[CH32VM00X] Support TSSOP20 variants ch32v002f4 ch32v006f8 #200
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Note: added peripheral menu in board.txt only for V003, VM00x, X035 - lacking board options for others will probably result in failing to compile. TODO: support peripheral menu for others
Issue openwch#27 [this comment](openwch#27 (comment)).
This was referenced Jun 17, 2025
maxint-rd
changed the title
This was referenced Jul 7, 2025
Open
define CH32V002 when CH32V002F4 is defined (as done by board selection)
Check if USART2 is defined before using it.
…openwch#65) - micros was counting backwards (openwch#65) - micros used 64-bit division; using 32-bit is more than 1K smaller (openwch#204) (requires same change for delayMicroseconds() in ../wiring_time.h)
delayMicroseconds() used 64-bit division; using 32-bit is more than 1K smaller (see openwch#204) (similar change for micros() in ch32/clock.c)
This was referenced Aug 5, 2025
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Recently I acquired some CH32V002 and CH32V006 chips in a TSSOP20 package. Since they share the same pinout as the CH32V003, I think they can be useful upgrades for V003 projects. Based on the V006 QFN32 variant K8U6 this PR adds support for the V002 and V006 in TSSOP20 packages.
The V006 has 62KB flash, which makes it a good candidate for debugging V003 projects. I included some handy information such as Arduino pin numbers and installation instructions in
variants/CH32VM00X/README.md.Note: This PR is not 100% complete but works for me and may be useful for others. It adds peripheral selection from the IDE menu only for certain chips. For others it may break compilation/uploading, so please be selective and know what you want.
To make it useful this PR includes some changes derived from other PR's:
|| defined(CH32VM00X)to support I2C and SPIUnfortunately I don't have the full range of CH32 chips in my collection. I've only implemented support for the chips that I could test. The README gives some further info about this and other known issues.