more code

code/Core/Src/crc.c

@@ -0,0 +1,24 @@
+/*
+ * crc.c
+ *
+ *  Created on: 19 Dec 2025
+ *      Author: janik
+ */
+
+#include "crc.h"
+
+void CRC8_107_add(CRC8_107 *ctx, uint8_t data)
+{
+    ctx->crc ^= ((uint32_t)data << 8);
+    for (size_t bit_n = 0; bit_n < 8; bit_n++) {
+        if (ctx->crc & 0x8000u) {
+            ctx->crc ^= ((uint32_t)0x1070u << 3);  // same as 0x8380
+        }
+        ctx->crc <<= 1;
+    }
+}
+
+uint8_t CRC8_107_getChecksum(const CRC8_107 *ctx)
+{
+    return (uint8_t)(ctx->crc >> 8);
+}