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atrf-path/atrf-path.c: initialize the receiver only once, not for each sweep

Browse Source 
atrf-path -g ... 10 10 time:

before	2.08 s
after	1.92-1.93 s	(92-93%)

- atrf-path.c (set_channel, init_common): moved setting of the channel
  to separate function, for better granularity
- atrf-path.c (init_common, init_tx, init_rx, sample, do_sweep): the
  init_* functions no longer set the channel; use set_channel
- atrf-path.c (main): initialize the receiver only once
This commit is contained in:
Werner Almesberger 2011-04-13 11:49:33 -03:00
parent 436c9faed5
commit 5f153ca4b8
1 changed files with 15 additions and 9 deletions
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24
tools/atrf-path/atrf-path.c
View File

@ -29,26 +29,31 @@
#define DEFAULT_POWER 15 #define DEFAULT_POWER 15
static void init_common(struct atrf_dsc *dsc, int trim, int chan) static void set_channel(struct atrf_dsc *dsc, int chan)
{
atrf_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | chan);
}
static void init_common(struct atrf_dsc *dsc, int trim)
{ {
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF); atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
atrf_reg_write(dsc, REG_XOSC_CTRL, atrf_reg_write(dsc, REG_XOSC_CTRL,
(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim); (XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
atrf_set_clkm(dsc, 0); atrf_set_clkm(dsc, 0);
atrf_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | chan);
} }
static void init_tx(struct atrf_dsc *dsc, int trim, int power, int chan) static void init_tx(struct atrf_dsc *dsc, int trim, int power)
{ {
init_common(dsc, trim, chan); init_common(dsc, trim);
set_power_step(dsc, power, 0); set_power_step(dsc, power, 0);
} }
static void init_rx(struct atrf_dsc *dsc, int trim, int chan) static void init_rx(struct atrf_dsc *dsc, int trim)
{ {
init_common(dsc, trim, chan); init_common(dsc, trim);
atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON); atrf_reg_write(dsc, REG_TRX_STATE, TRX_CMD_RX_ON);
} }
@ -66,7 +71,8 @@ static void sample(const struct sweep *sweep, int chan, int cont_tx,
int sum = 0, min = -1, max = -1; int sum = 0, min = -1, max = -1;
double offset = tx_power_step2dBm(sweep->tx, sweep->power); double offset = tx_power_step2dBm(sweep->tx, sweep->power);
init_tx(sweep->tx, sweep->trim_tx, sweep->power, chan); init_tx(sweep->tx, sweep->trim_tx, sweep->power);
set_channel(sweep->tx, chan);
usleep(155); /* table 7-2, tTR19 */ usleep(155); /* table 7-2, tTR19 */
cw_test_begin(sweep->tx, cont_tx); cw_test_begin(sweep->tx, cont_tx);
@ -90,7 +96,6 @@ static void sample(const struct sweep *sweep, int chan, int cont_tx,
res->avg = rssi_to_dBm((double) sum/sweep->samples)-offset; res->avg = rssi_to_dBm((double) sum/sweep->samples)-offset;
res->min = rssi_to_dBm(min)-offset; res->min = rssi_to_dBm(min)-offset;
res->max = rssi_to_dBm(max)-offset; res->max = rssi_to_dBm(max)-offset;
} }
@ -99,7 +104,7 @@ void do_sweep(const struct sweep *sweep, struct sample *res)
int chan; int chan;
for (chan = 11; chan <= 26; chan++) { for (chan = 11; chan <= 26; chan++) {
init_rx(sweep->rx, sweep->trim_rx, chan); set_channel(sweep->rx, chan);
sample(sweep, chan, CONT_TX_M500K, res++); sample(sweep, chan, CONT_TX_M500K, res++);
sample(sweep, chan, CONT_TX_P500K, res++); sample(sweep, chan, CONT_TX_P500K, res++);
} }
@ -237,6 +242,7 @@ int main(int argc, char **argv)
return 1; return 1;
sweep.power = 15-power; sweep.power = 15-power;
init_rx(sweep.rx, sweep.trim_rx);
if (graphical) if (graphical)
gui(&sweep, sweeps); gui(&sweep, sweeps);
else else