Tagged Questions

4
votes
1answer
228 views

Microcontrollers with extreme high temperature range

I am looking for components which works at high temperature. Especially I am looking for microcontrollers which works at 180 °C to 200 °C. I am designing downhole electronics for oil and gas ...
2
votes
2answers
135 views

ExternalDifferential ADC Values for PIC

I have a temperature sensor design that I'm using as a reference. It takes 2 RTD sensors and reads their values with a Dual Channel 16-bit Differential ADC. The ADC interfaces through the SPI bus. ...
7
votes
4answers
285 views

Can individual pins of different port of a microcontroller be mapped to a register and their values be changed when changing the register value?

Q: Can individual pins of different port of a micro-controller be mapped to a register and their values be changed when changing the register value? Scenario: I have used up some pins from each ...
5
votes
4answers
748 views

How to Wire a PIC Microcontroller?

I'm completely new to the world of PIC Microcontrollers and electrical engineering so please go easy :) Anyway, I managed to program my PIC 16f627 to turn on three LEDs when push button (trigger ...
2
votes
3answers
432 views

Which schematic is better for keypad connection to an MCU?

I have this three keypad connection sketches, all of which i've seen in various application, and some i've also used, but i want to know if there is any advantage of one over the other. The keypad ...
1
vote
0answers
401 views

PIC32 SPI ISR not being called when RXIF flag set?

I'm using a PIC32MX795F512L SPI3 module in slave mode. My master is sending data over the SPI line but my slave's interrupt service routine is never being called. The RX interrupt flag is being set ...
1
vote
1answer
360 views

Calculating Delay

I want create one milisecond time delay. But, I don't know how to do it because I could not use following three variable in an equation, if there is. Can you help me to creating one milisecond time ...
3
votes
4answers
897 views

Can i implement a wireless connection between an embedded system and a mobile phone?

I'm trying out an automation system, and i was wondering if it is possible to communicate over, say WIFI between a mobile application and an embedded systems based arduino ethernet shield or microchip ...
2
votes
2answers
597 views

PIC16F877 analog pin configuration

I've been working with PIC16F877. Can someone please explain how to configure its pins to be analog or digital? I saw somewhere that we need to configure ADCON1, ...
1
vote
4answers
876 views

First PIC microcontroller family to learn? and resources? development board?

The only experience I have with micro controllers is with the arduino. I felt extremely limited by the arduino especially in the cases of embedded design. I'm interested in completing a number of ...
3
votes
1answer
567 views

Interfacing with SD card in Graphics Display Designer (MicroChip)

I have a PIC24 chip, a TFT screen, and a SD card reader/SD card. The software I'm using is MPLAB v8 and Graphics Display Designer addon. What I want to do is use Graphics Display Designer in MPLAB to ...
1
vote
1answer
645 views

Compiler / Assembler (Toolchain) for PIC micro's using Ubuntu 11.04

I used to use Hi-Tide from Hi-Tech before they were purchased by MPLab. In my opinion it was great. I wrote the C code, selected the processor and out popped a hex file. I've now migrated to Ubuntu ...
1
vote
2answers
303 views

Hardware to Detect EMG or Skin Resistance

I have been given assignment to design a device that can detect emg signal of Skin Resistance change while moving fingers. actually i need to track finger movements using some hardware containing ...
38
votes
9answers
2k views

RTOS for Embedded Systems

I have seen many articles that tell me I should be using RTOS for time management and resource management. My time has not permitted my own research, so I come to chiphacker for advice. I use low ...