From e182f6082db427bf3c130d2459cabd4f2eb35a3e Mon Sep 17 00:00:00 2001
From: WXK <287788329@qq.com>
Date: 星期五, 05 一月 2024 15:18:46 +0800
Subject: [PATCH] 版本v1.0
---
Src/decadriver/deca_device.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/Src/decadriver/deca_device.c b/Src/decadriver/deca_device.c
index 9cadd8b..1c8e7d4 100644
--- a/Src/decadriver/deca_device.c
+++ b/Src/decadriver/deca_device.c
@@ -3453,7 +3453,31 @@
dwt_readfromdevice(TX_CAL_ID, TC_SARL_SAR_LVBAT_OFFSET, 1, &vbat_raw);
return (vbat_raw);
}
+#define B20_SIGN_EXTEND_TEST (0x00100000UL)
+#define B20_SIGN_EXTEND_MASK (0xFFF00000UL)
+#define DRX_CARRIER_INT_OFFSET 0x28
+#define DRX_CARRIER_INT_LEN (3)
+#define DRX_CARRIER_INT_MASK 0x001FFFFF
+int32_t dwt_readcarrierintegrator(void)
+{
+ uint32_t regval = 0 ;
+ int j ;
+ uint8_t buffer[DRX_CARRIER_INT_LEN] ;
+ /* Read 3 bytes into buffer (21-bit quantity) */
+
+ dwt_readfromdevice(DRX_CONF_ID,DRX_CARRIER_INT_OFFSET,DRX_CARRIER_INT_LEN, buffer) ;
+
+ for (j = 2 ; j >= 0 ; j --) // arrange the three bytes into an unsigned integer value
+ {
+ regval = (regval << 8) + buffer[j] ;
+ }
+
+ if (regval & B20_SIGN_EXTEND_TEST) regval |= B20_SIGN_EXTEND_MASK ; // sign extend bit #20 to whole word
+ else regval &= DRX_CARRIER_INT_MASK ; // make sure upper bits are clear if not sign extending
+
+ return (int32_t) regval ; // cast unsigned value to signed quantity.
+}
/* ===============================================================================================
List of expected (known) device ID handled by this software
--
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