Diff: mbed/wait_api.h

Revision:

0:ad97421fb1fb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed/wait_api.h	Wed Apr 13 22:04:54 2016 +0000
@@ -0,0 +1,94 @@
+/* Title: wait
+ * Generic wait functions.
+ *
+ * These provide simple NOP type wait capabilities.
+ *
+ * Example:
+ * > #include "mbed.h"
+ * >
+ * > DigitalOut heartbeat(LED1);
+ * >
+ * > int main() {
+ * >     while (1) {
+ * >         heartbeat = 1;
+ * >         wait(0.5);
+ * >         heartbeat = 0;
+ * >         wait(0.5);
+ * >     }
+ * > }
+ */
+
+/* mbed Microcontroller Library - wait_api
+ * Copyright (c) 2009 ARM Limited. All rights reserved.
+ */ 
+ 
+#ifndef MBED_WAIT_API_H
+#define MBED_WAIT_API_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Function: wait
+ *  Waits for a number of seconds, with microsecond resolution (within
+ *  the accuracy of single precision floating point).
+ *
+ * Variables:
+ *  s - number of seconds to wait
+ */
+void wait(float s);
+
+/* Function: wait_ms
+ *  Waits a number of milliseconds.
+ *
+ * Variables:
+ *  ms - the whole number of milliseconds to wait
+ */
+void wait_ms(int ms);
+
+/* Function: wait_us
+ *  Waits a number of microseconds.
+ *
+ * Variables:
+ *  us - the whole number of microseconds to wait
+ */
+void wait_us(int us);
+
+#ifdef TARGET_LPC11U24
+/* Function: sleep
+ *  Send the microcontroller to sleep
+ * 
+ * The processor is setup ready for sleep, and sent to sleep using __WFI(). In this mode, the
+ * system clock to the core is stopped until a reset or an interrupt occurs. This eliminates 
+ * dynamic power used by the processor, memory systems and buses. The processor, peripheral and 
+ * memory state are maintained, and the peripherals continue to work and can generate interrupts.
+ * 
+ * The processor can be woken up by any internal peripheral interrupt or external pin interrupt.
+ * 
+ * Note: The mbed interface semihosting is disconnected as part of going to sleep, and can not be restored. 
+ * Flash re-programming and the USB serial port will remain active, but the mbed program will no longer be
+ * able to access the LocalFileSystem
+ */
+void sleep(void);
+
+/* Function: deepsleep
+ *  Send the microcontroller to deep sleep
+ * 
+ * This processor is setup ready for deep sleep, and sent to sleep using __WFI(). This mode
+ * has the same sleep features as sleep plus it powers down peripherals and clocks. All state
+ * is still maintained. 
+ * 
+ * The processor can only be woken up by an external interrupt on a pin or a watchdog timer.
+ * 
+ * Note: The mbed interface semihosting is disconnected as part of going to sleep, and can not be restored. 
+ * Flash re-programming and the USB serial port will remain active, but the mbed program will no longer be
+ * able to access the LocalFileSystem
+ */
+void deepsleep(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif