Release v1.0.5 with wchisp

[delfer]

Release it pls

[rambros3d]

Its been a while since the last update.

@TianpeiLee @openwch

[maxint-rd]

@yangliangquan has taken over and provided some support. I have good hopes...

[DeqingSun]

For anyone just want wchisp, you can try this
https://github.com/DeqingSun/arduino_core_ch32/releases/download/arduinoPack/package_ch32v_index_add_ch573.json

[boda-akos]

Hello, using the CH32V006E4R6 24pin , installed the link in the previous post, compile OK but can not upload. Clock is 24Mhz internal (correct), WCH-LinkE and my board is OK using MounRiver Studio. Please give some clue, thanks . , , Waiting for the 1.0.5 release thou...

[maxint-rd]

Hello @boda-akos -
To enable uploading and interactive debugging from the Arduino IDE you need to update OpenOCD using the copy from MRS. I've published some instructions here.

To improve support for the 24 pin package you may find the inspiration in my my recent PR #200, which adds a board definition for the 20-pin TSSOP package.

[boda-akos]

Thanks a lot, working on it... and 30 min later -> WORKS.

[boda-akos]

SPI library using the CH32V006K8 can not find the correct registers. To solve this, locate the following : C:\Users\ ..user..\AppData\Local\Arduino15\packages\WCH\hardware\ch32v\25.4.25\libraries\SPI\src\utility .
Edit the spi_com.c file.
Replace the lines #if defined(CH32L10x)
(6 places if I am correct)
with this : #if (defined(CH32V006K8) || defined(CH32L10x))

[maxint-rd]

Correct. That fix was submitted by @tako0910 as PR #199. It includes the same fix for I2C, In PR #200 I included both fixes.

Note however that because it also affects other V006 packages and other VM00X boards, those fixes use a more generic board identification:
#if defined(CH32L10x) || defined(CH32VM00X)

(CH32VM00X is defined for the whole range of M00X and V00X except V003)

[boda-akos]

Hello, This is about the CH32V006 : When running the example SPIFlash.ino on CH32V003, the SPI transfer finishes in 20-30 microseconds and there is signal on MISO SCK etc pins. Same example compiles with no errors on CH32V006 but the SPI transfer times out 1 sec and there is no signal. I have made the changes #if (defined(CH32VM00X) || defined(CH32L10x)) as in previous post. What am I missing still ?

[maxint-rd]

Hello @boda-akos - Can you give some details about your test setup?
I haven't tried anything SPI related yet, but when I have some time available, I can try to reproduce your issue.

What package of the V006/V003 were you using? I have TSSOP20 versions of V003, V002 and V006 available for testing.

What flash chip did you connect to the V006? I can try to find a similar flash chip in my collection (don't know which ones I have).

In the .ino I see this pinout for the V003:

  CS:   PA2 (003 is PC4)
  MOSI: PA7 (003 is PC6) 
  MISO: PA6 (003 is PC7)
  SCK:  PA5 (003 is PC5)

I assume you used the ones listed between parenthesis for V003. The V003 pinout diagram shows PC1 as NSS (CS) pin. The example uses A2 (PC4). Usually the CS pin can be any random GPIO pin.
Do you have any pull-ups connected? If so, what value?

Is there anything else specific to your setup? What voltage are you using? Did you modify the example code in any way?

And perhaps most important: do you have SPI module enabled via either IDE menu or the variant file variant_CH32V006xx.h?
#define SPI_MODULE_ENABLED
(In my version of the V002/V006 boards I added peripheral selection as menu option in the Arduino IDE)

BTW: your comment about SPI is not specifically related to this issue (the request to "Release v1.0.5 with wchisp"). If you encounter other problems, perhaps you can add them as new issues? That makes it a bit easier for other readers to respond,

[boda-akos]

