diff options
Diffstat (limited to 'drivers/avr/is31fl3731.c')
| -rw-r--r-- | drivers/avr/is31fl3731.c | 87 |
1 files changed, 47 insertions, 40 deletions
diff --git a/drivers/avr/is31fl3731.c b/drivers/avr/is31fl3731.c index 158b77b7b1..70813464b2 100644 --- a/drivers/avr/is31fl3731.c +++ b/drivers/avr/is31fl3731.c @@ -49,6 +49,14 @@ #define ISSI_COMMANDREGISTER 0xFD #define ISSI_BANK_FUNCTIONREG 0x0B // helpfully called 'page nine' +#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]; @@ -78,100 +86,104 @@ bool g_led_control_registers_update_required = false; // 0x10 - R16,R15,R14,R13,R12,R11,R10,R09 -uint8_t IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data ) +void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data ) { g_twi_transfer_buffer[0] = reg; g_twi_transfer_buffer[1] = data; - //Transmit data until succesful - //while(i2c_transmit(addr << 1, g_twi_transfer_buffer,2) != 0); - return i2c_transmit(addr << 1, g_twi_transfer_buffer,2); + #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 } -uint8_t IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer ) +void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer ) { - uint8_t ret = 0; // assumes bank is already selected // transmit PWM registers in 9 transfers of 16 bytes // g_twi_transfer_buffer[] is 20 bytes // iterate over the pwm_buffer contents at 16 byte intervals - for ( int i = 0; i < 144; i += 16 ) - { + for ( int i = 0; i < 144; i += 16 ) { // set the first register, e.g. 0x24, 0x34, 0x44, etc. g_twi_transfer_buffer[0] = 0x24 + i; // copy the data from i to i+15 // device will auto-increment register for data after the first byte // thus this sets registers 0x24-0x33, 0x34-0x43, etc. in one transfer - for ( int j = 0; j < 16; j++ ) - { + for ( int j = 0; j < 16; j++ ) { g_twi_transfer_buffer[1 + j] = pwm_buffer[i + j]; } - //Transmit buffer until succesful - //while(i2c_transmit(addr << 1, g_twi_transfer_buffer,17) != 0); - ret |= i2c_transmit(addr << 1, g_twi_transfer_buffer, 17); + #if ISSI_PERSISTENCE > 0 + for (uint8_t i = 0; i < ISSI_PERSISTENCE; i++) { + if (i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT) == 0) + break; + } + #else + i2c_transmit(addr << 1, g_twi_transfer_buffer, 17, ISSI_TIMEOUT); + #endif } - return ret; } -uint8_t IS31FL3731_init( uint8_t addr ) +void IS31FL3731_init( uint8_t addr ) { - uint8_t ret = 0; // In order to avoid the LEDs being driven with garbage data // in the LED driver's PWM registers, first enable software shutdown, // then set up the mode and other settings, clear the PWM registers, // then disable software shutdown. // select "function register" bank - ret |= IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG ); + IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG ); // enable software shutdown - ret |= IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x00 ); + IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x00 ); // this delay was copied from other drivers, might not be needed _delay_ms( 10 ); // picture mode - ret |= IS31FL3731_write_register( addr, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE ); + IS31FL3731_write_register( addr, ISSI_REG_CONFIG, ISSI_REG_CONFIG_PICTUREMODE ); // display frame 0 - ret |= IS31FL3731_write_register( addr, ISSI_REG_PICTUREFRAME, 0x00 ); + IS31FL3731_write_register( addr, ISSI_REG_PICTUREFRAME, 0x00 ); // audio sync off - ret |= IS31FL3731_write_register( addr, ISSI_REG_AUDIOSYNC, 0x00 ); + IS31FL3731_write_register( addr, ISSI_REG_AUDIOSYNC, 0x00 ); // select bank 0 - ret |= IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 ); + IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 ); // turn off all LEDs in the LED control register for ( int i = 0x00; i <= 0x11; i++ ) { - ret |= IS31FL3731_write_register( addr, i, 0x00 ); + IS31FL3731_write_register( addr, i, 0x00 ); } // turn off all LEDs in the blink control register (not really needed) for ( int i = 0x12; i <= 0x23; i++ ) { - ret |= IS31FL3731_write_register( addr, i, 0x00 ); + IS31FL3731_write_register( addr, i, 0x00 ); } // set PWM on all LEDs to 0 for ( int i = 0x24; i <= 0xB3; i++ ) { - ret |= IS31FL3731_write_register( addr, i, 0x00 ); + IS31FL3731_write_register( addr, i, 0x00 ); } // select "function register" bank - ret |= IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG ); + IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, ISSI_BANK_FUNCTIONREG ); // disable software shutdown - ret |= IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x01 ); + IS31FL3731_write_register( addr, ISSI_REG_SHUTDOWN, 0x01 ); // select bank 0 and leave it selected. // most usage after initialization is just writing PWM buffers in bank 0 // as there's not much point in double-buffering - ret |= IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 ); + IS31FL3731_write_register( addr, ISSI_COMMANDREGISTER, 0 ); - return ret; } void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue ) @@ -224,32 +236,27 @@ void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, b g_led_control_registers_update_required = true; - } -uint8_t IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 ) +void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 ) { - uint8_t ret = 0; if ( g_pwm_buffer_update_required ) { - ret |= IS31FL3731_write_pwm_buffer( addr1, g_pwm_buffer[0] ); - ret |= IS31FL3731_write_pwm_buffer( addr2, g_pwm_buffer[1] ); + IS31FL3731_write_pwm_buffer( addr1, g_pwm_buffer[0] ); + IS31FL3731_write_pwm_buffer( addr2, g_pwm_buffer[1] ); } g_pwm_buffer_update_required = false; - return ret; } -uint8_t IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 ) +void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 ) { - uint8_t ret = 0; if ( g_led_control_registers_update_required ) { for ( int i=0; i<18; i++ ) { - ret |= IS31FL3731_write_register(addr1, i, g_led_control_registers[0][i] ); - ret |= IS31FL3731_write_register(addr2, i, g_led_control_registers[1][i] ); + IS31FL3731_write_register(addr1, i, g_led_control_registers[0][i] ); + IS31FL3731_write_register(addr2, i, g_led_control_registers[1][i] ); } } - return ret; } |