Matrix user forums

chad528@cox.net

I am using the 16F877A

I want to flash an LED On and Off every 500ms during the execution of my program to show that the program is running without impacting the rest of the program timing. I was thinking of using the TMR0 interrupt. I created the interrupt and put in the LED routine into the macro. However, I do not know...

I believe that I may be having a timing issue. If I input the characters as quick as I can, I increase my success with the response. If I put characters in slow, I do not get a response.

I am having a problem seeing responses from the PIC in Hyperterminal. I have run a test program to send text and that works O.K. In my program I loop 2 times to receive an "RS" in an array from the com port. I then check for an "R" and then an "S". I then populate a 6 character array and then loop 6...

Thank you so much. Now I am understanding how to work things and I can configure my program setup.

I did not know that I had to setup the chip in Flowcode if I was just loading the RS232.Hex file. Do I create a new flowcode program with nothing in it and configure the chip, then go to PPP to load the Hex file? I do not understand the process for just testing that the RS232 board communicates corr...

No, I have not set the chip baud rate. How do I do this, I cannot find it in the manual?

Thanks for your reply.

Chad

I programmed the 16F877A with the RS232.hex file. I setup Hyperterminal as per the instructions for the board. I cannot see any communication. The call button is greyed out on Hyperterminal, which indicates some kind of connection, I think. My RS232 cable is a one to one pinout. Could this be the pr...

Are there any documents that explain how to properly use the RS232 macro. Anything I send outputs an *.

In addition, I am new to flowcoding and PICs and would appreciate any suggestions or tips.

Thanks,
Chad