Jing Qiu / mbed

nothing changed

Fork of mbed by gokmen ascioglu

wait_api.h@1:27d81db81dd7, 2015-03-03 (annotated)

Committer:
Jing_Qiu
Date:
Tue Mar 03 00:55:57 2015 +0000
Revision:
1:27d81db81dd7
Parent:
0:a8fa94490a0a 
revise

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gokmenascioglu 0:a8fa94490a0a 1 /* Title: wait
gokmenascioglu 0:a8fa94490a0a 2 * Generic wait functions.
gokmenascioglu 0:a8fa94490a0a 3 *
gokmenascioglu 0:a8fa94490a0a 4 * These provide simple NOP type wait capabilities.
gokmenascioglu 0:a8fa94490a0a 5 *
gokmenascioglu 0:a8fa94490a0a 6 * Example:
gokmenascioglu 0:a8fa94490a0a 7 * > #include "mbed.h"
gokmenascioglu 0:a8fa94490a0a 8 * >
gokmenascioglu 0:a8fa94490a0a 9 * > DigitalOut heartbeat(LED1);
gokmenascioglu 0:a8fa94490a0a 10 * >
gokmenascioglu 0:a8fa94490a0a 11 * > int main() {
gokmenascioglu 0:a8fa94490a0a 12 * > while (1) {
gokmenascioglu 0:a8fa94490a0a 13 * > heartbeat = 1;
gokmenascioglu 0:a8fa94490a0a 14 * > wait(0.5);
gokmenascioglu 0:a8fa94490a0a 15 * > heartbeat = 0;
gokmenascioglu 0:a8fa94490a0a 16 * > wait(0.5);
gokmenascioglu 0:a8fa94490a0a 17 * > }
gokmenascioglu 0:a8fa94490a0a 18 * > }
gokmenascioglu 0:a8fa94490a0a 19 */
gokmenascioglu 0:a8fa94490a0a 20
gokmenascioglu 0:a8fa94490a0a 21 /* mbed Microcontroller Library - wait_api
gokmenascioglu 0:a8fa94490a0a 22 * Copyright (c) 2009 ARM Limited. All rights reserved.
gokmenascioglu 0:a8fa94490a0a 23 */
gokmenascioglu 0:a8fa94490a0a 24
gokmenascioglu 0:a8fa94490a0a 25 #ifndef MBED_WAIT_API_H
gokmenascioglu 0:a8fa94490a0a 26 #define MBED_WAIT_API_H
gokmenascioglu 0:a8fa94490a0a 27
gokmenascioglu 0:a8fa94490a0a 28 #ifdef __cplusplus
gokmenascioglu 0:a8fa94490a0a 29 extern "C" {
gokmenascioglu 0:a8fa94490a0a 30 #endif
gokmenascioglu 0:a8fa94490a0a 31
gokmenascioglu 0:a8fa94490a0a 32 /* Function: wait
gokmenascioglu 0:a8fa94490a0a 33 * Waits for a number of seconds, with microsecond resolution (within
gokmenascioglu 0:a8fa94490a0a 34 * the accuracy of single precision floating point).
gokmenascioglu 0:a8fa94490a0a 35 *
gokmenascioglu 0:a8fa94490a0a 36 * Variables:
gokmenascioglu 0:a8fa94490a0a 37 * s - number of seconds to wait
gokmenascioglu 0:a8fa94490a0a 38 */
gokmenascioglu 0:a8fa94490a0a 39 void wait(float s);
gokmenascioglu 0:a8fa94490a0a 40
gokmenascioglu 0:a8fa94490a0a 41 /* Function: wait_ms
gokmenascioglu 0:a8fa94490a0a 42 * Waits a number of milliseconds.
gokmenascioglu 0:a8fa94490a0a 43 *
gokmenascioglu 0:a8fa94490a0a 44 * Variables:
gokmenascioglu 0:a8fa94490a0a 45 * ms - the whole number of milliseconds to wait
gokmenascioglu 0:a8fa94490a0a 46 */
gokmenascioglu 0:a8fa94490a0a 47 void wait_ms(int ms);
gokmenascioglu 0:a8fa94490a0a 48
gokmenascioglu 0:a8fa94490a0a 49 /* Function: wait_us
gokmenascioglu 0:a8fa94490a0a 50 * Waits a number of microseconds.
