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Matt Gordon

Matt Gordon is a senior applications engineer at Micrium.  He began his career developing device drivers, kernel ports, and example applications for Micrium's customers.  Drawing on this experience, Matt has written multiple articles on embedded software.  He also heads Micrium's training program and regularly teaches classes on real-time kernels and other embedded software components.  Matt holds a bachelor's degree in computer engineering from Georgia Tech, Georgia in the USA.


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  • Hey Matt,

    I am using MSP430 from TI . I am trying to send data through UART to PC from every task. However its not working. Transmit Buffer is loading with data but i am not able to receive data in my PC.

    Here is example of my code:

    i have called  the uart setup function in main function.

     

    void uart_setup()

    {

      OS_ERR err;

      OSSemPost(&MySem,OS_OPT_POST_1,&err);

      P3SEL = 0x30;                         

      UCA0CTL1 |= UCSWRST;           

      UCA0CTL1 |= UCSSEL_2;                     // SMCLK

      UCA0BR0 = 9;                              // 1MHz 115200 (see User's Guide)

      UCA0BR1 = 0;                              // 1MHz 115200

      UCA0MCTL |= UCBRS_1 + UCBRF_0;            // Modulation UCBRSx=1, UCBRFx=0

      UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**

      UCA0IE |= UCRXIE;                         // Enable USCI_A0 RX interrupt

    }

     

     

    void  AppTask1 (void *p_arg)

    {

        OS_ERR  err;

       while (1) {

           /

            send('1');

              OSTimeDlyHMSM(0u, 0u, 0u, 10u,

                          OS_OPT_TIME_HMSM_STRICT,

                          &err);

     

     

        }

    }

     

    // and my send function is like this:

    void send(char a)

    {

     

      while (!(UCA0IFG&UCTXIFG));             // USCI_A0 TX buffer ready?

        UCA0TXBUF = a;

    }

Reply

  • Hey Matt,

    I am using MSP430 from TI . I am trying to send data through UART to PC from every task. However its not working. Transmit Buffer is loading with data but i am not able to receive data in my PC.

    Here is example of my code:

    i have called  the uart setup function in main function.

     

    void uart_setup()

    {

      OS_ERR err;

      OSSemPost(&MySem,OS_OPT_POST_1,&err);

      P3SEL = 0x30;                         

      UCA0CTL1 |= UCSWRST;           

      UCA0CTL1 |= UCSSEL_2;                     // SMCLK

      UCA0BR0 = 9;                              // 1MHz 115200 (see User's Guide)

      UCA0BR1 = 0;                              // 1MHz 115200

      UCA0MCTL |= UCBRS_1 + UCBRF_0;            // Modulation UCBRSx=1, UCBRFx=0

      UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**

      UCA0IE |= UCRXIE;                         // Enable USCI_A0 RX interrupt

    }

     

     

    void  AppTask1 (void *p_arg)

    {

        OS_ERR  err;

       while (1) {

           /

            send('1');

              OSTimeDlyHMSM(0u, 0u, 0u, 10u,

                          OS_OPT_TIME_HMSM_STRICT,

                          &err);

     

     

        }

    }

     

    // and my send function is like this:

    void send(char a)

    {

     

      while (!(UCA0IFG&UCTXIFG));             // USCI_A0 TX buffer ready?

        UCA0TXBUF = a;

    }

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