diff options
Diffstat (limited to 'drivers/avr/i2c_master.h')
| -rwxr-xr-x | drivers/avr/i2c_master.h | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/avr/i2c_master.h b/drivers/avr/i2c_master.h index 2479d28d52..cf93680be4 100755 --- a/drivers/avr/i2c_master.h +++ b/drivers/avr/i2c_master.h @@ -8,15 +8,24 @@ #define I2C_READ 0x01 #define I2C_WRITE 0x00 +typedef int16_t i2c_status_t; + +#define I2C_STATUS_SUCCESS (0) +#define I2C_STATUS_ERROR (-1) +#define I2C_STATUS_TIMEOUT (-2) + +#define I2C_TIMEOUT_IMMEDIATE (0) +#define I2C_TIMEOUT_INFINITE (0xFFFF) + void i2c_init(void); -uint8_t i2c_start(uint8_t address); -uint8_t i2c_write(uint8_t data); -uint8_t i2c_read_ack(void); -uint8_t i2c_read_nack(void); -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); -void i2c_stop(void); +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 |