EA Electronics F5132EX User Manual

MSP430F5132 Experimenter’s Board (F5132EX)

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 1

User Guide

EA Electronics

8 Maple St. Ajax, ON

Canada

www.eaelec.com

Introduction

The Texas Instruments MSP430™ family of ultra low-power micro-controllers consists of several
devices featuring different sets of peripherals targeted for various applications. The architecture,
combined with five low-power modes, is optimized to achieve extended battery life in portable
measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and
constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO)
allows wake up from low-power modes to active mode in less than 5 μs.

Schematic

The Experimenter’s board provides the micro-controller, an RS232 serial port, a JTAG header for
software debugging, 2 low-dropout voltage regulators and a prototyping area. The standard micro­controller is the MSP430F5132 in the 38 pin TSSOP package. This chip features 8K of flash and 1K of
SRAM memory. The board is also available with the MSP430F5172 (32K flash, 2K SRAM) for
applications which require more memory.

The JTAG header (J1) is used to connect the MSP-FET430UIF. The MSP-FET430UIF is and in­circuit programming/debugging tool made by Texas Instruments. It is not included with the F5132EX but
can be purchased from any large distributor of TI products such as Digi-Key. The Code Composer Studio
IDE can be downloaded for free from www.ti.com and provides the assembler and C compiler.

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 2

The JTAG Header

Prototyping Area

The prototyping area has pads for 3 TSSOP devices (up to 20 pins), 3 SOIC devices (up to 20
pins), 4 DPAKs, 4 SOT-23, a 2mm header (10x2), a 1.5mm header (1x6), various DIPs and .1” headers,
and many 2 terminal devices (both surface mount and through hole); such as resistors, capacitors and
diodes. The port pins on the MSP430F5132 are broken out to SIP pads at the edge of the prototyping
area. Note: the following port signals are not bonded out on the 38 pin TSSOP package: ports 3.4, 3.7,
J.4 J.5 and J.7. Pins J.0 thru J.3 are not available when using the JTAG debugger.

Top View

GPIO Port Breakout Connections

Port 1 Port 2 Port 3 Port J

Pin 1 AGND Pin 1 DGND Pin 1 DGND Pin 1 DGND

Pin 2 P1.0 Pin 2 P2.0 Pin 2 P3.0 Pin 2 PJ.0*

Pin 3 P1.1# Pin 3 P2.1 Pin 3 P3.1 Pin 3 PJ.1*

Pin 4 P1.2# Pin 4 P2.2 Pin 4 P3.2 Pin 4 PJ.2*

Pin 5 P1.3 Pin 5 P2.3 Pin 5 P3.3 Pin 5 PJ.3*

Pin 6 P1.4 Pin 6 P2.4 Pin 6 NC Pin 6 NC

Pin 7 P1.5 Pin 7 P2.5 Pin 7 P3.5 Pin 7 PJ.6

Pin 8 P1.6 Pin 8 P2.6 Pin 8 P3.6^ Pin 8 NC

Pin 9 P1.7 Pin 9 P2.7 Pin 9 NC Pin 9 NC

Pin 10 AVCC (+3.3v) Pin 10 DVCC (+3.3v) Pin 10 DVCC (+3.3v) Pin 10 DVCC (+3.3v)

*= not available if using JTAG debugger

#= not available if using serial port

^= Used to drive LED2 if JP2 is installed

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 3

Power Supply

The F5132EX board can be powered in from either the MSP430-FET debugger or through the on
board 3.3V regulator. When powering from the MSP430-FET debugger remove jumper JP3 and short
pins 2 & 3 on JP1 (see photo below). When powering from the on board regulator, install jumper JP3 and
short pins 1 & 2 on JP1.

The main on board voltage regulator is a 3 amp, 3.3 volt low-dropout linear regulator. There is
also a 100 milliamp, 5 volt auxiliary regulator for powering analog circuits. A screw terminal connector
(W1) is provided for connecting to batteries or an external DC power supply. Maximum input voltage on
W1 is 15 volts.

