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#include "casio-get.h"
#define SMALL_PACKET_WAIT 100
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void print_checksum_msg(unsigned char expected, unsigned short actual)
{
fprintf(stderr, "Checksum\t: %s (needed 0x%x, found 0x%x)\n", expected==actual? "OK" : "BAD", expected, actual);
}
int main()
{
unsigned int read;
unsigned char temp_buffer[1024];
unsigned char rx_buffer[65536];
setbuf(stdout, NULL);
memset(rx_buffer, 0, sizeof(rx_buffer));
long expected;
unsigned int x,y;
unsigned char colours = 3;
unsigned char colour;
unsigned int i;
struct sp_port *port;
port = port_init("/dev/ttyUSB0");
// Wait for calculator and ACK
wait_calc(port);
send_calc_byte(port, ATTENTION_ACK);
fprintf(stderr,"Sent 0x%x (ACK)\n",ATTENTION_ACK);
/*******************************************
* Receive header packet
*******************************************/
read = calc_read(port, rx_buffer, PKT_HEADER_MAX_SIZE);
fprintf(stderr, "\n== HEADER ========================================\n");
fprintf(stderr, "Size (bytes)\t: %d\n", read);
unsigned char sum_expected = rx_buffer[read-1];
unsigned char sum = calculate_checksum((const char*)rx_buffer+1, (const char*)rx_buffer+read-1);
print_checksum_msg(sum_expected, sum);
for(i = 0; i < read; i++)
printf("%c", (unsigned char)rx_buffer[i]);
colours = 3;
switch (get_packet_type(rx_buffer))
{
/* Screenshot (F<->D button) */
case PKT_SCREEN_HEADER_BW:
colours = 1;
case PKT_SCREEN_HEADER_COL:
send_calc_byte(port, MISC_ACK);
x = rx_buffer[4];
y = rx_buffer[3];
expected = (x*y)/8 + 2;
/* multi-colour images have an extra byte per colour frame for colour identification */
if (colours > 1)
expected++;
fprintf(stderr,
"Data type\t: Screen dump\n"
"Dimensions\t: %d x %d\n", x,y);
fprintf(stderr, "\n== DATA ==========================================\n");
for (colour = 0; colour < colours; colour++)
{
read = calc_read(port, rx_buffer, expected);
fprintf(stderr,"Colour %d/%d read\t: %d bytes\n", colour+1, colours, read);
for(i = 0; i < read; i++)
printf("%c", rx_buffer[i]);
sum_expected = rx_buffer[read-1];
sum = calculate_checksum((const char*)rx_buffer+1+(colours > 1), (const char*)rx_buffer+read-1);
print_checksum_msg(sum_expected, sum);
send_calc_byte(port, MISC_ACK);
}
break;
/* Full memory backup */
case PKT_BACKUP_HEADER:
/* Get firmware name (starts at byte 27 and is hival-terminated */
i = 27;
while((rx_buffer[i] != 0xff) && i < sizeof(temp_buffer))
{
temp_buffer[i-27] = rx_buffer[i];
i++;
}
temp_buffer[i-27] = '\0';
fprintf(stderr, "Memory backup coming (firmware %s)...\n", temp_buffer);
break;
case PKT_FUNCTION_HEADER:
fprintf(stderr, "Function(s) coming...\nNOT IMPLEMENTED\n");
break;
case PKT_VALUE_HEADER:
fprintf(stderr, "Value coming...\nNOT IMPLEMENTED\n");
//break;
case PKT_PROGRAM_HEADER:
fprintf(stderr, "Program coming...\nNOT IMPLEMENTED\n");
//break;
default:
fprintf(stderr, "List(s) coming...\n");
fprintf(stderr, "Matrix/Matrices coming...\n");
fprintf(stderr, "NOT IMPLEMENTEEEED, NOT ANNYYYY OF THIIIIIIS!!!\n");
break;
}
sp_close(port);
return 0;
}
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