#include "driverlib.h"

Macros
#define	SLAVE_ADDRESS 0x48

Functions
void	main (void)

Variables
uint8_t	RXData

Macro Definition Documentation

◆ SLAVE_ADDRESS

#define SLAVE_ADDRESS 0x48

This example shows how to configure the I2C module as a master for single byte reception in interrupt driven mode. The address of the slave module that the master is communicating with also set in this example.

Description: This demo connects two MSP430's via the I2C bus. The master reads from the slave. This is the MASTER CODE. The data from the slave transmitter begins at 0 and increments with each transfer. The USCI_B0 RX interrupt is used to know when new data has been received. ACLK = n/a, MCLK = SMCLK = BRCLK = DCO = 1MHz

                          /|\  /|\
         MSP430FR5739      10k  10k     MSP430F5739
             slave         |    |        master
       -----------------   |    |   -----------------
     -|XIN  P1.6/UCB0SDA|<-|----+->|P1.6/UCB0SDA  XIN|-
      |                 |  |       |                 | 32kHz
     -|XOUT             |  |       |             XOUT|-
      |     P1.7/UCB0SCL|<-+------>|P1.7/UCB0SCL     |
      |                 |          |             P1.0|--> LED

This example uses the following peripherals and I/O signals. You must review these and change as needed for your own board:

I2C peripheral
GPIO Port peripheral (for I2C pins)
SCL2
SDA

This example uses the following interrupt handlers. To use this example in your own application you must add these interrupt handlers to your vector table.