Import Mbed OS hard-float snapshot

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/api/sleep.c

@@ -0,0 +1,66 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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 "cmsis.h"
+#include "fsl_smc.h"
+#include "fsl_clock_config.h"
+
+extern bool serial_check_tx_ongoing();
+
+void hal_sleep(void)
+{
+    SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
+
+    SMC_SetPowerModeWait(SMC);
+}
+
+void hal_deepsleep(void)
+{
+#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
+#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
+    smc_power_state_t original_power_state;
+
+    original_power_state = SMC_GetPowerModeState(SMC);
+#endif // FSL_FEATURE_MCG_HAS_PLL
+#endif // FSL_FEATURE_SOC_MCG_COUNT
+
+    /* Check if any of the UART's is transmitting data */
+    if (serial_check_tx_ongoing()) {
+        return;
+    }
+
+    SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
+
+    SMC_PreEnterStopModes();
+    SMC_SetPowerModeVlps(SMC);
+    SMC_PostExitStopModes();
+
+#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
+#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
+    /*
+     * If enter stop modes when MCG in PEE mode, then after wakeup, the MCG is in PBE mode,
+     * need to enter PEE mode manually.
+     */
+    if (original_power_state == kSMC_PowerStateRun) {
+        /* Wait for PLL lock. */
+        while (!(kMCG_Pll0LockFlag & CLOCK_GetStatusFlags()))
+        {
+        }
+        CLOCK_SetPeeMode();
+    }
+#endif // FSL_FEATURE_MCG_HAS_PLL
+#endif // FSL_FEATURE_SOC_MCG_COUNT
+}