LAUNCHXL-CC2650: How to use External flash memory in "Simple BLE peripheral" example

Dnyaneshvar s

Intellectual 571 points

Part Number: LAUNCHXL-CC2650

Hello,

I am using LAUNCHXL-CC2650 Rev 1.3.0

BLE SDK 2_02_07_06

CCS7.4

Compiler TI v5.2.6

I want to store large data in External flash memory.(data is about 150KBytes).

My main goal is to add Ext flash functions to simple peripheral project Since in this example I have done changes as per my project requirement.

I am referring to ExtFlash.c and ExtFlash.h files in middleware folder of Simple peripheral project example.

bool ExtFlash_open(void)
{

    bool f;

    hFlashPin = PIN_open(&pinState, BoardFlashPinTable);

    if (hFlashPin == NULL)
    {
        return false;
    }

above function returning false.

Please tell me why its returning False?

over 3 years ago

0 Jan over 3 years ago

TI__Mastermind 42870 points

Hi,

I would suggest referencing the BIM project that is available in the SDK to see how to interact with external flash. This example is able to write/read to an external flash through SPI, so I believe looking through source code for this example will be very helpful in implementing the desired flash read/write functionality.

Best Regards,

Jan

0 Dnyaneshvar s over 3 years ago in reply to Jan

Intellectual 571 points

Hi, Jan

I am trying wth functions from extFlash.c file.

I which

const PIN_Config BoardGpioInitTable[] had spi pins mentioned.

When I commented thse lines,

hFlashpin is returning true now.

But control does not come out of

extFlashPowerStandby(),

In which it stucks in

static int Spi_write(const uint8_t *buf, size_t len)

Function.

Its my humble request. please help me with this

0 Jan over 3 years ago in reply to Dnyaneshvar s

TI__Mastermind 42870 points

Hi,

I would expect the extFlashOpen() to look like the function below:

bool extFlashOpen(void)
{
    bool f;

    bspSpiOpen(SPI_BIT_RATE, BSP_SPI_CLK_FLASH);

    /* GPIO pin configuration */
    IOCPinTypeGpioOutput(BSP_IOID_FLASH_CS);

    /* Default output to clear chip select */
    extFlashDeselect();

    /* Put the part is standby mode */
    f = extFlashPowerStandby();

    if (f)
    {
        f = extFlashVerifyPart();
    }

    if (!f)
    {
        extFlashClose();
    }

    return f;
}

I found that function within the bim_extflash project in the SDK. Can you verify if using that function leads to the function returning success?

Best Regards,

Jan

0 Dnyaneshvar s over 3 years ago in reply to Jan

Intellectual 571 points

Hi, Jan

Thank you for the reply.

I saw bim_extflash code.

Did some changes to the code

and I saw that I can read, erase and write to the external flash in "bim_extflash" project.(image attached for ref.)

But problem is I want this functions working in "Simple BLE Peripheral" code.

Can you please guide me for How can I add all this files and function in "Simple BLE Peripheral" code?

0 Jan over 3 years ago in reply to Dnyaneshvar s

TI__Mastermind 42870 points

Hi,

If you add the exact logic present in the modified bim example to the simple_peripheral example, do you still get errors or unexpected behavior? If so, can you share the error or the return codes of the relevant functions?

Best Regards,

Jan

0 Dnyaneshvar s over 3 years ago in reply to Jan

Intellectual 571 points

Hi Jan,

I have included "C:\xxxx\xxxxx\workspace_v7\simple BLE peripheral modified_app\ExternalFlash" path in include option and #include "ext_flash.h"

in main.c.

My all errors are gone.But its still not working

please guide

+1 Dnyaneshvar s over 3 years ago in reply to Jan

Intellectual 571 points

Hi Jan,

when I debugged using single stepping I came to know that

control was stopping in function shown in below code snippet

  /* SPI power */
  ROM_PRCMPeripheralRunEnable(PRCM_PERIPH_SSI0);

/* See bsp_spi.h file for description */
void bspSpiOpen(uint32_t bitRate, uint32_t clkPin)
{
//#define BOOT_LOADER
#ifdef BOOT_LOADER
  /* GPIO power && SPI power domain */
  PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL);
  while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL)
         != PRCM_DOMAIN_POWER_ON);

  /* GPIO power */
  PRCMPeripheralRunEnable(PRCM_PERIPH_GPIO);
  PRCMLoadSet();
  while (!PRCMLoadGet());
#endif

  /* SPI power */
  ROM_PRCMPeripheralRunEnable(PRCM_PERIPH_SSI0);
  PRCMLoadSet();
  while (!PRCMLoadGet());

  /* SPI configuration */
  SSIIntDisable(BLS_SPI_BASE, SSI_RXOR | SSI_RXFF | SSI_RXTO | SSI_TXFF);
  SSIIntClear(BLS_SPI_BASE, SSI_RXOR | SSI_RXTO);
  ROM_SSIConfigSetExpClk(BLS_SPI_BASE,
                         BLS_CPU_FREQ, /* CPU rate */
                         SSI_FRF_MOTO_MODE_0, /* frame format */
                         SSI_MODE_MASTER, /* mode */
                         bitRate, /* bit rate */
                         8); /* data size */
  ROM_IOCPinTypeSsiMaster(BLS_SPI_BASE, BSP_SPI_MISO, BSP_SPI_MOSI,
                          IOID_UNUSED /* csn */, clkPin);
  SSIEnable(BLS_SPI_BASE);

  {
    /* Get read of residual data from SSI port */
    uint32_t buf;

    while (SSIDataGetNonBlocking(BLS_SPI_BASE, &buf));
  }

}

I was getting as error as "Cortex_M3_0: Breakpoint Manager: Error enabling this function: There is no AET resource to support this job".

Then I saw some code part which was in gray area.

#ifdef BOOT_LOADER
  /* GPIO power && SPI power domain */
  PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL);
  while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH | PRCM_DOMAIN_SERIAL)
         != PRCM_DOMAIN_POWER_ON);

  /* GPIO power */
  PRCMPeripheralRunEnable(PRCM_PERIPH_GPIO);
  PRCMLoadSet();
  while (!PRCMLoadGet());
#endif

Then I defined macro "#define BOOT_LOADER"

after that my problem solved.

I tested with 10 bytes for Erase, Write and Read operations.

It is working Now.

But I have question that Is it it right way I am doing this thing?

Should I I define macro "#define BOOT_LOADER" or is there any other better way?

Please guide

0 Dnyaneshvar s over 3 years ago in reply to Jan

Intellectual 571 points

HI Jan,

thank you so much for the support you provided me to solve this problem

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LAUNCHXL-CC2650: How to use External flash memory in "Simple BLE peripheral" example