hc32f460: Add app address 0x10000

[falk-h]

This is required for the Anycubic Kobra 2. See this definition in Anycubic's newly released source code.

[github-actions]

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[KevinOConnor]

@SteveGotthardt - any comments on this?

-Kevin

[AleksB27]

Successfully tested on Kobra2.

[ABDViciousOne]

Successfully tested on Kobra2.

What settings did you use for building the firmware

[falk-h]

What settings did you use for building the firmware

Micro-controller Architecture (Huada Semiconductor HC32F460)  --->
Communication interface (Serial (PA15 & PA09))  --->
Application Address (0x10000)  --->
Clock Speed (200 MHz)  --->

I'm not entirely sure that these settings are correct (especially the clock speed), but these are the last settings I used before I went back to the stock firmware. I ended up going back because I wasn't able to figure out which pins to use to talk to the stepper drivers over UART.

Anycubic's source code seems to run the stepper drivers in standalone mode, without UART communication, but they have only released the source code for v2.9.3 of the firmware at the time of writing. v3.0.2 has linear advance and input shaping, which iirc can't work without talking to the stepper drivers over UART, but the source for v3.0.2 isn't released yet. I'm currently waiting for them to release that source before I continue trying to get Klipper to work on my printer.

[AleksB27]

I used 168mhz speed
Steppers are in stand-alone mode 100% - I checked all GPIO pins of controller and can provide a map (expect 3-4pins I was not able to found). UART communication is made in parallel meaning there is no UART :)
Also all stepper drivers share same enable pin - PC3/ADC1_IN13. Also there are some GPIO that have unsoldered resistors/jumpers, but I didn't track them
PA2/ADC1_IN2 Unused R87 (unsoldered)
PA3/ADC1_IN3 Unused R100, 125, R126 (unsoldered)
PB3 Unused R127 (unsoldered)

[falk-h]

@AleksB27 I think I had figured out most of the pins by looking at Anycubic's source (and some trial and error), but I'd very much appreciate a map :)

[AleksB27]

Sure
Trigorilla Pro B CPU pinout.xlsx

[KevinOConnor]

Thanks.

-Kevin

[Coldarn]

Successfully tested on Kobra2.

@AleksB27 Could you share the full printer.cfg you used? I'm trying to get my Kobra 2 working with Klipper but so far have been stumped by many unfamiliar settings. Here's the incomplete starting point I'm working from: https://drive.google.com/file/d/1pM1Jqvb7u2QWBPVBMnJPBVq0YINx-xez/view

[Coldarn]

Never mind, I found this tutorial included the configs I needed; here's a direct link to them for posterity: https://drive.google.com/file/d/1b9xOY9zppay2TfVpMH0pkc6hTFPuR4Y5/view?usp=drive_link