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atrf-txrx: new option -C to control CLKM output

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- atrf-txrx.c (usage, main): added option -C mhz to enable the CLKM output
  and to set its frequency
- atrf-txrx.c (init_txrx): if requested, enable CLKM and set to maximum
  drive strength
This commit is contained in:
Werner Almesberger 2011-01-12 19:13:21 -03:00
parent 6ff235e8ea
commit cb7afe132d
1 changed files with 29 additions and 5 deletions
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34
tools/atrf-txrx/atrf-txrx.c
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@ -60,7 +60,12 @@ static double tx_pwr_231[] = {
static volatile int run = 1;
static struct atrf_dsc *init_txrx(int trim)
/*
* clkm: 0 disable CLKM
* >0 output 2^(clkm-1) MHz signal
*/
static struct atrf_dsc *init_txrx(int trim, unsigned clkm)
{
struct atrf_dsc *dsc;
@ -70,13 +75,19 @@ static struct atrf_dsc *init_txrx(int trim)
atrf_reset_rf(dsc);
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
#ifdef HAVE_USB /* @@@ yeah, ugly */
atrf_reg_write(dsc, REG_XOSC_CTRL,
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
#else
atrf_reg_write(dsc, REG_XOSC_CTRL, XTAL_MODE_EXT << XTAL_MODE_SHIFT);
#endif
atrf_reg_write(dsc, REG_TRX_CTRL_0, 0); /* disable CLKM */
if (!clkm)
atrf_reg_write(dsc, REG_TRX_CTRL_0, 0); /* disable CLKM */
else
atrf_reg_write(dsc, REG_TRX_CTRL_0,
(PAD_IO_8mA << PAD_IO_CLKM_SHIFT) | clkm);
/* We want to see all interrupts, not only the ones we're expecting. */
atrf_reg_write(dsc, REG_IRQ_MASK, 0xff);
@ -318,6 +329,7 @@ static void usage(const char *name)
" command shell command to run while transmitting (default: wait for\n"
" SIGINT instead)\n\n"
" -c channel channel number, 11 to 26 (default %d)\n"
" -C mhz output clock at 1, 2, 4, 8, or 16 MHz (default: off)\n"
" -f freq frequency in MHz, 2405 to 2480 (default %d)\n"
" -p power transmit power, -17.2 to 3.0 dBm (default %.1f)\n"
" -t trim trim capacitor, 0 to 15 (default 0)\n"
@ -338,10 +350,11 @@ int main(int argc, char *const *argv)
uint8_t cont_tx = 0;
char *end;
int c, freq;
unsigned tmp, clkm = 0;
int status = 0;
struct atrf_dsc *dsc;
while ((c = getopt(argc, argv, "c:f:p:t:T:")) != EOF)
while ((c = getopt(argc, argv, "c:C:f:p:t:T:")) != EOF)
switch (c) {
case 'c':
channel = strtoul(optarg, &end, 0);
@ -372,6 +385,17 @@ int main(int argc, char *const *argv)
if (trim > 15)
usage(*argv);
break;
case 'C':
tmp = strtol(optarg, &end, 0);
if (*end)
usage(*argv);
if (!tmp)
usage(*argv);
for (clkm = 1; !(tmp & 1); tmp >>= 1)
clkm++;
if (tmp != 1 || clkm > 5)
usage(*argv);
break;
case 'T':
if (!strcmp(optarg, "-2"))
cont_tx = CONT_TX_M2M;
@ -390,7 +414,7 @@ int main(int argc, char *const *argv)
switch (argc-optind) {
case 0:
dsc = init_txrx(trim);
dsc = init_txrx(trim, clkm);
set_channel(dsc, channel);
if (!cont_tx)
receive(dsc);
@ -407,7 +431,7 @@ int main(int argc, char *const *argv)
usage(*argv);
/* fall through */
case 1:
dsc = init_txrx(trim);
dsc = init_txrx(trim, clkm);
set_channel(dsc, channel);
if (!cont_tx) {
set_power(dsc, power, 1);