- /* 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 "wait.h"
-
- #include "is31fl3741.h"
- #include <string.h>
- #include "i2c_master.h"
- #include "progmem.h"
-
- // This is a 7-bit address, that gets left-shifted and bit 0
- // set to 0 for write, 1 for read (as per I2C protocol)
- // The address will vary depending on your wiring:
- // 00 <-> GND
- // 01 <-> SCL
- // 10 <-> SDA
- // 11 <-> VCC
- // ADDR1 represents A1:A0 of the 7-bit address.
- // ADDR2 represents A3:A2 of the 7-bit address.
- // The result is: 0b101(ADDR2)(ADDR1)
- #define ISSI_ADDR_DEFAULT 0x60
-
- #define ISSI_COMMANDREGISTER 0xFD
- #define ISSI_COMMANDREGISTER_WRITELOCK 0xFE
- #define ISSI_INTERRUPTMASKREGISTER 0xF0
- #define ISSI_INTERRUPTSTATUSREGISTER 0xF1
- #define ISSI_IDREGISTER 0xFC
-
- #define ISSI_PAGE_PWM0 0x00 // PG0
- #define ISSI_PAGE_PWM1 0x01 // PG1
- #define ISSI_PAGE_SCALING_0 0x02 // PG2
- #define ISSI_PAGE_SCALING_1 0x03 // PG3
- #define ISSI_PAGE_FUNCTION 0x04 // PG4
-
- #define ISSI_REG_CONFIGURATION 0x00 // PG4
- #define ISSI_REG_GLOBALCURRENT 0x01 // PG4
- #define ISSI_REG_PULLDOWNUP 0x02 // PG4
- #define ISSI_REG_RESET 0x3F // PG4
-
- #ifndef ISSI_TIMEOUT
- # define ISSI_TIMEOUT 100
- #endif
-
- #ifndef ISSI_PERSISTENCE
- # define ISSI_PERSISTENCE 0
- #endif
-
- #ifndef ISSI_SWPULLUP
- # define ISSI_SWPULLUP PUR_32KR
- #endif
-
- #ifndef ISSI_CSPULLUP
- # define ISSI_CSPULLUP PUR_32KR
- #endif
-
- #define ISSI_MAX_LEDS 351
-
- // Transfer buffer for TWITransmitData()
- uint8_t g_twi_transfer_buffer[20] = {0xFF};
-
- // These buffers match the IS31FL3741 and IS31FL3741A PWM registers.
- // The scaling buffers match the PG2 and PG3 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.
- uint8_t g_pwm_buffer[DRIVER_COUNT][ISSI_MAX_LEDS];
- bool g_pwm_buffer_update_required[DRIVER_COUNT] = {false};
- bool g_scaling_registers_update_required[DRIVER_COUNT] = {false};
-
- uint8_t g_scaling_registers[DRIVER_COUNT][ISSI_MAX_LEDS];
-
- void IS31FL3741_write_register(uint8_t addr, uint8_t reg, uint8_t data) {
- g_twi_transfer_buffer[0] = reg;
- g_twi_transfer_buffer[1] = data;
-
- #if ISSI_PERSISTENCE > 0
- for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT) == 0) break;
- }
- #else
- i2c_transmit(addr << 1, g_twi_transfer_buffer, 2, ISSI_TIMEOUT);
- #endif
- }
-
- bool IS31FL3741_write_pwm_buffer(uint8_t addr, uint8_t *pwm_buffer) {
- // unlock the command register and select PG2
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM0);
-
- for (int i = 0; i < 342; i += 18) {
- if (i == 180) {
- // unlock the command register and select PG2
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_PWM1);
- }
-
- g_twi_transfer_buffer[0] = i % 180;
- memcpy(g_twi_transfer_buffer + 1, pwm_buffer + i, 18);
-
- #if ISSI_PERSISTENCE > 0
- for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 19, ISSI_TIMEOUT) != 0) {
- return false;
- }
- }
- #else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 19, ISSI_TIMEOUT) != 0) {
- return false;
- }
- #endif
- }
-
- // transfer the left cause the total number is 351
- g_twi_transfer_buffer[0] = 162;
- memcpy(g_twi_transfer_buffer + 1, pwm_buffer + 342, 9);
-
- #if ISSI_PERSISTENCE > 0
- for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 10, ISSI_TIMEOUT) != 0) {
- return false;
- }
- }
- #else
- if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 10, ISSI_TIMEOUT) != 0) {
- return false;
- }
- #endif
-
- return true;
- }
-
- void IS31FL3741_init(uint8_t addr) {
- // 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.
