253 lines
6.5 KiB
C
253 lines
6.5 KiB
C
/*
|
|
* Copyright © 2009 Keith Packard <keithp@keithp.com>
|
|
*
|
|
* 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; 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*/
|
|
|
|
#include "ao_bringup.h"
|
|
|
|
/* Values from SmartRF® Studio for:
|
|
*
|
|
* Deviation: 20.507812 kHz
|
|
* Datarate: 38.360596 kBaud
|
|
* Modulation: GFSK
|
|
* RF Freq: 434.549927 MHz
|
|
* Channel: 99.975586 kHz
|
|
* Channel: 0
|
|
* RX filter: 93.75 kHz
|
|
*/
|
|
|
|
/*
|
|
* For 434.550MHz, the frequency value is:
|
|
*
|
|
* 434.550e6 / (24e6 / 2**16) = 1186611.2
|
|
*/
|
|
|
|
#define FREQ_CONTROL 1186611
|
|
|
|
/*
|
|
* For IF freq of 140.62kHz, the IF value is:
|
|
*
|
|
* 140.62e3 / (24e6 / 2**10) = 6
|
|
*/
|
|
|
|
#define IF_FREQ_CONTROL 6
|
|
|
|
/*
|
|
* 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_E 3
|
|
|
|
/*
|
|
* For a symbol rate of 38360kBaud, the DRATE_E and DRATE_M values are:
|
|
*
|
|
* R = (256 + M) * 2** E * 24e6 / 2**28
|
|
*
|
|
* So M is 163 and E is 10
|
|
*/
|
|
|
|
#define DRATE_E 10
|
|
#define DRATE_M 163
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
#define DEVIATION_M 6
|
|
#define DEVIATION_E 3
|
|
|
|
/*
|
|
* For our RDF beacon, set the symbol rate to 2kBaud (for a 1kHz tone),
|
|
* so the DRATE_E and DRATE_M values are:
|
|
*
|
|
* M is 94 and E is 6
|
|
*
|
|
* To make the tone last for 200ms, we need 2000 * .2 = 400 bits or 50 bytes
|
|
*/
|
|
|
|
#define RDF_DRATE_E 6
|
|
#define RDF_DRATE_M 94
|
|
#define RDF_PACKET_LEN 50
|
|
|
|
/*
|
|
* RDF deviation should match the normal NFM value of 5kHz
|
|
*
|
|
* M is 6 and E is 1
|
|
*
|
|
*/
|
|
|
|
#define RDF_DEVIATION_M 6
|
|
#define RDF_DEVIATION_E 1
|
|
|
|
/* This are from the table for 433MHz */
|
|
|
|
#define RF_POWER_M30_DBM 0x12
|
|
#define RF_POWER_M20_DBM 0x0e
|
|
#define RF_POWER_M15_DBM 0x1d
|
|
#define RF_POWER_M10_DBM 0x34
|
|
#define RF_POWER_M5_DBM 0x2c
|
|
#define RF_POWER_0_DBM 0x60
|
|
#define RF_POWER_5_DBM 0x84
|
|
#define RF_POWER_7_DBM 0xc8
|
|
#define RF_POWER_10_DBM 0xc0
|
|
|
|
#define RF_POWER RF_POWER_10_DBM
|
|
|
|
static __code uint8_t radio_setup[] = {
|
|
RF_PA_TABLE7_OFF, RF_POWER,
|
|
RF_PA_TABLE6_OFF, RF_POWER,
|
|
RF_PA_TABLE5_OFF, RF_POWER,
|
|
RF_PA_TABLE4_OFF, RF_POWER,
|
|
RF_PA_TABLE3_OFF, RF_POWER,
|
|
RF_PA_TABLE2_OFF, RF_POWER,
|
|
RF_PA_TABLE1_OFF, RF_POWER,
|
|
RF_PA_TABLE0_OFF, RF_POWER,
|
|
|
|
RF_FREQ2_OFF, (FREQ_CONTROL >> 16) & 0xff,
|
|
RF_FREQ1_OFF, (FREQ_CONTROL >> 8) & 0xff,
|
|
RF_FREQ0_OFF, (FREQ_CONTROL) & 0xff,
|
|
|
|
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_OFF |
|
|
RF_MDMCFG2_MOD_FORMAT_GFSK |
|
|
RF_MDMCFG2_SYNC_MODE_15_16_THRES),
|
|
RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
|
|
RF_MDMCFG1_NUM_PREAMBLE_4 |
|
|
