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tools/atrf-txrx/atrf-txrx.c: new option -x to interpret messages as hex strings

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This commit is contained in:
Werner Almesberger 2013-06-23 01:55:58 -03:00
parent bb6acf15bc
commit a523e8d645
1 changed files with 53 additions and 6 deletions
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57
tools/atrf-txrx/atrf-txrx.c
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@ -272,9 +272,45 @@ static void receive(struct atrf_dsc *dsc, const char *name)
}
static void transmit(struct atrf_dsc *dsc, const char *msg, int times)
static int dehex(uint8_t *buf, const char *s)
{
uint8_t *p;
int nibbles = 0;
uint8_t v = 0, nibble;
char cvt[2] = "?";
char *end;
for (p = buf; *s; s++) {
if (strchr(" \t,.:-", *s)) {
if (nibbles)
*p++ = v;
nibbles = 0;
continue;
}
cvt[0] = *s;
nibble = strtoul(cvt, &end, 16);
if (*end) {
fprintf(stderr, "invalid hex character \"%c\"\n", *s);
exit(1);
}
if (nibbles) {
*p++ = v << 4 | nibble;
nibbles = 0;
} else {
v = nibble;
nibbles++;
}
}
if (nibbles)
*p++ = v;
return p-buf;
}
static void transmit(struct atrf_dsc *dsc, const char *msg, int hex, int times)
{
uint8_t buf[MAX_PSDU];
int len;
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
/*
@ -286,8 +322,13 @@ static void transmit(struct atrf_dsc *dsc, const char *msg, int times)
/*
* We need to copy the message to append the CRC placeholders.
*/
if (hex) {
len = dehex(buf, msg);
} else {
strcpy((void *) buf, msg);
atrf_buf_write(dsc, buf, strlen(msg)+2);
len = strlen(msg);
}
atrf_buf_write(dsc, buf, len+2);
while (run && times--) {
/* @@@ should wait for clear channel */
@ -590,13 +631,15 @@ static void die(int sig)
static void usage(const char *name)
{
fprintf(stderr,
"usage: %s [common_options] [message [repetitions]]\n"
"usage: %s [common_options] [[-x] message [repetitions]]\n"
" %s [common_options] -H [message]\n"
" %s [common_options] -E pause_s [repetitions]\n"
" %s [common_options] -P [max_wait_s]\n"
" %s [common_options] -R [-H|packets size]\n"
" %s [common_options] -T offset [command]\n\n"
" text message mode:\n"
" -x message consists of hex bytes, optionally separated by\n"
" ' ', '.', ',', ':', or '-'\n"
" message message string to send (if absent, receive)\n"
" repetitions number of times the message is sent (default 1)\n\n"
" text message mode (hard MAC):\n"
@ -662,6 +705,7 @@ int main(int argc, char *const *argv)
int trim = DEFAULT_TRIM, times = 1, bytes;
uint8_t cont_tx = 0;
double pause_s = 0;
int hex = 0;
char *end;
int c, freq;
unsigned clkm = 0;
@ -669,7 +713,7 @@ int main(int argc, char *const *argv)
const char *pcap_file = NULL;
struct atrf_dsc *dsc;
while ((c = getopt(argc, argv, "c:C:d:E:f:Ho:p:Pr:Rt:T:")) != EOF)
while ((c = getopt(argc, argv, "c:C:d:E:f:Ho:p:Pr:Rt:T:x")) != EOF)
switch (c) {
case 'c':
channel = strtoul(optarg, &end, 0);
@ -751,6 +795,9 @@ int main(int argc, char *const *argv)
else
usage(*argv);
break;
case 'x':
hex = 1;
break;
default:
usage(*argv);
}
@ -830,7 +877,7 @@ int main(int argc, char *const *argv)
switch (mode) {
case mode_msg:
set_power_dBm(dsc, power, 1);
transmit(dsc, argv[optind], times);
transmit(dsc, argv[optind], hex, times);
break;
case mode_hmac:
set_power_dBm(dsc, power, 1);