CC2640 does not start when using UART functions

Bastian Neumann85

Other Parts Discussed in Thread: CC2640

Hi,

I have the CC2640 running with a BLE central application. Everything works but as soon as I use one of the UART functions the chip does not start up and never reaches main().

static UART_Handle uartHandle;
static UART_Params uartParams;

// ...

static void SimpleBLECentral_init(void)
{
	// ******************************************************************
  // N0 STACK API CALLS CAN OCCUR BEFORE THIS CALL TO ICall_registerApp
  // ******************************************************************
  // Register the current thread as an ICall dispatcher application
  // so that the application can send and receive messages.
  ICall_registerApp(&selfEntity, &sem);

 // ... 

  // Register with bond manager after starting device
  GAPBondMgr_Register(&SimpleBLECentral_bondCB);
  
  LCD_WRITE_STRING("BLE Central", LCD_PAGE0);

  pinHandle = PIN_open(&pinState, BoardGpioInitTable);

  UART_init();

  UART_Params_init(&uartParams);
  uartParams.readDataMode = UART_DATA_BINARY;
  uartParams.writeDataMode = UART_DATA_BINARY;
  uartParams.dataLength = UART_LEN_8;
  uartParams.stopBits = UART_STOP_ONE;
  uartParams.readMode = UART_MODE_CALLBACK;
  uartParams.writeMode = UART_MODE_CALLBACK;
  uartParams.readEcho = UART_ECHO_OFF;
  uartParams.baudRate = 9600;

  uartHandle = UART_open(Board_UART, &uartParams);

I looked around the forum but only found out that I get a BIOS error telling me that I have an hwiStackPeak overrun.

over 9 years ago

0 judahvang over 9 years ago

TI__Mastermind 32475 points

What version of the BLE and TIRTOS are you using?

Judah

0 Bastian Neumann85 over 9 years ago in reply to judahvang

Prodigy 80 points

BLE: ble_cc26xx_2_00_00_42893
RTOS: 2.11.1.09

0 judahvang over 9 years ago

TI__Mastermind 32475 points

Is SimpleBLECentral_init() done in or before main()? If so, you cannot call UART_open() in this function.

UART_open() should be called after BIOS_start() as it requires interrupts to be enabled.

Judah

0 Bastian Neumann85 over 9 years ago in reply to judahvang

Prodigy 80 points

UART_open() is done at the end of SimpleBLECentral_init() which itself is called from the SimpleBLECentral Task function. So this should happen after main and after the BIOS is startet. It doesn't matter where I put the UART_init() or UART_open() function. As soon as it is in the code somewhere the chip does not start up.

It is not a problem with the chip. The UART example from the TIRTOS runs perfectly.

0 judahvang over 9 years ago in reply to Bastian Neumann85

TI__Mastermind 32475 points

Did you ever resolved your problem? Did you try increasing your stack since ROV showed a stack problem?

Judah

0 Bastian Neumann85 over 9 years ago in reply to judahvang

Prodigy 80 points

I did a diff of the Board.c used for the uart example and the Baord.c used for the BLE program. Turns out that in the Board.c changing the the line from

#pragma DATA_SECTION(uartCC26XXObjects, ".const:uartCC26XXObjects") to

#pragma DATA_SECTION(uartCC26XXHWAttrs, ".const:uartCC26XXHWAttrs")

di the trick. I must have gotten them mixed up somehow. It does work fine now.

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CC2640 does not start when using UART functions