Hacktoberfest 2026 : les issues que les mainteneurs ont marquées pour octobre, ouvertes et accessibles aux débutants. Parcourir les issues Hacktoberfest

[Feature] Support STM32F103C6 (32KB Flash, 10KB RAM) on stm32f103-blue-pill

Ouverte
#11,854 1 commentaire 0 réactions 0 personnes assignées Voir sur GitHub

Les mainteneurs répondent en général sous 1 jour

Personne n'a encore pris cette issue.

Évaluation

Difficulté
4/5
Temps estimé
3-5 jours
Accessibilité débutants
20/100
Type d'issue
Fonctionnalité
Clarté
Clairement spécifiée
Activité
À l'abandon
Stack technique
c
Domaine
embedded-iot

Piste de recherche

The issue names bsp/stm32/stm32f103-blue-pill, including board.h, link.lds, rtconfig.py, board/Kconfig, README.md, and README_zh.md. Start by reviewing PR #11850, which the issue says already implements and verifies the proposed solution. Check its changes and validation against the C6 memory and peripheral constraints; the work is done when C6 builds fit its memory limits while the default C8 remains compatible.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

Arch: ARM/AArch64 BSP BSP: STM32 enhancement
Affected area

Board Support Package (BSP)

Hardware/BSP vendor

STM32

Architecture

ARM / AArch64

Describe problem solved by the proposed feature

Currently, bsp/stm32/stm32f103-blue-pill only supports the STM32F103C8 chip (64KB/128KB Flash, 20KB RAM).
However, many widely available Blue Pill development boards on the market come populated with the lower-cost, pin-compatible STM32F103C6T6 (32KB Flash, 10KB RAM).

Attempting to run the existing BSP on an STM32F103C6 board causes several issues:

  1. Flash Overflow: The default firmware image exceeds 32KB, failing to fit or link for the C6 flash boundary.
  2. RAM Corruption: board.h and the linker script assume 20KB SRAM (HEAP_END at 0x20005000), whereas C6 has only 10KB SRAM (HEAP_END at 0x20002800). Any heap allocation past 10KB causes silent memory corruption or HardFault.
  3. Peripheral Differences: STM32F103C6 silicon physically lacks USART3 and SPI2.
Describe your preferred solution

Add support for the STM32F103C6 variant to bsp/stm32/stm32f103-blue-pill while keeping 100% backward compatibility for the default STM32F103C8:

  1. Kconfig Chip Choice:

    • Add a choice between SOC_STM32F103C8 (default) and SOC_STM32F103C6.
    • When C6 is selected, automatically select RT_USING_SMALL_MEM, RT_USING_SMALL_MEM_AS_HEAP, and RT_KLIBC_USING_LIBC_VSSCANF.
  2. Accurate Memory Boundaries (board.h & link.lds):

    • Dynamically define STM32_FLASH_SIZE (32KB) and STM32_SRAM_SIZE (10KB) under SOC_STM32F103C6 so HEAP_END is strictly bounded at 0x20002800.
    • Update link.lds with dynamic _ROM_SIZE and _RAM_SIZE symbols.
    • Pass -Os and --defsym=_ROM_SIZE=32k,--defsym=_RAM_SIZE=10k in rtconfig.py for C6 builds.
  3. Peripheral Constraints (board/Kconfig):

    • Guard USART3, SPI2, and RTduino with depends on !SOC_STM32F103C6.
    • Add BSP_USING_SPI1 option (supported on C6).
  4. Flash Optimization Guide:

    • Document optimization steps in README.md and README_zh.md (disabling serial DMA, FinSH symbol descriptions, and reducing shell stack to 2048) to fit standard RT-Thread with interactive FinSH (msh >) within 32KB.
Describe possible alternatives

I have already implemented and verified this solution in the PR #11850

Langage dominant
C
Étoiles
12.3k
Forks
5.5k
Merge moyen
7 j 22 h
PR mergées (30 j)
30

Préparer son environnement

Ouvrir dans Codespaces

Lance le conteneur de développement du projet dans votre navigateur, avec votre propre compte GitHub.

Par où commencer

  1. Lisez l'issue en entier, puis le guide de contribution du projet.
  2. Signalez en commentaire que vous la prenez — cela évite que deux personnes fassent le même travail.
  3. Forkez le dépôt et travaillez sur une branche.
  4. Ouvrez une pull request qui référence le numéro de l'issue.

Autres issues de RT-Thread/rt-thread

Toutes les issues de RT-Thread/rt-thread

Issues similaires

Plus d'issues C

Recevez les nouvelles issues par e-mail

Un résumé court des issues GitHub adaptées aux débutants.