Ucs_Return_t Ucs_I2c_ReadPort	(	Ucs_Inst_t *	self,
		uint16_t	node_address,
		uint16_t	port_handle,
		uint8_t	slave_address,
		uint8_t	data_len,
		uint16_t	timeout,
		Ucs_I2c_ReadPortResCb_t	result_fptr
	)

Reads a block of bytes from an I2C device at a specified I2C address.

This function corresponds with the INIC function INIC.I2CPortRead.

Parameters

self	The UNICENS instance pointer
node_address	Address of the target device. Use the UCS_ADDR_LOCAL_NODE macro to target the local device. The following address ranges are supported: [0x10 ... 0x2FF] [0x500 ... 0xFEF] UCS_ADDR_LOCAL_NODE
port_handle	Port resource handle.   I2CPortHandle
slave_address	The 7-bit I2C slave address of the peripheral to be read.   SlaveAddress
data_len	Number of bytes to be read from the address.   Length
timeout	The timeout for the I2C Port read.   Timeout
result_fptr	Required result callback function pointer.

Returns

Possible return values are shown in the table below.

Value	Description
UCS_RET_SUCCESS	No error
UCS_RET_ERR_PARAM	At least one parameter is wrong.
UCS_RET_ERR_BUFFER_OVERFLOW	No message buffer is available.
UCS_RET_ERR_API_LOCKED	API is currently locked.
UCS_RET_ERR_NOT_SUPPORTED	API is not supported in the current Network Supervisor Mode.
UCS_RET_ERR_NOT_INITIALIZED	UNICENS is not initialized.

See also section Example for Ucs_I2c_ReadPort for an example implementation.