--- /dev/null
+/*
+ * 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; version 2 of the License.
+ *
+ * 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.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 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_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_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,
+};
+
+static __code uint8_t rdf_setup[] = {
+ RF_MDMCFG4_OFF, ((CHANBW_E << RF_MDMCFG4_CHANBW_E_SHIFT) |
+ (CHANBW_M << 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 |
+ RF_MDMCFG2_MOD_FORMAT_GFSK |
+ RF_MDMCFG2_SYNC_MODE_15_16_THRES),
+ RF_MDMCFG1_OFF, (RF_MDMCFG1_FEC_DIS |
+ RF_MDMCFG1_NUM_PREAMBLE_2 |
+ (2 << RF_MDMCFG1_CHANSPC_E_SHIFT)),
+
+ RF_DEVIATN_OFF, ((RDF_DEVIATION_E << RF_DEVIATN_DEVIATION_E_SHIFT) |
+ (RDF_DEVIATION_M << RF_DEVIATN_DEVIATION_M_SHIFT)),
+
+ /* packet length is set in-line */
+ RF_PKTCTRL1_OFF, ((1 << PKTCTRL1_PQT_SHIFT)|
+ PKTCTRL1_ADR_CHK_NONE),
+ RF_PKTCTRL0_OFF, (RF_PKTCTRL0_PKT_FORMAT_NORMAL|
+ RF_PKTCTRL0_LENGTH_CONFIG_FIXED),
+};
+
+static __code uint8_t fixed_pkt_setup[] = {
+ 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 -- now set inline */
+ 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),
+};
+
+__xdata uint8_t ao_radio_dma;
+__xdata uint8_t ao_radio_dma_done;
+__xdata uint8_t ao_radio_done;
+__xdata uint8_t ao_radio_abort;
+__xdata uint8_t ao_radio_mutex;
+
+void
+ao_radio_general_isr(void) __interrupt 16
+{
+ S1CON &= ~0x03;
+ if (RFIF & RFIF_IM_TIMEOUT) {
+ ao_radio_recv_abort();
+ RFIF &= ~ RFIF_IM_TIMEOUT;
+ } else if (RFIF & RFIF_IM_DONE) {
+ ao_radio_done = 1;
+ ao_wakeup(&ao_radio_done);
+ RFIF &= ~RFIF_IM_DONE;
+ }
+}
+
+void
+ao_radio_set_packet(void)
+{
+ uint8_t i;
+ for (i = 0; i < sizeof (fixed_pkt_setup); i += 2)
+ RF[fixed_pkt_setup[i]] = fixed_pkt_setup[i+1];
+}
+
+void
+ao_radio_idle(void)
+{
+ if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
+ {
+ do {
+ RFST = RFST_SIDLE;
+ ao_yield();
+ } while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
+ }
+}
+
+void
+ao_radio_get(uint8_t len)
+{
+ ao_config_get();
+ ao_mutex_get(&ao_radio_mutex);
+ ao_radio_idle();
+ RF_CHANNR = ao_config.radio_channel;
+ RF_FREQ2 = (uint8_t) (ao_config.radio_setting >> 16);
+ RF_FREQ1 = (uint8_t) (ao_config.radio_setting >> 8);
+ RF_FREQ0 = (uint8_t) (ao_config.radio_setting);
+ RF_PKTLEN = len;
+}
+
+
+void
+ao_radio_send(__xdata void *packet, uint8_t size) __reentrant
+{
+ ao_radio_get(size);
+ ao_radio_done = 0;
+ ao_dma_set_transfer(ao_radio_dma,
+ packet,
+ &RFDXADDR,
+ size,
+ DMA_CFG0_WORDSIZE_8 |
+ DMA_CFG0_TMODE_SINGLE |
+ DMA_CFG0_TRIGGER_RADIO,
+ DMA_CFG1_SRCINC_1 |
+ DMA_CFG1_DESTINC_0 |
+ DMA_CFG1_PRIORITY_HIGH);
+ ao_dma_start(ao_radio_dma);
+ RFST = RFST_STX;
+ __critical while (!ao_radio_done)
+ ao_sleep(&ao_radio_done);
+ ao_radio_put();
+}
+
+uint8_t
+ao_radio_recv(__xdata void *packet, uint8_t size) __reentrant
+{
+ ao_radio_abort = 0;
+ ao_radio_get(size - 2);
+ ao_dma_set_transfer(ao_radio_dma,
