2 * Copyright © 2009 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 /* Values from SmartRF® Studio for:
25 * Deviation: 20.507812 kHz
26 * Datarate: 38.360596 kBaud
28 * RF Freq: 434.549927 MHz
29 * Channel: 99.975586 kHz
31 * RX filter: 93.75 kHz
35 * For IF freq of 140.62kHz, the IF value is:
37 * 140.62e3 / (24e6 / 2**10) = 6
40 #define IF_FREQ_CONTROL 6
43 * For channel bandwidth of 93.75 kHz, the CHANBW_E and CHANBW_M values are
45 * BW = 24e6 / (8 * (4 + M) * 2 ** E)
54 * For a symbol rate of 38360kBaud, the DRATE_E and DRATE_M values are:
56 * R = (256 + M) * 2** E * 24e6 / 2**28
58 * So M is 163 and E is 10
65 * For a channel deviation of 20.5kHz, the DEVIATION_E and DEVIATION_M values are:
67 * F = 24e6/2**17 * (8 + DEVIATION_M) * 2**DEVIATION_E
69 * So M is 6 and E is 3
76 * For our RDF beacon, set the symbol rate to 2kBaud (for a 1kHz tone),
77 * so the DRATE_E and DRATE_M values are:
81 * To make the tone last for 200ms, we need 2000 * .2 = 400 bits or 50 bytes
85 #define RDF_DRATE_M 94
86 #define RDF_PACKET_LEN 50
89 * RDF deviation should match the normal NFM value of 5kHz
95 #define RDF_DEVIATION_M 6
96 #define RDF_DEVIATION_E 1
98 /* This are from the table for 433MHz */
100 #define RF_POWER_M30_DBM 0x12
101 #define RF_POWER_M20_DBM 0x0e
102 #define RF_POWER_M15_DBM 0x1d
103 #define RF_POWER_M10_DBM 0x34
104 #define RF_POWER_M5_DBM 0x2c
105 #define RF_POWER_0_DBM 0x60
106 #define RF_POWER_5_DBM 0x84
107 #define RF_POWER_7_DBM 0xc8
108 #define RF_POWER_10_DBM 0xc0
110 #define RF_POWER RF_POWER_10_DBM
112 static __code uint8_t radio_setup[] = {
113 RF_PA_TABLE7_OFF, RF_POWER,
114 RF_PA_TABLE6_OFF, RF_POWER,
115 RF_PA_TABLE5_OFF, RF_POWER,
116 RF_PA_TABLE4_OFF, RF_POWER,
117 RF_PA_TABLE3_OFF, RF_POWER,
118 RF_PA_TABLE2_OFF, RF_POWER,
119 RF_PA_TABLE1_OFF, RF_POWER,
120 RF_PA_TABLE0_OFF, RF_POWER,
122 RF_FSCTRL1_OFF, (IF_FREQ_CONTROL << RF_FSCTRL1_FREQ_IF_SHIFT),
123 RF_FSCTRL0_OFF, (0 << RF_FSCTRL0_FREQOFF_SHIFT),
125 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
126 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
127 (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
128 RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
129 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
130 RF_MDMCFG2_MOD_FORMAT_GFSK |
131 RF_MDMCFG2_SYNC_MODE_15_16_THRES),
132 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
133 RF_MDMCFG1_NUM_PREAMBLE_4 |
134 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
135 RF_MDMCFG0_OFF, (17 << RF_MDMCFG0_CHANSPC_M_SHIFT),
139 RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
140 (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
142 /* SmartRF says set LODIV_BUF_CURRENT_TX to 0
143 * And, we're not using power ramping, so use PA_POWER 0
145 RF_FREND0_OFF, ((1 << RF_FREND0_LODIV_BUF_CURRENT_TX_SHIFT) |
146 (0 << RF_FREND0_PA_POWER_SHIFT)),
148 RF_FREND1_OFF, ((1 << RF_FREND1_LNA_CURRENT_SHIFT) |
149 (1 << RF_FREND1_LNA2MIX_CURRENT_SHIFT) |
150 (1 << RF_FREND1_LODIV_BUF_CURRENT_RX_SHIFT) |
151 (2 << RF_FREND1_MIX_CURRENT_SHIFT)),
162 /* default sync values */
166 /* max packet length */
167 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
168 PKTCTRL1_APPEND_STATUS|
169 PKTCTRL1_ADR_CHK_NONE),
170 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
171 RF_PKTCTRL0_PKT_FORMAT_NORMAL|
173 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
175 RF_MCSM2_OFF, (RF_MCSM2_RX_TIME_END_OF_PACKET),
176 RF_MCSM1_OFF, (RF_MCSM1_CCA_MODE_RSSI_BELOW_UNLESS_RECEIVING|
