给头文件添加extern "C"保护，以便在c++环境也能正常使用

Kconfig

@@ -0,0 +1,165 @@
+
+# Kconfig file for package crclib
+
+menuconfig PKG_USING_CRCLIB
+    bool "crclib : A library of functions with 8-bit ,16-bit ,32-bit crc check calculations."
+    default n
+
+if PKG_USING_CRCLIB
+
+    config PKG_CRCLIB_PATH
+        string
+        default "/packages/misc/crclib"
+
+    config CRCLIB_USING_CRC8
+        bool "using 8 bit crc"
+        default y
+
+    if CRCLIB_USING_CRC8
+        config CRC8_USING_CONST_TABLE
+            bool "using const table"
+            default y
+
+        choice
+            prompt "crc8 polynome"
+            default CRC8_POLY_8C
+            help
+                Select crc8 polynome
+            config CRC8_POLY_8C
+                bool "x8+x5+x4+1"
+            config CRC8_POLY_D9
+                bool "x8+x7+x4+x3+x+1"
+            config CRC8_POLY_CUSTOM
+                bool "custom value"
+        endchoice
+
+        if CRC8_POLY_CUSTOM
+            config CRC8_POLY_CUSTOM_STRING
+                int "crc8 polynome value (int)"
+                default 0
+        endif
+
+        config CRC8_POLY
+            int
+            default 140 if CRC8_POLY_8C
+            default 217 if CRC8_POLY_D9
+            default CRC8_POLY_CUSTOM_STRING if CRC8_POLY_CUSTOM
+    endif
+
+    config CRCLIB_USING_CRC16
+        bool "using 16 bit crc"
+        default y
+
+    if CRCLIB_USING_CRC16
+        config CRC16_USING_CONST_TABLE
+            bool "using const table"
+            default y
+
+        choice
+            prompt "crc16 polynome"
+            default CRC16_POLY_A001
+            help
+                Select crc16 polynome
+            config CRC16_POLY_A001
+                bool "x16+x15+x2+1 (MODBUS,IBM,SDLC)"
+            config CRC16_POLY_8404
+                bool "x16+x12+x5+1 (CCITT,ISO,HDLC,ITUX25,PPP-FCS)"
+            config CRC16_POLY_CUSTOM
+                bool "custom value"
+        endchoice
+
+        if CRC16_POLY_CUSTOM
+            config CRC16_POLY_CUSTOM_STRING
+                int "crc16 polynome value (int)"
+                default 0
+        endif
+
+        config CRC16_POLY
+            int
+            default 40961 if CRC16_POLY_A001
+            default 33800 if CRC16_POLY_8404
+            default CRC16_POLY_CUSTOM_STRING if CRC16_POLY_CUSTOM
+    endif
+
+    config CRCLIB_USING_CRC32
+        bool "using 32 bit crc"
+        default y
+
+    if CRCLIB_USING_CRC32
+        config CRC32_USING_CONST_TABLE
+            bool "using const table"
+            default y
+
+        choice
+            prompt "crc32 polynome"
+            default CRC32_POLY_EDB88320
+            help
+                Select crc32 polynome
+            config CRC32_POLY_EDB88320
+                bool "x32+x26+x23+...+x2+x+1 (ZIP,RAR,IEEE,LAN/FDDI,PPP-FCS)"
+            config CRC32_POLY_82F63B78
+                bool "x32+x28+x27+...+x8+x6+1 (SCTP)"
+            config CRC32_POLY_CUSTOM
+                bool "custom value"
+        endchoice
+
+        if CRC32_POLY_CUSTOM
+            config CRC32_POLY_CUSTOM_STRING
+                int "crc32 polynome value (int)"
+                default 0
+        endif
+
+        config CRC32_POLY
+            int
+            default 3988292384 if CRC32_POLY_EDB88320
+            default 2197175160 if CRC32_POLY_82F63B78
+            default CRC32_POLY_CUSTOM_STRING if CRC32_POLY_CUSTOM
+    endif
+
+    config CRCLIB_USING_CRC8_EX
+        bool "using 8 bit crc expand"
+        default n
+
+    config CRCLIB_USING_CRC16_EX
+        bool "using 16 bit crc expand"
+        default n
+
+    config CRCLIB_USING_CRC32_EX
+        bool "using 32 bit crc expand"
+        default n
+
+    config CRCLIB_USING_CRC16_EX_SAMPLE
+        bool "using 16 bit crc expand sample"
+        default n
+
+    config CRCLIB_USING_CRC_HW
+        bool "using hardware crc"
+        default n
+
+    config CRCLIB_USING_CRC_HW_SAMPLE
+        bool "using hardware crc sample"
+        default n
+
+    choice
+        prompt "Version"
+        default PKG_USING_CRCLIB_V102
+        help
+            Select the package version
+        config PKG_USING_CRCLIB_LATEST_VERSION
+            bool "latest"
+        config PKG_USING_CRCLIB_V102
+            bool "v1.02"
+        config PKG_USING_CRCLIB_V101
+            bool "v1.01"
+        config PKG_USING_CRCLIB_V100
+            bool "v1.00"
+    endchoice
+
+    config PKG_CRCLIB_VER
+       string
+       default "latest" if PKG_USING_CRCLIB_LATEST_VERSION
+       default "v1.02"  if PKG_USING_CRCLIB_V102
+       default "v1.01"  if PKG_USING_CRCLIB_V101
+       default "v1.00"  if PKG_USING_CRCLIB_V100
+
+endif

SConscript

@@ -2,8 +2,8 @@ from building import *
 
 cwd = GetCurrentDir()
 path = [cwd+'/inc']
-src  = Glob('src/*.c')
-
-group = DefineGroup('crclib', src, depend = ['PKG_USING_CRCLIB'], CPPPATH = path)
+src = Glob('src/*.c')
 
