {
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memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led));
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if (get_pwm_value(led.driver, led.v) == value) {
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return;
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}
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set_pwm_value(led.driver, led.v, value);
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driver_buffers[led.driver].pwm_buffer_dirty = true;
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}
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}
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void is31fl3741_set_value_all(uint8_t value) {
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for (int i = 0; i < IS31FL3741_LED_COUNT; i++) {
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is31fl3741_set_value(i, value);
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}
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}
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void set_scaling_value(uint8_t driver, uint16_t reg, uint8_t value) {
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if (reg & 0x100) {
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driver_buffers[driver].scaling_buffer_1[reg & 0xFF] = value;
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} else {
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driver_buffers[driver].scaling_buffer_0[reg] = value;
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}
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}
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void is31fl3741_set_led_control_register(uint8_t index, bool value) {
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is31fl3741_led_t led;
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memcpy_P(&led, (&g_is31fl3741_leds[index]), sizeof(led));
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set_scaling_value(led.driver, led.v, value ? 0xFF : 0x00);
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driver_buffers[led.driver].scaling_buffer_dirty = true;
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}
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void is31fl3741_update_pwm_buffers(uint8_t index) {
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if (driver_buffers[index].pwm_buffer_dirty) {
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is31fl3741_write_pwm_buffer(index);
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driver_buffers[index].pwm_buffer_dirty = false;
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}
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}
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void is31fl3741_set_pwm_buffer(const is31fl3741_led_t *pled, uint8_t value) {
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set_pwm_value(pled->driver, pled->v, value);
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driver_buffers[pled->driver].pwm_buffer_dirty = true;
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}
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void is31fl3741_update_led_control_registers(uint8_t index) {
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if (driver_buffers[index].scaling_buffer_dirty) {
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is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_0);
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for (uint8_t i = 0; i < IS31FL3741_SCALING_0_REGISTER_COUNT; i++) {
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is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_0[i]);
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}
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is31fl3741_select_page(index, IS31FL3741_COMMAND_SCALING_1);
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for (uint8_t i = 0; i < IS31FL3741_SCALING_1_REGISTER_COUNT; i++) {
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is31fl3741_write_register(index, i, driver_buffers[index].scaling_buffer_1[i]);
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}
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driver_buffers[index].scaling_buffer_dirty = false;
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}
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}
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void is31fl3741_set_scaling_registers(const is31fl3741_led_t *pled, uint8_t value) {
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set_scaling_value(pled->driver, pled->v, value);
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driver_buffers[pled->driver].scaling_buffer_dirty = true;
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}
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void is31fl3741_flush(void) {
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for (uint8_t i = 0; i < IS31FL3741_DRIVER_COUNT; i++) {
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is31fl3741_update_pwm_buffers(i);
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}
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}
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