CC1312R: Flashing FW via serial bootloader

Igi

Prodigy 200 points

Part Number: CC1312R
Other Parts Discussed in Thread: SYSCONFIG

Hello,

I set in the sysConfig: enable bootloader, enable backdoor DIO, trigger level of bootloader backdoor - active low

I used your example for Linux. I added control of appropriate GPIOs but the program does not continue when the

"Binary file size = 30286
Connecting:"

is shown. I am not sure about controlling the GPIO. the pseudo code (to show how I control them) is following:

// Set BOOTLOADER_BACKDOOR_PIN low

controlGPIO(BOOTLOADER_BACKDOOR_PIN, 0);// I tried both - also PIN high

// Set RESET_PIN low

controlGPIO(RESET_PIN, 0);

// wait a moment

usleep(100000);// 100ms

//release RESET

controlGPIO(RESET_PIN, 1);

over 1 year ago

0 Sid over 1 year ago

TI__Mastermind 20412 points

Hi Igi,

Have you looked at this application note?

https://www.ti.com/lit/an/swra466d/swra466d.pdf

It explains how the serial bootloader is setup.

Regards,

Sid

0 Igi over 1 year ago in reply to Sid

Prodigy 200 points

Hi Sid,

of course I read the document which you mentioned.

Now I tried the prepared application for flashing - sblAppEx.exe (in Windows environment), it also does not work.

My setup was:

I flashed my application (via CCS) which uses the same uart pins as bootloader, there is double blink of green led in the beggining of the program (to evaluate if the program is running or not). Then I connected gpio backdoor pin to GND, after that I did restart of device (connecting pin LPRST to gnd and after while disconnecting the pin). The green led after disconnecting reset did not blink - I suppose the device is in the bootloader mode. (To check it, I had connected the backdoor gpio to 3V3 and did reset again - the device started normaly twice green led blinked). When the device was probably in bootloader mode I run the sblAppEx.exe and I tried all available COM ports, in the second options my choice was 3 | CC13x2/CC26x2. It wrote:

Connecting (COM8 @ 230400 baud) ...
No response from device. Device may not be in bootloader mode. Reset device and try again.
If problem persists, check connection and baud rate.

An error occurred: 4

my sysconfig:

where can be a problem?

Thank you in advance.

0 Igi over 1 year ago in reply to Igi

Prodigy 200 points

I succesfully uploaded the image into CC1312 even in my application (based on SDK) in Linux. But (I hope) last problem is how to prepare the image? When I use export from CCS (I tried several options) it does not work. It works only with the example file blinky_backdoor_select_btn26x2.bin . Which type to choose and do I have to do something further?

0 Marvin Ademi over 1 year ago in reply to Igi

TI__Intellectual 1400 points

Hi Igi,

I will try and reproduce and get back to you when I have some answers

Regards,

Marvin

0 Arthur R☑️ over 1 year ago in reply to Igi

TI__Mastermind 25936 points

Hi Igi,

Looking at the content of blinky_backdoor_select_btn26x2.bin, you have to select the "binary" format.

Indeed, towards the end of the file, you can find lots of empty data and then the CCFG area, which corresponds to the binary format, as explained in that thread: https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1299862/cc1311p3-generating-binary-for-the-cc1311-bootloader/4943918#4943918

Regards,

Arthur

0 Igi over 1 year ago in reply to Arthur R☑️

Prodigy 200 points

Thank you, I tried the "binary (for DSKs)" from the image above. But the size of created file is only 49kB and obviously I am not able to use this file in the update app. Could you write me a more detailed workflow how to do it? You probably only looked at the example file which works but it has not helped me..

0 Arthur R☑️ over 1 year ago in reply to Igi

TI__Mastermind 25936 points

Hi Igi,

I have a more detailed workflow under the following link: https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1240525/faq-cc1352p7-is-ti-wisunfantund-working-with-the-newly-released-beagleplay-yes/4970781#4970781

Let me know if it works for you.

Regards,

Arthur

Sub-1 GHz

Sub-1 GHz forum

CC1312R: Flashing FW via serial bootloader