初始提交

2024-09-28 14:24:04 +08:00
commit c756587541
5564 changed files with 2413077 additions and 0 deletions
--- a/app/smart_grid/protocol/proto_acm.c
+++ b/app/smart_grid/protocol/proto_acm.c
@@ -0,0 +1,71 @@
+/****************************************************************************
+
+Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
+
+This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
+be copied by any method or incorporated into another program without
+the express written consent of Aerospace C.Power. This Information or any portion
+thereof remains the property of Aerospace C.Power. The Information contained herein
+is believed to be accurate and Aerospace C.Power assumes no responsibility or
+liability for its use in any way and conveys no license or title under
+any patent or copyright and makes no representation or warranty that this
+Information is free from patent or copyright infringement.
+
+****************************************************************************/
+
+/* iot common header files */
+#include "os_types_api.h"
+
+/* iot common header files */
+#include "iot_crc_api.h"
+#include "iot_io_api.h"
+
+/* smart grid internal header files */
+#include "iot_sg_fr.h"
+#include "proto_acm.h"
+
+#if (IOT_SMART_GRID_CCO_ACM_ENABLE)
+
+void proto_acm_check_frame_handler(uint8_t *buffer, uint32_t buffer_len,
+    bool_t *is_frame)
+{
+    uint16_t frame_len;
+    uint16_t fcs, fcs_offset;
+    uint16_t frame_min_len;
+
+    frame_min_len = sizeof(proto_acm_hdr_t) + sizeof(proto_acm_tail_t);
+
+    if (buffer_len < frame_min_len) {
+        *is_frame = false;
+        return;
+    }
+
+    if (buffer[0] != PROTO_ACM_SOF_BYTE
+        || buffer[buffer_len - 1] != PROTO_ACM_EOF_BYTE) {
+        *is_frame = false;
+        return;
+    }
+
+    frame_len = (uint16_t)buffer[2];
+    frame_len = (frame_len << 8) | (uint16_t)buffer[1];
+    frame_len += frame_min_len;
+
+    if (frame_len != buffer_len) {
+        *is_frame = false;
+        return;
+    }
+
+    fcs_offset = (uint16_t)(buffer_len - sizeof(proto_acm_tail_t));
+    fcs = (uint16_t)buffer[fcs_offset + 1];
+    fcs = (fcs << 8) | (uint16_t)buffer[fcs_offset];
+    if (fcs != iot_getcrc16(&buffer[PROTO_ACM_SOF_BYTE_LEN],
+        buffer_len - PROTO_ACM_SOF_BYTE_LEN - sizeof(proto_acm_tail_t),
+        IOT_CRC16_TYPE_X25)) {
+        /* checksum failure */
+        *is_frame = false;
+        return;
+    }
+    *is_frame = true;
+}
+
+#endif  /* IOT_SMART_GRID_CCO_ACM_ENABLE */