fix mousekey call

[qmk_firmware.git] / drivers / avr / i2c_master.c

diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c
index f25e354b808066364408f122d3742287f3bfd63d..47c6f8e6c64af021614feae3c0d7d767e204336f 100755 (executable)
--- a/drivers/avr/i2c_master.c
+++ b/drivers/avr/i2c_master.c
@@ -15,16 +15,15 @@
 void i2c_init(void)
 {
   TWSR = 0;     /* no prescaler */
-       TWBR = (uint8_t)TWBR_val;
-  //TWBR = 10;
+  TWBR = (uint8_t)TWBR_val;
 }
 
 i2c_status_t i2c_start(uint8_t address, uint16_t timeout)
 {
-       // reset TWI control register
-       TWCR = 0;
-       // transmit START condition
-       TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+  // reset TWI control register
+  TWCR = 0;
+  // transmit START condition
+  TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
 
   uint16_t timeout_timer = timer_read();
   while( !(TWCR & (1<<TWINT)) ) {
@@ -33,13 +32,13 @@ i2c_status_t i2c_start(uint8_t address, uint16_t timeout)
     }
   }
 
-       // check if the start condition was successfully transmitted
-       if(((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)){ return I2C_STATUS_ERROR; }
+  // check if the start condition was successfully transmitted
+  if(((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)){ return I2C_STATUS_ERROR; }
 
-       // load slave address into data register
-       TWDR = address;
-       // start transmission of address
-       TWCR = (1<<TWINT) | (1<<TWEN);
+  // load slave address into data register
+  TWDR = address;
+  // start transmission of address
+  TWCR = (1<<TWINT) | (1<<TWEN);
 
   timeout_timer = timer_read();
   while( !(TWCR & (1<<TWINT)) ) {
@@ -48,19 +47,19 @@ i2c_status_t i2c_start(uint8_t address, uint16_t 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 I2C_STATUS_ERROR;
+  // 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 I2C_STATUS_ERROR;
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 i2c_status_t i2c_write(uint8_t data, uint16_t timeout)
 {
-       // load data into data register
-       TWDR = data;
-       // start transmission of data
-       TWCR = (1<<TWINT) | (1<<TWEN);
+  // load data into data register
+  TWDR = data;
+  // start transmission of data
+  TWCR = (1<<TWINT) | (1<<TWEN);
 
   uint16_t timeout_timer = timer_read();
   while( !(TWCR & (1<<TWINT)) ) {
@@ -69,16 +68,16 @@ i2c_status_t i2c_write(uint8_t data, uint16_t timeout)
     }
   }
 
-       if( (TW_STATUS & 0xF8) != TW_MT_DATA_ACK ){ return I2C_STATUS_ERROR; }
+  if( (TW_STATUS & 0xF8) != TW_MT_DATA_ACK ){ return I2C_STATUS_ERROR; }
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 int16_t i2c_read_ack(uint16_t timeout)
 {
 
-       // start TWI module and acknowledge data after reception
-       TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
+  // start TWI module and acknowledge data after reception
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
 
   uint16_t timeout_timer = timer_read();
   while( !(TWCR & (1<<TWINT)) ) {
@@ -87,15 +86,15 @@ int16_t i2c_read_ack(uint16_t timeout)
     }
   }
 
-       // return received data from TWDR
-       return TWDR;
+  // return received data from TWDR
+  return TWDR;
 }
 
 int16_t i2c_read_nack(uint16_t timeout)
 {
 
-       // start receiving without acknowledging reception
-       TWCR = (1<<TWINT) | (1<<TWEN);
+  // start receiving without acknowledging reception
+  TWCR = (1<<TWINT) | (1<<TWEN);
 
   uint16_t timeout_timer = timer_read();
   while( !(TWCR & (1<<TWINT)) ) {
@@ -104,39 +103,39 @@ int16_t i2c_read_nack(uint16_t timeout)
     }
   }
 
-       // return received data from TWDR
-       return TWDR;
+  // return received data from TWDR
+  return TWDR;
 }
 
 i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_status_t status = i2c_start(address | I2C_WRITE, timeout);
-       if (status) return status;
+  if (status) return status;
 
-       for (uint16_t i = 0; i < length; i++) {
-               status = i2c_write(data[i], timeout);
+  for (uint16_t i = 0; i < length; i++) {
+    status = i2c_write(data[i], timeout);
     if (status) return status;
-       }
+  }
 
-       status = i2c_stop(timeout);
+  status = i2c_stop(timeout);
   if (status) return status;
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_status_t status = i2c_start(address | I2C_READ, timeout);
-       if (status) return status;
+  if (status) return status;
 
-       for (uint16_t i = 0; i < (length-1); i++) {
+  for (uint16_t i = 0; i < (length-1); i++) {
     status = i2c_read_ack(timeout);
     if (status >= 0) {
       data[i] = status;
     } else {
       return status;
     }
-       }
+  }
 
   status = i2c_read_nack(timeout);
   if (status >= 0 ) {
@@ -148,47 +147,47 @@ i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16
   status = i2c_stop(timeout);
   if (status) return status;
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_status_t status = i2c_start(devaddr | 0x00, timeout);
-       if (status) return status;
+  if (status) return status;
 
-       status = i2c_write(regaddr, timeout);
+  status = i2c_write(regaddr, timeout);
   if (status) return status;
 
-       for (uint16_t i = 0; i < length; i++) {
+  for (uint16_t i = 0; i < length; i++) {
     status = i2c_write(data[i], timeout);
-               if (status) return status;
-       }
+    if (status) return status;
+  }
 
-       status = i2c_stop(timeout);
+  status = i2c_stop(timeout);
   if (status) return status;
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
 {
   i2c_status_t status = i2c_start(devaddr, timeout);
-       if (status) return status;
+  if (status) return status;
 
   status = i2c_write(regaddr, timeout);
   if (status) return status;
 
   status = i2c_start(devaddr | 0x01, timeout);
-       if (status) return status;
+  if (status) return status;
 
-       for (uint16_t i = 0; i < (length-1); i++) {
-               status = i2c_read_ack(timeout);
+  for (uint16_t i = 0; i < (length-1); i++) {
+    status = i2c_read_ack(timeout);
     if (status >= 0) {
       data[i] = status;
     } else {
       return status;
     }
-       }
+  }
 
   status = i2c_read_nack(timeout);
   if (status >= 0 ) {
@@ -200,13 +199,13 @@ i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16
   status = i2c_stop(timeout);
   if (status) return status;
 
-       return I2C_STATUS_SUCCESS;
+  return I2C_STATUS_SUCCESS;
 }
 
 i2c_status_t i2c_stop(uint16_t timeout)
 {
-       // transmit STOP condition
-       TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+  // transmit STOP condition
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
 
   uint16_t timeout_timer = timer_read();
   while(TWCR & (1<<TWSTO)) {
@@ -216,4 +215,4 @@ i2c_status_t i2c_stop(uint16_t timeout)
   }
 
   return I2C_STATUS_SUCCESS;
-}
+}
\ No newline at end of file