Complete RGB Matrix support for IS31FL3218 (#22004)
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Ryan
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9 changed files with 178 additions and 33 deletions
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@ -14,11 +14,9 @@
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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 "is31fl3218.h"
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#include <string.h>
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#include "i2c_master.h"
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// This is the full 8-bit address
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#define IS31FL3218_I2C_ADDRESS 0xA8
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// These are the register addresses
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#define IS31FL3218_REG_SHUTDOWN 0x00
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#define IS31FL3218_REG_PWM 0x01
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@ -26,28 +24,47 @@
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#define IS31FL3218_REG_UPDATE 0x16
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#define IS31FL3218_REG_RESET 0x17
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// Default timeout if no I2C response
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#define IS31FL3218_I2C_TIMEOUT 100
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#ifndef IS31FL3218_I2C_TIMEOUT
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# define IS31FL3218_I2C_TIMEOUT 100
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#endif
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#ifndef IS31FL3218_I2C_PERSISTENCE
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# define IS31FL3218_I2C_PERSISTENCE 0
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#endif
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// Reusable buffer for transfers
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uint8_t g_twi_transfer_buffer[20];
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// IS31FL3218 has 18 PWM outputs and a fixed I2C address, so no chaining.
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// If used as RGB LED driver, LEDs are assigned RGB,RGB,RGB,RGB,RGB,RGB
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uint8_t g_pwm_buffer[18];
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bool g_pwm_buffer_update_required = false;
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uint8_t g_led_control_registers[3] = {0};
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bool g_led_control_registers_update_required = false;
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void is31fl3218_write_register(uint8_t reg, uint8_t data) {
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g_twi_transfer_buffer[0] = reg;
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g_twi_transfer_buffer[1] = data;
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i2c_transmit(IS31FL3218_I2C_ADDRESS, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT);
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#if IS31FL3218_I2C_PERSISTENCE > 0
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for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) {
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if (i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT) == 0) break;
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}
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#else
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i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT);
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#endif
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}
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void is31fl3218_write_pwm_buffer(uint8_t *pwm_buffer) {
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g_twi_transfer_buffer[0] = IS31FL3218_REG_PWM;
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memcpy(g_twi_transfer_buffer + 1, pwm_buffer, 18);
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i2c_transmit(IS31FL3218_I2C_ADDRESS, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT);
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#if IS31FL3218_I2C_PERSISTENCE > 0
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for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) {
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i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT);
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}
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#else
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i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT);
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#endif
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}
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void is31fl3218_init(void) {
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@ -62,9 +79,9 @@ void is31fl3218_init(void) {
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is31fl3218_write_register(IS31FL3218_REG_PWM + i, 0x00);
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}
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// Enable all channels
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// turn off all LEDs in the LED control register
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for (uint8_t i = 0; i < 3; i++) {
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is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, 0b00111111);
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is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, 0x00);
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}
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// Load PWM registers and LED Control register data
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@ -72,26 +89,71 @@ void is31fl3218_init(void) {
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}
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void is31fl3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) {
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if (g_pwm_buffer[index * 3 + 0] == red && g_pwm_buffer[index * 3 + 1] == green && g_pwm_buffer[index * 3 + 2] == blue) {
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is31fl3218_led_t led;
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if (index >= 0 && index < RGB_MATRIX_LED_COUNT) {
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memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led));
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}
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if (g_pwm_buffer[led.r - IS31FL3218_REG_PWM] == red && g_pwm_buffer[led.g - IS31FL3218_REG_PWM] == green && g_pwm_buffer[led.b - IS31FL3218_REG_PWM] == blue) {
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return;
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}
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g_pwm_buffer[index * 3 + 0] = red;
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g_pwm_buffer[index * 3 + 1] = green;
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g_pwm_buffer[index * 3 + 2] = blue;
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g_pwm_buffer_update_required = true;
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g_pwm_buffer[led.r - IS31FL3218_REG_PWM] = red;
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g_pwm_buffer[led.g - IS31FL3218_REG_PWM] = green;
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g_pwm_buffer[led.b - IS31FL3218_REG_PWM] = blue;
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g_pwm_buffer_update_required = true;
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}
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void is31fl3218_set_color_all(uint8_t red, uint8_t green, uint8_t blue) {
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for (int i = 0; i < 6; i++) {
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for (int i = 0; i < RGB_MATRIX_LED_COUNT; i++) {
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is31fl3218_set_color(i, red, green, blue);
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}
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}
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void is31fl3218_set_led_control_register(uint8_t index, bool red, bool green, bool blue) {
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is31fl3218_led_t led;
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memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led));
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uint8_t control_register_r = (led.r - IS31FL3218_REG_PWM) / 6;
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uint8_t control_register_g = (led.g - IS31FL3218_REG_PWM) / 6;
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uint8_t control_register_b = (led.b - IS31FL3218_REG_PWM) / 6;
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uint8_t bit_r = (led.r - IS31FL3218_REG_PWM) % 6;
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uint8_t bit_g = (led.g - IS31FL3218_REG_PWM) % 6;
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uint8_t bit_b = (led.b - IS31FL3218_REG_PWM) % 6;
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if (red) {
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g_led_control_registers[control_register_r] |= (1 << bit_r);
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} else {
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g_led_control_registers[control_register_r] &= ~(1 << bit_r);
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}
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if (green) {
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g_led_control_registers[control_register_g] |= (1 << bit_g);
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} else {
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g_led_control_registers[control_register_g] &= ~(1 << bit_g);
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}
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if (blue) {
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g_led_control_registers[control_register_b] |= (1 << bit_b);
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} else {
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g_led_control_registers[control_register_b] &= ~(1 << bit_b);
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}
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g_led_control_registers_update_required = true;
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}
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void is31fl3218_update_pwm_buffers(void) {
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if (g_pwm_buffer_update_required) {
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is31fl3218_write_pwm_buffer(g_pwm_buffer);
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// Load PWM registers and LED Control register data
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is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01);
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g_pwm_buffer_update_required = false;
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}
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}
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void is31fl3218_update_led_control_registers(void) {
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if (g_led_control_registers_update_required) {
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for (int i = 0; i < 3; i++) {
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is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, g_led_control_registers[i]);
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}
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g_led_control_registers_update_required = false;
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}
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g_pwm_buffer_update_required = false;
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}
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@ -18,9 +18,45 @@
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "progmem.h"
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#define IS31FL3218_I2C_ADDRESS 0x54
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typedef struct is31fl3218_led_t {
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uint8_t r;
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uint8_t g;
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uint8_t b;
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} __attribute__((packed)) is31fl3218_led_t;
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extern const is31fl3218_led_t PROGMEM g_is31fl3218_leds[RGB_MATRIX_LED_COUNT];
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void is31fl3218_init(void);
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void is31fl3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue);
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void is31fl3218_set_color_all(uint8_t red, uint8_t green, uint8_t blue);
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void is31fl3218_set_led_control_register(uint8_t index, bool red, bool green, bool blue);
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void is31fl3218_update_pwm_buffers(void);
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void is31fl3218_update_led_control_registers(void);
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#define OUT1 0x01
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#define OUT2 0x02
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#define OUT3 0x03
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#define OUT4 0x04
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#define OUT5 0x05
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#define OUT6 0x06
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#define OUT7 0x07
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#define OUT8 0x08
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#define OUT9 0x09
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#define OUT10 0x0A
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#define OUT11 0x0B
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#define OUT12 0x0C
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#define OUT13 0x0D
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#define OUT14 0x0E
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#define OUT15 0x0F
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#define OUT16 0x10
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#define OUT17 0x11
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#define OUT18 0x12
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