Part Number: MSP-EXP430F5529LP
Other Parts Discussed in Thread: BOOSTXL-PGA460, PGA460, MSP430WARE, MSP430F5529, MSP430F5438A
Tool/software: Code Composer Studio
Hello
I am working in a project in an enterprise and I have the TI launchPad Kit with MSP430 MCU and an analog evaluation module - BOOSTXL-PGA460.
I communicate with the PGA460 with a program made in code compose studio.
To develop a program fastly I used a program in Software MSP430ware in the driver library and adapt it to my case.
The microcontroller in use is the MSP430F5529.
Here is the code I used for my program:
//******************************************************************************
//! This example shows how to configure the UART module as the loopback to
//! verify that received data is sent data.
//!
//! MSP430F5438A
//! -----------------
//! RST -| P3.4/UCA0TXD|----|
//! | | |
//! | | |
//! | P3.5/UCA0RXD|----|
//! | |
//!
//!
//! This example uses the following peripherals and I/O signals. You must
//! review these and change as needed for your own board:
//! - UART peripheral
//! - GPIO Port peripheral (for UART pins)
//! - UCA0TXD
//! - UCA0RXD
//!
//! 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.
//! - USCI_A0_VECTOR.
//******************************************************************************
#include "driverlib.h"
//*****************************************************************************
//
//Select Baud rate
//
//*****************************************************************************
#define BAUD_RATE 9600 //JS--
//#define BAUD_RATE 2400 //JS++ // nota: se eu alterar esta variável
// o débito binário observado no osciloscópio é sempre 9600 bps - para já vou deixar como está
//*****************************************************************************
//
//Initialize received data
//
//*****************************************************************************
uint8_t receivedData = 0x00;
//*****************************************************************************
//
//Initialize trasnmit data
//
//*****************************************************************************
uint8_t transmitData = 0x00;
uint8_t check = 0;
uint8_t i1 = 0 ; //JS++
uint8_t i2 = 0 ; //JS++
uint8_t i3 = 0 ; //JS++
void main (void)
{
//Stop WDT
WDT_A_hold(WDT_A_BASE);
GPIO_setAsOutputPin (GPIO_PORT_P2, GPIO_PIN2); //\ PD como saída
GPIO_setAsOutputPin (GPIO_PORT_P7, GPIO_PIN4); //porto SEL como saída
GPIO_setOutputLowOnPin (GPIO_PORT_P2, GPIO_PIN2 ); //coloca pino a zero
GPIO_setOutputLowOnPin (GPIO_PORT_P7, GPIO_PIN4 ); //coloca pino a zero
// Fim JS++
//JS--
GPIO_setAsPeripheralModuleFunctionInputPin(
GPIO_PORT_P3,
GPIO_PIN3 + GPIO_PIN4
);
//Fim JS++
//Fim JS++
// Pull-up resistor in P3.4 //JS++
GPIO_setAsInputPinWithPullUpResistor(GPIO_PORT_P3, GPIO_PIN4); //JS++
USCI_A_UART_initParam param = {0};
param.selectClockSource = USCI_A_UART_CLOCKSOURCE_SMCLK;
param.clockPrescalar = 109;
param.firstModReg = 0;
param.secondModReg = 2;
param.parity = USCI_A_UART_NO_PARITY;
param.msborLsbFirst = USCI_A_UART_LSB_FIRST;
// param.numberofStopBits = USCI_A_UART_ONE_STOP_BIT; //JS--
param.numberofStopBits = USCI_A_UART_TWO_STOP_BITS; //JS--
param.uartMode = USCI_A_UART_MODE;
param.overSampling = USCI_A_UART_LOW_FREQUENCY_BAUDRATE_GENERATION;
if (STATUS_FAIL == USCI_A_UART_init(USCI_A0_BASE, ¶m)){
return;
}
//Enable UART module for operation
USCI_A_UART_enable(USCI_A0_BASE);
//Enable Receive Interrupt
USCI_A_UART_clearInterrupt(USCI_A0_BASE,
USCI_A_UART_RECEIVE_INTERRUPT);
USCI_A_UART_enableInterrupt(USCI_A0_BASE,
USCI_A_UART_RECEIVE_INTERRUPT);
__enable_interrupt(); //JS--
transmitData = 0x55;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x0A;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x68;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x42;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x4B;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
for(i2=0; i2<20;i2++)
{
// for(i3=0;i3<255;i3++)
// {
for (i1=0; i1<255;i1++); //JS++
// }
}
transmitData = 0x55;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x09;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x68;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x8E;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
USCI_A_UART_clearInterrupt(USCI_A0_BASE,
USCI_A_UART_RECEIVE_INTERRUPT_FLAG);
while (1)
{
transmitData = 0x55;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x09;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x68;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
transmitData = 0x8E;
// Load data onto buffer
USCI_A_UART_transmitData(USCI_A0_BASE,
transmitData);
for(i2=0; i2<20;i2++)
{
// for(i3=0;i3<255;i3++)
// {
for (i1=0; i1<255;i1++); //JS++
// }
}
}
}
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_A0_VECTOR
__interrupt void USCI_A0_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USCI_A0_VECTOR))) USCI_A0_ISR (void)
#else
#error Compiler not supported!
#endif
{
i3=0;
switch (__even_in_range(UCA0IV,4)){
//Vector 2 - RXIFG
case 2:
receivedData = USCI_A_UART_receiveData(USCI_A0_BASE);
// if(!(receivedData == transmitData)) // Check value //JS--
// { //JS--
// while(1); //JS--
// } //JS--
check =1;
break;
default: break;
}
}
// -------End of my program
I put a breakpoint inside the __interrupt void USCI_A0_ISR(void) rotine (in the instruction i3=0), in debug mode, and the program never stops here.
I send the signal that I see in RXD and TXD (on the PGA460) respectively:
The last signal is the signal sent by the UART of the PGA to the MSP430, composed of 3 bytes that I never detect in my microcontroller. Why?
Please Help me,
Jose Simoes
