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.
20 /* Values from SmartRF® Studio for:
22 * Deviation: 20.507812 kHz
23 * Datarate: 38.360596 kBaud
25 * RF Freq: 434.549927 MHz
26 * Channel: 99.975586 kHz
28 * RX filter: 93.75 kHz
32 * For 434.550MHz, the frequency value is:
34 * 434.550e6 / (24e6 / 2**16) = 1186611.2
37 #define FREQ_CONTROL 1186611
40 * For IF freq of 140.62kHz, the IF value is:
42 * 140.62e3 / (24e6 / 2**10) = 6
45 #define IF_FREQ_CONTROL 6
48 * For channel bandwidth of 93.75 kHz, the CHANBW_E and CHANBW_M values are
50 * BW = 24e6 / (8 * (4 + M) * 2 ** E)
59 * For a symbol rate of 38360kBaud, the DRATE_E and DRATE_M values are:
61 * R = (256 + M) * 2** E * 24e6 / 2**28
63 * So M is 163 and E is 10
70 * For a channel deviation of 20.5kHz, the DEVIATION_E and DEVIATION_M values are:
72 * F = 24e6/2**17 * (8 + DEVIATION_M) * 2**DEVIATION_E
74 * So M is 6 and E is 3
80 /* This are from the table for 433MHz */
82 #define RF_POWER_M30_DBM 0x12
83 #define RF_POWER_M20_DBM 0x0e
84 #define RF_POWER_M15_DBM 0x1d
85 #define RF_POWER_M10_DBM 0x34
86 #define RF_POWER_M5_DBM 0x2c
87 #define RF_POWER_0_DBM 0x60
88 #define RF_POWER_5_DBM 0x84
89 #define RF_POWER_7_DBM 0xc8
90 #define RF_POWER_10_DBM 0xc0
92 #define RF_POWER RF_POWER_10_DBM
94 static __code uint8_t radio_setup[] = {
95 RF_PA_TABLE7_OFF, RF_POWER,
96 RF_PA_TABLE6_OFF, RF_POWER,
97 RF_PA_TABLE5_OFF, RF_POWER,
98 RF_PA_TABLE4_OFF, RF_POWER,
99 RF_PA_TABLE3_OFF, RF_POWER,
100 RF_PA_TABLE2_OFF, RF_POWER,
101 RF_PA_TABLE1_OFF, RF_POWER,
102 RF_PA_TABLE0_OFF, RF_POWER,
104 RF_FREQ2_OFF, (FREQ_CONTROL >> 16) & 0xff,
105 RF_FREQ1_OFF, (FREQ_CONTROL >> 8) & 0xff,
106 RF_FREQ0_OFF, (FREQ_CONTROL >> 0) & 0xff,
108 RF_FSCTRL1_OFF, (IF_FREQ_CONTROL << RF_FSCTRL1_FREQ_IF_SHIFT),
109 RF_FSCTRL0_OFF, (0 << RF_FSCTRL0_FREQOFF_SHIFT),
111 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
112 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
113 (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
114 RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
115 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
116 RF_MDMCFG2_MOD_FORMAT_GFSK |
117 RF_MDMCFG2_SYNC_MODE_15_16_THRES),
118 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
119 RF_MDMCFG1_NUM_PREAMBLE_4 |
120 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
121 RF_MDMCFG0_OFF, (17 << RF_MDMCFG0_CHANSPC_M_SHIFT),
125 RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
126 (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
128 /* SmartRF says set LODIV_BUF_CURRENT_TX to 0
129 * And, we're not using power ramping, so use PA_POWER 0
131 RF_FREND0_OFF, ((1 << RF_FREND0_LODIV_BUF_CURRENT_TX_SHIFT) |
132 (0 << RF_FREND0_PA_POWER_SHIFT)),
134 RF_FREND1_OFF, ((1 << RF_FREND1_LNA_CURRENT_SHIFT) |
135 (1 << RF_FREND1_LNA2MIX_CURRENT_SHIFT) |
136 (1 << RF_FREND1_LODIV_BUF_CURRENT_RX_SHIFT) |
137 (2 << RF_FREND1_MIX_CURRENT_SHIFT)),
148 /* default sync values */
152 /* max packet length */
153 RF_PKTLEN_OFF, sizeof (struct ao_telemetry),
155 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
156 PKTCTRL1_APPEND_STATUS|
157 PKTCTRL1_ADR_CHK_NONE),
