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HELP!!----I want to know how to convert HEX coming from pic16f877 to ASCII in order to send message to the GSM module for it to be read easily.. thanks!
Well if you can not set the output to ASCII, you could allways use an EPROM as a look up table. Great oldskool trick. Use the output of the PIC device (or anything else really you want converted) and connect them to the Address lines of the eprom, therefor for each unique address the data contined within the EPROM is the desired ASCII conversion. I did this a long time ago in college for a single chip converter solution...this was back in the 80s I must add. Choose the right EPROM, I used a 2716 which outputs 8 bits out. if your PIC data is wide use a larger chip to meet the data to address size requirement.
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