Удача с электронной книгой.

paracloud

#include <stdio.h>

...
int main (int argc, char* argv[])
{
    struct termios oldtty, newtty;
    fcntl(0, F_SETFL, 0);     //read com-port is the bloking
    tcgetattr(0, &oldtty);
    newtty = oldtty;
    newtty.c_iflag =  IGNBRK;
    newtty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
    newtty.c_oflag = 0;
    newtty.c_cflag &= ~PARENB;
    newtty.c_cflag |= CS8;
    newtty.c_cc[VMIN] = 1;
    newtty.c_cc[VTIME] = 1;
    tcsetattr(0, TCSANOW, &newtty);
    return 0;
}

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>        /* File control definitions */
#include <termios.h>    /* POSIX terminal control definitions */
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <string.h>        /* String function definitions */
#include <unistd.h>

#define resultfile                         "result.img"
#define FBIO_EINK_GET_TEMPERATURE        0x46A1    //Returns temperature in degree Celsius
#define FBIO_EINK_DISP_PIC                0x46A2    //Displays picture

int main (int argc, char* argv[])
{
    struct termios oldtty, newtty;
    char buffer[100];
    printf ("Test recive data\n");
    sleep(1);
    fcntl(0, F_SETFL, 0);     //read com-port is the bloking
    //config UART
    tcgetattr(0, &oldtty);
    newtty = oldtty;
    newtty.c_iflag =  IGNBRK;
    newtty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
    newtty.c_oflag = 0;
    newtty.c_cflag &= ~PARENB;
    newtty.c_cflag |= CS8;
    newtty.c_cc[VMIN] = 1;
    newtty.c_cc[VTIME] = 1;
    tcsetattr(0, TCSANOW, &newtty);

    char *tmp;
    unsigned int count=0, i=0, l;

    ssize_t n;
    
    tmp=malloc(480000);
    while(count<480000)
    {    
        n=read(0,buffer,50);
        count+=n;
        l=0;
        for(;i<n;i++) 
        {
            tmp[i]=buffer[l];
            l++;
        }

    }

    //write old config
    tcsetattr(0, TCSANOW, &oldtty);
    

    int *fb;
    int pio_fd = open ( "/dev/fb0", O_RDWR);
    int f_image = open ( argv[1], O_RDWR);                                 //open file into arg
    int t= ioctl (pio_fd, FBIO_EINK_GET_TEMPERATURE, NULL);    //configure framebuffer

    fb= mmap(0, 800*600, PROT_WRITE, MAP_SHARED, pio_fd, 0);    //map device into memory
    memset(fb,0,800*600);                                        //clear image
    ioctl (pio_fd, FBIO_EINK_DISP_PIC, 0);
    
    memcpy(fb,tmp,800*600);
    ioctl (pio_fd, FBIO_EINK_DISP_PIC, 0);
    
    close(pio_fd);

    return 0;
}