-
- // Unlock the command register.
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
-
- // Select PG4
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_FUNCTION);
-
- // Set to Normal operation
- IS31FL3741_write_register(addr, ISSI_REG_CONFIGURATION, 0x01);
-
- // Set Golbal Current Control Register
- IS31FL3741_write_register(addr, ISSI_REG_GLOBALCURRENT, 0xFF);
- // Set Pull up & Down for SWx CSy
- IS31FL3741_write_register(addr, ISSI_REG_PULLDOWNUP, ((ISSI_CSPULLUP << 4) | ISSI_SWPULLUP));
-
- // IS31FL3741_update_led_scaling_registers(addr, 0xFF, 0xFF, 0xFF);
-
- // Wait 10ms to ensure the device has woken up.
- wait_ms(10);
- }
-
- void IS31FL3741_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
- is31_led led;
- if (index >= 0 && index < DRIVER_LED_TOTAL) {
- memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
-
- g_pwm_buffer[led.driver][led.r] = red;
- g_pwm_buffer[led.driver][led.g] = green;
- g_pwm_buffer[led.driver][led.b] = blue;
- g_pwm_buffer_update_required[led.driver] = true;
- }
- }
-
- void IS31FL3741_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
- for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
- IS31FL3741_set_color(i, red, green, blue);
- }
- }
-
- void IS31FL3741_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
- is31_led led;
- memcpy_P(&led, (&g_is31_leds[index]), sizeof(led));
-
- if (red) {
- g_scaling_registers[led.driver][led.r] = 0xFF;
- } else {
- g_scaling_registers[led.driver][led.r] = 0x00;
- }
-
- if (green) {
- g_scaling_registers[led.driver][led.g] = 0xFF;
- } else {
- g_scaling_registers[led.driver][led.g] = 0x00;
- }
-
- if (blue) {
- g_scaling_registers[led.driver][led.b] = 0xFF;
- } else {
- g_scaling_registers[led.driver][led.b] = 0x00;
- }
-
- g_scaling_registers_update_required[led.driver] = true;
- }
-
- void IS31FL3741_update_pwm_buffers(uint8_t addr, uint8_t index) {
- if (g_pwm_buffer_update_required[index]) {
- IS31FL3741_write_pwm_buffer(addr, g_pwm_buffer[index]);
- }
-
- g_pwm_buffer_update_required[index] = false;
- }
-
- void IS31FL3741_set_pwm_buffer(const is31_led *pled, uint8_t red, uint8_t green, uint8_t blue) {
- g_pwm_buffer[pled->driver][pled->r] = red;
- g_pwm_buffer[pled->driver][pled->g] = green;
- g_pwm_buffer[pled->driver][pled->b] = blue;
-
- g_pwm_buffer_update_required[pled->driver] = true;
- }
-
- void IS31FL3741_update_led_control_registers(uint8_t addr, uint8_t index) {
- if (g_scaling_registers_update_required[index]) {
- // unlock the command register and select PG2
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_SCALING_0);
-
- // CS1_SW1 to CS30_SW6 are on PG2
- for (int i = CS1_SW1; i <= CS30_SW6; ++i) {
- IS31FL3741_write_register(addr, i, g_scaling_registers[0][i]);
- }
-
- // unlock the command register and select PG3
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, 0xC5);
- IS31FL3741_write_register(addr, ISSI_COMMANDREGISTER, ISSI_PAGE_SCALING_1);
-
- // CS1_SW7 to CS39_SW9 are on PG3
- for (int i = CS1_SW7; i <= CS39_SW9; ++i) {
- IS31FL3741_write_register(addr, i - CS1_SW7, g_scaling_registers[0][i]);
- }
-
- g_scaling_registers_update_required[index] = false;
- }
- }
-
- void IS31FL3741_set_scaling_registers(const is31_led *pled, uint8_t red, uint8_t green, uint8_t blue) {
- g_scaling_registers[pled->driver][pled->r] = red;
- g_scaling_registers[pled->driver][pled->g] = green;
- g_scaling_registers[pled->driver][pled->b] = blue;
-
- g_scaling_registers_update_required[pled->driver] = true;
- }
|