Latest threads in Embedded Programmingshow only best voted threads

Subject Author Posted Replies
 
Algorithms used to calibrate electronic compass (magnetometer) ?
Hi, Modern smartphones etc come with built in magnetometers alowing them to be used as magnetic compasses. The apps for these often have calibration rout ines where you have to turn the "compass"...
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ARM Cortex dev board with Bluetooth, Wifi and CAN?
Hi, Does anyone know of a small cheap ARM Cortex dev board with all of Bluetooth, Wifi and CAN onboard ? STM preferred but I can't find anything suitable in their lineup. Something with good SW...
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gyros
single axis analog gyro Freescale & ST Micro seem to be getting out of the analog gyro business and going to digital "system" types of devices. Analog Devices are too costly for this application, ie...
 
Use of volatile in structure definitions to force word accesses
This question came up in the thread titled "Re: Ada, was: Re: Fundamental C question about "if" statements". I felt it deserved its own thread, because it's far off topic to what's become a very...
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MPLAB C30 problem
Hi I want to use a dsPIC33EP512GM304 but MPLAB tells me... pic30-coff-cc1.exe: error: Invalid -mcpu option. CPU 33EP512GM304 not recognized. MPLAB allows me to select the device type, but there...
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What meaning of the line code with '##'?
Hi, I read the following GPIO description, but I don't understand the line with '##'. Are there some connection with the above paragraph? Thanks, .............................. Accessing such GPIOs...
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How clearing of Diagnostic Trouble Codes(DTC) or Fault Codes work in typical embedded systems ?
Let's say application is Third Row Power Folding Minivan seat. User presses a button. Seat starts moving. There is a obstruction which causes DC motor moving the seat to stop turning almost...
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USB bus powered PIC32 issues ?
While we are talking about Microchip, has anyone tried using the PIC32 as a USB bus powered device in your own circuits and did you have any issues as result ? It's on my todo list in the upcoming...
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Fundamental C question about "if" statements
Learning some embedded C using Microchip's C18 Lite. I tried the following and it misbehaved: if( 10 < my_variable < 20 ) { //do this......} Using the following works: if (( x > 10) & ( x < 20)) {...
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Question about rules of sleeping
Hi, I see a slide on rules of sleeping for RTOS. It says never sleep in atomic context (holding a lock, disabled interrupts etc.). It did not mention semaphore in a sleeping state. I think semaphore...
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LPC2000 CAN project
Greetings! I have just join this group as it might be a good place to have some chat about NXP projects. I want to make OBD2 scanner using one of the LPC chips. Now, I dont have any experience with...
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How to use VCS (git) to save output binary files
I'm very new to VCS and git, so I have some difficulties to use them. I'd like to use git for my embedded projects. I consider a must have featur e the possibility to retrieve the binary file of an...
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RS232 software virtual hub
I often work on small electronic devices that communicates over a multi-drop half-duplex two-wires RS485 network. I usually try to compile all the projects for the developing Windows machine (I use...
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Graphs
Have you already written web applications to render real time data in graphs? The data (relay outputs) are captured by a microprocessor and sent via RS232 to a Raspberry PI running Linux. The data are...
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Can you turn off Pipeline in ARM Cortex M3
Hi I am not an embedded expert, so please be patient I have an application with 6 phase PWM and the CC2650 TI processor does not have deadtime support (to avoid cross conduction in a 3 stage...
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