test for MISRA

IMProject · Sep 21, 2023 · c6125be · c6125be
1 parent f762fdc
commit c6125be
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/Inc/crc/crc32_variants/crc32.h b/Inc/crc/crc32_variants/crc32.h
@@ -57,7 +57,8 @@
 uint32_t Crc32(
     const uint8_t* crc_data_ptr,
     uint32_t crc_length,
-    bool final_xor
+    bool final_xor,
+    const uint32_t* last_crc_value
 );
 
 #endif /* UTILITY_CRC32_H_ */
diff --git a/Src/crc/crc32_variants/crc32.c b/Src/crc/crc32_variants/crc32.c
@@ -45,7 +45,8 @@ uint32_t
 Crc32(
     const uint8_t* crc_data_ptr,
     uint32_t crc_length,
-    bool final_xor) {
+    bool final_xor,
+    const uint32_t* last_crc_value) {
 
     /* CRC32 also know as Ethernet CRC (Polynomial 0x4C11DB7) */
     static const uint32_t crc_table[256] = {
@@ -83,11 +84,16 @@ Crc32(
         0xAFB010B1U, 0xAB710D06U, 0xA6322BDFU, 0xA2F33668U, 0xBCB4666DU, 0xB8757BDAU, 0xB5365D03U, 0xB1F740B4U
     };
 
+    uint32_t crc_initial_value = INITIAL_CRC32_VALUE;
+    if (NULL_PTR != last_crc_value) {
+        crc_initial_value = *last_crc_value;
+    }
+
     return Crc32Base(
                crc_table,
                crc_data_ptr,
                crc_length,
-               INITIAL_CRC32_VALUE,
+               crc_initial_value,
                FINAL_XOR_VALUE,
                REFLECTED_OUTPUT,
                REFLECTED_INPUT,