Telink TLSRGSOCBK56B EVK Not Flashing in Offline Mode (SW1 Does Nothing)

TeliUser

Hi!

I would love to use my programmer as a standalone device, but I can't seem to actually flash anything without using the BDT app on my computer: The SW1 button does nothing.I'm trying to use my programmer as a standalone programmer, with my binary file already loaded in. I would like to just connect it to my target chip, and then press a button to flash the chip.
Loading the binary onto my programmer seems to go fine (done in the "Telink Burning and Debugging Tool (BDT)" version 5.8.2), but I can't seem to actually flash anything without using the BDT app on my computer: The SW1 button does nothing.

Details:

        • Programmer: Telink TLSRGSOCBK56B (Burning EVK, no OLED screen).

        

        • Target Chip: TLSR8251F512ET32 (selected as B80 in Telink BDT).

        

        •         Power Source:

        •         When connected to PC via USB , the blue LED lights up

        •         When connected to a USB power adapter (no PC), all 4 LEDs turn on , and nothing happens.

        •         Connections to Target Device:

        •         EVK SWM → TLSR8251 SWS (debug pin)

        •         EVK GND → Target GND

        • Target is battery-powered (I cannot disconnect it physically).        

        •         EVK Reset Pin (RST) is NOT connected to target. I also cannot manually reset it (can't reach it).

What Works

        •         Flashing works via BDT GUI when the EVK is connected to a PC.

        •         Firmware loads correctly into the EVK under the “EVK Offline Tool → User Bin” (selected as B80).

        •         EVK mode can be changed using SW2 (toggles between green and blue LED).

        •         Pressing SW1 does nothing when trying to flash in offline mode.

What Doesn't Work

        1.         SW1 does not start offline flashing.

        •         When pressing SW1 , nothing happens (no LED change, no flashing activity).

        • Tried holding SW1 for different durations (short press, long press).        

        • Tried pressing SW2 first , then SW1—still no effect.

•  Tried making led blue light up then power cycling first - no difference

        2.         All LEDs light up when powered via USB adapter (no PC).

        •         When connected to a PC, only 1 LED is ON (Blue or Green, depending on mode).

        •         But when plugged into a USB power adapter , all 4 LEDs turn ON and remain lit.

        3.         Target device does not seem to reset or enter programming mode.

admin

You can refer to the following document: https://doc.telink-semi.cn/doc/en/openplatform/Mini_Burning_EVK/
The document only describes the use of web tools, in fact, the Windows BDT tool also supports offline download functionality

TeliUser

Thank you for the response!

For me the offline button does not show up in the web interface. However, I did manage to use the EVK Offline Tool in the windows BDT.
The problem is that the programmer does not actually program my devices. So after I have loaded the binary onto the programmer, I connect the programmer to my device (with blue LED on) and press SW1, but nothing happens.

admin

TeliUser 发表于 2025-3-11 20:25
Thank you for the response!

For me the offline button does not show up in the web interface. Howeve ...

If you want to use the offline download function, you need use the Mini_Burning_EVK,The firmware version can only be 4.0 to 4.5.
It should be noted that when using the latest bdt tool to download firmware to the chip, there is a possibility that the flash may become locked. In such cases, attempting to download firmware using an offline programmer may fail, as offline programmers do not unlock the flash.
The instructions for using the Mini_Burning_EVK: https://doc.telink-semi.cn/doc/en/openplatform/Mini_Burning_EVK/
This Mini_Burning_EVK can be used in conjunction with BDT or WEB BDT.

Steps for using WEB BDT:
1、click the mode button to switch to web bdt mode. at this time, the downloader will only have a blue light on. after plugging in the USB and powering on the downloader again, you will see web4.x string displayed on the screen.

2、download Zadig:https://zadig.akeo.ie/,select the Telink Web Debugger v4.x and click the replace driver.after successful prompt, unplug and plug in the USB to power on the downloader again

3、open the web bdt:https://doc.telink-semi.cn/webtool/web_bdt the web bdt document:https://doc.telink-semi.cn/doc/en/openplatform/web_bdt/
4、download offline firmwares according to the following screenshots



Steps for using Windows BDT:
1、download the windows bdt: https://wiki.telink-semi.cn/wiki ... ols-for-all-Series/

2、click the mode button to switch to win bdt mode. at this time, the downloader will only have a green light on. after plugging in the USB and powering on the downloader again, you will see win4.x string displayed on the screen.

3、open windows bdt and download offline firmwares according to the following screenshots



You can according to the following screenshots to update the firmware of the Mini_Burning_EVK.