+ &RFDXADDR,
+ packet,
+ size,
+ DMA_CFG0_WORDSIZE_8 |
+ DMA_CFG0_TMODE_SINGLE |
+ DMA_CFG0_TRIGGER_RADIO,
+ DMA_CFG1_SRCINC_0 |
+ DMA_CFG1_DESTINC_1 |
+ DMA_CFG1_PRIORITY_HIGH);
+ ao_dma_start(ao_radio_dma);
+ RFST = RFST_SRX;
+
+ /* Wait for DMA to be done, for the radio receive process to
+ * get aborted or for a receive timeout to fire
+ */
+ __critical while (!ao_radio_dma_done && !ao_radio_abort)
+ if (ao_sleep(&ao_radio_dma_done))
+ break;
+
+ /* If recv was aborted, clean up by stopping the DMA engine
+ * and idling the radio
+ */
+ if (!ao_radio_dma_done) {
+ ao_dma_abort(ao_radio_dma);
+ ao_radio_idle();
+ }
+ ao_radio_put();
+ return ao_radio_dma_done;
+}
+
+/*
+ * Wake up a task waiting to receive a radio packet
+ * and tell them to abort the transfer
+ */
+
+void
+ao_radio_recv_abort(void)
+{
+ ao_radio_abort = 1;
+ ao_wakeup(&ao_radio_dma_done);
+}
+
+__xdata ao_radio_rdf_value = 0x55;
+
+void
+ao_radio_rdf(int ms)
+{
+ uint8_t i;
+ uint8_t pkt_len;
+
+ /*
+ * Compute the packet length as follows:
+ *
+ * 2000 bps (for a 1kHz tone)
+ * so, for 'ms' milliseconds, we need
+ * 2 * ms bits, or ms / 4 bytes
+ */
+ if (ms > (255 * 4))
+ ms = 255 * 4;
+ pkt_len = ms >> 2;
+
+ ao_radio_abort = 0;
+ ao_radio_get(pkt_len);
+ ao_radio_done = 0;
+ for (i = 0; i < sizeof (rdf_setup); i += 2)
+ RF[rdf_setup[i]] = rdf_setup[i+1];
+
+ ao_dma_set_transfer(ao_radio_dma,
+ &ao_radio_rdf_value,
+ &RFDXADDR,
+ pkt_len,
+ DMA_CFG0_WORDSIZE_8 |
+ DMA_CFG0_TMODE_SINGLE |
+ DMA_CFG0_TRIGGER_RADIO,
+ DMA_CFG1_SRCINC_0 |
+ DMA_CFG1_DESTINC_0 |
+ DMA_CFG1_PRIORITY_HIGH);
+ ao_dma_start(ao_radio_dma);
+ RFST = RFST_STX;
+ __critical while (!ao_radio_done && !ao_radio_abort)
+ ao_sleep(&ao_radio_done);
+ if (!ao_radio_done) {
+ ao_dma_abort(ao_radio_dma);
+ ao_radio_idle();
+ }
+ ao_radio_set_packet();
+ ao_radio_put();
+}
+
+void
+ao_radio_rdf_abort(void)
+{
+ ao_radio_abort = 1;
+ ao_wakeup(&ao_radio_done);
+}
+
+
+/* Output carrier */
+void
+ao_radio_test(void)
+{
+ uint8_t mode = 2;
+ static __xdata radio_on;
+ ao_cmd_white();
+ if (ao_cmd_lex_c != '\n') {
+ ao_cmd_decimal();
+ mode = (uint8_t) ao_cmd_lex_u32;
+ }
+ mode++;
+ if ((mode & 2) && !radio_on) {
+#if HAS_MONITOR
+ ao_set_monitor(0);
+#endif
+#if PACKET_HAS_SLAVE
+ ao_packet_slave_stop();
+#endif
+ ao_radio_get(0xff);
+ RFST = RFST_STX;
+ radio_on = 1;
+ }
+ if (mode == 3) {
+ printf ("Hit a character to stop..."); flush();
+ getchar();
+ putchar('\n');
+ }
+ if ((mode & 1) && radio_on) {
+ ao_radio_idle();
+ ao_radio_put();
+ radio_on = 0;
+ }
+}
+
+__code struct ao_cmds ao_radio_cmds[] = {
+ { ao_radio_test, "C <1 start, 0 stop, none both>\0Radio carrier test" },
+ { 0, NULL },
+};
+
+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];
+ ao_radio_set_packet();
+ ao_radio_dma_done = 1;
+ ao_radio_dma = ao_dma_alloc(&ao_radio_dma_done);
+ RFIF = 0;
+ RFIM = RFIM_IM_TIMEOUT|RFIM_IM_DONE;
+ IEN2 |= IEN2_RFIE;
+ ao_cmd_register(&ao_radio_cmds[0]);
+}
projects / fw / altos / blobdiff