hi,
I am using a development board in which when i am dumping some small programs like glowing an led also it is not working ... I think the microcontroller is not working.
So can anyone please tell me how can i identify the problem. Especially how can i know if microcontroller is working or not.
hi,
I am using a development board in which when i am dumping some small programs like glowing an led also it is not working ... I think the microcontroller is not working.
So can anyone please tell me how can i identify the problem. Especially how can i know if microcontroller is working or not.
Have you checked your crystal?
Have you tried all the ports?
The tolerance of most of microcontrollers in input mode is +5v(max)
So, your +12V might have damaged that pin.
If your controller pins are configured in push pull mode try to measure the voltage on them after configuration before running the code.
If you using high frequency osc then you need at least 5V power supply. Also need to turn off watch dog timer WDT. Also check reset pin mc**
And build a simple program to blink or just light leds on and off. Also you for sure need to include right header file. For example pic16F887.h This file uses c code to send right c code instruction to right places in MCU.
Try to find .hex files on internet. it worked for me.
there is a possibility that your programmer do not work due low voltages from your PC. solution should be another desktop PC.
12 volts? it doesn't take much over 6 volts to fry a pic. Read the data sheet.
When you try another pic use a volt meter to test you input and output to see if its working.
when ever i try to load hex file to 89s52 by asim khan,s software it shows " no response from mc" wat may be the problem?? i have build the ckt correctly... how can check my mc working or not??
use asimkhan software version isp v3.0. you can download it from the above site.
i also faced similar problems with higher isp version.
the programmer cable is simple and easy to design
hi,
I am using a development board in which when i am dumping some small programs like glowing an led also it is not working ... I think the microcontroller is not working.
So can anyone please tell me how can i identify the problem. Especially how can i know if microcontroller is working or not.