[SOLVED] Please assist i am having gsm problems

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Ramadzanga

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Good day

can someone please assist, I am using an PIC18 (18F8722) explorer board together with a SIM928 EVB board
the problem that I am having is that when I connect my micro controller board together with the EVB board I am unable to receive any SMS
I am able to receive an SMS if I connect my EVB board directly with the computer,and I am also to verify that my PIC is sending the right AT commands
when I connect the micro to the computer I receive those AT commands on my terminal Program, I am using the MikroC compiler version 6.5.0
my simple code is attached below


Code C - [expand]
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void main(){
 
            UART1_Init(9600);
            delay_ms(3000);
            
            UART1_Write_Text("AT");
            UART1_Write(0x0D);
            delay_ms(1500);
 
            UART1_Write_Text("AT+CMGF=1");
            UART1_Write(0x0D);
            delay_ms(2000);
 
            UART1_Write_Text("AT+CMGS=\"xxxxxxxxxx\""); // using my ten digit cell number
            UART1_Write(0x0D);
            delay_ms(2000);
 
            UART1_Write_Text("IT is working");
            UART1_Write(0x0D);
            UART1_Write(0x01);
 
            }
 
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