altos: Disable cc1120 preamble for RDF and APRS modes

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

diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c
index 4f09358ce327d31e6d0ce345996a3887a13e9e37..9b54992cc9cc2449f2ceae7da2faf0b6790de958 100644 (file)
--- a/src/drivers/ao_cc1120.c
+++ b/src/drivers/ao_cc1120.c
@@ -326,6 +326,8 @@ static const uint16_t packet_setup[] = {
                                 (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) |
                                 (0 << CC1120_PKT_CFG0_UART_MODE_EN) |
                                 (0 << CC1120_PKT_CFG0_UART_SWAP_EN)),
+        CC1120_PREAMBLE_CFG1,  ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_4_BYTES << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) |
+                                (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)),
        AO_CC1120_MARC_GPIO_IOCFG,              CC1120_IOCFG_GPIO_CFG_MARC_MCU_WAKEUP,
 };
 
@@ -389,6 +391,8 @@ static const uint16_t rdf_setup[] = {
                                 (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) |
                                 (0 << CC1120_PKT_CFG0_UART_MODE_EN) |
                                 (0 << CC1120_PKT_CFG0_UART_SWAP_EN)),
+        CC1120_PREAMBLE_CFG1,  ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_NONE << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) |
+                                (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)),
 };
 
 /*
@@ -433,6 +437,8 @@ static const uint16_t aprs_setup[] = {
                                 (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) |
                                 (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) |
                                 (0 << CC1120_PKT_CFG1_APPEND_STATUS)),
+        CC1120_PREAMBLE_CFG1,  ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_NONE << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) |
+                                (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)),
 };
 
 #define AO_PKT_CFG0_INFINITE ((0 << CC1120_PKT_CFG0_RESERVED7) |       \