[New Variant]STM32F401

[mrguen]

Helllo, Thanks for the huge quantity of work!

I would like to know if you plan to include in the release 1.7.0 these generic variants for F401

STM32F401CC in UFQFPN48 and LQFP64 packages

STM32F401RCT6 in LQFP64 package

Generally speaking how do you handle the different packages versions?

[pkourany]

@mrguen, I have the RCT6 variant working on my system with v1.61 but haven't create a PR yet. I you want the variant file package and changes boards.txt file, I can post it.

[mrguen]

@pkourany Oh, Thanks a lot. That would be nice of you.

[pkourany]

Here is the working RCT6 variant. I have attached a zip of the variant folder. Do not rename this folder. The following needs to be added to the boards.txt file under the Generic F1 section of the file:

# Generic F103RCT6 board
GenF1.menu.pnum.GENERIC_F103RC=Generic F103RCT6
GenF1.menu.pnum.GENERIC_F103CB.upload.maximum_size=262144
GenF1.menu.pnum.GENERIC_F103CB.upload.maximum_data_size=49152
GenF1.menu.pnum.GENERIC_F103CB.build.board=NUCLEO_F103RB
GenF1.menu.pnum.GENERIC_F103CB.build.product_line=STM32F103xE
GenF1.menu.pnum.GENERIC_F103CB.build.variant=GENERIC_F103RCT6

GENERIC_F103RCT6.zip

You should review the pin used for an onboard LED the variant.h file. The included variant.h file specifies PA15 for the LED.

[mrguen]

Ok, Thanks Paul. The issue was open for STM32F401... I don't know if these files might help for the RCT6 type...

[pkourany]

Oh boy. I must have dyslexia cause I read F103RCT6 somehow! I'm going to hide that post since it isn't relevant.

BTW, a lot of the work is done by STM32CubeMX by creating a project for the MCU/package you want, configuring the clock for internal/external crystals and creating the code for that variant you want. From this, you can get the code to copy to the ldscript.ld file and the clock configuration code (from main.c) to place in the variant.c file. The PeripheralPins.c and PinNamesVar.h files for all variants can be obtained here. The variant.c and variant.h files can be adapted to a simple list of pin names.

variant.h
#define PA0   0
#define PA1   1
... for all GPIO pins on package

varian.c
const PinName digitalPin[] = {
  PA_0,  //D0
  PA_1,  //D1
  PA_2,  //D2
... for GPIO pins in package

You will also need to review other #defines in variant.h to match the pin counts, # of analog pins, LED pin, etc.

The last thing is to add the variant to the boards.txt file so it appears in the menu.

[mrguen]

Ok. I tried to do it by following your method and https://github.com/stm32duino/wiki/wiki/Add-a-new-variant-(board)

A) **************
There was a compilation problem because the board is not considered in Arduino15\packages\STM32\hardware\stm32\1.6.1\system\Drivers\CMSIS\Device\ST\STM32F4xx\Include\stm32f4xx.h

So I added

#if defined(STM32F401xC)
#include "stm32f401xc.h"

and uncommented #define STM32F401xC

B) **************
I modified boards.txt as :

################################################################################

Generic F4

GenF4.name=Generic STM32F4 series

GenF4.build.vid=0x0483
GenF4.build.core=arduino
GenF4.build.board=GenF4
GenF4.build.extra_flags=-D{build.product_line} {build.enable_usb} {build.xSerial} {build.bootloader_flags}
GenF4.build.mcu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
GenF4.build.series=STM32F4xx
GenF4.build.cmsis_lib_gcc=arm_cortexM4l_math

Secret Garden F401RC

GenF4.menu.pnum.STM32F401RCT6=Secret Garden F401RCT6
GenF4.menu.pnum.STM32F401RCT6.upload.maximum_size=262144
GenF4.menu.pnum.STM32F401RCT6.upload.maximum_data_size=65536
//GenF4.menu.pnum.STM32F401RCT6.build.board=STM32F401RCT6
GenF4.menu.pnum.STM32F401RCT6.build.product_line=STM32F401xx
GenF4.menu.pnum.STM32F401RCT6.build.variant=STM32F401RCT6

C) **************
But now there is a compilation error:

WARNING: Category 'Language' in library ArduinoStreaming is not valid. Setting to 'Uncategorized'
Un sous-r�pertoire ou un fichier sketch existe d�j�.

In file included from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_def.h:30,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_rcc.h:29,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/STM32F4xx/stm32f4xx_hal_conf_default.h:291,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/STM32F4xx/stm32f4xx_hal_conf.h:13,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal.h:30,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/CMSIS/Device/ST/STM32F4xx/Include/stm32f4xx.h:252,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/stm32_def.h:35,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/clock.h:43,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring_time.h:23,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring.h:38,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/Arduino.h:32,
from sketch\Blink.ino.cpp:1:
#ifndef __STM32F4xx_H

In file included from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/stm32_def.h:35,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/clock.h:43,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring_time.h:23,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring.h:38,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/Arduino.h:32,
from sketch\Blink.ino.cpp:1:
#ifndef __STM32F4xx_H

