template.c File Reference

This file serves as a template for a customer specific HAL. More...

Functions
static void	_Sleep (uint32_t ms)
static int	_I2CRead (void *handle, uint8_t slAddr, uint8_t *wrData, int wrLen, uint8_t *rdData, int rdLen)
static int	_I2CWrite (void *handle, uint8_t slAddr, uint8_t *wrData1, int wrLen1, uint8_t *wrData2, int wrLen2)
static int	_Reset ()
int	HAL_Init (Interface_t *hal)
	Initialize hardware and populate Interface_t object. More...
int	HAL_Deinit (Interface_t *hal)
	Cleanup before program exit. More...
void	HAL_HandleError (int errorCode, void const *context)
	Error handling function. More...

Function Documentation

_I2CRead()

static int _I2CRead ( void *  handle, uint8_t  slAddr, uint8_t *  wrData, int  wrLen, uint8_t *  rdData, int  rdLen  )

static

The implementation of this function shall read data from I2C, strictly following the procedure below. If wrLen is not zero, the read must be preceded by an I2C write.

• I2C Start
• if wrLen != 0:
  • Send: slAddr + WRITE
  • Send: wrLen bytes from wrData
  • I2C Restart ( no stop before this start condition! )
• Send: SlaveAddres + READ
• Receive: rdLen bytes into rdData
• I2CStop

_I2CWrite()

static int _I2CWrite ( void *  handle, uint8_t  slAddr, uint8_t *  wrData1, int  wrLen1, uint8_t *  wrData2, int  wrLen2  )

static

The implementation of this function shall send the data provided in arguments wrData1 and wrData2 over the I2C bus. Both data blocks shall be sent directly after each other without a new start/restart condition.

• I2C Start
• Send: slAddr + WRITE
• if wrLen1 != 0:
  • Send: wrLen1 bytes from wrData1
• if wrLen2 != 0;
  • Send: wrLen2 bytes from wrData2
• I2CStop

_Reset()

static int _Reset ( )

static

This function shall pulse the reset pin of the RRH46410.

Note

Refer to the datasheet of the sensor(s) being interfaced for reset timing requirements.

_Sleep()

static void _Sleep ( uint32_t  ms )

static

This function should do nothing but returning after the number of milliseconds passed in the 'ms' argument.