TMS570LC4357: Transmission and Reception using SCI

Hi,

1. I suggest to use interrupt mode for SCI receive

2. Does Terminal (Putty) have the same SCI settings? 

I don't see any instruction to increase the counter1, and don't think "char(counter1)" is correct.  --> the correct one is (char)(counter1++)

Please try the SCI example code from HALCoGen help

Thanks for the prompt response Wang. I could make some progress on the same. Please find my code snippet below.

/* USER CODE BEGIN (0) */
#include "HL_sci.h"
/* USER CODE END */

/* Include Files */

#include "HL_sys_common.h"

/* USER CODE BEGIN (1) */
char text_send[] = "Are you there?? \n \r";
char resp1_send[] = "Yes, I'm!! \n \r";
char resp2_send[] = "Nope, I'm not!! \n \r";
static unsigned char command;
unsigned int * data1;
static int count1 = 0;
/* USER CODE END */

/** @fn void main(void)
*   @brief Application main function
*   @note This function is empty by default.
*
*   This function is called after startup.
*   The user can use this function to implement the application.
*/

/* USER CODE BEGIN (2) */
/* USER CODE END */

int main(void)
{
/* USER CODE BEGIN (3) */
    _enable_IRQ();

    sciInit();
    sciSend(sciREG1, strlen(text_send), text_send);
    //sciSend(sciREG1, 21, (unsigned char *)"Please press a key!! \r\n");
    //sciReceive(sciREG1, 1, (unsigned char *)&command);
    sciReceive(sciREG1, 4, &data1);

    while(1);

/* USER CODE END */

    return 0;
}


/* USER CODE BEGIN (4) */
void sciNotification(sciBASE_t *sci, uint32 flags)
{

    /*if (command == 'y')
        //printf("Input is %s", y);
        sciSend(sciREG1, strlen(resp1_send), resp1_send);
    else if (command == 'n')
        sciSend(sciREG1, strlen(resp2_send), resp2_send);
    else
        //printf("Input is Nope");
        //sciSend(sciREG1, strlen(resp2_send), resp2_send);
        //sciSend(sci, 1, (unsigned char *) &command);
        sciSend(sci, 4, count1);

    count1++;*/


    if (strcmp(*data1, "yeah"))
        //printf("Input is %s", y);
        sciSend(sciREG1, strlen(resp1_send), resp1_send);
    else if (strcmp(*data1, "nope"))
        sciSend(sciREG1, strlen(resp2_send), resp2_send);
    else
        //printf("Input is Nope");
        //sciSend(sciREG1, strlen(resp2_send), resp2_send);
        //sciSend(sci, 1, (unsigned char *) &command);
        sciSend(sciREG1, strlen(*data1), *data1);

    sciSend(sciREG1, strlen(*data1), *data1);
    sciReceive(sci, 1, (unsigned char *) &command);
}

void esmGroup1Notification(int bit)
{
    return;
}

void esmGroup2Notification(int bit)
{
    return;
}
/* USER CODE END */

I could use interrupt to receive the data. Progress made in line with my asked queries is as follows:

1. I can now receive the data.
2. using the received data, I can make required execution of commands.

However, in line with my previous queries, I've been facing two issues:

1. I still am not able to send the counter value over UART.
2. I'm not able to receive and process the string input. for example, if you look at the code snippet provided, I can receive a single character and process the same (commented out in the code). however, while I define the integer pointer and use the sciReceive, I'm not able to proceed in the similar manner. Can you please look at it and share your thoughts? Basically I want to carry out the same thing as I mentioned in point 2 above, but instead of character, I want to use the strings.

Thanks,

H C Trivedi

Hello,

To print a number, you need to convert the number to string or character first using the ASCII table. I wrote a function for you as a reference:

void UART_send32BitData(sciBASE_t *sci, uint32_t data)
{
     uint8_t c_get ;
     volatile int i = 0;
     for( i = 8 ; i > 0 ; i-- )
     {
          c_get = (data >> 28) & 15 ;
          if( c_get > 9 )
               c_get += 7 ;
          c_get += 48 ;

          while ((sci->FLR & SCI_TX_INT) == 0) { /* wait */ };
          sci->TD = c_get;
          data = data << 4 ;
     }
}

Thanks for the prompt response Wang. I'm working on the workaround you suggested and I'll get back to you in a while.

Regards,

H C Trivedi