User manual

I2C API reference

I2CRead

I2CRead — Reads data from an I2C partner.

Syntax

#include <AnaGateDllI2C.h>

int I2CRead(int hHandle, unsigned short nSlaveAddress, const char *

pcBuffer, int nBufferLen);

Parameter

hHandle Valid access handle.

nSlaveAddress Slave address of the I2C partner. The slave address can represent a so-called 7-bit

or 10-bit address. (siehe Appendix B, I2C slave address formats).

pcBuffer Byte buffer in which the data received from the I2C partner is to be stored.

nBufferLen Number of bytes to read.

Return value

Returns Null if successful, or an error value otherwise (Appendix A, Return Codes).

Description

Reads data from an I2C partner. The user must ensure that the setup of the data buffer and the address

of the I2C partner are correct.

The R/W bit of the slave address does not have to be explicitly set by the user.