*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
#define IF_FREQ_CONTROL 6
/*
+ * http://www.ntia.doc.gov/files/ntia/publications/84-168.pdf
+ *
+ * Necessary bandwidth for a FSK modulated signal:
+ *
+ * bw = 2.6d + 0.55b 1.5 < m < 5.5
+ * bw = 2.1d + 1.9b 5.5 < m < 20
+ *
+ * b is the modulation rate in bps
+ * d is the peak deviation (from the center)
+ *
+ * m = 2d / b
+ *
+ * 20.5 kHz deviation 38.4kbps signal:
+ *
+ * m = 41 / 38.4, which is < 5.5:
+ *
+ * bw = 2.6 * 20.5 + 0.55 * 38.4 = 74.42kHz
+ *
+ * M = 1, E = 3, bw = 75kHz
+ *
+ * 5.125 kHz deviation, 9.6kbps signal
+ *
+ * m = 10.25 / 9.6, which is < 5.5:
+ *
+ * bw = 2.6 * 5.125 + 0.55 * 9.6 = 18.6kHz
+ *
+ * M = 2, E = 3, bw = 53.6kHz
+ *
+ * 1.28125kHz deviation, 2.4kbps signal
+ *
+ * m = 2.565 / 2.4, which is < 5.5:
+ *
+ * bw = 2.6 * 20.5 + 1.9 * 2.4 = 47.61kHz
+ *
+ * M = 3, E = 3, bw = 53.6kHz
+ *
* For channel bandwidth of 93.75 kHz, the CHANBW_E and CHANBW_M values are
*
* BW = 24e6 / (8 * (4 + M) * 2 ** E)
* So, M = 0 and E = 3
*/
-#define CHANBW_M 0
+#define CHANBW_M_384 1
+#define CHANBW_M_96 3
+#define CHANBW_M_24 3
#define CHANBW_E 3
/*
*
* R = (256 + M) * 2** E * 24e6 / 2**28
*
- * So M is 163 and E is 10
+ * So for 38360kBaud, M is 163 and E is 10
*/
-#define DRATE_E 10
#define DRATE_M 163
+#define DRATE_E_384 10
+
+/* For 9600 baud, M is 163 and E is 8
+ */
+
+#define DRATE_E_96 8
+
+/* For 2400 baud, M is 163 and E is 6
+ */
+
+#define DRATE_E_24 6
+
/*
* For a channel deviation of 20.5kHz, the DEVIATION_E and DEVIATION_M values are:
*
* F = 24e6/2**17 * (8 + DEVIATION_M) * 2**DEVIATION_E
*
- * So M is 6 and E is 3
+ * For 20.5kHz deviation, M is 6 and E is 3
+ * For 5.125kHz deviation, M is 6 and E is 1
+ * For 1.28125kHz deviation, M is 0 and E is 0
*/
-#define DEVIATION_M 6
-#define DEVIATION_E 3
+#define DEVIATION_M_384 6
+#define DEVIATION_E_384 3
+
+#define DEVIATION_M_96 6
+#define DEVIATION_E_96 1
+
+#define DEVIATION_M_24 0
+#define DEVIATION_E_24 0
/*
* For our RDF beacon, set the symbol rate to 2kBaud (for a 1kHz tone),
RF_FSCTRL1_OFF, (IF_FREQ_CONTROL << RF_FSCTRL1_FREQ_IF_SHIFT),
RF_FSCTRL0_OFF, (0 << RF_FSCTRL0_FREQOFF_SHIFT),
- RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
- (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
- (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_ON |
RF_MDMCFG2_MOD_FORMAT_GFSK |
RF_CHANNR_OFF, 0,
- RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
- (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
-
/* SmartRF says set LODIV_BUF_CURRENT_TX to 0
* And, we're not using power ramping, so use PA_POWER 0
*/
static __code uint8_t rdf_setup[] = {
RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
- (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
+ (CHANBW_M_384 << RF_MDMCFG4_CHANBW_M_SHIFT) |
(RDF_DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
RF_MDMCFG3_OFF, (RDF_DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
};
static __code uint8_t fixed_pkt_setup[] = {
+#if !HAS_RADIO_RATE
RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
