#include "driverlib.h"

Macros
#define	SLAVE_ADDRESS 0x48

Functions
void	main (void)

void	USCIB0_ISR (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 slave for single byte reception in interrupt driven mode. The address of the slave module is set in this example. EUSCI_B0 I2C Slave RX single bytes from MSP430 Master

Description: This demo connects two MSP430's via the I2C bus. The master transmits to the slave. This is the slave code. The interrupt driven data receiption is demonstrated using the USCI_B0 RX interrupt.

Tested on MSP430FR4133

                          /|\  /|\
         MSP430FR4133      10k  10k     MSP430FR4133
             slave         |    |        master
       -----------------   |    |   -----------------
     -|XIN  P5.2/UCB0SDA|<-|----+->|P5.2/UCB0SDA  XIN|-
      |                 |  |       |                 | 32kHz
     -|XOUT             |  |       |             XOUT|-
      |     P5.3/UCB0SCL|<-+------>|P5.3/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)
SCL
SDA
CS

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.