olivilik / stm32f103

Cortex M3 hardware descriptions, library software, and some applications for ST and GD F103 platforms

STM32F103

Cortex M3 hardware descriptions, library software, and some applications for ST and GD F103 platforms

File Downloads

The Hardware branch has files usable in system design, such as Excel files for pin assignments and cabling.

The Software branch has the source files, header files, and supporting files, such as LCD font definitions.

Wiki

This is a tutorial how to develop hard real-time control with EmBitz using STM32F103 boards. This is a continuation of the work started in http://www.emblocks.org/wiki/tutorials/f401_f429_disco.

The Wiki is the main content of this repository. The file downloads are supporting the Wiki.

stm32f103's Issues

Another STM32F103C8T6

I have also this one:

http://www.zoobab.com/arm-cortex-m3-stm32f103c8t6-stm32-core-board-development-boa

It is missing from your listing, maybe I can add some infos about it if you want.

LOCM3 vector table is all blocking-handlers

I have followed your tutorial an got it to work with simple GPIO and loop-delays.

Then I tried using ISRs and it simply did not work.
Everything compiles without a glitch and loads into the target board (BluePill) and runs fine - except no ISRs get invoked. I do get interrupt(s) but they get stuck in blocking handlers.

Looking deeper I found that the whole vector table is filled with only blocking handlers. Here is a disassembly screenshot showing vector table:

It is as though linker simply ignores my nicely defined interrupt handler function(s), e.g.

void sys_tick_handler(void)
{
...
}

void tim1_up_isr(void)
{
...
}

I have checked the function names n-fold and have tried several online examples including those from the libopencm3-examples project to no avail.
This looks as a linker issue but I cannot figure it out (probably because I'm new to gcc).