CC2640R2F: Initial Hardware Bringup

Hi Morgan,

Have you ever flashed a CC2640R2F Launchpad with simple peripheral and you verified it working? If not do so to get familiar.

I have lots of experience bringing up custom CC2640R2F 4x4 and 5x5 boards. The original simple peripheral that runs on the launchpad will work with the CC2640R2F custom board with some modifications.

The first 2 modifications you did are correct.

At CC2640R2_LAUNCHL.c CC2640R2_LAUNCHXL_initGeneral() comment out the Board_initHook();, this will cause a hang.

void CC2640R2_LAUNCHXL_initGeneral(void)
{
    Power_init();

    if (PIN_init(BoardGpioInitTable) != PIN_SUCCESS) {
        /* Error with PIN_init */
        while (1);
    }

    /* Perform board-specific initialization */
    Board_initHook();
}

Lastly you need to flash the modified simple peripheral to your custom board and debug it and make sure it passes Simple Peripheral Init. Verify it advertises using IOS LightBlue App or nRF Android Connect App.

With regards to the board files. At Simple Peripheral startup folder you can delete board.c and copy paste Board.h, CC2640R2_LAUNCHXL.h, CC2640R2_LAUNCHXL.c, CC2640R2_LAUNCHXL_fxns.c to the startup folder.

-kel

Morgan Stewart said:

do have to flash the BLE stack lib prj

No.

Hi Morgan,

You need to set that define according to your RF configuration. It seems you are trying to do a single ended RF internal bias. The define is not available. But from what I read here in the forum CC2650EM_4XS define should also work. Upon, review of your single ended RF internal bias circuitry seems to be wrong. However, I am not an expert with the RF circuitry. Better for a TI engineer to comment. Ammar N Ryan Brown1

-kel

Morgan Stewart said:

I just wanted to confirm that that define only affects the rf front end config

Yes.

At one of my projects using single ended RF internal bias, I created a custom define. I will check my code files and get back to you.

-kel

Hi Morgan,

At ble_user_config.h I added code line for define CC2650EM_4IS.

#if defined( CC26XX )

#if defined( CC2650EM_7ID )

  #define RF_FE_MODE_AND_BIAS           ( RF_FE_DIFFERENTIAL |                 \
                                          RF_FE_INT_BIAS)

#elif defined( CC2650EM_5XD ) || defined( CC2650EM_4XD ) || defined( CC2650M5A )

  #define RF_FE_MODE_AND_BIAS           ( RF_FE_DIFFERENTIAL |                 \
                                          RF_FE_EXT_BIAS)

#elif defined( CC2650EM_4XS )

  #define RF_FE_MODE_AND_BIAS           ( RF_FE_SINGLE_ENDED_RFP |             \
                                          RF_FE_EXT_BIAS )

#elif defined( CC2640R2EM_CXS )

  #define RF_FE_MODE_AND_BIAS           ( RF_FE_SINGLE_ENDED_RFN |             \
                                          RF_FE_EXT_BIAS )
#elif defined( CC2650EM_4IS )
  #define RF_FE_MODE_AND_BIAS           ( RF_FE_SINGLE_ENDED_RFP |              \
                                          RF_FE_INT_BIAS )
#else // unknown device package

  #error "***BLE USER CONFIG BUILD ERROR*** Unknown package type!"

#endif // <board>

At CC2640R2_LAUNCHXL.h I set the define CC2650EM_4IS

/*
 *  ============================================================================
 *  RF Front End and Bias configuration symbols for TI reference designs and
 *  kits. This symbol sets the RF Front End configuration in ble_user_config.h
 *  and selects the appropriate PA table in ble_user_config.c.
 *  Other configurations can be used by editing these files.
 *
 *  Define only one symbol:
 *  CC2650EM_7ID    - Differential RF and internal biasing
                      (default for CC2640R2 LaunchPad)
 *  CC2650EM_5XD    – Differential RF and external biasing
 *  CC2650EM_4XS    – Single-ended RF on RF-P and external biasing
 *  CC2640R2DK_CXS  - WCSP: Single-ended RF on RF-N and external biasing
 *                    (Note that the WCSP is only tested and characterized for
 *                     single ended configuration, and it has a WCSP-specific
 *                     PA table)
 *
 *  Note: CC2650EM_xxx reference designs apply to all CC26xx devices.
 *  ==========================================================================
 */

#define CC2650EM_4IS

If you set this define wrong you will have problem with RF. I tested this through experimentation.

I can not remember if CC2650EM_4XS define will also work for single ended RF internal bias.

-kel