http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T21:44:20-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t6661.html 2009-01-07T21:44:20-08:00 hello admin,i have a problem reading the 10-bit right justified 2 byte data from the PIC. i'm using matlab to read the ADC. here is my PIC C code;CODE:main()
{
   long int adcValue;                     //16-bit A2D reading storage
   char adcHI, adcLO;                     //8-bit real time frames storage
   setup_adc_ports(A_ANALOG);             //set all ADC pins to analog
   setup_adc(ADC_CLOCK_INTERNAL);         //enable A2D module
   set_adc_channel(0);                    //read channel 0
   delay_us(20);                          //delay for sampling cap to charge
   while(TRUE)
   {
      adcValue = read_adc();                    //start conversion
      adcHI = (char)((adcValue>>5)& 0x1f);      // 0|0|0|d9|d8|d7|d6|d5
      adcLO = (char)((adcValue & 0x1f)|0x80);   // 1|0|0|d4|d3|d2|d1|d0
      putc(adcHI);                              // Transmit Byte 1 (d9...d5)
      putc(adcLO);                              // Transmit Byte 2 (d4...d0)
      delay_ms(5);                             //small delay before read
   }
}using hyperterminal and other serial port monitors, i can get the ADC data. but with matlab it gives me the error: inputBufferSize must be greater than zero which means no data is in the port. initialization of the serial port with the matlab code was made, serial object creation, serial settings; BaudRate @9600 as with the PIC,8bits, Parity=noneCODE: s = serial('COM1');
   fopen(s);
   set (s, 'BaudRate', 9600);
   data = fread(s,s.BytesAvailable);
   n = length(data);
i=1;
   while (i<n/2)
   {
   }
   end
   fclose(s);
   delete(s);
   clear(s);how can i decode the 8 bit encoded character send by the pic? http://www.8051projects.net/forum-t6661.html 2009-01-07T21:44:20-08:00 sashijoseph You probably need to specify input buffer size.set(s, 'InputBufferSize', 512) ;