diff options
Diffstat (limited to 'drivers/led/issi/is31fl3218.c')
| -rw-r--r-- | drivers/led/issi/is31fl3218.c | 118 |
1 files changed, 90 insertions, 28 deletions
diff --git a/drivers/led/issi/is31fl3218.c b/drivers/led/issi/is31fl3218.c index 970e9a0be9..87a0acfc08 100644 --- a/drivers/led/issi/is31fl3218.c +++ b/drivers/led/issi/is31fl3218.c @@ -14,84 +14,146 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "is31fl3218.h" +#include <string.h> #include "i2c_master.h" -// This is the full 8-bit address -#define ISSI_ADDRESS 0b10101000 - // These are the register addresses -#define ISSI_REG_SHUTDOWN 0x00 -#define ISSI_REG_PWM 0x01 -#define ISSI_REG_CONTROL 0x13 -#define ISSI_REG_UPDATE 0x16 -#define ISSI_REG_RESET 0x17 +#define IS31FL3218_REG_SHUTDOWN 0x00 +#define IS31FL3218_REG_PWM 0x01 +#define IS31FL3218_REG_CONTROL 0x13 +#define IS31FL3218_REG_UPDATE 0x16 +#define IS31FL3218_REG_RESET 0x17 + +#ifndef IS31FL3218_I2C_TIMEOUT +# define IS31FL3218_I2C_TIMEOUT 100 +#endif -// Default timeout if no I2C response -#define ISSI_TIMEOUT 100 +#ifndef IS31FL3218_I2C_PERSISTENCE +# define IS31FL3218_I2C_PERSISTENCE 0 +#endif // Reusable buffer for transfers uint8_t g_twi_transfer_buffer[20]; // IS31FL3218 has 18 PWM outputs and a fixed I2C address, so no chaining. -// If used as RGB LED driver, LEDs are assigned RGB,RGB,RGB,RGB,RGB,RGB uint8_t g_pwm_buffer[18]; bool g_pwm_buffer_update_required = false; +uint8_t g_led_control_registers[3] = {0}; +bool g_led_control_registers_update_required = false; + void is31fl3218_write_register(uint8_t reg, uint8_t data) { g_twi_transfer_buffer[0] = reg; g_twi_transfer_buffer[1] = data; - i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 2, ISSI_TIMEOUT); +#if IS31FL3218_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) { + if (i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT) == 0) break; + } +#else + i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 2, IS31FL3218_I2C_TIMEOUT); +#endif } void is31fl3218_write_pwm_buffer(uint8_t *pwm_buffer) { - g_twi_transfer_buffer[0] = ISSI_REG_PWM; + g_twi_transfer_buffer[0] = IS31FL3218_REG_PWM; memcpy(g_twi_transfer_buffer + 1, pwm_buffer, 18); - i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 19, ISSI_TIMEOUT); +#if IS31FL3218_I2C_PERSISTENCE > 0 + for (uint8_t i = 0; i < IS31FL3218_I2C_PERSISTENCE; i++) { + i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT); + } +#else + i2c_transmit(IS31FL3218_I2C_ADDRESS << 1, g_twi_transfer_buffer, 19, IS31FL3218_I2C_TIMEOUT); +#endif } void is31fl3218_init(void) { // In case we ever want to reinitialize (?) - is31fl3218_write_register(ISSI_REG_RESET, 0x00); + is31fl3218_write_register(IS31FL3218_REG_RESET, 0x00); // Turn off software shutdown - is31fl3218_write_register(ISSI_REG_SHUTDOWN, 0x01); + is31fl3218_write_register(IS31FL3218_REG_SHUTDOWN, 0x01); // Set all PWM values to zero for (uint8_t i = 0; i < 18; i++) { - is31fl3218_write_register(ISSI_REG_PWM + i, 0x00); + is31fl3218_write_register(IS31FL3218_REG_PWM + i, 0x00); } - // Enable all channels + // turn off all LEDs in the LED control register for (uint8_t i = 0; i < 3; i++) { - is31fl3218_write_register(ISSI_REG_CONTROL + i, 0b00111111); + is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, 0x00); } // Load PWM registers and LED Control register data - is31fl3218_write_register(ISSI_REG_UPDATE, 0x01); + is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01); } void is31fl3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { - if (g_pwm_buffer[index * 3 + 0] == red && g_pwm_buffer[index * 3 + 1] == green && g_pwm_buffer[index * 3 + 2] == blue) { + is31fl3218_led_t led; + if (index >= 0 && index < RGB_MATRIX_LED_COUNT) { + memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led)); + } + 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) { return; } - g_pwm_buffer[index * 3 + 0] = red; - g_pwm_buffer[index * 3 + 1] = green; - g_pwm_buffer[index * 3 + 2] = blue; - g_pwm_buffer_update_required = true; + 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; + g_pwm_buffer_update_required = true; } void is31fl3218_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { - for (int i = 0; i < 6; i++) { + for (int i = 0; i < RGB_MATRIX_LED_COUNT; i++) { is31fl3218_set_color(i, red, green, blue); } } +void is31fl3218_set_led_control_register(uint8_t index, bool red, bool green, bool blue) { + is31fl3218_led_t led; + memcpy_P(&led, (&g_is31fl3218_leds[index]), sizeof(led)); + + uint8_t control_register_r = (led.r - IS31FL3218_REG_PWM) / 6; + uint8_t control_register_g = (led.g - IS31FL3218_REG_PWM) / 6; + uint8_t control_register_b = (led.b - IS31FL3218_REG_PWM) / 6; + uint8_t bit_r = (led.r - IS31FL3218_REG_PWM) % 6; + uint8_t bit_g = (led.g - IS31FL3218_REG_PWM) % 6; + uint8_t bit_b = (led.b - IS31FL3218_REG_PWM) % 6; + + if (red) { + g_led_control_registers[control_register_r] |= (1 << bit_r); + } else { + g_led_control_registers[control_register_r] &= ~(1 << bit_r); + } + if (green) { + g_led_control_registers[control_register_g] |= (1 << bit_g); + } else { + g_led_control_registers[control_register_g] &= ~(1 << bit_g); + } + if (blue) { + g_led_control_registers[control_register_b] |= (1 << bit_b); + } else { + g_led_control_registers[control_register_b] &= ~(1 << bit_b); + } + + g_led_control_registers_update_required = true; +} + void is31fl3218_update_pwm_buffers(void) { if (g_pwm_buffer_update_required) { is31fl3218_write_pwm_buffer(g_pwm_buffer); // Load PWM registers and LED Control register data - is31fl3218_write_register(ISSI_REG_UPDATE, 0x01); + is31fl3218_write_register(IS31FL3218_REG_UPDATE, 0x01); + + g_pwm_buffer_update_required = false; + } +} + +void is31fl3218_update_led_control_registers(void) { + if (g_led_control_registers_update_required) { + for (int i = 0; i < 3; i++) { + is31fl3218_write_register(IS31FL3218_REG_CONTROL + i, g_led_control_registers[i]); + } + + g_led_control_registers_update_required = false; } - g_pwm_buffer_update_required = false; } |