#include "driverlib.h"

Macros
#define	SLAVE_ADDRESS 0x48

#define	RXCOUNT 0x05

#define	CS_SMCLK_DESIRED_FREQUENCY_IN_KHZ 1000

#define	CS_SMCLK_FLLREF_RATIO 30

Functions
void	main (void)

void	USCIB0_ISR (void)

Variables
uint8_t	RXData

Macro Definition Documentation

◆ CS_SMCLK_DESIRED_FREQUENCY_IN_KHZ

#define CS_SMCLK_DESIRED_FREQUENCY_IN_KHZ 1000

Definition at line 91 of file eusci_b_i2c_ex1_masterRxMultiple.c.

◆ CS_SMCLK_FLLREF_RATIO

#define CS_SMCLK_FLLREF_RATIO 30

Definition at line 98 of file eusci_b_i2c_ex1_masterRxMultiple.c.

◆ RXCOUNT

#define RXCOUNT 0x05

Definition at line 84 of file eusci_b_i2c_ex1_masterRxMultiple.c.

◆ SLAVE_ADDRESS

#define SLAVE_ADDRESS 0x48

MSP430FR4133 Demo - USCI_B0 I2C Master RX multiple bytes from MSP430 Slave

Description: This demo connects two MSP430's via the I2C bus. The master reads 5 bytes 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

                          /|\  /|\
         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.