ChibiOS Free Embedded RTOS

According to documentations I found, it seems to be used for "context switching". However, I find it hard to estimate how much working space is actually needed. I find it intriguing to dig through the code because I couldn't find a straightforward way to search for relevant code. I boil do...

Ah, stupid me... 10 seconds after I posted this, I noticed that I should pass (msg_t *) &p instead of (msg_t *) p . Unfortunately `-Werror=all` didn't capture this one... And indeed this operation yields to other threads. Can I assume anything in ChibiOS that requires waiting will yield to other...

I tried to use mailbox + memory pool as a FIFO to communicate between threads. Currently, I tested this configuration on the receiving thread: chMBFetch(&mb, (msg_t *)p, TIME_INFINITE); where `p` is actually a pointer to something in a memory pool. However, as I observed, this line seems to bloc...

Nice work! Maybe this driver can be used to make a hardware independent software serial driver later on? I think it could be a complex driver on top of the EXT, GPT and PAL drivers. I would say, maybe share timer with sysclock. Unless it is doing things like 115k Baud, the overhead should be small ...

Oh, right -- It still misses a few characters occasionally. But for my application that is fine. I may put some more time to fix it, though. Just a note: `sdRead()` has inconsistent results. However, `sdGet()` has no problem at all. Since I haven't figured out how to use `sdRead()` yet, I assume tha...

AH HAH! I made a mistake in the state transitions, doubling the effective BAUD rate! Now, the full code should be working. I tested single characters and sdRead(). Despite that sometimes it misses characters, probably due to a filled queue buffer, the code should fully work! Not many configurable op...

Also, pressing space gives -4, Q_FULL, while anything else gives Q_TIMEOUT, and pressing enter gives nothing... Am I really wrong about how the serial works here?

Toggling an LED shows that for some reason the system reads an input around every second, even when I am not typing... Now I am afraid that I also need to debug my USB-TTL cable... Well, I used a 3.3V cable... And switching the board to 3.3V removed this particular issue. However, I still get many s...

Ok, got it to work! You won't believe this but the problem is the ISR vector. Your where defining it like this: #define AVR_SDS_RX_VECT PCINT0_vect But it actually is this: #define AVR_SDS_RX_VECT INT0_vect So the MCU was resetting because there was not INT0 handler! Also in the block where you wri...

Now I splitted the state machines, and RX and TX no longer conflict! So transmission is working correctly. However, now I cannot receive anything... Not sure whether it is a OS thing or my code. I am way too depleted of glucose to continue today :( https://pastebin.com/jziyaC0r Note that I doubled t...