-Return('group')
+group = DefineGroup('crclib', src, depend=['PKG_USING_CRCLIB'], CPPPATH=path)
+
+Return('group')

inc/crc.h

@@ -9,15 +9,20 @@
 #ifndef __CRC_H__
 #define __CRC_H__
 
-#include <crc8.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <crc16.h>
-#include <crc32.h>
-#include <crc8_ex.h>
 #include <crc16_ex.h>
+#include <crc32.h>
 #include <crc32_ex.h>
-#include <crc_hw_stm32.h>
+#include <crc8.h>
+#include <crc8_ex.h>
 #include <crc_hw_hc32.h>
 #include <crc_hw_n32.h>
-
+#include <crc_hw_stm32.h>
+#ifdef __cplusplus
+}
+#endif
 #endif
-

inc/crc16.h

@@ -9,38 +9,44 @@
 #ifndef __CRC16_H__
 #define __CRC16_H__
 
-#include "typedef.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "crc_cfg.h"
+#include "typedef.h"
 
 #ifdef CRCLIB_USING_CRC16
 
-#if (!defined(CRC16_USING_CONST_TABLE) || ((CRC16_POLY != 0xA001) && (CRC16_POLY != 0x8408)))
-/* 
+#if (!defined(CRC16_USING_CONST_TABLE) ||                                      \
+     ((CRC16_POLY != 0xA001) && (CRC16_POLY != 0x8408)))
+/*
  * @brief   cyclic initialize crc table
  * @param   none
  * @retval  none
  */
 void crc16_table_init(void);
 #endif
 
-/* 
+/*
  * @brief   cyclic calculation crc check value
  * @param   init_val    - initial value
  * @param   pdata       - datas pointer
  * @param   len         - datas len
- * @retval  calculated result 
+ * @retval  calculated result
  */
-u16 crc16_cyc_cal(u16 init_val, u8 *pdata, u32 len);
+uint16_t crc16_cyc_cal(uint16_t init_val, uint8_t *pdata, uint32_t len);
 
-/* 
+/*
  * @brief   calculation crc check value, initial is 0xFFFF
  * @param   pdata       - datas pointer
  * @param   len         - datas len
- * @retval  calculated result 
+ * @retval  calculated result
  */
-u16 crc16_cal(u8 *pdata, u32 len);
+uint16_t crc16_cal(uint8_t *pdata, uint32_t len);
 
 #endif
-
+#ifdef __cplusplus
+}
+#endif
 #endif
-

inc/crc16_ex.h

@@ -9,44 +9,50 @@
 #ifndef __CRC16_EX_H__
 #define __CRC16_EX_H__
 
-#include "typedef.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "crc_cfg.h"
+#include "typedef.h"
 
 #ifdef CRCLIB_USING_CRC16_EX
 
-#define CRC16_EX_INIT_VAL   0xFFFF
+#define CRC16_EX_INIT_VAL 0xFFFF
 
-typedef struct{
-    u16 table[256];
-}crc16_inst_t;
+typedef struct {
+  u16 table[256];
+} crc16_inst_t;
 
-/* 
+/*
  * @brief   initialize crc instance
  * @param   hinst       - instance handle
  * @param   poly        - polynomial of crc
  * @retval  none
  */
 void crc16_ex_init(crc16_inst_t *hinst, u16 poly);
 
-/* 
+/*
  * @brief   cyclic calculation crc check value
  * @param   hinst       - instance handle
  * @param   init_val    - initial value
  * @param   pdata       - datas pointer
  * @param   len         - datas len
- * @retval  calculated result 
+ * @retval  calculated result
  */
 u16 crc16_ex_cyc_cal(crc16_inst_t *hinst, u16 init_val, u8 *pdata, u32 len);
 
-/* 
+/*
  * @brief   calculation crc check value, initial is 0xFFFF
  * @param   hinst       - instance handle
  * @param   pdata       - datas pointer
  * @param   len         - datas len
- * @retval  calculated result 
+ * @retval  calculated result
  */
 u16 crc16_ex_cal(crc16_inst_t *hinst, u8 *pdata, u32 len);
 
+#endif
+#ifdef __cplusplus
+}
 #endif
 #endif
-

inc/crc16_ex_sample.h

@@ -9,19 +9,27 @@
 #ifndef __CRC16_EX_SAMPLE_H__
 #define __CRC16_EX_SAMPLE_H__
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <crc.h>
 
 #ifdef CRCLIB_USING_CRC16_EX
 #ifdef CRCLIB_USING_CRC16_EX_SAMPLE
 
-#define CRC16_EX_SAMPLE_POLY        0xA001
+#define CRC16_EX_SAMPLE_POLY 0xA001
 
 extern crc16_inst_t crc16_ex_sample_inst;
 
-#define CRC16_EX_SAMPLE_CYC_CAL(init, pd, len)  crc16_ex_cyc_cal(&crc16_ex_sample_inst, init, pd, len)
-#define CRC16_EX_SAMPLE_CAL(pd, len)            crc16_ex_cal(&crc16_ex_sample_inst, pd, len)
+#define CRC16_EX_SAMPLE_CYC_CAL(init, pd, len)                                 \
+  crc16_ex_cyc_cal(&crc16_ex_sample_inst, init, pd, len)
+#define CRC16_EX_SAMPLE_CAL(pd, len)                                           \
+  crc16_ex_cal(&crc16_ex_sample_inst, pd, len)
 
 #endif
 #endif
+#ifdef __cplusplus
+}
+#endif
 #endif
-