/* 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 "is31flcommon.h"
#include "i2c_master.h"
#include "wait.h"
#include <string.h>
// Set defaults for Timeout and Persistence
#ifndef ISSI_TIMEOUT
# define ISSI_TIMEOUT 100
#endif
#ifndef ISSI_PERSISTENCE
# define ISSI_PERSISTENCE 0
#endif
// Transfer buffer for TWITransmitData()
uint8_t g_twi_transfer_buffer[20];
// These buffers match the PWM & scaling registers.
// Storing them like this is optimal for I2C transfers to the registers.
uint8_t g_pwm_buffer[DRIVER_COUNT][ISSI_MAX_LEDS];
bool g_pwm_buffer_update_required[DRIVER_COUNT] = {false};
uint8_t g_scaling_buffer[DRIVER_COUNT][ISSI_SCALING_SIZE];
bool g_scaling_buffer_update_required[DRIVER_COUNT] = {false};
// For writing of single register entry
void IS31FL_write_single_register(uint8_t addr, uint8_t reg, uint8_t data) {
// Set register address and register data ready to write
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
}
// For writing of mulitple register entries to make use of address auto increment
// Once the controller has been called and we have written the first bit of data
// the controller will move to the next register meaning we can write sequential blocks.
bool IS31FL_write_multi_registers(uint8_t addr, uint8_t *source_buffer, uint8_t buffer_size, uint8_t transfer_size, uint8_t start_reg_addr) {
// Split the buffer into chunks to transfer
for (int i = 0; i < buffer_size; i += transfer_size) {
// Set the first entry of transfer buffer to the first register we want to write
g_twi_transfer_buffer[0] = i + start_reg_addr;
// Copy the section of our source buffer into the transfer buffer after first register address
memcpy(g_twi_transfer_buffer + 1, source_buffer + i, transfer_size);
#if ISSI_PERSISTENCE > 0
for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) {
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, transfer_size + 1, ISSI_TIMEOUT) != 0) {
return false;
}
}
#else
if (i2c_transmit(addr << 1, g_twi_transfer_buffer, transfer_size + 1, ISSI_TIMEOUT) != 0) {
return false;
}
#endif
}
return true;
}
void IS31FL_unlock_register(uint8_t addr, uint8_t page) {
// unlock the command register and select Page to write
IS31FL_write_single_register(addr, ISSI_COMMANDREGISTER_WRITELOCK, ISSI_REGISTER_UNLOCK);
IS31FL_write_single_register(addr, ISSI_COMMANDREGISTER, page);
}
void IS31FL_common_init(uint8_t addr, uint8_t ssr) {
// Setup phase, need to take out of software shutdown and configure
// ISSI_SSR_x is passed to allow Master / Slave setting where applicable
// Unlock the command register & select Function Register
IS31FL_unlock_register(addr, ISSI_PAGE_FUNCTION);
// Set Configuration Register to remove Software shutdown
IS31FL_write_single_register(addr, ISSI_REG_CONFIGURATION, ISSI_CONFIGURATION);
// Set Golbal Current Control Register
IS31FL_write_single_register(addr, ISSI_REG_GLOBALCURRENT, ISSI_GLOBALCURRENT);
// Set Pull up & Down for SWx CSy
IS31FL_write_single_register(addr, ISSI_REG_PULLDOWNUP, ISSI_PULLDOWNUP);
// Set Tempature Status
#ifdef ISSI_REG_TEMP
IS31FL_write_single_register(addr, ISSI_REG_TEMP, ISSI_TEMP);
#endif
// Set Spread Spectrum Register, passed through as sets SYNC function
IS31FL_write_single_register(addr, ISSI_REG_SSR, ssr);
// Set PWM Frequency Enable Register if applicable
#ifdef ISSI_REG_PWM_ENABLE
IS31FL_write_single_register(addr, ISSI_REG_PWM_ENABLE, ISSI_PWM_ENABLE);
#endif
// Set PWM Frequency Register if applicable
#ifdef ISSI_REG_PWM_SET
IS31FL_write_single_register(addr, ISSI_REG_PWM_SET, ISSI_PWM_SET);
#endif
// Wait 10ms to ensure the device has woken up.
