I2C communication with a PCF8574 in read and write mode is demonstrated. PCF8574 port P is configured with P0-P3 input, P4-P7. Read P0-P3 input data is written back to Port P4-P7. This example uses the RX ISR and generates an I2C restart condition while switching from master receiver to master transmitter.LED toggles inside ISR.

msp430x47xx_uscib0_i2c_02.c

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