diff options
Diffstat (limited to 'drivers/avr/i2c_master.c')
| -rwxr-xr-x | drivers/avr/i2c_master.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/avr/i2c_master.c b/drivers/avr/i2c_master.c index 30ea760c9f..f25e354b80 100755 --- a/drivers/avr/i2c_master.c +++ b/drivers/avr/i2c_master.c @@ -28,7 +28,7 @@ i2c_status_t i2c_start(uint8_t address, uint16_t timeout) uint16_t timeout_timer = timer_read(); while( !(TWCR & (1<<TWINT)) ) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } @@ -43,7 +43,7 @@ i2c_status_t i2c_start(uint8_t address, uint16_t timeout) timeout_timer = timer_read(); while( !(TWCR & (1<<TWINT)) ) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } @@ -64,7 +64,7 @@ i2c_status_t i2c_write(uint8_t data, uint16_t timeout) uint16_t timeout_timer = timer_read(); while( !(TWCR & (1<<TWINT)) ) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } @@ -82,7 +82,7 @@ int16_t i2c_read_ack(uint16_t timeout) uint16_t timeout_timer = timer_read(); while( !(TWCR & (1<<TWINT)) ) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } @@ -99,7 +99,7 @@ int16_t i2c_read_nack(uint16_t timeout) uint16_t timeout_timer = timer_read(); while( !(TWCR & (1<<TWINT)) ) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } @@ -210,7 +210,7 @@ i2c_status_t i2c_stop(uint16_t timeout) uint16_t timeout_timer = timer_read(); while(TWCR & (1<<TWSTO)) { - if (timeout && ((timer_read() - timeout_timer) > timeout)) { + if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) { return I2C_STATUS_TIMEOUT; } } |