Diff: source/hic_hal/nxp/lpc4322/read_uid.c

Revision:

0:01f31e923fe2

diff -r 000000000000 -r 01f31e923fe2 source/hic_hal/nxp/lpc4322/read_uid.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/hic_hal/nxp/lpc4322/read_uid.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,48 @@
+/**
+ * @file    read_uid.c
+ * @brief
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "read_uid.h"
+#include "cortex_m.h"
+
+#define IAP_LOCATION  *(volatile unsigned int *)(0x10400100)
+static uint32_t command[5];
+static uint32_t result[5];
+typedef void (*IAP)(uint32_t[], uint32_t[]);
+
+void read_unique_id(uint32_t *id)
+{
+#if defined(INTERNAL_FLASH)
+    cortex_int_state_t local_state = cortex_int_get_and_disable();
+
+    // readUID IAP call
+    IAP iap_entry = (IAP)IAP_LOCATION;
+    command[0] = 58;
+    iap_entry(command, result);
+    *id = result[1] ^ result[2] ^ result[3] ^ result[4];
+
+    cortex_int_restore(local_state);
+#else
+    // IAP commands are only supported for parts with on-chip flash.
+    (void)command;
+    (void)result;
+    *id = 0xdeadbeef;
+#endif
+}