Use autotools, move altos to src subdir

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 286 insertions, 0 deletions

diff --git a/src/ao_radio.c b/src/ao_radio.c
new file mode 100644
index 00000000..ca1ec7e8
--- /dev/null
+++ b/src/ao_radio.c
@@ -0,0 +1,286 @@
+/*
+ * 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 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
+
+/* 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 >> 0) & 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,		sizeof (struct ao_telemetry),
+
+	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 telemetry_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 */
+	RF_PKTLEN_OFF,		sizeof (struct ao_telemetry),
+	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_mutex;
+
+static void
+ao_radio_idle(void)
+{
+	if (RF_MARCSTATE != RF_MARCSTATE_IDLE)
+	{
+		RFST = RFST_SIDLE;
+		do {
+			ao_yield();
+		} while (RF_MARCSTATE != RF_MARCSTATE_IDLE);
+	}
+}
+
+void
+ao_radio_send(__xdata struct ao_telemetry *telemetry) __reentrant
+{
+	ao_config_get();
+	ao_mutex_get(&ao_radio_mutex);
+	ao_radio_idle();
+	RF_CHANNR = ao_config.radio_channel;
+	ao_dma_set_transfer(ao_radio_dma,
+			    telemetry,
+			    &RFDXADDR,
+			    sizeof (struct ao_telemetry),
+			    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_dma_done)
+		ao_sleep(&ao_radio_dma_done);
+	ao_mutex_put(&ao_radio_mutex);
+}
+
+void
+ao_radio_recv(__xdata struct ao_radio_recv *radio) __reentrant
+{
+	ao_config_get();
+	ao_mutex_get(&ao_radio_mutex);
+	ao_radio_idle();
+	RF_CHANNR = ao_config.radio_channel;
+	ao_dma_set_transfer(ao_radio_dma,
+			    &RFDXADDR,
+			    radio,
+			    sizeof (struct ao_radio_recv),
+			    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;
+	__critical while (!ao_radio_dma_done)
+		ao_sleep(&ao_radio_dma_done);
+	ao_mutex_put(&ao_radio_mutex);
+}
+
+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_dma_done = 1;
+	ao_radio_dma = ao_dma_alloc(&ao_radio_dma_done);
+}