[SOLVED] SM 630 Fingerprint module interfacing with pic18f4550

mohamedbasheerkp said:

Hello all,
I am using SM-630 fingerprint module for my project. I have to interface it to PIC18f4550. I am using "mikroc pro for pic" compiler for my development purposes. But the module is not responding. As the datasheet suggested, I am using pullup resistor for tx pin. I interfaced to the computer and analysed using Realterm serial capture program. I tried to read the product id of the module both from PIC and PC. I used "0x4D 0x58 0x10 0x01 0x60 0x16" in order. but the module is not responding. I tried the following code to read the product id to the microcontroller.

I removed the declaration part of the code.

Code:

uart1_init(57600);
       delay_ms(100);
       uart1_write(0x4D);                  //packet head
               while(!UART1_Tx_Idle());
      uart1_write(0x58);                  //packet head
                while(!UART1_Tx_Idle());
      uart1_write(0x10);                  //command flag
                 while(!UART1_Tx_Idle());
      uart1_write(0x01);                   //packet length
                  while(!UART1_Tx_Idle());
      uart1_write(0x80);
                  while(!UART1_Tx_Idle());
      uart1_write(0x36);
                  while(!UART1_Tx_Idle());
                  
      for(count=6;count>=0;count--)
      {   while(!UART1_Data_Ready());
          datain = UART1_Read();
      }
while(!UART1_Data_Ready());
       uart1_read();
                    while(!UART1_Data_Ready());
       uart1_read();
                    while(!UART1_Data_Ready());
       uart1_read();
                    while(!UART1_Data_Ready());
       uart1_read();
                    while(!UART1_Data_Ready());
       uart1_read();

       for (count=0;count<=23;count++)
       {   
                    while(!UART1_Data_Ready());
       id[count]=uart1_read();

       }
                     while(!UART1_Data_Ready());
       uart1_read();

I received datas sending from the microcontroller in pc using RealTerm. But the module is not responding. I used PIC's internal usart module and mikroc library for usart. Also using LCD. In order to reduce code, here, I removed that part also. PIC is working in 20Mhz frequency. Any help is welcomed...


Thanks,
basheer

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