wait_ms(10);
}
void IS31FL_common_update_pwm_register(uint8_t addr, uint8_t index) {
if (g_pwm_buffer_update_required[index]) {
// Queue up the correct page
IS31FL_unlock_register(addr, ISSI_PAGE_PWM);
// Hand off the update to IS31FL_write_multi_registers
IS31FL_write_multi_registers(addr, g_pwm_buffer[index], ISSI_MAX_LEDS, ISSI_PWM_TRF_SIZE, ISSI_PWM_REG_1ST);
// Update flags that pwm_buffer has been updated
g_pwm_buffer_update_required[index] = false;
}
}
#ifdef ISSI_MANUAL_SCALING
void IS31FL_set_manual_scaling_buffer(void) {
for (int i = 0; i < ISSI_MANUAL_SCALING; i++) {
is31_led scale = g_is31_scaling[i];
if (scale.driver >= 0 && scale.driver < DRIVER_LED_TOTAL) {
is31_led led = g_is31_leds[scale.driver];
# ifdef RGB_MATRIX_ENABLE
g_scaling_buffer[led.driver][led.r] = scale.r;
g_scaling_buffer[led.driver][led.g] = scale.g;
g_scaling_buffer[led.driver][led.b] = scale.b;
# elif defined(LED_MATRIX_ENABLE)
g_scaling_buffer[led.driver][led.v] = scale.v;
# endif
g_scaling_buffer_update_required[led.driver] = true;
}
}
}
#endif
void IS31FL_common_update_scaling_register(uint8_t addr, uint8_t index) {
if (g_scaling_buffer_update_required[index]) {
// Queue up the correct page
IS31FL_unlock_register(addr, ISSI_PAGE_SCALING);
// Hand off the update to IS31FL_write_multi_registers
IS31FL_write_multi_registers(addr, g_scaling_buffer[index], ISSI_SCALING_SIZE, ISSI_SCALING_TRF_SIZE, ISSI_SCL_REG_1ST);
// Update flags that scaling_buffer has been updated
g_scaling_buffer_update_required[index] = false;
}
}
#ifdef RGB_MATRIX_ENABLE
// Colour is set by adjusting PWM register
void IS31FL_RGB_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
if (index >= 0 && index < DRIVER_LED_TOTAL) {
is31_led led = g_is31_leds[index];
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 IS31FL_RGB_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
IS31FL_RGB_set_color(i, red, green, blue);
}
}
// Setup Scaling register that decides the peak current of each LED
void IS31FL_RGB_set_scaling_buffer(uint8_t index, bool red, bool green, bool blue) {
is31_led led = g_is31_leds[index];
if (red) {
g_scaling_buffer[led.driver][led.r] = ISSI_SCAL_RED;
} else {
g_scaling_buffer[led.driver][led.r] = ISSI_SCAL_RED_OFF;
}
if (green) {
g_scaling_buffer[led.driver][led.g] = ISSI_SCAL_GREEN;
} else {
g_scaling_buffer[led.driver][led.g] = ISSI_SCAL_GREEN_OFF;
}
if (blue) {
g_scaling_buffer[led.driver][led.b] = ISSI_SCAL_BLUE;
} else {
g_scaling_buffer[led.driver][led.b] = ISSI_SCAL_BLUE_OFF;
}
g_scaling_buffer_update_required[led.driver] = true;
}
#elif defined(LED_MATRIX_ENABLE)
// LED Matrix Specific scripts
void IS31FL_simple_set_scaling_buffer(uint8_t index, bool value) {
is31_led led = g_is31_leds[index];
if (value) {
g_scaling_buffer[led.driver][led.v] = ISSI_SCAL_LED;
} else {
g_scaling_buffer[led.driver][led.v] = ISSI_SCAL_LED_OFF;
}
g_scaling_buffer_update_required[led.driver] = true;
}
void IS31FL_simple_set_brightness(int index, uint8_t value) {
if (index >= 0 && index < DRIVER_LED_TOTAL) {
is31_led led = g_is31_leds[index];
g_pwm_buffer[led.driver][led.v] = value;
g_pwm_buffer_update_required[led.driver] = true;
}
}
void IS31FL_simple_set_brigntness_all(uint8_t value) {
for (int i = 0; i < DRIVER_LED_TOTAL; i++) {
IS31FL_simple_set_brightness(i, value);
}
}
#endif