#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];
// 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 )
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;
}
projects / qmk_firmware.git / blobdiff