ChibiOS Free Embedded RTOS

Solved... it is not related with ChibiOS.

I was using the same script for flashing as for the STM32F4. Where I only erased 4 sectors.

4 sectors in F4 is 32KB, in the F100 is 4KB, therefore the flashing was wrong (the binary for the F100 was bigger than 4KB).

Hi, sorry for the title, but I can not find a suitable one for describing what is happening here.

I am dealing with a STM32F100C8 (8KB RAM and 64KB Flash).
I have modified the linker script SM32F100xB with the new lenght of the Flash (before it was set to 128KB).

The next main works as expected ...

Probably this is a common issue and not only related with the USB CDC.

I have one Thread which sends every second two chars (one integer and one blank) with chprintf


while (TRUE) {
time += MS2ST(1000);
u++;
chprintf(stream_usb, "%d ", u);
palTogglePad(GPIOB, GPIOB_LED_BLUE ...

Thank you very much for your answers Giovanni.

The board is custom and I prefer JTAG with my current set up. I have put all of them at "8", and so far I can communicate with the micro without problems.
Good point about selecting the HSE instead of the output of the PLL, I will give it a try ...

Hi,

whereas the setting up for STM32F4 is quite clear in board.h, in my opinion it is a little bit confusing for STM32F100.
I have taken the example for the DiscoveryVL board and I am trying to modify it. My board.h looks like

/*
* IO pins assignments.
*/
#define GPIOA_CH1 0
#define GPIOA ...

Hello Nitin

Where can I check the code?
Are also the schematics / board files available?

pd: Also I have found several times references to an "opensource RTOS" but not for ChibiOS

Do you still have problems with OpenOCD and STLINKv1/2 ?

It seems that a new release candidate is out and they claim that it supports STLink, actually there is a .cfg specially for the discovery board.

I missed this:
@dandys, I believe that __attribute__ is a GCC-specific extension.

Agree. But there can be some similar extensions for other compilers too (as is for packed structures for example). In this case some macros like KEEP_SYMBOL_BEGIN and KEEP_SYMBOL_END can be defined in chtypes.h. Are ...

mabl wrote:Giovanni, I think the ch_root symbol is automatically removed by the GCC garbage collection....

From my ignorance in programming but, can not you just declare it as "volatile"? then the compiler will not remove it.

ChLORIDE here!