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-rwxr-xr-xdrivers/avr/i2c_master.c133
-rwxr-xr-xdrivers/avr/i2c_master.h25
-rw-r--r--drivers/avr/is31fl3731.c87
-rw-r--r--drivers/avr/is31fl3731.h10
4 files changed, 147 insertions, 108 deletions
diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c
index caca2179e..30ea760c9 100755
--- a/drivers/avr/i2c_master.c
+++ b/drivers/avr/i2c_master.c
@@ -19,7 +19,7 @@ void i2c_init(void)
//TWBR = 10;
}
-i2c_status_t i2c_start(uint8_t address, uint8_t timeout)
+i2c_status_t i2c_start(uint8_t address, uint16_t timeout)
{
// reset TWI control register
TWCR = 0;
@@ -28,13 +28,13 @@ i2c_status_t i2c_start(uint8_t address, uint8_t timeout)
uint16_t timeout_timer = timer_read();
while( !(TWCR & (1<<TWINT)) ) {
- if (timeout && (timer_read() - timeout_timer) > timeout) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
// check if the start condition was successfully transmitted
- if(((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)){ return 1; }
+ if(((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)){ return I2C_STATUS_ERROR; }
// load slave address into data register
TWDR = address;
@@ -43,19 +43,19 @@ i2c_status_t i2c_start(uint8_t address, uint8_t timeout)
timeout_timer = timer_read();
while( !(TWCR & (1<<TWINT)) ) {
- if (timeout && (timer_read() - timeout_timer) > I2C_TIMEOUT) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
// check if the device has acknowledged the READ / WRITE mode
uint8_t twst = TW_STATUS & 0xF8;
- if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
+ if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return I2C_STATUS_ERROR;
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-i2c_status_t i2c_write(uint8_t data, uint8_t timeout)
+i2c_status_t i2c_write(uint8_t data, uint16_t timeout)
{
// load data into data register
TWDR = data;
@@ -64,17 +64,17 @@ i2c_status_t i2c_write(uint8_t data, uint8_t timeout)
uint16_t timeout_timer = timer_read();
while( !(TWCR & (1<<TWINT)) ) {
- if (timeout && (timer_read() - timeout_timer) > I2C_TIMEOUT) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
- if( (TW_STATUS & 0xF8) != TW_MT_DATA_ACK ){ return 1; }
+ if( (TW_STATUS & 0xF8) != TW_MT_DATA_ACK ){ return I2C_STATUS_ERROR; }
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-i2c_status_t i2c_read_ack(uint8_t timeout)
+int16_t i2c_read_ack(uint16_t timeout)
{
// start TWI module and acknowledge data after reception
@@ -82,7 +82,7 @@ i2c_status_t i2c_read_ack(uint8_t timeout)
uint16_t timeout_timer = timer_read();
while( !(TWCR & (1<<TWINT)) ) {
- if (timeout && (timer_read() - timeout_timer) > I2C_TIMEOUT) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -91,7 +91,7 @@ i2c_status_t i2c_read_ack(uint8_t timeout)
return TWDR;
}
-i2c_status_t i2c_read_nack(uint8_t timeout)
+int16_t i2c_read_nack(uint16_t timeout)
{
// start receiving without acknowledging reception
@@ -99,7 +99,7 @@ i2c_status_t i2c_read_nack(uint8_t timeout)
uint16_t timeout_timer = timer_read();
while( !(TWCR & (1<<TWINT)) ) {
- if (timeout && (timer_read() - timeout_timer) > I2C_TIMEOUT) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
@@ -108,81 +108,112 @@ i2c_status_t i2c_read_nack(uint8_t timeout)
return TWDR;
}
-i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length)
+i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
{
- if (i2c_start(address | I2C_WRITE)) return 1;
+ i2c_status_t status = i2c_start(address | I2C_WRITE, timeout);
+ if (status) return status;
- for (uint16_t i = 0; i < length; i++)
- {
- if (i2c_write(data[i])) return 1;
+ for (uint16_t i = 0; i < length; i++) {
+ status = i2c_write(data[i], timeout);
+ if (status) return status;
}
- i2c_stop();
+ status = i2c_stop(timeout);
+ if (status) return status;
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length)
+i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
{
- if (i2c_start(address | I2C_READ)) return 1;
-
- for (uint16_t i = 0; i < (length-1); i++)
- {
- data[i] = i2c_read_ack();
+ i2c_status_t status = i2c_start(address | I2C_READ, timeout);
+ if (status) return status;
+
+ for (uint16_t i = 0; i < (length-1); i++) {
+ status = i2c_read_ack(timeout);
+ if (status >= 0) {
+ data[i] = status;
+ } else {
+ return status;
+ }
}
- data[(length-1)] = i2c_read_nack();
- i2c_stop();
+ status = i2c_read_nack(timeout);
+ if (status >= 0 ) {
+ data[(length-1)] = status;
+ } else {
+ return status;
+ }
+
+ status = i2c_stop(timeout);
+ if (status) return status;
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length)
+i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
{
- if (i2c_start(devaddr | 0x00)) return 1;
