CCS v6

Hello Admir,

Using the term "program does not work" is very broad, can you define exactly what part of your code or which peripheral is not working? What symptom proves that operation is not as expected? You need to isolate the code/peripheral that is not working correctly in order to gain insight on what is wrong with it. Stepping over code takes a lot longer than quickly running though the code and it makes me think that timing is an issue here, perhaps not giving time for a clock or LFXT time to settle before beginning main operation.

Regards,
Ryan

Hello Ryan,

I'm using UART1 -> MSP430FG4618. My source code is here (I'm using SPI to communicate with RFID board):

void main(void) {
long int i;
volatile unsigned int RFID_AKTIV = 0;
volatile unsigned int RFID_ECHO = 0;
volatile unsigned int RFID_PROT = 0;
volatile unsigned int PROTOKOL_S = 0;
volatile unsigned int k=0x00;
volatile unsigned OL=0x00;
volatile int daten=0x00;
volatile unsigned int test=0;
volatile unsigned int test2=0;
volatile unsigned int test3=0;

WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer
FLL_CTL0 |= XCAP14PF; // Configure load caps

initLCD_A(); // Initialize LCD_A
dispAllLCDSegs(); //Test
//for(i=10000;i>0;i--);
clrLCD(); //Leeren
dispChar(0,9);

// Wait for xtal to stabilize
do
{
IFG1 &= ~OFIFG; // Clear OSCFault flag
for (i = 0x47FF; i > 0; i--); // Time for flag to set
}
while ((IFG1 & OFIFG)); // OSCFault flag still set?

for(i=2100;i>0;i--); // Now with stable ACLK, wait for
/***********************************************************************************/
/*Port Initialisierung*/
//LED -> zur Info..LED wird angemacht, wenn ECHO in Ordnung ist.
P2DIR |=BIT1;
P2OUT &=~BIT1;
/*****SPI Initialisierung*****/
//CS
P4OUT |= BIT6;
P4DIR |= BIT6;
//IRQ
P4OUT |=BIT2;
P4DIR |=BIT2;
//MOSI
P4DIR |= BIT3;
P4SEL |= BIT3;
//MISO
P4DIR &=~BIT4;
P4SEL |= BIT4;
//CLK
P4DIR |= BIT5;
P4SEL |= BIT5;
/* USART1 Control Register*/
//CHAR - 8 bits, SYNC - SPI mode, MM - Master, SWRST enable Veränderung
U1CTL = MM+SWRST;
U1CTL |= CHAR;
U1CTL |= SYNC;
U1CTL |= SPB;
/*Transmit Control Register*/
//CKPL - Clock Polarity, SSEL1 - ACLK Taktgeber, STC STC Enable
U1TCTL &= ~CKPL;
U1TCTL |= CKPH;
U1TCTL |= SSEL1;
U1TCTL |= STC;
U1TCTL |= URXSE;
/*Baud Rate*/
U1BR0 = 0x080;
U1BR1 = 0x000;
U1MCTL = 0x000;
/*Modul anmachen*/
//USPIE1 - Enable URXE1 und UTXE1
ME2 |= USPIE1;
/*zum Schluss*/
U1CTL &= ~SWRST;
/*****************************************************SPI angemacht*/
__bis_SR_register(GIE);
/*RFID Click aktivieren*/
RFID_AKTIV = aktivazion();
/*RFID Click ECHO*/
while(RFID_ECHO == 0){
i=0;


//ECHO --->
P4OUT &= ~BIT6; //CS
while (!(IFG2 & UTXIFG1));
U1TXBUF = 0x00;
while (!(IFG2 & UTXIFG1));
U1TXBUF = 0x55;
P4OUT |= BIT6; // CS
/*******************/

//Pooling
P4OUT &=~BIT6; //CS
while(k!=0x01 & i<10){
while (!(IFG2 & UTXIFG1));
U1TXBUF = 0x03;
k=((U1RXBUF & 0x08)>>3) & 0x01;
i++;
}
k=0;
P4OUT |=BIT6; //CS

//Lesen
P4OUT &= ~BIT6; //CS
while (!(IFG2 & UTXIFG1));
U1TXBUF = 0x02;
while (!(IFG2 & UTXIFG1));
U1TXBUF = 0x03;
P4OUT |= BIT6; // CS
while (!(IFG2 & URXIFG1));
daten = U1RXBUF;
if(daten==0x55 || daten ==0x81){
P2OUT ^=BIT1; //ECHO in Ordnung
}
RFID_AKTIV = aktivazion();
}
RFID_PROT = protokoll();
while(RFID_PROT == 0)
RFID_PROT = protokoll();
/*--------------------------------------------------------------------------------------*/
}

Regards,
Admir

Admir,

If you can, please put a breakpoint before the xtal stabilization loop and run your code to this breakpoint, allow the breakpoint to stop the MCU, then resume operation. Optionally step up to this breakpoint before resuming operation. Also perform this test with a breakpoint placed after the stable ACLK for loop and report if any of these tests alter your results.

Your code set up is quite strange and this could be a factor in the issue described. Usually variables are defined outside of the main function and I do not see an inclusion of msp430.h. Also, where is your main loop located to ensure that the main function is not exited at any given time? Your program should not be allowed to leave main.

Regards,
Ryan

Hello Ryan,

I have tested with breakpoints but it is the same. Without success! In "Board.h" I have included "msp430xG46x.h".

Regards,
Admir