uploading a file from the server MCU to the computer system :

[nikhilrajg]

Hello,


How to upload a file directly from the running microcontroller ? I mean I am going to connect my PIC24F to the router via Wi-Fi connectivity. So now I want to upload a full file through wi-fi directly from the MCU to the computer. At the end I should see the file in one of the folders. So that I can access it from the web page.


From the demo app of Microchip's TCp/IP stack there is a code for Potentiometer..(Can be tried on Explorer-16 demo board) which displays the data directly on the web page. So I want this data should be stored inside a file. How to do this?


I tried this,, to create a file and append the content of the file as the data comes in..

void HTTPPrint_pot(void)
{    
	BYTE AN0String[8];
	WORD ADval;
        FILE *file;
        file = fopen("file.txt","a+"); 
     #if defined(__18CXX)
                  // Wait until A/D conversion is done
                  ADCON0bits.GO = 1;
                  while(ADCON0bits.GO);

                 // Convert 10-bit value into ASCII string
                ADval = (WORD)ADRES;
                //ADval *= (WORD)10;
                //ADval /= (WORD)102;
               uitoa(ADval, AN0String);
     #else
	        ADval = (WORD)ADC1BUF0;
	       //ADval *= (WORD)10;
	       //ADval /= (WORD)102;
             uitoa(ADval, (BYTE*)AN0String);
     #endif


	fprintf(file,"%d",ADval);
   	TCPPutString(sktHTTP, AN0String);     //AN0String);
	fclose(file); 
}

Please someone do help... This is not working !!!



Thank you.
Regards.
Nikhil Raj.

 

[bigdogguru]

One method would be to initiate a FTP transfer.

I believe there are examples demonstrating the use of the FTP Protocol by the Microchip TCP/IP Stack.

BigDog

 

[nikhilrajg]

Thanks Bigdog for your reply..

Is'nt it possible using HTTP ? Anyways the data will be sent to the web page. Only the problem is to store that in a file.

Thank you.
Regards.
Nikhil Raj.

 

[bigdogguru]

Possibly.

I've personal only used the FTP Protocol to transfer a file.

Have you implemented SD or MSD Flash Card storage?

BigDog

 

[nikhilrajg]

Hello,
No I haven't used such external storage. I have got a robot where I am not storing anything and I have designed a microphone circuit and want to add to the robot to lively record the voice. So I am not going to store anywhere on the external memory. I want that recorded data to be stored in the computer system which is connected via wi-fi router.

Well better to try with the FTP as you said. Thank you.

Regards.
Nikhil Raj.