Software UART reception failure

[helmi_mjd]

Hi guys...
I have one problem regarding the software UART. It can transfers a character from Micro-controller but when i try to send from PC (through bluetooth), the micro-controller does not received it. This indicated by LED. Can anyone help me solving this problem? Here i attached the code.
PIC: 18F4520, Programmer: MPLAB IDE, Compiler: Hi-Tech C PIC18 (PRO)

 

[andre_luis]

You are not using interruption to handle reception, and polling is not a good approach.
Take a look here to inspire at some implementations :




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[helmi_mjd]

You are not using interruption to handle reception, and polling is not a good approach.
Take a look here to inspire at some implementations :




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Thanks andre_teprom for fast reply. I will follow your suggestion and will let you know the after i make changes. Thanks again.

 

[helmi_mjd]

Hi andre, i already edit my code using reception interrupt but i still can't get the result. Could you please check my interrupt routine/any other part of my code is incorrect? Attached is the code. I used pin change interrupt for reception at RB7.

 

[andre_luis]

helmi_mjd,


Taking a quick overview, I noticed the following issues :

• You inserted a delay into reception routine, which is not recomended;
• You used interrupt based on pin-change, not properly based on uart reception itself;

Once I admit did not performed a more accurate analysis, and pehaps could happen other problems, I sugest you try compile other working examples, and just after, extract fragments to your code.


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