CCS/CC2640R2F: LED blink code not working on PCB with cc2640r2f MCU

smriti asthana

Part Number: CC2640R2F

Tool/software: Code Composer Studio

I made one code of led blink for my pcb. I changed the board files according to my PCB. the pcb led is active low so i made the following configuration in pin configuration table.

const PIN_Config BoardGpioInitTable[] = {

CC2640R2_LAUNCHXL_DIO1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW| PIN_PUSHPULL | PIN_DRVSTR_MAX, /* LED initially off */

PIN_TERMINATE
};

to make my led glow initially.

my gpio configuration is:

GPIO_PinConfig gpioPinConfigs[] = {
/* Input pins */
//GPIOCC26XX_DIO_01 | GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_RISING, /* Button 0 */
// GPIOCC26XX_DIO_14 | GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_RISING, /* Button 1 */

/* Output pins */
GPIOCC26XX_DIO_01 | GPIO_CFG_OUT_STD | GPIO_CFG_OUT_STR_HIGH | GPIO_CFG_OUT_LOW,
//GPIOCC26XX_DIO_06 | GPIO_CFG_OUT_STD | GPIO_CFG_OUT_STR_HIGH | GPIO_CFG_OUT_LOW,
};

The led keeps glowing and is not blinking i am not able to understand where the mistake is.

Please help me with this.

urgently required.

Smriti

over 8 years ago

0 Fredrik K over 8 years ago

TI__Guru** 106705 points

Hi Smriti,

Take a look at this example: dev.ti.com/.../

And this training (especially task 1): dev.ti.com/.../

Cheers,
Fredrik

0 smriti asthana over 8 years ago in reply to Fredrik K

Expert 2640 points

Hi Fredrik,

Thanks but whatever is given in example i have read all that already. mine is new PCB the same code was working fine in launchpad. in PCB i have used RSM packge and in launchpad there was RGZ package. Is tihs because of this difference or there is some other problem.

Smriti

0 smriti asthana over 8 years ago in reply to Fredrik K

Expert 2640 points

Hi fredrik,

I also wanted to ask, is it required to put external crystal on PCB, how can i check whether my code is dependent on external or internal crystal.

Smriti

0 Fredrik K over 8 years ago in reply to smriti asthana

TI__Guru** 106705 points

Hi Smriti,

For CPU operation no external crystal is required. For the radio an external 24 MHz crystal is needed. For BLE you must configure the stack as described in the BLE Stack User's Guide if you are not using 32 kHz crystal.

Refer to the documentation for details.

Fredrik

0 smriti asthana over 8 years ago in reply to Fredrik K

Expert 2640 points

Hi Fredrik,

I am downloading LED blink code on my PCB, do I need any external crystal for that

Smriti

Bluetooth®︎

Bluetooth forum

CCS/CC2640R2F: LED blink code not working on PCB with cc2640r2f MCU