There are many many reasons you might want to use an RTOS. They are varied & the degree to which they apply to your situation is hard to say. (Note: I tend to think this way: RTOS implies hard real time which implies preemptive kernel…) Rate Monotonic Analysis (RMA) – if you want to use … Read more
I’ve used both uIP and lwIP extensively. uIP Great if youre only wanting something basic like a bootloader Small footprint. Uses polling so we’ve never got over 3kbit with it 🙁 No DHCP ‘out of the box’ Poor UDP support lwIP Fully interrupt driven so much faster (~ x10) Includes DHCP with failover AutoIP UDP … Read more
Have you considered HDLC or SDLC? There’s also LAP/D (Link Access Protocol, D-Channel). Uyless Black’s “Data Link Protocols” is always nearby on my bookshelf – you might find some useful material in there too (even peruse the TOC & research the different protocols)
From the kernel’s perspective, see /usr/src/linux/Documentation/firmware_class/README: kernel(driver): calls request_firmware(&fw_entry, $FIRMWARE, device) userspace: – /sys/class/firmware/xxx/{loading,data} appear. – hotplug gets called with a firmware identifier in $FIRMWARE and the usual hotplug environment. – hotplug: echo 1 > /sys/class/firmware/xxx/loading kernel: Discard any previous partial load. userspace: – hotplug: cat appropriate_firmware_image > \ /sys/class/firmware/xxx/data kernel: grows a buffer in … Read more
As of version 1.6.6, the Arduino IDE enables C++11 by default. For older versions, read on: It is very easy to change the flags for any element of the toolchain, including the assembler, compiler, linker or archiver. Tested on the Arduino IDE version 1.5.7 (released on July 2014), Locate the platform.txt file, AVR architecture => … Read more