- (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
- (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
+ (CHANBW_M_384 << RF_MDMCFG4_CHANBW_M_SHIFT) |
+ (DRATE_E_384 << RF_MDMCFG4_DRATE_E_SHIFT)),
+#endif
RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_ON |
RF_MDMCFG2_MOD_FORMAT_GFSK |
RF_MDMCFG1_NUM_PREAMBLE_4 |
(2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
- RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
- (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
+#if !HAS_RADIO_RATE
+ RF_DEVIATN_OFF, ((DEVIATION_E_384 << RF_DEVIATN_DEVIATION_E_SHIFT) |
+ (DEVIATION_M_384 << RF_DEVIATN_DEVIATION_M_SHIFT)),
+#endif
/* max packet length -- now set inline */
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
};
+#if HAS_RADIO_RATE
+static __code struct {
+ uint8_t mdmcfg4;
+ uint8_t deviatn;
+} packet_rate_setup[] = {
+ /* 38400 */
+ {
+ ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
+ (CHANBW_M_384 << RF_MDMCFG4_CHANBW_M_SHIFT) |
+ (DRATE_E_384 << RF_MDMCFG4_DRATE_E_SHIFT)),
+ ((DEVIATION_E_384 << RF_DEVIATN_DEVIATION_E_SHIFT) |
+ (DEVIATION_M_384 << RF_DEVIATN_DEVIATION_M_SHIFT)),
+ },
+ /* 9600 */
+ {
+ ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
+ (CHANBW_M_96 << RF_MDMCFG4_CHANBW_M_SHIFT) |
+ (DRATE_E_96 << RF_MDMCFG4_DRATE_E_SHIFT)),
+ ((DEVIATION_E_96 << RF_DEVIATN_DEVIATION_E_SHIFT) |
+ (DEVIATION_M_96 << RF_DEVIATN_DEVIATION_M_SHIFT)),
+ },
+ /* 2400 */
+ {
+ ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
+ (CHANBW_M_24 << RF_MDMCFG4_CHANBW_M_SHIFT) |
+ (DRATE_E_24 << RF_MDMCFG4_DRATE_E_SHIFT)),
+ ((DEVIATION_E_24 << RF_DEVIATN_DEVIATION_E_SHIFT) |
+ (DEVIATION_M_24 << RF_DEVIATN_DEVIATION_M_SHIFT)),
+ },
+};
+#endif
+
__xdata uint8_t ao_radio_dma;
__xdata uint8_t ao_radio_dma_done;
__xdata uint8_t ao_radio_done;
RF_FREQ1 = (uint8_t) (ao_config.radio_setting >> 8);
RF_FREQ0 = (uint8_t) (ao_config.radio_setting);
RF_PKTLEN = len;
+#if HAS_RADIO_RATE
+ RF_MDMCFG4 = packet_rate_setup[ao_config.radio_rate].mdmcfg4;
+ RF_DEVIATN = packet_rate_setup[ao_config.radio_rate].deviatn;
+#endif
}
/* Wait for DMA to be done, for the radio receive process to
* get aborted or for a receive timeout to fire
*/
- if (timeout)
- ao_alarm(timeout);
__critical while (!ao_radio_dma_done && !ao_radio_abort)
- if (ao_sleep(&ao_radio_dma_done))
+ if (ao_sleep_for(&ao_radio_dma_done, timeout))
break;
- if (timeout)
- ao_clear_alarm();
/* If recv was aborted, clean up by stopping the DMA engine
* and idling the radio
/* Output carrier */
-static __xdata ao_radio_test_on;
+static __xdata radio_test_on;
void
ao_radio_test(uint8_t on)
{
if (on) {
- if (!ao_radio_test_on) {
+ if (!radio_test_on) {
#if HAS_MONITOR
ao_monitor_disable();
#endif
#endif
ao_radio_get(0xff);
RFST = RFST_STX;
- ao_radio_test_on = 1;
+ radio_test_on = 1;
}
} else {
- if (ao_radio_test_on) {
+ if (radio_test_on) {
ao_radio_idle();
ao_radio_put();
- ao_radio_test_on = 0;
+ radio_test_on = 0;
#if HAS_MONITOR
ao_monitor_enable();
#endif
projects / fw / altos / blobdiff