+ i2c_status_t status = i2c_start(devaddr | 0x00, timeout);
+ if (status) return status;
- i2c_write(regaddr);
+ status = i2c_write(regaddr, timeout);
+ if (status) return status;
- for (uint16_t i = 0; i < length; i++)
- {
- if (i2c_write(data[i])) return 1;
+ for (uint16_t i = 0; i < length; i++) {
+ status = i2c_write(data[i], timeout);
+ if (status) return status;
}
- i2c_stop();
+ status = i2c_stop(timeout);
+ if (status) return status;
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length)
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
{
- if (i2c_start(devaddr)) return 1;
+ i2c_status_t status = i2c_start(devaddr, timeout);
+ if (status) return status;
- i2c_write(regaddr);
+ status = i2c_write(regaddr, timeout);
+ if (status) return status;
- if (i2c_start(devaddr | 0x01)) return 1;
+ status = i2c_start(devaddr | 0x01, timeout);
+ if (status) return status;
- for (uint16_t i = 0; i < (length-1); i++)
- {
- data[i] = i2c_read_ack();
+ for (uint16_t i = 0; i < (length-1); i++) {
+ status = i2c_read_ack(timeout);
+ if (status >= 0) {
+ data[i] = status;
+ } else {
+ return status;
+ }
}
- data[(length-1)] = i2c_read_nack();
- i2c_stop();
+ status = i2c_read_nack(timeout);
+ if (status >= 0 ) {
+ data[(length-1)] = status;
+ } else {
+ return status;
+ }
+
+ status = i2c_stop(timeout);
+ if (status) return status;
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-i2c_status_t i2c_stop(uint8_t timeout)
+i2c_status_t i2c_stop(uint16_t timeout)
{
// transmit STOP condition
TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
uint16_t timeout_timer = timer_read();
while(TWCR & (1<<TWSTO)) {
- if (timeout && (timer_read() - timeout_timer) > I2C_TIMEOUT) {
+ if (timeout && ((timer_read() - timeout_timer) > timeout)) {
return I2C_STATUS_TIMEOUT;
}
}
- return 0;
+ return I2C_STATUS_SUCCESS;
}
diff --git a/drivers/avr/i2c_master.h b/drivers/avr/i2c_master.h
index 3c7731e8d..0806d76aa 100755
--- a/drivers/avr/i2c_master.h
+++ b/drivers/avr/i2c_master.h
@@ -8,20 +8,21 @@
#define I2C_READ 0x01
#define I2C_WRITE 0x00
-typedef i2c_status_t int16_t
-#define I2C_STATUS_TIMEOUT (-1)
+typedef int16_t i2c_status_t;
-#define I2C_NO_TIMEOUT 0
+#define I2C_STATUS_SUCCESS (0)
+#define I2C_STATUS_ERROR (-1)
+#define I2C_STATUS_TIMEOUT (-2)
void i2c_init(void);
-i2c_status_t i2c_start(uint8_t address, uint8_t timeout);
-i2c_status_t i2c_write(uint8_t data, uint8_t timeout);
-i2c_status_t i2c_read_ack(uint8_t timeout);
-i2c_status_t i2c_read_nack(uint8_t timeout);
-uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length);
-uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length);
-uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
-uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
-i2c_status_t i2c_stop(uint8_t timeout);
+i2c_status_t i2c_start(uint8_t address, uint16_t timeout);
+i2c_status_t i2c_write(uint8_t data, uint16_t timeout);
+int16_t i2c_read_ack(uint16_t timeout);
+int16_t i2c_read_nack(uint16_t timeout);
+i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_stop(uint16_t timeout);
#endif // I2C_MASTER_H
diff --git a/drivers/avr/is31fl3731.c b/drivers/avr/is31fl3731.c
index 158b77b7b..70813464b 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;
}
diff --git a/drivers/avr/is31fl3731.h b/drivers/avr/is31fl3731.h
index 62632e276..3d30fc67b 100644
--- a/drivers/avr/is31fl3731.h
+++ b/drivers/avr/is31fl3731.h
@@ -31,9 +31,9 @@ typedef struct is31_led {
extern const is31_led g_is31_leds[DRIVER_LED_TOTAL];
-uint8_t IS31FL3731_init( uint8_t addr );
-uint8_t IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data );
-uint8_t IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
+void IS31FL3731_init( uint8_t addr );
+void IS31FL3731_write_register( uint8_t addr, uint8_t reg, uint8_t data );
+void IS31FL3731_write_pwm_buffer( uint8_t addr, uint8_t *pwm_buffer );
void IS31FL3731_set_color( int index, uint8_t red, uint8_t green, uint8_t blue );
void IS31FL3731_set_color_all( uint8_t red, uint8_t green, uint8_t blue );
@@ -44,8 +44,8 @@ void IS31FL3731_set_led_control_register( uint8_t index, bool red, bool green, b
// (eg. from a timer interrupt).
// Call this while idle (in between matrix scans).
// If the buffer is dirty, it will update the driver with the buffer.
-uint8_t IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
-uint8_t IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
+void IS31FL3731_update_pwm_buffers( uint8_t addr1, uint8_t addr2 );
+void IS31FL3731_update_led_control_registers( uint8_t addr1, uint8_t addr2 );
#define C1_1 0x24
#define C1_2 0x25
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-21 17:01:52 +0100