/* Status has 2 different symbols, 0, 1 */
void statusTxSymbol(uint8_t symbol){
if (symbol == 0) {
askHigh();
usleep(STATUS_SHORT);
askLow();
usleep(STATUS_LONG);
}
else {
askHigh();
usleep(STATUS_LONG);
askLow();
usleep(STATUS_SHORT);
}
}
/* Send single signal block */
void send_block(long length)
{
askHigh();
wait(length);
askLow();
wait(space_duration);
}
void ook_transmit(const char *filename, int mod)
{
FILE *fd = fopen(filename, "r");
char cmd;
int arg;
int ret;
struct timespec ts;
if (!fd) {
printf("ERROR: Unable to open data file\n");
return;
}
/* Calculate total tx time for calibration */
float took = 0;
struct timeval start, stop;
gettimeofday(&start, NULL);
while (!feof(fd)) {
fscanf(fd, "%c%d\n", &cmd, &arg);
//printf("%c %d\n", cmd, arg);
switch (cmd) {
case 'N':
if (arg == 0) {
continue;
}
//printf("Sleep for %ld\n", ts.tv_nsec);
//for (int X = 0; X < arg/162; X ++) {
// ACCESS(CM_GP0DIV) = (0x5a << 24) + mod + (X/8)%3 - 1 ;
// Going for 0.077
//}
ts.tv_sec = 0;
ts.tv_nsec = arg - 80000;
ret = nanosleep(&ts, NULL);
if (ret != 0) {
printf("Warning nanosleep returned != 0: %d\n", ret);
perror("nanosleep");
return;
}
continue;
case 'S':
if (arg) {
//printf("TX 1\n");
askHigh();
} else {
//printf("TX 0\n");
askLow();
}
continue;
default:
printf("ERROR: Invalid command in data file: %c\n", cmd);
return;
}
}
gettimeofday(&stop, NULL);
took = (stop.tv_sec - start.tv_sec) * 1e6;
took += (stop.tv_usec - start.tv_usec);
took /= 1e6;
printf("Transmission took %10.5f\n", took);
fclose(fd);
return;
}