158 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
159 RF_PKTCTRL0_PKT_FORMAT_NORMAL|
161 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
163 RF_MCSM2_OFF, (RF_MCSM2_RX_TIME_END_OF_PACKET),
164 RF_MCSM1_OFF, (RF_MCSM1_CCA_MODE_RSSI_BELOW_UNLESS_RECEIVING|
165 RF_MCSM1_RXOFF_MODE_IDLE|
166 RF_MCSM1_TXOFF_MODE_IDLE),
167 RF_MCSM0_OFF, (RF_MCSM0_FS_AUTOCAL_FROM_IDLE|
169 RF_MCSM0_CLOSE_IN_RX_0DB),
170 RF_FOCCFG_OFF, (RF_FOCCFG_FOC_PRE_K_3K,
171 RF_FOCCFG_FOC_POST_K_PRE_K,
172 RF_FOCCFG_FOC_LIMIT_BW_OVER_4),
173 RF_BSCFG_OFF, (RF_BSCFG_BS_PRE_K_2K|
174 RF_BSCFG_BS_PRE_KP_3KP|
175 RF_BSCFG_BS_POST_KI_PRE_KI|
176 RF_BSCFG_BS_POST_KP_PRE_KP|
177 RF_BSCFG_BS_LIMIT_0),
178 RF_AGCCTRL2_OFF, 0x43,
179 RF_AGCCTRL1_OFF, 0x40,
180 RF_AGCCTRL0_OFF, 0x91,
188 static __code uint8_t telemetry_setup[] = {
189 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
190 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
191 (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
192 RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
193 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
194 RF_MDMCFG2_MOD_FORMAT_GFSK |
195 RF_MDMCFG2_SYNC_MODE_15_16_THRES),
196 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
197 RF_MDMCFG1_NUM_PREAMBLE_4 |
198 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
200 RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
201 (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
203 /* max packet length */
204 RF_PKTLEN_OFF, sizeof (struct ao_telemetry),
205 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
206 PKTCTRL1_APPEND_STATUS|
207 PKTCTRL1_ADR_CHK_NONE),
208 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
209 RF_PKTCTRL0_PKT_FORMAT_NORMAL|
211 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
214 __xdata uint8_t ao_radio_dma;
215 __xdata uint8_t ao_radio_dma_done;
216 __xdata uint8_t ao_radio_mutex;
221 if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
226 } while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
231 ao_radio_send(__xdata struct ao_telemetry *telemetry) __reentrant
234 ao_mutex_get(&ao_radio_mutex);
236 RF_CHANNR = ao_config.radio_channel;
237 ao_dma_set_transfer(ao_radio_dma,
240 sizeof (struct ao_telemetry),
241 DMA_CFG0_WORDSIZE_8 |
242 DMA_CFG0_TMODE_SINGLE |
243 DMA_CFG0_TRIGGER_RADIO,
246 DMA_CFG1_PRIORITY_HIGH);
247 ao_dma_start(ao_radio_dma);
249 __critical while (!ao_radio_dma_done)
250 ao_sleep(&ao_radio_dma_done);
251 ao_mutex_put(&ao_radio_mutex);
255 ao_radio_recv(__xdata struct ao_radio_recv *radio) __reentrant
258 ao_mutex_get(&ao_radio_mutex);
260 RF_CHANNR = ao_config.radio_channel;
261 ao_dma_set_transfer(ao_radio_dma,
264 sizeof (struct ao_radio_recv),
265 DMA_CFG0_WORDSIZE_8 |
266 DMA_CFG0_TMODE_SINGLE |
267 DMA_CFG0_TRIGGER_RADIO,
270 DMA_CFG1_PRIORITY_HIGH);
271 ao_dma_start(ao_radio_dma);
273 __critical while (!ao_radio_dma_done)
274 ao_sleep(&ao_radio_dma_done);
275 ao_mutex_put(&ao_radio_mutex);
282 for (i = 0; i < sizeof (radio_setup); i += 2)
283 RF[radio_setup[i]] = radio_setup[i+1];
284 ao_radio_dma_done = 1;
285 ao_radio_dma = ao_dma_alloc(&ao_radio_dma_done);