177 RF_MCSM1_RXOFF_MODE_IDLE|
178 RF_MCSM1_TXOFF_MODE_IDLE),
179 RF_MCSM0_OFF, (RF_MCSM0_FS_AUTOCAL_FROM_IDLE|
181 RF_MCSM0_CLOSE_IN_RX_0DB),
182 RF_FOCCFG_OFF, (RF_FOCCFG_FOC_PRE_K_3K,
183 RF_FOCCFG_FOC_POST_K_PRE_K,
184 RF_FOCCFG_FOC_LIMIT_BW_OVER_4),
185 RF_BSCFG_OFF, (RF_BSCFG_BS_PRE_K_2K|
186 RF_BSCFG_BS_PRE_KP_3KP|
187 RF_BSCFG_BS_POST_KI_PRE_KI|
188 RF_BSCFG_BS_POST_KP_PRE_KP|
189 RF_BSCFG_BS_LIMIT_0),
190 RF_AGCCTRL2_OFF, 0x43,
191 RF_AGCCTRL1_OFF, 0x40,
192 RF_AGCCTRL0_OFF, 0x91,
199 static __code uint8_t rdf_setup[] = {
200 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
201 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
202 (RDF_DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
203 RF_MDMCFG3_OFF, (RDF_DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
204 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
205 RF_MDMCFG2_MOD_FORMAT_GFSK |
206 RF_MDMCFG2_SYNC_MODE_NONE),
207 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_DIS |
208 RF_MDMCFG1_NUM_PREAMBLE_2 |
209 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
211 RF_DEVIATN_OFF, ((RDF_DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
212 (RDF_DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
214 /* packet length is set in-line */
215 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
216 PKTCTRL1_ADR_CHK_NONE),
217 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_PKT_FORMAT_NORMAL|
218 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
221 static __code uint8_t fixed_pkt_setup[] = {
222 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
223 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
224 (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
225 RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
226 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
227 RF_MDMCFG2_MOD_FORMAT_GFSK |
228 RF_MDMCFG2_SYNC_MODE_15_16_THRES),
229 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
230 RF_MDMCFG1_NUM_PREAMBLE_4 |
231 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
233 RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
234 (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
236 /* max packet length -- now set inline */
237 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
238 PKTCTRL1_APPEND_STATUS|
239 PKTCTRL1_ADR_CHK_NONE),
240 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
241 RF_PKTCTRL0_PKT_FORMAT_NORMAL|
243 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
246 __xdata uint8_t ao_radio_dma;
247 __xdata uint8_t ao_radio_dma_done;
248 __xdata uint8_t ao_radio_done;
249 __xdata uint8_t ao_radio_abort;
250 __xdata uint8_t ao_radio_mutex;
253 ao_radio_general_isr(void) __interrupt 16
256 if (RFIF & RFIF_IM_TIMEOUT) {
257 ao_radio_recv_abort();
258 RFIF &= ~ RFIF_IM_TIMEOUT;
259 } else if (RFIF & RFIF_IM_DONE) {
261 ao_wakeup(&ao_radio_done);
262 RFIF &= ~RFIF_IM_DONE;
267 ao_radio_set_packet(void)
270 for (i = 0; i < sizeof (fixed_pkt_setup); i += 2)
271 RF[fixed_pkt_setup[i]] = fixed_pkt_setup[i+1];
277 if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
282 } while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
286 #define ao_radio_put() ao_mutex_put(&ao_radio_mutex)
289 ao_radio_get(uint8_t len)
292 ao_mutex_get(&ao_radio_mutex);
295 RF_FREQ2 = (uint8_t) (ao_config.radio_setting >> 16);
296 RF_FREQ1 = (uint8_t) (ao_config.radio_setting >> 8);
297 RF_FREQ0 = (uint8_t) (ao_config.radio_setting);
303 ao_radio_send(__xdata void *packet, uint8_t size) __reentrant
307 ao_dma_set_transfer(ao_radio_dma,
