CC2640R2F: Unable to enter Bootloader and flash using UART interface

Mahesh H M

Prodigy 180 points

Part Number: CC2640R2F
Other Parts Discussed in Thread: CC2640,

I am trying to flash the CC2640R2 using UART but it is giving the error as attached in the image.

I am using a TIL-232R-3V3 cable for UART level translation

I have modified the CCFG file and configured BL pin as DIO 12. Below is the code snippet

//#####################################
// Bootloader settings
//#####################################

#ifndef SET_CCFG_BL_CONFIG_BOOTLOADER_ENABLE
//#define SET_CCFG_BL_CONFIG_BOOTLOADER_ENABLE 0x00 // Disable ROM boot loader - Mahesh
#define SET_CCFG_BL_CONFIG_BOOTLOADER_ENABLE 0xC5 // Enable ROM boot loader - Mahesh

#endif

#ifndef SET_CCFG_BL_CONFIG_BL_LEVEL
#define SET_CCFG_BL_CONFIG_BL_LEVEL 0x0 // Active low to open boot loader backdoor - Mahesh
//#define SET_CCFG_BL_CONFIG_BL_LEVEL 0x1 // Active high to open boot loader backdoor - Mahesh
#endif

#ifndef SET_CCFG_BL_CONFIG_BL_PIN_NUMBER
#define SET_CCFG_BL_CONFIG_BL_PIN_NUMBER 0x0C // DIO number for boot loader backdoor - Mahesh
#endif

#ifndef SET_CCFG_BL_CONFIG_BL_ENABLE
#define SET_CCFG_BL_CONFIG_BL_ENABLE 0xC5 // Enabled boot loader backdoor - Mahesh
//#define SET_CCFG_BL_CONFIG_BL_ENABLE 0xFF // Disabled boot loader backdoor - Mahesh
#endif

Please let me know how if I have missed any steps for the same

Regards

Mahesh H M

over 7 years ago

0 YiKai Chen over 7 years ago

Guru 735695 points

Try to do mass erase and test again.

0 Mahesh H M over 7 years ago in reply to YiKai Chen

Prodigy 180 points

I tried this as well but it still does not work.

(1)One observation was that CCFG file has BL GPIO as DIO12 configured and when shorted with GND the board does not boot, so it looks like the board can enter boot loader but only UART download does not work.

Any specific UART cable to be used?

(2)Can you share the path of CCFG file, just to make sure if I am modifying the right file.

Regard

Mahesh H M

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to Mahesh H M

TI__Guru 58425 points

Hi Mahesh,

Are you using a LaunchPad or custom board? In either case, the UART must be connected to DIO2 and DIO3, are this the case?

0 Mahesh H M over 7 years ago in reply to IUsedToBeARealPerson (M-W)

Prodigy 180 points

I have connected the UART lines to DIO2 and DIO3 as these are the BOOTloader serial pins.

Also for BL_EN I am using DIO12.

Regards

Mahesh H M

0 Mahesh H M over 7 years ago in reply to IUsedToBeARealPerson (M-W)

Prodigy 180 points

it is CC2640 Launchpad from TI

0 YiKai Chen over 7 years ago in reply to Mahesh H M

Guru 735695 points

Try to click mouse right button on CC2640R2F which is under COM65 to connect the device first and download again.

0 Mahesh H M over 7 years ago in reply to YiKai Chen

Prodigy 180 points

I tried to connect but still get the failure message

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to Mahesh H M

TI__Guru 58425 points

Are you able to connect with JTAG to the device and read out the programmed CCFG?
If there is already a valid image in the device, you will have to manually boot the device into the bootloader via the backdoor before connecting in Flash programmer 2.

If you have a completely clean device, you should be able to connect to it right away. For example doing a force mass erase using JTAG and then programming via the serial bootloader.

0 Mahesh H M over 7 years ago in reply to IUsedToBeARealPerson (M-W)

Prodigy 180 points

Hi

I am able to connect using JTAG.
How can I check programmed CCFG from JTAG?

I am sure that the device does not enter the normal boot with BL_EN pin low . I have tried mass erase using JTAG and then flash using serial but it didnot work

Regards
Mahesh H M

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to Mahesh H M

TI__Guru 58425 points

Hi Mahesh,

You can go to the "Edit" view and choose to read out the CCFG section of the flash using JTAG.
If the mass erase have been done prior to reading out the section, it should be blank with a few "C5" close to the end.

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to IUsedToBeARealPerson (M-W)

TI__Guru 58425 points

Closing this thread due to inactivity. Feel free to open a new thread (Ask a related question) if you are still seeing the issue or simply continue this thread.

0 IUsedToBeARealPerson (M-W) over 7 years ago in reply to IUsedToBeARealPerson (M-W)

TI__Guru 58425 points

I see you rejected me closing this thread due to inactivity, could you feedback on the CCFG section after erase?

0 Mahesh H M over 7 years ago in reply to IUsedToBeARealPerson (M-W)

Prodigy 180 points

Hi

Sorry for the delay. I was able to flash using UART after mass forced erase and removing the TX and RX jumpers shorted to XDS110 UART lines.

Thanks for all the help

Bluetooth®︎

Bluetooth forum

CC2640R2F: Unable to enter Bootloader and flash using UART interface