diff options
Diffstat (limited to 'drivers/issi/is31fl3218.c')
| -rw-r--r-- | drivers/issi/is31fl3218.c | 100 |
1 files changed, 47 insertions, 53 deletions
diff --git a/drivers/issi/is31fl3218.c b/drivers/issi/is31fl3218.c index db44f72564..d43863ac4b 100644 --- a/drivers/issi/is31fl3218.c +++ b/drivers/issi/is31fl3218.c @@ -35,68 +35,62 @@ 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; +bool g_pwm_buffer_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); +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); } -void IS31FL3218_write_pwm_buffer( uint8_t *pwm_buffer ) -{ - g_twi_transfer_buffer[0] = ISSI_REG_PWM; - for ( int i=0; i<18; i++ ) { - g_twi_transfer_buffer[1+i] = pwm_buffer[i]; - } - - i2c_transmit( ISSI_ADDRESS, g_twi_transfer_buffer, 19, ISSI_TIMEOUT); +void IS31FL3218_write_pwm_buffer(uint8_t *pwm_buffer) { + g_twi_transfer_buffer[0] = ISSI_REG_PWM; + for (int i = 0; i < 18; i++) { + g_twi_transfer_buffer[1 + i] = pwm_buffer[i]; + } + + i2c_transmit(ISSI_ADDRESS, g_twi_transfer_buffer, 19, ISSI_TIMEOUT); } -void IS31FL3218_init(void) -{ - // In case we ever want to reinitialize (?) - IS31FL3218_write_register( ISSI_REG_RESET, 0x00 ); - - // Turn off software shutdown - IS31FL3218_write_register( ISSI_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 ); - } - - // Enable all channels - for ( uint8_t i = 0; i < 3; i++ ) { - IS31FL3218_write_register( ISSI_REG_CONTROL+i, 0b00111111 ); - } - - // Load PWM registers and LED Control register data - IS31FL3218_write_register( ISSI_REG_UPDATE, 0x01 ); +void IS31FL3218_init(void) { + // In case we ever want to reinitialize (?) + IS31FL3218_write_register(ISSI_REG_RESET, 0x00); + + // Turn off software shutdown + IS31FL3218_write_register(ISSI_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); + } + + // Enable all channels + for (uint8_t i = 0; i < 3; i++) { + IS31FL3218_write_register(ISSI_REG_CONTROL + i, 0b00111111); + } + + // Load PWM registers and LED Control register data + IS31FL3218_write_register(ISSI_REG_UPDATE, 0x01); } -void IS31FL3218_set_color( int index, uint8_t red, uint8_t green, uint8_t blue ) -{ - 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; +void IS31FL3218_set_color(int index, uint8_t red, uint8_t green, uint8_t blue) { + 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; } -void IS31FL3218_set_color_all( uint8_t red, uint8_t green, uint8_t blue ) -{ - for ( int i = 0; i < 6; i++ ) { - IS31FL3218_set_color( i, red, green, blue ); - } +void IS31FL3218_set_color_all(uint8_t red, uint8_t green, uint8_t blue) { + for (int i = 0; i < 6; i++) { + IS31FL3218_set_color(i, red, green, blue); + } } -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 ); - } - g_pwm_buffer_update_required = false; +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); + } + g_pwm_buffer_update_required = false; } |