311 DMA_CFG0_WORDSIZE_8 |
312 DMA_CFG0_TMODE_SINGLE |
313 DMA_CFG0_TRIGGER_RADIO,
316 DMA_CFG1_PRIORITY_HIGH);
317 ao_dma_start(ao_radio_dma);
319 __critical while (!ao_radio_done)
320 ao_sleep(&ao_radio_done);
325 ao_radio_recv(__xdata void *packet, uint8_t size) __reentrant
328 ao_radio_get(size - 2);
329 ao_dma_set_transfer(ao_radio_dma,
333 DMA_CFG0_WORDSIZE_8 |
334 DMA_CFG0_TMODE_SINGLE |
335 DMA_CFG0_TRIGGER_RADIO,
338 DMA_CFG1_PRIORITY_HIGH);
339 ao_dma_start(ao_radio_dma);
342 /* Wait for DMA to be done, for the radio receive process to
343 * get aborted or for a receive timeout to fire
345 __critical while (!ao_radio_dma_done && !ao_radio_abort)
346 if (ao_sleep(&ao_radio_dma_done))
349 /* If recv was aborted, clean up by stopping the DMA engine
350 * and idling the radio
352 if (!ao_radio_dma_done) {
353 ao_dma_abort(ao_radio_dma);
357 return ao_radio_dma_done;
361 * Wake up a task waiting to receive a radio packet
362 * and tell them to abort the transfer
366 ao_radio_recv_abort(void)
369 ao_wakeup(&ao_radio_dma_done);
372 __code ao_radio_rdf_value = 0x55;
375 ao_radio_rdf_start(void)
379 ao_radio_get(AO_RADIO_RDF_LEN);
381 for (i = 0; i < sizeof (rdf_setup); i += 2)
382 RF[rdf_setup[i]] = rdf_setup[i+1];
386 ao_radio_rdf_run(void)
388 ao_dma_start(ao_radio_dma);
390 __critical while (!ao_radio_done && !ao_radio_abort)
391 ao_sleep(&ao_radio_done);
392 if (!ao_radio_done) {
393 ao_dma_abort(ao_radio_dma);
396 ao_radio_set_packet();
403 ao_radio_rdf_start();
405 ao_dma_set_transfer(ao_radio_dma,
406 CODE_TO_XDATA(&ao_radio_rdf_value),
409 DMA_CFG0_WORDSIZE_8 |
410 DMA_CFG0_TMODE_SINGLE |
411 DMA_CFG0_TRIGGER_RADIO,
414 DMA_CFG1_PRIORITY_HIGH);
421 #define CONT_PAUSE_8 PA, PA, PA, PA, PA, PA, PA, PA
422 #define CONT_PAUSE_16 CONT_PAUSE_8, CONT_PAUSE_8
423 #define CONT_PAUSE_24 CONT_PAUSE_16, CONT_PAUSE_8
425 #define CONT_BEEP_8 BE, BE, BE, BE, BE, BE, BE, BE
427 #if AO_RADIO_CONT_PAUSE_LEN == 24
428 #define CONT_PAUSE CONT_PAUSE_24
431 #if AO_RADIO_CONT_TONE_LEN == 8
432 #define CONT_BEEP CONT_BEEP_8
433 #define CONT_PAUSE_SHORT CONT_PAUSE_8
436 #define CONT_ADDR(c) CODE_TO_XDATA(&ao_radio_cont[(3-(c)) * (AO_RADIO_CONT_PAUSE_LEN + AO_RADIO_CONT_TONE_LEN)])
438 __code uint8_t ao_radio_cont[] = {
439 CONT_PAUSE, CONT_BEEP,
440 CONT_PAUSE, CONT_BEEP,
441 CONT_PAUSE, CONT_BEEP,
442 CONT_PAUSE, CONT_PAUSE_SHORT,
443 CONT_PAUSE, CONT_PAUSE_SHORT,
448 ao_radio_continuity(uint8_t c)
450 ao_radio_rdf_start();
451 ao_dma_set_transfer(ao_radio_dma,
454 AO_RADIO_CONT_TOTAL_LEN,
455 DMA_CFG0_WORDSIZE_8 |
456 DMA_CFG0_TMODE_SINGLE |
457 DMA_CFG0_TRIGGER_RADIO,
460 DMA_CFG1_PRIORITY_HIGH);
465 ao_radio_rdf_abort(void)
468 ao_wakeup(&ao_radio_done);
474 static __xdata ao_radio_test_on;
477 ao_radio_test(uint8_t on)
480 if (!ao_radio_test_on) {
482 ao_monitor_disable();
485 ao_packet_slave_stop();
492 ao_radio_test_on = 1;
495 if (ao_radio_test_on) {
498 ao_radio_test_on = 0;
510 ao_radio_test_cmd(void)
513 static __xdata radio_on;
515 if (ao_cmd_lex_c != '\n') {
517 mode = (uint8_t) ao_cmd_lex_u32;
523 printf ("Hit a character to stop..."); flush();
531 __code struct ao_cmds ao_radio_cmds[] = {
532 { ao_radio_test_cmd, "C <1 start, 0 stop, none both>\0Radio carrier test" },
540 for (i = 0; i < sizeof (radio_setup); i += 2)
541 RF[radio_setup[i]] = radio_setup[i+1];
542 ao_radio_set_packet();
543 ao_radio_dma_done = 1;
544 ao_radio_dma = ao_dma_alloc(&ao_radio_dma_done);
546 RFIM = RFIM_IM_TIMEOUT|RFIM_IM_DONE;
548 ao_cmd_register(&ao_radio_cmds[0]);