uart_echo plus HCT_example causes conflict

As addendum, here is my config setup:

void
Config_c28x(void)
{
  // Disable Protection
  HWREG(SYSCTL_MWRALLOW) =  0xA5A5A5A5;

  // Setup main clock tree for 75MHz - M3 and 150MHz - C28x
  SysCtlClockConfigSet(SYSCTL_SYSDIV_1 | SYSCTL_M3SSDIV_2 | SYSCTL_USE_PLL |
                       (SYSCTL_SPLLIMULT_M & 0x0F));
  // enable serial uart port 0
  SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
  
  // Enable all GPIOs
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOH);
  SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOJ);
 

  //    /* pull up for ECAP */
  GPIOPadConfigSet(GPIO_PORTB_BASE, 0x0A, GPIO_PIN_TYPE_STD_WPU);
  //
  //    /* pull up for McBSP-A */
  GPIOPadConfigSet(GPIO_PORTD_BASE, 0x70, GPIO_PIN_TYPE_STD_WPU);
  //   
  //    /* pull up for UART */
  GPIOPadConfigSet(GPIO_PORTE_BASE, 0x30, GPIO_PIN_TYPE_STD_WPU);
// from echo demo
    // Enable processor interrupts.
    IntMasterEnable();

    // Set GPIO E4 and E5 as UART pins.
    GPIOPinTypeUART(GPIO_PORTE_BASE, GPIO_PIN_4 | GPIO_PIN_5);
    GPIOPinConfigure(GPIO_PE4_U0RX);
    GPIOPinConfigure(GPIO_PE5_U0TX);

    // Configure the UART for 115,200, 8-N-1 operation.
    UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(SYSTEM_CLOCK_SPEED), 115200,
                        (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
                         UART_CONFIG_PAR_NONE));

    // Enable the UART interrupt.
    IntRegister(INT_UART0, UARTIntHandler);
    IntEnable(INT_UART0);
    UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);

  // a "1" gives C28 control of GPIO bits, "0" gives CM3 control
  // PC6&7 - LED2 and LED3 on Concerto card, PH3 & PF2 - LD4&5 on docking station,
  // and PB0, PA6&7 (AFED1,2,3 on AFE board) are config to CM3   
  GPIOPinConfigureCoreSelect(GPIO_PORTA_BASE, 0x3F, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTB_BASE, 0xFE, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTC_BASE, 0x3F, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTF_BASE, 0xFB, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTH_BASE, 0xF7, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTE_BASE, 0xCF, GPIO_PIN_C_CORE_SELECT);

  GPIOPinConfigureCoreSelect(GPIO_PORTD_BASE, 0xFF, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTG_BASE, 0xFF, GPIO_PIN_C_CORE_SELECT);
  GPIOPinConfigureCoreSelect(GPIO_PORTJ_BASE, 0xFF, GPIO_PIN_C_CORE_SELECT);

  // Copy time critical code and Flash setup code to RAM
  // This includes the following ISR functions: Timer0IntHandler(), Timer1IntHandler()
  //  and InitFlash();
  // The  RamfuncsLoadStart, RamfuncsLoadEnd, and RamfuncsRunStart
  // symbols are created by the linker. Refer to the device .cmd file.

  MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);

  // Call Flash Initialization to setup flash waitstates
  // This function must reside in RAM
  FlashInit();

  // Enable processor interrupts.
  //IntMasterEnable();

  // assign S0 to S7 of the shared ram for use by the c28 PLC
  RamMReqSharedMemAccess((S0_ACCESS | S1_ACCESS | S2_ACCESS | S3_ACCESS | S4_ACCESS | S5_ACCESS | S6_ACCESS | S7_ACCESS),SX_C28MASTER);

  // WKIM: in case of debugging, enable this routine
#if 1
  // check if the RAM is init
  // we use the C2M MSG RAM as indication
  // the magic data: 0xdeadbeef
  if (c28_init == 1)
  {
    return;
  }
#endif

  // wait for c28 initialization
  master_ram_init_control_m1_msgram_memories();
  master_ram_init_control_L0_L4_memories();

  // C28 boot from flash
  IPCMtoCBootControlSystem(CBROM_MTOC_BOOTMODE_BOOT_FROM_FLASH);

}

Again, here is the specific code. This appears to conflict with a SWI or something. It's the last line that, when not commented out, will cause the program to hang.

Can anypne provide guidance here?

Thanks

 //    /* pull up for UART */  

 GPIOPadConfigSet(GPIO_PORTE_BASE, 0x30, GPIO_PIN_TYPE_STD_WPU); // from echo demo    

 // Enable processor interrupts.    

 IntMasterEnable();

    // Set GPIO E4 and E5 as UART pins.    

 GPIOPinTypeUART(GPIO_PORTE_BASE, GPIO_PIN_4 | GPIO_PIN_5);    

 GPIOPinConfigure(GPIO_PE4_U0RX);    

GPIOPinConfigure(GPIO_PE5_U0TX);

    // Configure the UART for 115,200, 8-N-1 operation.    

UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(SYSTEM_CLOCK_SPEED), 115200,                       

  (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |        UART_CONFIG_PAR_NONE));

    // Enable the UART interrupt.    

 IntRegister(INT_UART0, UARTIntHandler);    

 IntEnable(INT_UART0);    

 UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);

Are you still running into issues here or did you manage to resolve this?

Brandon,

Yes, I did resolve the problem, thanks,

Pat