rtos

ankur_r

... ... ge_o02_s00 http://www.amazon.in/ESP32-Wifi-Bluetoo ... ge_o04_s00 What additionally hardware, circuit, tool chain with noobs, ubuntu, rtos is needed ?? ---Thanks Ankur

ankur_r

... What additionally hardware, circuit, tool chain with noobs, ubuntu, rtos is needed ?? -- Thanks. Ankur

Andre87

... armv6l GNU/Linux pi@raspberrypi:~ $ sudo vcdbg log assert 334035.848: assert( (uint32_t)handle < g_mgr.num_handles ) failed; ../../../../../vcfw/rtos/common/rtos_common_mem.c::get_header line 869 rev 1960634 vcdbg_ctx_get_dump_stack: dump_stack failed ---------------- 334035.911: assert( is_aligned_32(g_mgr.handles[handle].header) ...

LdB

... all have their huge issues and benefits. I am a professional programmer as well in the CNC/Robtics market so different to you and mainly I have RTOS systems. I do skylight on Unity and Unreal Engine mainly because they are very close to our anti-collision systems on their colliders so I probably ...

Best thread necro of the week. 4 years or thereabouts.

Not sure the PI3 is suitable as Linux is not a RTOS that can handle to requirements.

W. H. Heydt

... information on such systems. (And, if it comes to that, AT&T developed a real time unix kernel for use in central office switches, so the whole RTOS issue has also been solved, for unix if not Linux.)

Gavinmc42

... over a year ago. Still only have something that is about as secure as Win98, next year maybe WinXP? Have the big boys a solution? all those RTOS providers. Embedded CM users might come up with something, but they are the ones most likely to stay silent. What ever your software does, protecting ...

Adagio_Leopard

... But let me clarify. I meant. With a dedicated kernel in a linux OS that reads the GPIO and writes it as an object. Will that be as fast as a RTOS? So the question is, why do you want your timer for? Why do you think you need a RT kernel ? I want to make an oscilloscope out of a Compute Module. ...

dwelch67

... have to implement that in bare metal. It starts to become a question of are you really wanting bare metal, and maybe you should be looking at an RTOS or other OS. If you want the OS experience and not the baremetal experience, then dont program baremetal...

Gavinmc42

... and the OS if one is used. For headless could the ARM do the comms and ap and the VC4 do the RT stuff? ThreadX is not open source. http://rtos.com/products/threadx/licensing Just guessing, ThreadX plus propriety stuff from BCM is what runs in start.elf. Is the VC4 a microcontroller? Could ...

hippy

... can; it's always possible to run code only in the GPU and never even enable the ARM CPU(s). Sure, have you the source and compiler for the ThreedX RTOS on the VC4? Nope. I write GPU (VPU?) assembler, create a bootload.bin, boot and execute that. I am not advocating using a Pi this way, was just ...

Gavinmc42

... can; it's always possible to run code only in the GPU and never even enable the ARM CPU(s). Sure, have you the source and compiler for the ThreedX RTOS on the VC4? Then we can go back and hack all those old iPods etc that have VC1, 2, 3? Not saying it cannot be done as others have done it and compilers ...

Gavinmc42

... not programmed into the on chip flash of a SoC. That's called embedded programming so I guess it is really embedded coding not baremetal. Is it an RTOS? Well it's not really real time and not really an OS, but it could be. FreeRTOS without the need to do RT or OS, QNX, EmbOS, ThreadX, VxWorks, ...

skspurling

... older general purpose PC running beside an Arduino. So, it's kind of a kicked up Arduino, not an embedded general purpose computer like a Pi. Your RTOS for the Currie enables some higher level coordination, but this is a real time MCU that is built for real time interactive tasks. What you say ...

budius

... SoC'? Part number? How is it connected? I just added to the post: The bluetooth SoC is a based off a Nordic nRF51. It's running project Zephyr RTOS hci_uart sample . Only changes made to this sample is: pins used for comms and added a blinking LED to assure CPU is running.

budius

... to attach a UART bluetooth SoC to the Raspberry Pi 3 Compute Module. The bluetooth SoC is a based off a Nordic nRF51. It's running project Zephyr RTOS hci_uart sample . Only changes made to this sample is: pins used for comms and added a blinking LED to assure CPU is running. What have been done ...

tpylkko

... (i.e 32-bit RISC), not a "two core x86 processor". So, it's kind of a kicked up Arduino, not an embedded general purpose computer like a Pi. Your RTOS for the Currie enables some higher level coordination, but this is a real time MCU that is built for real time interactive tasks. What you say ...

skspurling

... a 32 bit ARC core (The traditional Arduino part). So, it's kind of a kicked up Arduino, not an embedded general purpose computer like a Pi. Your RTOS for the Currie enables some higher level coordination, but this is a real time MCU that is built for real time interactive tasks. The Yun is an ...

skspurling

... Btw. I believe that this The Arduino is not RTOS based. The Arduino doesn't really have an OS, it's basically just your-code-plus-libraries on top of bare metal. is probably not true any more. Arduinos used to use 8-bit AVR microprocessors with ...

tpylkko

... as much as possible and even then it is not going to last long if you need to send a lot of stuff when you wake. The ESP32 has a OS, usually FreeRTOS, which is a real time operating system. It schedules tasks on the two cores in the background for you. This makes it easier to use, and it also ...

ReActiveMicro

... Pi. However I know USB is very fast with larger chunks of data, but not so good with smaller chunks do to all the handshaking. Same with Ethernet. RTOS? I know Linux isn't good with dealing with IOs in real time. I found a RTOS option, however it doesn't seem really viable for the Pi 3. Latches ...

CarlRJ

... up, spin for a few seconds, and shut back down) - as a Linux-based system, it's really intended to be on all the time. Should I stick with an RTOS based microcontroller such as an arduino instead? The Arduino is not RTOS based. The Arduino doesn't really have an OS, it's basically just your-code-plus-libraries ...

skspurling

... Is the Pi a good fit for ePaper even though it is power hungry and run a full OS? Sleep modes are also pretty immature. Should I stick with an RTOS based microcontroller such as an arduino instead? I think it would be an awesome ePaper platform. It's finding the displays that's the issue. There ...

waskerley

... Is the Pi a good fit for ePaper even though it is power hungry and run a full OS? Sleep modes are also pretty immature. Should I stick with an RTOS based microcontroller such as an arduino instead?

Python is inherently unpredictable at the sort of levels you are looking at. You would probably need to move to C or C++ for better and more predictable performance. There is also the fact that Linux is not a RTOS so that also introduces unpredictability/latency.

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