File content as of revision 3:c8b4b823b01c:

#include "mbed.h"

Serial pc(SERIAL_TX, SERIAL_RX);
SPI lepton_spi(SPI_MOSI, SPI_MISO, SPI_SCK);
DigitalOut spi_cs(SPI_CS);

#define VOSPI_FRAME_SIZE (164) 
uint8_t lepton_frame_packet[VOSPI_FRAME_SIZE]; 
int lepton_image[80][80];


int print_image_binary_state =-1;
int print_image_binary_i;
int print_image_binary_j;

static void print_image_binary_background(void)
{
    if( print_image_binary_state == -1)
    {
        return;
    }
    else if( print_image_binary_state == 0)
    {
        pc.putc(0xDE);
        print_image_binary_state++;
    } 
    else if( print_image_binary_state == 1)
    {
        pc.putc(0xAD);
        print_image_binary_state++;
    } 
    else if( print_image_binary_state == 2)
    {
        pc.putc(0xBE);
        print_image_binary_state++;
    } 
    else if( print_image_binary_state == 3)
    {
        pc.putc(0xEF);
        print_image_binary_state++;
        print_image_binary_i = 0;
        print_image_binary_j = 0;
    } 
    else if( print_image_binary_state == 4)
    {
            while(pc.writeable() == 0);
            pc.putc((lepton_image[print_image_binary_i][print_image_binary_j]>>8)&0xff);
            while(pc.writeable() == 0);
            pc.putc(lepton_image[print_image_binary_i][print_image_binary_j]&0xff);
            
            print_image_binary_j++;
            if(print_image_binary_j>=80)
            {
                print_image_binary_j=0;
                print_image_binary_i++;
                if(print_image_binary_i>=60)
              {
                  print_image_binary_state = -1;
              }
              }
    }

}



int lost_frame_counter = 0;

int last_frame_number;
int frame_complete = 0;
int start_image = 0;
int need_resync = 0;
int last_crc;
int new_frame = 0;
int frame_counter = 0;

void transfer(void)
{
    int i;
    int frame_number;

    
    spi_cs = 0;
    for(i=0;i<VOSPI_FRAME_SIZE;i++)
    {
        lepton_frame_packet[i] = lepton_spi.write(0x00);
    }
    spi_cs = 1;
    

    if(((lepton_frame_packet[0]&0xf) != 0x0f))
    {
        if(lepton_frame_packet[1] == 0  )
        {
            if(last_crc != (lepton_frame_packet[3]<<8 | lepton_frame_packet[4]))
            {
                new_frame = 1;
            }
            last_crc = lepton_frame_packet[3]<<8 | lepton_frame_packet[4];
        }
        frame_number = lepton_frame_packet[1];
        
        if(frame_number < 60 )
        {
            lost_frame_counter = 0;
            if(print_image_binary_state == -1)
            {
                for(i=0;i<80;i++)
                {
                    lepton_image[frame_number][i] = (lepton_frame_packet[2*i+4] << 8 | lepton_frame_packet[2*i+5]);
                }
            }
        }
        else
        {
            lost_frame_counter++;
        }
        if( frame_number == 59)
        {
            frame_complete = 1;
            last_frame_number = 0;
        }
    }
    else
    {
        if(last_frame_number ==0)
        {
        }
    }

    lost_frame_counter++;
    if(lost_frame_counter>100)
    {
        need_resync = 1;
        lost_frame_counter = 0;

    }

    if(need_resync)
    {
        wait_ms(185);
        need_resync = 0;
    }


    if(frame_complete)
    {
        if(new_frame)
        {
            frame_counter++;
            {
                if(frame_counter%12 ==0)
                {
                    print_image_binary_state = 0;
                }
            }
            new_frame = 0;
        }
        frame_complete = 0;
    }
}
 
 
int main() 
{
  pc.baud(115200);
  lepton_spi.format(8,3);
  lepton_spi.frequency(20000000);
  spi_cs = 1;
  spi_cs = 0;
  spi_cs = 1;
  
  wait_ms(185);
  
  while(1) 
  { 
      transfer();
      print_image_binary_background();
  }
}