Using MSP430-FET Power

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 4

Using Battery (or DC supply) Power

Minimum input voltages (on W1) for proper regulation:

3.8 volts if using only the 3.3V supply

5.5 volts if using both the 3.3V and 5 volt supplies

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 5

The Demo Program

The F5132EX board is factory programmed with a simple demo program. To use the demo: leave
the jumpers in their factory setting, connect the board to a PC serial port using the cable included, start
up a terminal program on the PC (Hyperterm or Tera Term, for example) set the port for 9600 bps, 1 stop,
no parity, HW control off. Connect the F5132EX to a DC power supply or battery using connector W1.
You will see the banner on the PC:

***********************************
* EA Electronics *
* MSP430F5132 Demo Program V1.0 *
***********************************

If you type a line in lower case on the terminal program, the demo program echoes back the line
in upper case after you hit the enter key. So if you type:

now hear this.

Followed by the enter key, the program echoes back :

NOW HEAR THIS.

The program also configures all port pins (except P1.1 & P1.2) as outputs and toggles them twice
a second.

Demo Source Code

#include <msp430.h>
#include <stdio.h>
#include <ctype.h>

void initPortPins(void);
void send_msg( char * buf, int len );

char startup1[] = {"\n***********************************\n\r"};
char startup2[] = {"\n* EA Electronics *\n\r"};
char startup3[] = {"\n* MSP430F5132 Demo Program V1.0 *\n\r"};
char startup4[] = {"\n***********************************\n\r"};
char newline[] = {"\n\r"};

#define END_OF_BUFFER 50

void initPortPins(void);
void send_msg( char * buf, int len );
void serial_echo( void );

/*
* main.c
* Serial port echo and toggle IO pins
*/
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer

unsigned int j;

initPortPins();

// set up Serial port for 9600, 1 stop, no parity

UCA0CTL1 |= UCSWRST; // **Put state machine in reset**

UCA0CTL1 |= UCSSEL_1; // CLK = ACLK

UCA0BR0 = 0x03; // 32kHz/9600

UCA0BR1 = 0x00; //

UCA0MCTL = UCBRS_3+UCBRF_0; // Modulation UCBRSx=3, UCBRFx=0

UCA0CTL1 &= ~UCSWRST; // release USCI for operation

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// print start-up banner

send_msg( newline, sizeof(newline) );

send_msg( startup1, sizeof(startup1) );

send_msg( startup2, sizeof(startup2) );

send_msg( startup3, sizeof(startup3) );

send_msg( startup4, sizeof(startup4) );

for(;;)

{

for( j=0; j<15000; j++)
{
serial_echo();

}
P3OUT = (0xAA);
P2OUT = (0xAA);
P1OUT = (0xAA);
PJOUT = (0xAA);

{

}

return 0;
}

// echo routine
unsigned int b = 0; // buffer index
char inbuf[END_OF_BUFFER];

void serial_echo( void )
{

// check for a character on the input

if(UCA0IFG&UCRXIFG)

{

}
}

for( j=0; j<15000; j++)

serial_echo();
}
P3OUT = (0x55);
P2OUT = (0x55);
P1OUT = (0x55);
PJOUT = (0x55);

// save it in the buffer
inbuf[b] = toupper(UCA0RXBUF);
b++;

// check for end of line or buffer full
if( (inbuf[b] == '\r') || (b == END_OF_BUFFER) )
{

// echo the message

send_msg( inbuf, b-1 );

send_msg( newline, sizeof(newline) );

b = 0;
}

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void send_msg( char * buf, int len )
{

}
void initPortPins(void)
{

int i;

for( i=0; i<len;)
{

if(UCA0IFG&UCTXIFG) // USCI_A0 TX buffer ready?
{

UCA0TXBUF = ( buf[i] ); // TX -> RXed character

i++;
}
else
{

continue;
}

}

P1DIR |= BIT1; // Set P1.1 as TX output
P1SEL |= BIT1 + BIT2; // Select P1.1 & P1.2 to UART function
P2DIR = 0xFF; // all pins as outputs

P3DIR = 0xFF; // all pins as outputs

}

PJDIR = 0xFF; // all pins as outputs

You can download the entire Code Composer project for the demo program, go to:

www.eaelec.com\ea_eval\eval.htm

F5132EX User’s Guide Rev. 1.1 – Apr./2016 Page 8

The Serial Port

The serial port utilizes only 3 pins on the DB9M connector (TX, RX and GND). A null modem

serial cable is included for connection to a PC serial port .

Cable Drawing

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Bill of Materials

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