LAUNCHXL-CC2650: extFlashOpen() fail in CC2650 Simple BLE peripheral example

Hello,

Thanks for creating a separate thread on this and helping keep our forums clean for readability.

The call that is failing looks like a failure to open Board_SPI_FLASH_CS. Has this pin already been opened somewhere else in your application? In other words, have you made any modifications to the example project?

Similar to the last step, perhaps you can try by enabling the OAD build configuration on this project as well to see if you have success. Although in this case, I'm not sure this will fix the issue.

Hello,

Similar to the last step, perhaps you can try by enabling the OAD build configuration on this project as well to see if you have success. Although in this case, I'm not sure this will fix the issue.

I tried by selecting with option right click on project Name then, Build configuration-> Set Active -> Flashonly_OAD_ExtFlash.

But this did not worked.

The call that is failing looks like a failure to open Board_SPI_FLASH_CS. Has this pin already been opened somewhere else in your application? In other words, have you made any modifications to the example project?

yes. I have made changes to the code.

Before main(), this is the code.

#define EPD_BUSY_PIN PIN_ID(12)
#define EPD_RST_PIN PIN_ID(6)
#define EPD_DC_PIN PIN_ID(7)
#define EPD_SCK_PIN PIN_ID(10)
#define EPD_MOSI_PIN PIN_ID(9)
#define EPD_CS_PIN PIN_ID(14)

PIN_Config epdPinTable[] = {
EPD_CS_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MAX,
EPD_MOSI_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW| PIN_PUSHPULL | PIN_DRVSTR_MAX,
EPD_SCK_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
EPD_DC_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW  | PIN_PUSHPULL | PIN_DRVSTR_MAX,
EPD_RST_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,
EPD_BUSY_PIN | PIN_INPUT_EN | PIN_PULLUP,
PIN_TERMINATE };

In the main(), this is the code

My e-paper display work fine with above code

//    PIN_init(BoardGpioInitTable);
      Board_initGeneral();

    /* Open LED pins */
    epdPinHandle = PIN_open(&epdPinState, epdPinTable);
    if (!epdPinHandle)
    {
        System_abort("Error initializing board EPD pins\n");
        System_flush();
    }

Please guide

Hi,

Can you clarify if you are using a Launchpad, or an STK? I see that you have mentioned Launchpad in the original post. If you are using an STK, then that pin by default uses PIN 14 for the SPI FLASH CS. This could be why you are unable to open the flash.

Hello,

As I have already mentioned in my question on the top, I am using LAUNCHXL-CC2650 Rev 1.3.0.

Which is using 

/* SPI */
#define Board_SPI_FLASH_CS IOID_20
#define Board_SPI0_MOSI IOID_9
#define Board_SPI0_CLK IOID_10

So I guess its not the CS pin causing problem.

Is is due to the 

#define EPD_SCK_PIN PIN_ID(10)
#define EPD_MOSI_PIN PIN_ID(9)

which are also use by 

Board_SPI0_MOSI IOID_9
Board_SPI0_CLK IOID_10

should I use different pins for E-paper display?

Will it solve my problem of "hFlashPin is also returning false" ?

Hello, Ammar

I have an update.

const PIN_Config BoardGpioInitTable[] = {

    Board_RLED   | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,         /* LED initially off             */

    Board_GLED   | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,         /* LED initially off             */

    Board_BTN1   | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS,            /* Button is active low          */

    Board_BTN2   | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_BOTHEDGES | PIN_HYSTERESIS,            /* Button is active low          */

//    Board_SPI_FLASH_CS | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MIN,  /* External flash chip select    */
    Board_UART_RX | PIN_INPUT_EN | PIN_PULLDOWN,                                              /* UART RX via debugger back channel */
    Board_UART_TX | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL,                        /* UART TX via debugger back channel */
//    Board_SPI0_MOSI | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master out - slave in */
//    Board_SPI0_MISO | PIN_INPUT_EN | PIN_PULLDOWN,                                            /* SPI master in - slave out */
//    Board_SPI0_CLK | PIN_INPUT_EN | PIN_PULLDOWN,                                             /* SPI clock */
    PIN_TERMINATE
};

SPI pins were mentioned in by default in code as shown above.

So I commented them as shown in above code snippet.

So now "hFlashPin is not returning false.

/* Make sure SPI is available */
f = Spi_open(SPI_BIT_RATE);

System_printf("Value of f=%d\n",f);
System_flush();

this also printing

f=1;

means Spi_open(SPI_BIT_RATE); is successful .

But control does not come out of function,        

f = extFlashPowerStandby();            (IMPORTANT)

When I debug using single stepping,

This function gets called after

static int Spi_write(const uint8_t *buf, size_t len)
{
SPI_Transaction masterTransaction;

masterTransaction.count = len;
masterTransaction.txBuf = (void*)buf;
masterTransaction.arg = NULL;
masterTransaction.rxBuf = NULL;

return SPI_transfer(spiHandle, &masterTransaction) ? 0 : -1;
}

------------------------------------------------------------------------------------------

THEN

bool SPI_transfer(SPI_Handle handle, SPI_Transaction *transaction)
{
return (handle->fxnTablePtr->transferFxn(handle, transaction));//here is the problem
}

So actually Control does not come out of "SPI_transfer" function.

Please help me to get this thing working, we have our project deadline