DlnI2cSlaveGetAddressCount() Function

The DlnI2cSlaveGetAddressCount() function retrieves the number of I²C slave addresses supported by the DLN adapter.

DLN-series adapters can acknowledge any I²C slave address. The limitation is only in the amount of slave addresses to be used simultaneously. You can use the DlnI2cSlaveSetAddress() function to configure the I²C slave module to acknowledge specific addresses.

Syntax

C/C++

DLN_RESULT DlnI2cSlaveGetAddressCount(
   HDLN handle,
   uint8_t port,
   uint8_t* count
);

Parameters

handle: A handle to the DLN-series adapter
port: A number of the I²C slave port.
count: A pointer to an unsigned 8-bit integer that receives the number of supported I²C slave addresses.

Return Value

DLN_RES_SUCCESS (0x00): The function successfully retrieved the number of possible slave addresses.
DLN_RES_INVALID_PORT_NUMBER (0xA8): The port number is not valid. Use the DlnI2cSlaveGetPortCount() function to find the maximum possible port number.

Remarks

The DlnI2cSlaveGetAddressCount() function is defined in the dln_i2c_slave.h file.

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