prosper00

Appreciate the effort , and look forward to seeing the results.

I just used the UART / serial bootloader. Worked great. Self-updates from the USB stick work well too to keep things updated.

the HCSR04 library you're trying to use is a C++ library. sduino is standard-C only.

No. You'd have to rewrite it. Or use an arduino nano

that's a c++ lib you're trying to include. sduino is plain C only. However, it looks like there's a plain C version of that lib on github. I'd start by...

edit: the vnproch55 programmer used in ch55xduino works fine: ``` /home/bdroy/.arduino15/packages/CH55xDuino/tools/MCS51Tools/2020.12.01/linux/vnproch55x /tmp/arduino_build_302531/CMSIS_DAP.ino.hex ------------------------------------------------------------------ CH55x Programmer by VNPro ------------------------------------------------------------------ Load file as hex Loaded 9670 bytes between: 0000 to 25F3 DeviceVersion...

So, I guess this is because new (since about a year ago) chips ship with bootloader version 2.40, which librech551 doesn't support. For the benefit of anyone else stumbling onto...

**[jixin.pro DAPLINK](https://www.aliexpress.com/item/1005004518845326.html)** ``` [Mar31 08:36] usb 3-2.2: new full-speed USB device number 89 using xhci_hcd [ +0.146097] usb 3-2.2: New USB device found, idVendor=c251, idProduct=f001, bcdDevice= 1.00 [ +0.000006] usb...

**[rp2040 picoprobe-cmsis-v1.0.2](https://github.com/raspberrypi/picoprobe/releases)** ``` [Mar30 21:35] usb 3-2.2: new full-speed USB device number 74 using xhci_hcd [ +0.152667] usb 3-2.2: New USB device found, idVendor=2e8a, idProduct=000c, bcdDevice= 1.01 [ +0.000006] usb...

**[rp2040 DapperMime](https://github.com/majbthrd/DapperMime)** ``` [ +0.155295] usb 3-2.2: new full-speed USB device number 76 using xhci_hcd [ +0.146445] usb 3-2.2: New USB device found, idVendor=cafe, idProduct=4005, bcdDevice= 1.01 [ +0.000005] usb...