Hello maxint-rd Thanks in advance for your time. I send some photos about the things I use. I started 3 weeks ago with the 003 but soon filled up the 16k. With that chip, most libraries work well. Also , the SPI example uses the pins what is on your answer as "003 is" etc.  I have 24 pin and 20 pin versions of the 006 which I find a very promising chip. By the way, I am a hobbyist, no more, never studied coding professionally. Please see my page here :   https://www.thingiverse.com/akosboda/designs Allright, about the subject. I2C was a success on the 006. So was the timer interrupt. I wrote SPI driver for this TFT ST7735 bit-banging, and also for other types. It is fast enough (even had to delay 1usec when writing) but I can not use the Adafruit GFX library this way I think - and I'd love to. This is why I tried the SPI library, it is OK on the 003 but on the 24 pin chip no success at all. The default pins are not available on the 24 pin - PC7 is N/A , PC5 is RST. So i did AFIO->PCFR1 |= 0x02; this to remap the pins and the register is alive if I read it back I see the value so there is also clock, but the outputs remain floating. No other pins move when execute SPI.transfer(); don't know what I miss still. I am not using pull-ups. The output CLK MOSI etc is clearly floating, see it on the oscilloscope. CS works of course.  I tried to modify the default pins in the libraries (attached, SPI in the end) with remap together but no result. The .ino file was modified in every possible way. So I know that the loop code does run , can read and verify / Serial.print registers etc. There everything was looking good. Now based on your question or idea, I will try the same procedure on the 20 pin chip which looks better, no conflicting pins. Will write to you about the result. Thank for mentioning this #define SPI_MODULE_ENABLED , will try it out ASAP. Kind regards, Akos Boda On Monday, June 23, 2025 at 05:33:32 PM GMT+2, Maxint R&D ***@***.***> wrote: maxint-rd left a comment (openwch/arduino_core_ch32#197) Hello @boda-akos - Can you give some details about your test setup? I haven't tried anything SPI related yet, but when I have some time available, I can try to reproduce your issue. What package of the V006/V003 were you using? I have TSSOP20 versions of V003, V002 and V006 available for testing. What flash chip did you connect to the V006? I can try to find a similar flash chip in my collection (don't know which ones I have). In the .ino I see this pinout for the V003: CS: PA2 (003 is PC4) MOSI: PA7 (003 is PC6) MISO: PA6 (003 is PC7) SCK: PA5 (003 is PC5) I assume you used the ones listed between parenthesis for V003. The V003 pinout diagram shows PC1 as NSS (CS) pin. The example uses A2 (PC4). Usually the CS pin can be any random GPIO pin. Do you have any pull-ups connected? If so, what value? Is there anything else specific to your setup? What voltage are you using? Did you modify the example code in any way? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: ***@***.***>

[boda-akos]

Well it seems that #define SPI_MODULE_ENABLED was the solution. The loop runs now fast, no timeout. on a 20pin CH32V006F8P6 the default pins work well. Please check the default pin definitions in PeripheralPins.c and variant_CH32V006K8 should be

// SPI definitions
#ifndef PIN_SPI_SS
#define PIN_SPI_SS PC1
#endif
#ifndef PIN_SPI_MOSI
#define PIN_SPI_MOSI PC6
#endif
#ifndef PIN_SPI_MISO
#define PIN_SPI_MISO PC7
#endif
#ifndef PIN_SPI_SCK
#define PIN_SPI_SCK PC5
#endif
}
PC1 may conflict with other peripherals, but it is only CS.
The following minimalist SPI .ino code needs an oscilloscope to test the pins.

#include <SPI.h>

#define SPI_MODULE_ENABLED
//define CS pin
#define chipSelectPin PC1

void setup() {

SPI.begin();
pinMode(chipSelectPin, OUTPUT);
}

void loop() {
digitalWrite(chipSelectPin, 1);
SPI.transfer(0x55);
digitalWrite(chipSelectPin, 0);
SPI.transfer(0x55);
}

[maxint-rd]

You have some really cool projects on your Thingiverse page. Very inspiring! (your Easy Binary Clock made me smile).
I'm also just a hobbyist and like to use these CH32 chips because their affordability allows me to take a bit more risk. (So far I've only destroyed a few, used in my high voltage boost converter project, but I'm glad to have plenty spares in stock). The V006 is interesting because the TSSOP20 has identical pin-out as the V003 while its 64kB flash gives me the room to do real time debugging. I only purchased the TSSOP20 version of the V006 and the V002 and made board files for those variants in PR #200.

Nice to read you got things working. The normal way is to select the peripheral using #define SPI_MODULE_ENABLED in the file variant_CH32V006K8.h. To safe flash space you normally comment out the define of peripherals you don't use. Because I found that method quite a pain, I modified the board.txt and platform.txt files to allow selection from the Arduino IDE menu. I've shared my changes (and others) in PR #200

Thanks for the minimalist code to test SPI. When I find some time I want to test SPI on my chips and use a logical analyzer to view the signals.
BTW. I think doing the define in the .ino may lead to problems when changing the define while using precompied core/libraries. I don't have that when changing the selection from the menu,...

[boda-akos]

Hello maxint-rd,

To test the SPI , connected the CH32V006 (20 pin)

CH32V006Nokia.txt

to a PCD8544 LCD. It works fine. The Adafruit driver can do bit-banging too, so one can see the speed difference.

File attached as .txt

Please feel free to move this and previous subject under a new title "new issues" as you like.