I2C

The i2c connector in the node can be added in the device tree of the KCH Control ARM VFP Linux.

Parameters

With the new i2c master node there are read/write commands available.

i2cMaster.read (METH)

METHOD read : DINT

This method is used to directly read nBufferLen bytes from a device with a certain address return value: number of bytes that have actually been read.

Parameters

Return Values

Example

diRetvalRead: DINT;
diRetvalWrite: DINT;
usiAddress: USINT := 16#50;
dataAddress : BYTE := 16#15;
datatoread:  ARRAY [0..1] OF BYTE  := [2(0)];

dataAddress := 16#15;
diRetvalWrite := I2C_master.write(usiAddress, ADR(dataAddress), 1);  
diRetvalRead := I2C_master.read(usiAddress, ADR(datatoread), 2);

i2cMaster.write(METH)

METHOD write : DINT

This method is used to directly write nBufferLen bytes to a device with a certain address

Parameters

Return Values

Example

diRetvalWrite: DINT;
usiAddress: USINT := 16#50;
dataAddress : BYTE := 16#15;
datatostore:  ARRAY [0..2] OF BYTE  := [3(0)];

datatostore[0] := dataAddress;
datatostore[1] := 1;
datatostore[2] := 1;
diRetvalWrite := I2C_master.write(usiAddress, ADR(datatostore), 3);

Hardware

SOM Evalboard:

imx6 WPC Board: