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by DeusExMachina
Tue Nov 13, 2018 12:57 am
Forum: STM32 Support
Topic: Semihosting with newlib freeze
Replies: 9
Views: 1456

Re: Semihosting with newlib freeze

Just thought that it would be really cool to have an embedded console output via semihisting debugging interface... No mess with USB2UART adapters or USB drivers... And it works only when debugger is attached! No user interference is possible. It is even possible to open files on PC side and write d...
by DeusExMachina
Mon Nov 12, 2018 4:32 am
Forum: STM32 Support
Topic: Semihosting with newlib freeze
Replies: 9
Views: 1456

Re: Semihosting with newlib freeze

Chibios definetely has some conflict with newlib, since on bare metal semihosting works fine with openocd and st-link/jlink (I was even able to use gprof for profiling an embedded target). I checked both F072 and F407 bare metal targets which worked with minimal modifications.
by DeusExMachina
Wed Nov 07, 2018 2:58 am
Forum: STM32 Support
Topic: Semihosting with newlib freeze
Replies: 9
Views: 1456

Re: Semihosting with newlib freeze

Have anybody solved this problem with semihosting? I have converted on-board st-link to j-link, added --specs=rdimon.specs to makefile and call initialise_monitor_handles(); on startup. However, printf hangs up and nothing is out on the monitor side.
by DeusExMachina
Wed Sep 12, 2018 12:16 am
Forum: STM32 Support
Topic: eMMC not working with STM32F4
Replies: 4
Views: 2616

Re: eMMC not working with STM32F4

eMMC works fine with F4 (tested with 16.1.6)
Don't forget to add scratchpad buffer in SDCConfig structure
by DeusExMachina
Thu Aug 09, 2018 5:02 am
Forum: STM32 Support
Topic: USB hid driver not getting install
Replies: 2
Views: 433

Re: USB hid driver not getting install

HID input devices basically do not require any drivers.
by DeusExMachina
Wed Apr 25, 2018 12:26 pm
Forum: User Projects
Topic: Presentation on ArduPilot switch from NuttX to ChibiOS
Replies: 7
Views: 2824

Re: Presentation on ArduPilot switch from NuttX to ChibiOS

faisal wrote:...
Do you remember if the chibios HAL was also adopted, was the difference between them just the kernel? I'm (pleasantly) surprised if just swapping out the scheduler between FreeRTOS and ChibiOS is that dramatic.

AFAIK they used kernel only
by DeusExMachina
Sat Apr 07, 2018 1:59 am
Forum: User Projects
Topic: Presentation on ArduPilot switch from NuttX to ChibiOS
Replies: 7
Views: 2824

Re: Presentation on ArduPilot switch from NuttX to ChibiOS

Cool! I've seen guys from Taulabs had been migrating from FreeRTOS to ChibiOS due to simillar performance issues Really? Any details on this? I'm very interested. Having looked at both implementations to a extent, my expectation was that FreeRTOS and ChibiOS would be comparable in terms of performa...
by DeusExMachina
Tue Feb 27, 2018 7:49 am
Forum: User Projects
Topic: Presentation on ArduPilot switch from NuttX to ChibiOS
Replies: 7
Views: 2824

Re: Presentation on ArduPilot switch from NuttX to ChibiOS

Cool! I've seen guys from Taulabs had been migrating from FreeRTOS to ChibiOS due to simillar performance issues
by DeusExMachina
Thu Jan 04, 2018 2:16 am
Forum: Safer C
Topic: [DISCUSSION] Rationale for yet another C variant
Replies: 19
Views: 5468

Re: [DISCUSSION] Rationale for yet another C variant

AFAIK, the Ravenscar profile is very similar to your ideas, Giovanni. https://en.wikipedia.org/wiki/Ravenscar_profile The language itself supports many RTOS primitives http://blog.adacore.com/theres-a-mini-rtos-in-my-language They say it can run on Cortex M0. There is an existing Ravanscar runtime f...
by DeusExMachina
Wed Jan 03, 2018 2:49 am
Forum: Safer C
Topic: [DISCUSSION] Rationale for yet another C variant
Replies: 19
Views: 5468

Re: [DISCUSSION] Rationale for yet another C variant

I think the industry already has a solution to these woes :) How about ADA? It is widely used in the US military projects and there is a free GNAT compiler for experiments.

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