#include "driverlib.h"

Macros
#define	SLAVE_ADDRESS 0x48

Functions
void	main (void)

void	USCIB0_ISR (void)

Variables
uint8_t	TXData = 0x00

Macro Definition Documentation

◆ SLAVE_ADDRESS

#define SLAVE_ADDRESS 0x48

Description: This demo connects two MSP430's via the I2C bus. The master reads from the slave. This is the SLAVE code. The TX data begins at 0 and is incremented each time it is sent. A stop condition is used as a trigger to increment the outgoing data. The USCI_B0 TX interrupt is used to know when to TX. 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)
SCL2
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.