PIC16F877 + sim900d.,asking for help

[alexnovice]

hi
im using pic16f877 and sim900d. i just want to connect pic16f877 to sim900d but i dont know where would i start., hope you will understand., sorry for my poor english., please help me., thanks .,

 

[thunderboympm]

first you need to understand about the at commands that is used for the module sm900 and then look the datasheet of pic16F87X for USART. Then send at commands to the module using that serial port

 

[alexnovice]

can you give me an idea about the USART?

 

[thunderboympm]

use pic datasheet for more details. There are 5 registers involve in this communication. Simply it is a serial cammunication protocol