v30x blink example don't run if TARGET_MCU_PACKAGE sets to CH32V307VCT6 about ch32v003fun HOT 6 OPEN

Sadly, at the moment no one is looking into this specific target. If you are up for seeing where we've made a mistake, it would be great to let us know.

There's plarform-specific code in the .ld, Makefile, and ch32v003.h

As a note, when changing the .ld, you will need to remove the auto-generated .ld for your part in the ch32v003fun folder.

Please let us know what you find.

from ch32v003fun.

When setting TARGET_MCU_PACKAGE:=CH32V307VCT6, if I only change manually the generated_CH32V307VCT6.ld file with the following:

--- generated_CH32V307VCT6.ld.orig      2024-04-24 14:54:05.818278697 +0200
+++ generated_CH32V307VCT6.ld   2024-04-24 14:54:15.906340380 +0200
@@ -1,8 +1,8 @@
 ENTRY( InterruptVector )
 MEMORY
 {
-  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K
-  RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 128K
+  RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 32K
 }
 SECTIONS
 {

It works.
Reading the datasheet, I have noted this footnote but I could not find (or more exactly, don't know where to find) more info about this:

from ch32v003fun.

@AlexanderMandera - do you recall if you ever tested with CH32V307VCxx? Should this line read 2 instead of 1? MCU_PACKAGE:=1 https://github.com/cnlohr/ch32v003fun/blob/6c3c515598db6d3d50f8087da2f694ee417fc445/ch32v003fun/ch32v003fun.mk#L114C14-L114C18

@romainreignier Can you test with changing that line of that file from 2 to 1, removing the generated .ld file, and seeing if it works then?

from ch32v003fun.

If I change the 1 to a 2, it works but the linker script now contains 128K of flash and 32K of ram while according to the datasheet, the VC variant should be 256/64:

from ch32v003fun.

I am just not familiar with the 30x line, does it make sense to add another package type for the 307? You can copy-paste it from one of the other parts, and make a PR.

from ch32v003fun.

make TARGET_MCU=CH32V307 TARGET_MCU_PACKAGE=CH32V307VCT6

it should work

MEMORY
{
  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 256K
  RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
}

from ch32v003fun.