"Boost context" for task switching on embedded Linux on ARM

Started by Anonymous in comp.arch.embedded5 days ago 20 replies

Following on from my recent question about PThreads I have a new question about...

Following on from my recent question about PThreads I have a new question about Boost:context https://www.boost.org/doc/libs/1_67_0/libs/context/doc/html/index.html We have some legacy code(Motorola 68000 C) that we want to use that has cooperative task switching. We want to run it all as a single thread and keep its co-operative organization within that thread. Is "Boost context" a


what's the startup clock frequency of PIC1703

Started by Johann Klammer in comp.arch.embedded5 days ago 9 replies

I'd like to run from internal osc (XTAL pins as GPIO), but from the configuration bits it looks like it defaults to ext clk. I can't seem to...

I'd like to run from internal osc (XTAL pins as GPIO), but from the configuration bits it looks like it defaults to ext clk. I can't seem to find docs on their two speed startup and Fail-safe clock monitor thingy. Also, will LVP work?


I2C with DC10.72D

Started by "Ste...@yahoo.com [rabbit-semi]" in Rabbit-Semi1 week ago 1 reply

I downloaded v10.72D of DC and installed it. In the previous version of 10.72 I have (I don't know what letter version it is),I am using function...

I downloaded v10.72D of DC and installed it. In the previous version of 10.72 I have (I don't know what letter version it is),I am using function I2C_initClk() found in I2C_HW.LIB to switch between a 200kHz clock and a 400kHz clock. But thatfunction is not there in v10.72D. Is there another mechanism provided to do the same thing that I'm not seeing? Steve


C++ threads versus PThreads for embedded Linux on ARM micro

Started by gp.k...@gmail.com in comp.arch.embedded1 week ago 49 replies

We're starting an embedded Linux C++ project with an ARM micro and using GCC V7. Can anyone suggest pros and cons of using C++ Threads versus...

We're starting an embedded Linux C++ project with an ARM micro and using GCC V7. Can anyone suggest pros and cons of using C++ Threads versus PThreads (Posix threads).


How to Solder a Wire to Surface-Mount IC With Pins VERY Close Together?

Started by Anonymous in comp.arch.embedded2 weeks ago 12 replies

We do embedded software, but the hardware is produced by our customer (we don't control it). Sometimes we need to attach a wire (for monitoring...

We do embedded software, but the hardware is produced by our customer (we don't control it). Sometimes we need to attach a wire (for monitoring a serial or I2C interface, or for timing instrumentation) to a surface-mount IC where the pins are VERY close together. The pins are so close together that I can't solder a wire to it, even using high-power optics and the finest soldering i


Macro CC_REV

Started by "Ste...@yahoo.com [rabbit-semi]" in Rabbit-Semi3 weeks ago 1 reply

For DC v10.72, how is macro CC_REV defined?  Is the value going to be 1072D, _1072_D_, etc. I need to know what to test for. Steve

For DC v10.72, how is macro CC_REV defined?  Is the value going to be 1072D, _1072_D_, etc. I need to know what to test for. Steve


I2C with v1.72D DC

Started by "Ste...@yahoo.com [rabbit-semi]" in Rabbit-Semi3 weeks ago

I should have included this with my previous post. It seems that function I2C_WriteToSlaveis also not part of v10.72D. Couldn't a macro have been...

I should have included this with my previous post. It seems that function I2C_WriteToSlaveis also not part of v10.72D. Couldn't a macro have been defined to provide backward compatibility? Steve


FTP server

Started by Martin Kaul in comp.arch.embedded3 weeks ago 5 replies

Hi, does anyone know an FTP server for embedded systems. best regards & thanks Martin

Hi, does anyone know an FTP server for embedded systems. best regards & thanks Martin


FreeRTOS memory footprint reduction at build time

Started by John Speth in comp.arch.embedded1 month ago 5 replies

Hi Folks- FreeRTOS has a build config file (FreeRTOSConfig.h) that users can apply at build time to customize the RTOS. The FreeRTOS web...

Hi Folks- FreeRTOS has a build config file (FreeRTOSConfig.h) that users can apply at build time to customize the RTOS. The FreeRTOS web site has a page to describe the options (https://www.freertos.org/a00110.html). What it doesn't have is any hints about how much RAM it might save me. Does anybody have any first hand advice about how much RAM each option might contribute to the R...


programming serial lcd [2 Attachments]

Started by "aj-...@blueyonder.co.uk [piclist]" in Piclist1 month ago 1 reply

Has anyone had any experience using the erc802-1 series of serial (i2c) lcd modules ? I have not yet succeeded with getting mine to display...

Has anyone had any experience using the erc802-1 series of serial (i2c) lcd modules ? I have not yet succeeded with getting mine to display anything and any suggestions would be most welcome. This is what I am doing - I am using the power-on reset with the reset input wired to +5v. In software I wait for about 50ms after switch on, then execute code which produces the clock (yellow) and dat...


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