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README.txt
I2C Test For Microchip board ############################ This application test is used to test the I2C driver on Microchip mec172xevb_assy6906 board. Board Hardware Setup #################### As the I2C slave device NXP pca95xx on mec172xevb_assy6906 is connected to I2C00 port, however, I2C00 port is shared with UART2 RS232 to TTL converter used to catch serial log, so it's not possible to use UART2 and I2C00 port simultaneously. We need to change to use I2C01 port by making some jumpers setting as below: * JP49 1-2 Connected Connect PCA9555 VCC to +3.3V_STBY * JP53 1-2 Connected Select address 0100b, which means 0x26 * JP12 13-14 Connected Connect I2C01_SDA from CPU to header J20 * JP12 4-5 Connected Connect I2C01_SCL from CPU to header J20 * JP77 7-8 Connected External pull-up for I2C01_SDA * JP77 9-10 Connected External pull-up for I2C01_SCL * JP58.1 J20.1 Connected Connect NXP PCA95xx to I2C01 * JP58.3 J20.3 Connected Connect NXP PCA95xx to I2C01