Implemented reset reason api.

Author: dustin-crossman

targets/TARGET_Cypress/TARGET_PSOC6/cy_reset_reason_api.c

@@ -0,0 +1,88 @@
+/*
+ * mbed Microcontroller Library
+ * Copyright (c) 2017-2018 Future Electronics
+ * Copyright (c) 2019, Arm Limited and affiliates.
+ * 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 "mbed_assert.h"
+#include "mbed_error.h"
+#include "cyhal_system.h"
+#include "hal/reset_reason_api.h"
+
+#if DEVICE_RESET_REASON
+
+void hal_reset_reason_get_capabilities(reset_reason_capabilities_t *cap)
+{
+    cap->reasons  = 1 << RESET_REASON_UNKNOWN;
+    cap->reasons |= 1 << RESET_REASON_WATCHDOG;
+    cap->reasons |= 1 << RESET_REASON_SOFTWARE;
+    cap->reasons |= 1 << RESET_REASON_WAKE_LOW_POWER;
+    cap->reasons |= 1 << RESET_REASON_PLATFORM;
+    cap->reasons |= 1 << RESET_REASON_MULTIPLE;
+}
+
+reset_reason_t hal_reset_reason_get(void)
+{
+    cyhal_reset_reason_t hal_reason = cyhal_system_get_reset_reason();
+
+    reset_reason_t reason = RESET_REASON_UNKNOWN;
+    uint8_t count = 0;
+    if(CYHAL_SYSTEM_RESET_WDT & hal_reason)             {
+        reason = RESET_REASON_WATCHDOG;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_ACTIVE_FAULT & hal_reason)    {
+        reason = RESET_REASON_PLATFORM;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_DEEPSLEEP_FAULT & hal_reason) {
+        reason = RESET_REASON_PLATFORM;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_SOFT & hal_reason)            {
+        reason = RESET_REASON_SOFTWARE;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_HIB_WAKEUP & hal_reason)      {
+        reason = RESET_REASON_WAKE_LOW_POWER;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_WCO_ERR & hal_reason)         {
+        reason = RESET_REASON_PLATFORM;
+        count++;
+    }
+    if(CYHAL_SYSTEM_RESET_SYS_CLK_ERR & hal_reason)     {
+        reason = RESET_REASON_PLATFORM;
+        count++;
+    }
+
+    if(count > 1)
+        reason = RESET_REASON_MULTIPLE;
+
+    return reason;
+}
+
+uint32_t hal_reset_reason_get_raw(void)
+{
+    return Cy_SysLib_GetResetReason();
+}
+
+void hal_reset_reason_clear(void)
+{
+    Cy_SysLib_ClearResetReason();
+}
+
+#endif // DEVICE_RESET_REASON

targets/targets.json

@@ -13398,6 +13398,7 @@
             "PORTINOUT",
             "PWMOUT",
             "QSPI",
+            "RESET_REASON",
             "RTC",
             "SERIAL",
             "SERIAL_FC",