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atspi-txrx: option -T <delta_MHz> to emit a constant wave
- atspi-txrx/atspi-txrx.c (set_power): make enabling the CRC optional (this is necessary for test mode, which doesn't seem to work if the CRC is selected) - atspi-txrx/atspi-txrx.c (test_mode): emit a constant wave in test mode - atspi-txrx/atspi-txrx.c (usage, main): new option -T <delta> to emit a constant wave -2 MHz, -0.5 MHz, or +0.5 MHz from the nominal carrier frequency
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5d63a009c8
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d4fe0277c2
@ -81,7 +81,7 @@ static void set_channel(struct atspi_dsc *dsc, int channel)
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}
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static void set_power(struct atspi_dsc *dsc, double power)
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static void set_power(struct atspi_dsc *dsc, double power, int crc)
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{
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int n;
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@ -90,7 +90,7 @@ static void set_power(struct atspi_dsc *dsc, double power)
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break;
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if (fabs(tx_pwr[n]-power) > 0.01)
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fprintf(stderr, "TX power %.1f dBm\n", tx_pwr[n]);
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atspi_reg_write(dsc, REG_PHY_TX_PWR, TX_AUTO_CRC_ON | n);
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atspi_reg_write(dsc, REG_PHY_TX_PWR, (crc ? TX_AUTO_CRC_ON : 0) | n);
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}
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@ -159,6 +159,29 @@ static void transmit(struct atspi_dsc *dsc, const char *msg, int times)
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}
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static void test_mode(struct atspi_dsc *dsc, uint8_t cont_tx)
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{
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atspi_buf_write(dsc, "", 1);
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atspi_reg_write(dsc, REG_CONT_TX_0, CONT_TX_MAGIC);
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atspi_reg_write(dsc, REG_CONT_TX_1, cont_tx);
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if (!atspi_test_mode(dsc)) {
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atspi_reset_rf(dsc);
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fprintf(stderr, "device does not support test mode\n");
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exit(1);
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}
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atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_PLL_ON);
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wait_for_interrupt(dsc, IRQ_PLL_LOCK, IRQ_PLL_LOCK, 10, 20);
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atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TX_START);
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while (run)
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sleep(1);
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atspi_reset_rf(dsc);
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}
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static void die(int sig)
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{
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run = 0;
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@ -169,10 +192,13 @@ static void usage(const char *name)
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{
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fprintf(stderr,
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"usage: %s [-c channel] [-p power] [-t trim] [message [repetitions]]\n"
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" -c channel channel number, 11 to 26 (default %d)\n"
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" -p power transmit power, -17.2 to 3.0 dBm (default %.1f)\n"
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" -t trim trim capacitor, 0 to 15 (default 0)\n"
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, name , DEFAULT_CHANNEL, DEFAULT_POWER);
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" %s [-c channel] [-p power] [-t trim] -T delta\n"
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" -c channel channel number, 11 to 26 (default %d)\n"
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" -p power transmit power, -17.2 to 3.0 dBm (default %.1f)\n"
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" -t trim trim capacitor, 0 to 15 (default 0)\n"
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" -t trim trim capacitor, 0 to 15 (default 0)\n"
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" -T delta_MHz test mode. delta_MHz is -2, -0.5, or +0.5\n"
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, name, name, DEFAULT_CHANNEL, DEFAULT_POWER);
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exit(1);
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}
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@ -182,11 +208,12 @@ int main(int argc, char *const *argv)
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int channel = DEFAULT_CHANNEL;
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double power = DEFAULT_POWER;
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int trim = 0, times = 1;
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uint8_t cont_tx = 0;
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char *end;
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int c;
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struct atspi_dsc *dsc;
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while ((c = getopt(argc, argv, "c:p:t:")) != EOF)
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while ((c = getopt(argc, argv, "c:p:t:T:")) != EOF)
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switch (c) {
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case 'c':
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channel = strtoul(optarg, &end, 0);
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@ -207,6 +234,16 @@ int main(int argc, char *const *argv)
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if (trim > 15)
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usage(*argv);
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break;
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case 'T':
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if (!strcmp(optarg, "-2"))
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cont_tx = CONT_TX_M2M;
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else if (!strcmp(optarg, "-0.5"))
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cont_tx = CONT_TX_M500K;
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else if (!strcmp(optarg, "+0.5"))
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cont_tx = CONT_TX_P500K;
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else
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usage(*argv);
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break;
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default:
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usage(*argv);
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}
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@ -217,7 +254,12 @@ int main(int argc, char *const *argv)
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case 0:
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dsc = init_txrx(trim);
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set_channel(dsc, channel);
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receive(dsc);
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if (!cont_tx)
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receive(dsc);
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else {
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set_power(dsc, power, 0);
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test_mode(dsc, cont_tx);
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}
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break;
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case 2:
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times = strtoul(argv[optind+1], &end, 0);
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@ -225,9 +267,11 @@ int main(int argc, char *const *argv)
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usage(*argv);
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/* fall through */
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case 1:
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if (cont_tx)
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usage(*argv);
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dsc = init_txrx(trim);
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set_channel(dsc, channel);
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set_power(dsc, power);
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set_power(dsc, power, 1);
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transmit(dsc, argv[optind], times);
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break;
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default:
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