(2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
|
|
RF_MDMCFG0_OFF, (17 << RF_MDMCFG0_CHANSPC_M_SHIFT),
|
|
|
|
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
|
|
*/
|
|
RF_FREND0_OFF, ((1 << RF_FREND0_LODIV_BUF_CURRENT_TX_SHIFT) |
|
|
(0 << RF_FREND0_PA_POWER_SHIFT)),
|
|
|
|
RF_FREND1_OFF, ((1 << RF_FREND1_LNA_CURRENT_SHIFT) |
|
|
(1 << RF_FREND1_LNA2MIX_CURRENT_SHIFT) |
|
|
(1 << RF_FREND1_LODIV_BUF_CURRENT_RX_SHIFT) |
|
|
(2 << RF_FREND1_MIX_CURRENT_SHIFT)),
|
|
|
|
RF_FSCAL3_OFF, 0xE9,
|
|
RF_FSCAL2_OFF, 0x0A,
|
|
RF_FSCAL1_OFF, 0x00,
|
|
RF_FSCAL0_OFF, 0x1F,
|
|
|
|
RF_TEST2_OFF, 0x88,
|
|
RF_TEST1_OFF, 0x31,
|
|
RF_TEST0_OFF, 0x09,
|
|
|
|
/* default sync values */
|
|
RF_SYNC1_OFF, 0xD3,
|
|
RF_SYNC0_OFF, 0x91,
|
|
|
|
/* max packet length */
|
|
RF_PKTLEN_OFF, 64,
|
|
|
|
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
|
|
PKTCTRL1_APPEND_STATUS|
|
|
PKTCTRL1_ADR_CHK_NONE),
|
|
RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
|
|
RF_PKTCTRL0_PKT_FORMAT_NORMAL|
|
|
RF_PKTCTRL0_CRC_EN|
|
|
RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
|
|
RF_ADDR_OFF, 0x00,
|
|
RF_MCSM2_OFF, (RF_MCSM2_RX_TIME_END_OF_PACKET),
|
|
RF_MCSM1_OFF, (RF_MCSM1_CCA_MODE_RSSI_BELOW_UNLESS_RECEIVING|
|
|
RF_MCSM1_RXOFF_MODE_IDLE|
|
|
RF_MCSM1_TXOFF_MODE_IDLE),
|
|
RF_MCSM0_OFF, (RF_MCSM0_FS_AUTOCAL_FROM_IDLE|
|
|
RF_MCSM0_MAGIC_3|
|
|
RF_MCSM0_CLOSE_IN_RX_0DB),
|
|
RF_FOCCFG_OFF, (RF_FOCCFG_FOC_PRE_K_3K,
|
|
RF_FOCCFG_FOC_POST_K_PRE_K,
|
|
RF_FOCCFG_FOC_LIMIT_BW_OVER_4),
|
|
RF_BSCFG_OFF, (RF_BSCFG_BS_PRE_K_2K|
|
|
RF_BSCFG_BS_PRE_KP_3KP|
|
|
RF_BSCFG_BS_POST_KI_PRE_KI|
|
|
RF_BSCFG_BS_POST_KP_PRE_KP|
|
|
RF_BSCFG_BS_LIMIT_0),
|
|
RF_AGCCTRL2_OFF, 0x43,
|
|
RF_AGCCTRL1_OFF, 0x40,
|
|
RF_AGCCTRL0_OFF, 0x91,
|
|
|
|
RF_IOCFG2_OFF, 0x00,
|
|
RF_IOCFG1_OFF, 0x00,
|
|
RF_IOCFG0_OFF, 0x00,
|
|
|
|
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_OFF |
|
|
RF_MDMCFG2_MOD_FORMAT_GFSK |
|
|
RF_MDMCFG2_SYNC_MODE_15_16_THRES),
|
|
RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_EN |
|
|
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)),
|
|
|
|
/* max packet length */
|
|
RF_PKTLEN_OFF, 0xff,
|
|
RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
|
|
PKTCTRL1_APPEND_STATUS|
|
|
PKTCTRL1_ADR_CHK_NONE),
|
|
RF_PKTCTRL0_OFF, (RF_PKTCTRL0_WHITE_DATA|
|
|
RF_PKTCTRL0_PKT_FORMAT_NORMAL|
|
|
RF_PKTCTRL0_CRC_EN|
|
|
RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
|
|
};
|
|
|
|
void
|
|
ao_radio_idle(void)
|
|
{
|
|
if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
|
|
{
|
|
RFST = RFST_SIDLE;
|
|
do {
|
|
;
|
|
} while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
|
|
}
|
|
}
|
|
|
|
void
|
|
ao_radio_init(void) {
|
|
uint8_t i;
|
|
for (i = 0; i < sizeof (radio_setup); i += 2)
|
|
RF[radio_setup[i]] = radio_setup[i+1];
|
|
}
|