SOLVED: Bricked throttle controller :-( -- Was using wrong firmware

Throttle Controller
1

Before you get too far into this, I’ll just cut to the chase: I finally figured out that I should have been using the “CM0-SP140” version of the firmware as I have the SAMD21 architecture, not the “CRP2040” version.

So I’m able to flash the 5.6 version using the browser-based tool with drag-and-drop. I still don’t know how to get the IDE platform to compile and flash the correct version if I wanted to, for example, compile and use v5.7a1.

Hi all,

I have an SP140, latest batch.

I’m trying to update my firmware (was v5.4) to v5.6 or v5.7a1. I’ve installed the IDE and can compile the firmware.

However, when I click on “Upload” it appears to be copying the “X4” firmware over to the controller:

Environment Status Duration

OpenPPG-CM0-X4 SUCCESS 00:00:10.971
OpenPPG-CM0-SP140 FAILED 00:00:07.532
OpenPPG-CRP2040-SP140 FAILED 00:00:42.863

I believe it should be using (uploading) the “CRP2040-SP140” firmware. Now my controller is bricked. It won’t boot up and the screen is black. It does still appear as an external USB device on my computer, and I can see three files on the “drive”

CURRENT.UF2
INDEX.HTM
INFO_UF2.TXT

But they all have the date/timestamp of December 24, 2018, so I don’t think any of them are the new firmware I just compiled.

How do I get the right firmware onto the controller and un-brick it?

2

I commented out the following lines in platformio.ini

default_envs =
;OpenPPG-C M0-X4
;OpenPPG-CM0-SP140

So now it’s only building the OpenPPG-CRP2040-SP140 firmware. But when I try to upload, I get an error:

Looking for upload port...
Auto-detected: /dev/cu.usbmodem1101
Forcing reset using 1200bps open/close on port /dev/cu.usbmodem1101
Uploading .pio/build/OpenPPG-CRP2040-SP140/firmware.elf
rp2040load 1.0.1 - compiled with go1.15.8
.....................
*** [upload] Error 1
================================================== [FAILED] Took 16.17 seconds ==================================================

Environment            Status    Duration
---------------------  --------  ------------
OpenPPG-CRP2040-SP140  FAILED    00:00:16.175
============================================= 1 failed, 0 succeeded in 00:00:16.175 =============================================

 *  The terminal process "platformio 'run', '--target', 'upload'" terminated with exit code: 1. 
 *  Terminal will be reused by tasks, press any key to close it.

So I’m not sure what I need to do to get it to talk to the USB device. The device shows up as a USB drive, and in the IDE under devices it’s showing up as

/dev/cu.usbmodem1101 Controller C2 USB VID:PID=239A:0015 SER=6B924E8250593652322E3120FF030B1E LOCATION=1-1

So the IDE can see the device. It’s just not copying the firmware over correctly.

3

I’ve also tried to use the browser-based tool at config.openppg.com. The browser can connect to the serial/USB device. But when I click the button to “Reboot in update mode,” nothing appears to happen.

I can drag-and-drop the file “OpenPPG-CRP2040-SP140.uf2” onto the USB device. But nothing happens after that. It doesn’t reboot. Should I rename the file?

I am seeing a tiny flickering blue LED on the main board…

4

Solved. I should have been using the CM0 firmware. :angry: I can drag-and-drop the (correct) firmware to the USB device.

I still don’t know how to get the IDE to compile and upload the correct version though.

5

Were you able to figure out how to compile the firmware on your own?
Using platformIO should make it fairly simple once you have VScode and the proper extension downloaded