msp430f2618 UART

hello one more time,

I wrote you solution

http://e2e.ti.com/support/microcontrollers/msp430/f/166/p/344965/1206053.aspx#1206053

what is wrong ?

Hi Lukasz,

I am able to receive only one character but i want to receive multiple characters from the file how can we implement it?

Please help considering my previous post for receiving multiple character from a file.

ok I wrote code for you,

MSP430 recived data until end sign (in this example CR-0x0d)

or until data amout will be equal 90 (you can modyfied this code)

#include <msp430.h>

#define  MAX_REC_DATA_SIZE  (unsigned char)    100

#define  MAX_FILE_SIZE      (unsigned char)     90  
#define  END_FILE_SIGN      (unsigend char)    0x0d


volatile unsigned char index = 0;
unsigned char     recv_file_data[MAX_REC_DATA_SIZE];

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  if (CALBC1_1MHZ==0xFF)                    // If calibration constant erased
  {                                        
    while(1);                               // do not load, trap CPU!! 
  }
  DCOCTL = 0;                               // Select lowest DCOx and MODx settings
  BCSCTL1 = CALBC1_1MHZ;                    // Set DCO
  DCOCTL = CALDCO_1MHZ;
  P3SEL = 0x30;                             // P3.4,5 = USCI_A0 TXD/RXD
  UCA0CTL1 |= UCSSEL_2;                     // SMCLK
  UCA0BR0 = 6;                              // 1MHz 9600
  UCA0BR1 = 0;                              // 1MHz 9600
  UCA0MCTL = UCBRF3 + UCOS16;               // Modln UCBRSx=1, over sampling
  UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**
  IE2 |= UCA0RXIE;                          // Enable USCI_A0 RX interrupt

 while(1)
 {
      __bis_SR_register(LPM0_bits + GIE);   // Enter LPM0, interrupts enabled
      
      __no_operation();                     // <- set breakpoint here
      index = 0;                            // clear index
                                            // work with recived data

  }

}
#pragma vector=USCIAB0RX_VECTOR
__interrupt void USCI0RX_ISR(void)
{
  unsigned char sign;
  
  sign = UCA0RXBUF;
  
   if(index < MAX_REC_DATA_SIZE)	
                  recv_file_data[index ] = sign;

   
   if(sign == END_FILE_SIGN || index == MAX_FILE_SIZE)
                __bic_sr_register_on_exit(LPM0_bits);

    index += 1;
}

HI Lukasz,

I am getting this error:

Warning[Pe223]: function "__bic_sr_register_on_exit" declared implicitly E:\MSP430F2618\MSP430F2618_flash_SPI\UART_multi_RX.c 53
Linking
Error[e46]: Undefined external "__bic_sr_register_on_exit" referred in UART_multi_RX ( E:\MSP430F2618\MSP430F2618_flash_SPI\Debug\Obj\UART_multi_RX.r43 )
Error while running Linker

Total number of errors: 1
Total number of warnings: 1

sorry I wrote code in notepad :)

__bic_SR_register_on_exit(LPM0_bits)

will be ok,

Hi Lukasz,

I am really happy that i am able to receive the data.

I have few things to know from this example:

1. can we use it without a wile(1) if we know size of the file?

2. can we implement this without ISR vector means using polling?

3. i have file with hexa file, each byte is separated by a comma does this work?

regards.

3 times YES, code is below,

you can set breakpoint (look in code)

and you can check all data in recived buffor,

#include <msp430.h>
#define  MAX_REC_DATA_SIZE  (unsigned int)    100


unsigned int 	  index = 0;
unsigned char     recv_file_data[MAX_REC_DATA_SIZE];

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  if (CALBC1_1MHZ==0xFF)                    // If calibration constant erased
  {                                       
    while(1);                               // do not load, trap CPU!!
  }
  DCOCTL = 0;                               // Select lowest DCOx and MODx settings
  BCSCTL1 = CALBC1_1MHZ;                    // Set DCO
  DCOCTL = CALDCO_1MHZ;
  P3SEL = 0x30;                             // P3.4,5 = USCI_A0 TXD/RXD
  UCA0CTL1 |= UCSSEL_2;                     // SMCLK
  UCA0BR0 = 6;                              // 1MHz 9600
  UCA0BR1 = 0;                              // 1MHz 9600
  UCA0MCTL = UCBRF3 + UCOS16;               // Modln UCBRSx=1, over sampling
  UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**

//
  while(index < MAX_REC_DATA_SIZE )	
  {
	while (!(IFG2&UCA0RXIFG)); 
	recv_file_data[index ] = UCA0RXBUF;
	index += 1;
   }


  // your data are recived
  __no_operation();                     // <- set breakpoint here
 
  while(1){};
}

Hi Lukasz,

Thank you very much for help. Every thing is working fine.

Regards.