Diff: targets/TARGET_TOSHIBA/TARGET_TMPM46B/sleep.c

Revision:

184:08ed48f1de7f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_TOSHIBA/TARGET_TMPM46B/sleep.c	Thu Apr 19 17:12:19 2018 +0100
@@ -0,0 +1,66 @@
+/* mbed Microcontroller Library
+ * (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2017 All rights reserved
+ *
+ * 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"
+
+// Number of warm-up cycle = warm-up time to set / input frequency cycle (s)
+// Number of 3*10^-6 (s) / (1/12 (MHz)) = 60000 = 0xea60
+#define CG_WUODR_INT     ((uint16_t)0xea60)
+
+static void external_losc_enable(void);
+
+void hal_sleep(void)
+{
+    // Set low power consumption mode IDLE
+    CG_SetSTBYMode(CG_STBY_MODE_IDLE);
+    // Enter idle mode
+    __WFI();
+}
+
+void hal_deepsleep(void)
+{
+    // Set low power consumption mode STOP1
+    CG_SetSTBYMode(CG_STBY_MODE_STOP1);
+    // Setup warm up time
+    CG_SetWarmUpTime(CG_WARM_UP_SRC_OSC_EXT_HIGH, CG_WUODR_INT);
+    // Enter stop1 mode
+    __WFI();
+    // Switch over from IHOSC to EHOSC
+    external_losc_enable();
+}
+
+static void external_losc_enable(void)
+{
+    // Enable high-speed oscillator
+    CG_SetFosc(CG_FOSC_OSC_EXT, ENABLE);
+    // Select internal(fIHOSC) as warm-up clock
+    CG_SetWarmUpTime(CG_WARM_UP_SRC_OSC_INT_HIGH, CG_WUODR_INT);
+    // Start warm-up
+    CG_StartWarmUp();
+    // Wait until EHOSC become stable
+    while (CG_GetWarmUpState() != DONE) {
+        // Do nothing
+    }
+
+    // Set fosc source
+    CG_SetFoscSrc(CG_FOSC_OSC_EXT);
+    // Wait for <OSCSEL> to become "1"
+    while (CG_GetFoscSrc() != CG_FOSC_OSC_EXT) {
+        // Do nothing
+    }
+
+    // Stop IHOSC
+    CG_SetFosc(CG_FOSC_OSC_INT, DISABLE);
+}