In file included from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_ll_rtc.h:29,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/LL/stm32yyxx_ll_rtc.h:21,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/backup.h:26,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/board.h:9,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring.h:41,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/Arduino.h:32,
from sketch\Blink.ino.cpp:1:
#ifndef __STM32F4xx_H

In file included from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_ll_gpio.h:29,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/LL/stm32yyxx_ll_gpio.h:21,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/stm32/digital_io.h:43,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/board.h:12,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/wiring.h:41,
from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino/Arduino.h:32,
from sketch\Blink.ino.cpp:1:
#ifndef __STM32F4xx_H

exit status 1
processing.app.debug.RunnerException
at cc.arduino.Compiler.lambda$callArduinoBuilder$3(Compiler.java:309)
at processing.app.debug.MessageSiphon.run(MessageSiphon.java:96)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
at cc.arduino.Compiler.message(Compiler.java:525)
at cc.arduino.i18n.I18NAwareMessageConsumer.message(I18NAwareMessageConsumer.java:80)
at cc.arduino.MessageConsumerOutputStream.flush(MessageConsumerOutputStream.java:71)
at cc.arduino.MessageConsumerOutputStream.write(MessageConsumerOutputStream.java:54)
at java.io.OutputStream.write(OutputStream.java:75)
at cc.arduino.Compiler.lambda$callArduinoBuilder$3(Compiler.java:307)
... 2 more

[pkourany]

@mrguen can you zip your variant directory and share here?

[mrguen]

Here it is: STM32F401RCT6.zip

boards.txt

[mrguen]

Here is what I have done :

1. Copy C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\variants\board_template
   to
   C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\variants\STM32F401RCT6

2. In STM32CubeMX
   Used the default settings for STM32F401RC but changed

• the clock for HSE / Crystal/Ceramic, set 8 MHz crystal M=4 PLL= 168 P=4 Q=7
  SYSCLK = 84 MHZ AHBPrescaler = 1 APB1Prescaler = 2

· Activated USART1 Asynchronous
· Activated SPI1 / Full Duplex master
· Activated USB / OTG/Dual role device
Generated the code for SW4STM32

3. Copied STM32F401RCTx_FLASH.ld to ldscript.ld

4. Copied SystemClock_Config(void) from the generated main.c to variant.cpp

5. Copied the files PeripheralPins.c and PinNamesVar.h from https://github.com/stm32duino/Arduino_Tools/tree/master/src/genpinmap/Arduino/STM32F401R(B-C)Tx to the STM32F401RCT6 folder

6. Copied digitalPin array in variant.cpp and pin defines in variant.h from NUCLEO_F401RE

In fact I am using this board https://fr.aliexpress.com/item/32894670982.html?spm=a2g0s.9042311.0.0.27426c37RrpWiJ and really don’t know their pin mapping. I have asked them a documentation… I suppose I can manage with the Nucleo numbering. I only changed the BOOT1 that was not considered on the NUCLEO board.

7. Modified boards.txt by adding in the “# Generic F4” section

Secret Garden F401RC

GenF4.menu.pnum.STM32F401RCT6=Secret Garden F401RCT6
GenF4.menu.pnum.STM32F401RCT6.upload.maximum_size=262144
GenF4.menu.pnum.STM32F401RCT6.upload.maximum_data_size=65536
//GenF4.menu.pnum.STM32F401RCT6.build.board=STM32F401RCT6
GenF4.menu.pnum.STM32F401RCT6.build.product_line=STM32F401xx
GenF4.menu.pnum.STM32F401RCT6.build.variant=STM32F401RCT6

8. There was a compilation error. I had to add at line 144 in C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\system\Drivers\CMSIS\Device\ST\STM32F4xx\Include\stm32f4xx.h

#if defined(STM32F401xC)
#include "stm32f401xc.h"

And uncomment #define STM32F401xC

[mrguen]

The seller sent me the link to the documentation : https://wetransfer.com/downloads/493b7605d31718be87a56133e7cc70d920190814152406/f44f44?spm=a2g0s.imconversation.0.0.7d7a3e5fzulqrL

There is a lot of material. Including an STM32CubeMX project that I used to replace ldscript.ld and · SystemClock_Config()

The compile error is still the same.

[fpistm]

Do not modify the core file.
Your issue comes from your board definition:

GenF4.menu.pnum.STM32F401RCT6.build.product_line=STM32F401xC

[mrguen]

I modified the boards.txt as explained but the error is still raised.
error compiling for STM32F401RCT6 .txt

[fpistm]

It seems you have an preprocessor directive issue, missing #endif or something like that.
I could not help this week I'm on vacation. I will test next week,

[mrguen]

Ok, Thanks, I let a #if instead of changing to #elif in stm32f4xx.h

Now, despite the #define STM32F401xC in stm32f4xx.h

it seems to be unknown by stm32_def_build.h

In file included from C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino\stm32\startup_stm32yyxx.S:1:
C:\Users\TG\AppData\Local\Arduino15\packages\STM32\hardware\stm32\1.6.1\cores\arduino\stm32\stm32_def_build.h:336:2: error: #error UNKNOWN CHIP
#error UNKNOWN CHIP

stm32f4xx.zip