From 851eca4ddb7196e05db548b4379f569f6ad8e820 Mon Sep 17 00:00:00 2001
From: Kalle-Gustav Kruus <kalle-gustav.kruus@ut.ee>
Date: Tue, 3 Nov 2020 18:05:21 +0200
Subject: [PATCH] added naieve way of sleeping seems to work at first glance

---
 .../TARGET_Apollo3/device/sleep.c             | 28 +++++++++++++++++++
 targets/targets.json                          |  7 +++--
 2 files changed, 32 insertions(+), 3 deletions(-)
 create mode 100644 targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/sleep.c

diff --git a/targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/sleep.c b/targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/sleep.c
new file mode 100644
index 0000000000..77830ed11a
--- /dev/null
+++ b/targets/TARGET_Ambiq_Micro/TARGET_Apollo3/device/sleep.c
@@ -0,0 +1,28 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2018 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 "sleep_api.h"
+#include "am_hal_sysctrl.h"
+
+void hal_sleep(void)
+{
+  am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_NORMAL);
+}
+
+void hal_deepsleep(void)
+{
+  am_hal_sysctrl_sleep(AM_HAL_SYSCTRL_SLEEP_DEEP);
+}
diff --git a/targets/targets.json b/targets/targets.json
index 2bb0dee4d7..b522dc283b 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -7167,7 +7167,7 @@
         "features": ["BLE"],
         "default_toolchain": "GCC_ARM",
         "supported_toolchains": [
-            "GCC_ARM", 
+            "GCC_ARM",
             "ARMC6"
         ],
         "public": false,
@@ -7185,7 +7185,8 @@
             "STDIO_MESSAGES",
             "FLASH",
             "SPI",
-            "I2C"
+            "I2C",
+            "SLEEP"
         ],
         "components": [
             "FLASHIAP"
@@ -7218,7 +7219,7 @@
     },
     "SFE_ARTEMIS_THING_PLUS": {
         "inherits": ["AMA3B1KK"]
-    },   
+    },
     "SFE_EDGE": {
         "inherits": ["AMA3B1KK"],
         "components_add": ["lis2dh12", "hm01b0"]