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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/01/13 14:34:59 UTC
[GitHub] [incubator-nuttx] jarivanewijk opened a new pull request #5220: S32K1XX: implement uniqueid
jarivanewijk opened a new pull request #5220:
URL: https://github.com/apache/incubator-nuttx/pull/5220
## Summary
Adds s32k1xx_get_uniqueid which can be used to read the MCU unique ID. Also provides a board_uniqueid implementation for S32K144EVB, which allows the MCU/board unique ID to be retrieved through the boardctl interface (after enabling CONFIG_BOARDCTL_UNIQUEID).
## Impact
## Testing
Tested on S32K144EVB.
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[GitHub] [incubator-nuttx] davids5 merged pull request #5220: S32K1XX: implement uniqueid
Posted by GitBox <gi...@apache.org>.
davids5 merged pull request #5220:
URL: https://github.com/apache/incubator-nuttx/pull/5220
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[GitHub] [incubator-nuttx] pkarashchenko commented on a change in pull request #5220: S32K1XX: implement uniqueid
Posted by GitBox <gi...@apache.org>.
pkarashchenko commented on a change in pull request #5220:
URL: https://github.com/apache/incubator-nuttx/pull/5220#discussion_r784184885
##########
File path: arch/arm/src/s32k1xx/s32k1xx_uid.c
##########
@@ -0,0 +1,79 @@
+/****************************************************************************
+ * arch/arm/src/s32k1xx/s32k1xx_uid.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <stddef.h>
+#include <stdint.h>
+#include <assert.h>
+
+#include "arm_arch.h"
+
+#include "hardware/s32k1xx_sim.h"
+#include "s32k1xx_uid.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: s32k1xx_get_uniqueid
+ ****************************************************************************/
+
+void s32k1xx_get_uniqueid(uint8_t *uniqueid)
+{
+ uint32_t regval;
+
+ DEBUGASSERT(uniqueid != NULL);
+
+ /* Retrieve all 16 bytes (128 bits) of the unique identifier and store the
+ * individual bytes in order from lowest byte first to highest byte last.
+ */
+
+ regval = getreg32(S32K1XX_SIM_UIDL);
+
+ uniqueid[0] = (uint8_t)((regval & 0x000000ff) >> 0);
Review comment:
Probably can just `memcpy` instead
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