diff options
Diffstat (limited to 'drivers/arm/i2c_master.h')
| -rw-r--r-- | drivers/arm/i2c_master.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h index 4ab2301f8..a15f1702d 100644 --- a/drivers/arm/i2c_master.h +++ b/drivers/arm/i2c_master.h @@ -40,11 +40,17 @@ #define I2C_DRIVER I2CD1 #endif +typedef int16_t i2c_status_t; + +#define I2C_STATUS_SUCCESS (0) +#define I2C_STATUS_ERROR (-1) +#define I2C_STATUS_TIMEOUT (-2) + void i2c_init(void); -uint8_t i2c_start(uint8_t address); -uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout); -uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout); -uint8_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length); -uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout); -uint8_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout); -uint8_t i2c_stop(void); +i2c_status_t i2c_start(uint8_t address); +i2c_status_t i2c_transmit(uint8_t address, const 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_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length); +i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const 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); +void i2c_stop(void); |