ChibiOS Free Embedded RTOS

Hi,

The alternate port is under /os/common/ports/ARMv7-M-ALT, just replace the port path inclusion in the makefile.

Giovanni

__port_switch: push {r4, r5, r6, r7, r8, r9, r10, r11, lr} #if CORTEX_USE_FPU /* Saving FPU context.*/ vpush {s16-s31} #endif str sp, [r1, #CONTEXT_OFFSET] #if (CORTEX_SIMPLIFIED_PRIORITY == FALSE) && \ ((CORTEX_MODEL == 3) || (CORTEX_MODEL == 4)) /* Workaround for ARM errata 752419, only a...

Hi, In that port the context switch is performed synchronously and without entering an exception state, look at the asm implementation of port_switch(). It just stacks/unstacks all the EABI function-preserved registers and swap stacks. Note that there are 2 distinct ARMv7-M ports, the alternate port...

Hi,

An implementation will be added soon, some testing will be appreciated.

Giovanni

Hi, It is a silicon limitation, from the STM32F1xx reference manual: "In low, medium, high and XL-density devices, the USB and CAN share a dedicated 512-byte SRAM memory for data transmission and reception, and so they cannot be used concurrently (the shared RAM is accessed through CAN and USB ...

Hi,

The tool is embedded in ChibiStudio, see https://www.playembedded.org for guides.

Alternatively there is a script /os/hal/boards/genboard.sh that generates the files starting from an XML description, it requires installation of the FMPP utility.

Giovanni

Hi,

The STM32F4 does not have a DMAMUX so peripherals use specific DMA channels, you need to check the Reference Manual and see if there are alternative channels that can be used in your case. There is a table with mapping in the DMA chapter.

Giovanni

The PHY could require some extra initialization.

Giovanni

Great thanks, moving this topic in "bug reports" so it is not lost.

Giovanni

It could be a SW issue, ULPI has not extensively tested.

Giovanni