uint16_t crc16_signature(uint16_t initial, size_t length, const uint8_t *bytes)
{
size_t i;
for (i = 0u; i < length; i++) {
initial = crc16_add(initial, bytes[i]);
}
return initial ^ CRC16_OUTPUT_XOR;
}
static uint16_t
sendx_crc16(unsigned char b, uint16_t crcacc)
{
gcr_encode(b);
GCRLOG("(%02x)", b);
crcacc = crc16_add(b, crcacc);
while(gcr_get_encoded(&b)) {
send(b);
GCRLOG("C%02x ", b);
}
return crcacc;
}
/*---------------------------------------------------------------------------*/
static void
handle_get_command(void)
{
int fd = 0;
fd = cfs_open("cp", CFS_READ);
if(fd < 0) {
printf("ERROR: No file access (get)\n");
} else {
PRINTF_COMMAND("GET:START\n");
char data[8];
int offset=0, size=0, read=8;
unsigned short crc = 0;
cfs_seek(fd, offset, CFS_SEEK_SET);
while (read == 8) {
int i;
/*if(offset != cfs_seek(fd, offset, CFS_SEEK_SET)) {
printf("bad seek, breaking\n");
break;
}*/
read = cfs_read(fd, data, 8);
size += read;
printf("%04i: ", offset); /*REMOVE*/
for (i=0; i < read; i++) {
crc = crc16_add((uint8_t) data[i], crc);
printf("%02x", (uint8_t) (0xff&data[i]));
}
printf("\n");
offset += 8;
}
PRINTF_COMMAND("GET:DONE CRC=%u\n", crc);
cfs_close(fd);
}
}
