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 #define PACKET_LEN 128
82 /* This are from the table for 433MHz */
84 #define RF_POWER_M30_DBM 0x12
85 #define RF_POWER_M20_DBM 0x0e
86 #define RF_POWER_M15_DBM 0x1d
87 #define RF_POWER_M10_DBM 0x34
88 #define RF_POWER_M5_DBM 0x2c
89 #define RF_POWER_0_DBM 0x60
90 #define RF_POWER_5_DBM 0x84
91 #define RF_POWER_7_DBM 0xc8
92 #define RF_POWER_10_DBM 0xc0
94 #define RF_POWER RF_POWER_0_DBM
96 static __code uint8_t radio_setup[] = {
97 RF_PA_TABLE7_OFF, RF_POWER,
98 RF_PA_TABLE6_OFF, RF_POWER,
99 RF_PA_TABLE5_OFF, RF_POWER,
100 RF_PA_TABLE4_OFF, RF_POWER,
101 RF_PA_TABLE3_OFF, RF_POWER,
102 RF_PA_TABLE2_OFF, RF_POWER,
103 RF_PA_TABLE1_OFF, RF_POWER,
104 RF_PA_TABLE0_OFF, RF_POWER,
106 RF_FREQ2_OFF, FREQ_CONTROL >> 16,
107 RF_FREQ1_OFF, FREQ_CONTROL >> 8,
108 RF_FREQ0_OFF, FREQ_CONTROL >> 0,
110 RF_FSCTRL1_OFF, (IF_FREQ_CONTROL << RF_FSCTRL1_FREQ_IF_SHIFT),
111 RF_FSCTRL0_OFF, (0 << RF_FSCTRL0_FREQOFF_SHIFT),
113 RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
114 (CHANBW_M << RF_MDMCFG4_CHANBW_M_SHIFT) |
115 (DRATE_E << RF_MDMCFG4_DRATE_E_SHIFT)),
116 RF_MDMCFG3_OFF, (DRATE_M << RF_MDMCFG3_DRATE_M_SHIFT),
117 RF_MDMCFG2_OFF, (RF_MDMCFG2_DEM_DCFILT_OFF |
118 RF_MDMCFG2_MOD_FORMAT_GFSK |
119 RF_MDMCFG2_SYNC_MODE_15_16_THRES),
120 RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
121 RF_MDMCFG1_NUM_PREAMBLE_4 |
122 (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
123 RF_MDMCFG0_OFF, (17 << RF_MDMCFG0_CHANSPC_M_SHIFT),
127 RF_DEVIATN_OFF, ((DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
128 (DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
130 /* SmartRF says set LODIV_BUF_CURRENT_TX to 0
131 * And, we're not using power ramping, so use PA_POWER 0
133 RF_FREND0_OFF, ((1 << RF_FREND0_LODIV_BUF_CURRENT_TX_SHIFT) |
134 (0 << RF_FREND0_PA_POWER_SHIFT)),
136 RF_FREND1_OFF, ((1 << RF_FREND1_LNA_CURRENT_SHIFT) |
137 (1 << RF_FREND1_LNA2MIX_CURRENT_SHIFT) |
138 (1 << RF_FREND1_LODIV_BUF_CURRENT_RX_SHIFT) |
139 (2 << RF_FREND1_MIX_CURRENT_SHIFT)),
150 /* default sync values */
154 /* max packet length */
155 RF_PKTLEN_OFF, PACKET_LEN,
157 RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
158 PKTCTRL1_APPEND_STATUS|
159 PKTCTRL1_ADR_CHK_NONE),
160 RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
161 RF_PKTCTRL0_PKT_FORMAT_NORMAL|
163 RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
165 RF_MCSM2_OFF, (RF_MCSM2_RX_TIME_END_OF_PACKET),
166 RF_MCSM1_OFF, (RF_MCSM1_CCA_MODE_RSSI_BELOW_UNLESS_RECEIVING|
167 RF_MCSM1_RXOFF_MODE_IDLE|
168 RF_MCSM1_TXOFF_MODE_IDLE),
169 RF_MCSM0_OFF, (RF_MCSM0_FS_AUTOCAL_FROM_IDLE|
171 RF_MCSM0_CLOSE_IN_RX_18DB),
172 RF_FOCCFG_OFF, (RF_FOCCFG_FOC_PRE_K_3K,
173 RF_FOCCFG_FOC_POST_K_PRE_K,
174 RF_FOCCFG_FOC_LIMIT_BW_OVER_4),
175 RF_BSCFG_OFF, (RF_BSCFG_BS_PRE_K_2K|
176 RF_BSCFG_BS_PRE_KP_3KP|
177 RF_BSCFG_BS_POST_KI_PRE_KI|
178 RF_BSCFG_BS_POST_KP_PRE_KP|
179 RF_BSCFG_BS_LIMIT_0),
180 RF_AGCCTRL2_OFF, 0x43,
181 RF_AGCCTRL1_OFF, 0x40,
182 RF_AGCCTRL0_OFF, 0x91,
192 for (i = 0; i < sizeof (radio_setup); i += 2)
193 RF[radio_setup[i]] = radio_setup[i+1];
196 #define nop() _asm nop _endasm;
199 delay (unsigned char n)