altos: Configure cc115l sync byte count for each radio mode

two sync bytes for packet mode, disable sync for rdf/aprs mode.

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

diff --git a/src/drivers/ao_cc115l.c b/src/drivers/ao_cc115l.c
index 1d8211f6c51fee7153d24d0ffe0103cd96d1a526..6da1a6786a88e9af3285d529b3f28e790d909138 100644 (file)
--- a/src/drivers/ao_cc115l.c
+++ b/src/drivers/ao_cc115l.c
@@ -282,6 +282,10 @@ static const uint16_t packet_setup[] = {
        CC115L_MDMCFG4,         ((0xf << 4) |
                                 (PACKET_DRATE_E << CC115L_MDMCFG4_DRATE_E)),
        CC115L_MDMCFG3,         (PACKET_DRATE_M),
+       CC115L_MDMCFG2,         (0x00 |
+                                (CC115L_MDMCFG2_MOD_FORMAT_GFSK << CC115L_MDMCFG2_MOD_FORMAT) |
+                                (0 << CC115L_MDMCFG2_MANCHESTER_EN) |
+                                (CC115L_MDMCFG2_SYNC_MODE_16BITS << CC115L_MDMCFG2_SYNC_MODE)),
 };
 
 
@@ -317,6 +321,10 @@ static const uint16_t rdf_setup[] = {
        CC115L_MDMCFG4,         ((0xf << 4) |
                                 (RDF_DRATE_E << CC115L_MDMCFG4_DRATE_E)),
        CC115L_MDMCFG3,         (RDF_DRATE_M),
+       CC115L_MDMCFG2,         (0x00 |
+                                (CC115L_MDMCFG2_MOD_FORMAT_GFSK << CC115L_MDMCFG2_MOD_FORMAT) |
+                                (0 << CC115L_MDMCFG2_MANCHESTER_EN) |
+                                (CC115L_MDMCFG2_SYNC_MODE_NONE << CC115L_MDMCFG2_SYNC_MODE)),
 };
 
 /*
@@ -348,6 +356,10 @@ static const uint16_t aprs_setup[] = {
        CC115L_MDMCFG4,         ((0xf << 4) |
                                 (APRS_DRATE_E << CC115L_MDMCFG4_DRATE_E)),
        CC115L_MDMCFG3,         (APRS_DRATE_M),
+       CC115L_MDMCFG2,         (0x00 |
+                                (CC115L_MDMCFG2_MOD_FORMAT_GFSK << CC115L_MDMCFG2_MOD_FORMAT) |
+                                (0 << CC115L_MDMCFG2_MANCHESTER_EN) |
+                                (CC115L_MDMCFG2_SYNC_MODE_NONE << CC115L_MDMCFG2_SYNC_MODE)),
 };
 
 #define AO_PKTCTRL0_INFINITE   ((CC115L_PKTCTRL0_PKT_FORMAT_NORMAL << CC115L_PKTCTRL0_PKT_FORMAT) | \
@@ -430,16 +442,16 @@ static const uint16_t radio_setup[] = {
        AO_CC115L_DONE_INT_GPIO_IOCFG,      CC115L_IOCFG_GPIO_CFG_PA_PD | (1 << CC115L_IOCFG_GPIO_INV),
 
         CC115L_FIFOTHR,                     0x47,       /* TX FIFO Thresholds */
-        CC115L_PKTCTRL0,                    0x05,       /* Packet Automation Control */
         CC115L_FREQ2,                       0x10,       /* Frequency Control Word, High Byte */
         CC115L_FREQ1,                       0xb6,       /* Frequency Control Word, Middle Byte */
         CC115L_FREQ0,                       0xa5,       /* Frequency Control Word, Low Byte */
-        CC115L_MDMCFG4,                     0xfa,       /* Modem Configuration */
-        CC115L_MDMCFG3,                     0x83,       /* Modem Configuration */
         CC115L_MDMCFG2,                     0x13,       /* Modem Configuration */
-        CC115L_MDMCFG1,                     0x21,       /* Modem Configuration */
+       CC115L_MDMCFG1,                     (0x00 |
+                                            (CC115L_MDMCFG1_NUM_PREAMBLE_4 << CC115L_MDMCFG1_NUM_PREAMBLE) |
+                                            (1 << CC115L_MDMCFG1_CHANSPC_E)),
+       CC115L_MDMCFG0,                     248,        /* Channel spacing M value (100kHz channels) */
         CC115L_DEVIATN,                     0x35,       /* Modem Deviation Setting */
-        CC115L_MCSM0,                       0x18,       /* Main Radio Control State Machine Configuration */
+        CC115L_MCSM0,                       0x38,       /* Main Radio Control State Machine Configuration */
         CC115L_RESERVED_0X20,               0xfb,       /* Use setting from SmartRF Studio */
         CC115L_FSCAL3,                      0xe9,       /* Frequency Synthesizer Calibration */
         CC115L_FSCAL2,                      0x2a,       /* Frequency Synthesizer Calibration */
@@ -448,8 +460,7 @@ static const uint16_t radio_setup[] = {
         CC115L_TEST2,                       0x81,       /* Various Test Settings */
         CC115L_TEST1,                       0x35,       /* Various Test Settings */
         CC115L_TEST0,                       0x09,       /* Various Test Settings */
-
-       CC115L_PA,                          0x00,        /* Power setting (0dBm) */
+       CC115L_PA,                          0x00,       /* Power setting (as low as possible) */
 };
 
 static uint8_t ao_radio_configured = 0;