gokmenascioglu 0:a8fa94490a0a 51 *
gokmenascioglu 0:a8fa94490a0a 52 * Variables:
gokmenascioglu 0:a8fa94490a0a 53 * us - the whole number of microseconds to wait
gokmenascioglu 0:a8fa94490a0a 54 */
gokmenascioglu 0:a8fa94490a0a 55 void wait_us(int us);
gokmenascioglu 0:a8fa94490a0a 56
gokmenascioglu 0:a8fa94490a0a 57 #ifdef TARGET_LPC11U24
gokmenascioglu 0:a8fa94490a0a 58 /* Function: sleep
gokmenascioglu 0:a8fa94490a0a 59 * Send the microcontroller to sleep
gokmenascioglu 0:a8fa94490a0a 60 *
gokmenascioglu 0:a8fa94490a0a 61 * The processor is setup ready for sleep, and sent to sleep using __WFI(). In this mode, the
gokmenascioglu 0:a8fa94490a0a 62 * system clock to the core is stopped until a reset or an interrupt occurs. This eliminates
gokmenascioglu 0:a8fa94490a0a 63 * dynamic power used by the processor, memory systems and buses. The processor, peripheral and
gokmenascioglu 0:a8fa94490a0a 64 * memory state are maintained, and the peripherals continue to work and can generate interrupts.
gokmenascioglu 0:a8fa94490a0a 65 *
gokmenascioglu 0:a8fa94490a0a 66 * The processor can be woken up by any internal peripheral interrupt or external pin interrupt.
gokmenascioglu 0:a8fa94490a0a 67 *
gokmenascioglu 0:a8fa94490a0a 68 * Note: The mbed interface semihosting is disconnected as part of going to sleep, and can not be restored.
gokmenascioglu 0:a8fa94490a0a 69 * Flash re-programming and the USB serial port will remain active, but the mbed program will no longer be
gokmenascioglu 0:a8fa94490a0a 70 * able to access the LocalFileSystem
gokmenascioglu 0:a8fa94490a0a 71 */
gokmenascioglu 0:a8fa94490a0a 72 void sleep(void);
gokmenascioglu 0:a8fa94490a0a 73
gokmenascioglu 0:a8fa94490a0a 74 /* Function: deepsleep
gokmenascioglu 0:a8fa94490a0a 75 * Send the microcontroller to deep sleep
gokmenascioglu 0:a8fa94490a0a 76 *
gokmenascioglu 0:a8fa94490a0a 77 * This processor is setup ready for deep sleep, and sent to sleep using __WFI(). This mode
gokmenascioglu 0:a8fa94490a0a 78 * has the same sleep features as sleep plus it powers down peripherals and clocks. All state
gokmenascioglu 0:a8fa94490a0a 79 * is still maintained.
gokmenascioglu 0:a8fa94490a0a 80 *
gokmenascioglu 0:a8fa94490a0a 81 * The processor can only be woken up by an external interrupt on a pin or a watchdog timer.
gokmenascioglu 0:a8fa94490a0a 82 *
gokmenascioglu 0:a8fa94490a0a 83 * Note: The mbed interface semihosting is disconnected as part of going to sleep, and can not be restored.
gokmenascioglu 0:a8fa94490a0a 84 * Flash re-programming and the USB serial port will remain active, but the mbed program will no longer be
gokmenascioglu 0:a8fa94490a0a 85 * able to access the LocalFileSystem
gokmenascioglu 0:a8fa94490a0a 86 */
gokmenascioglu 0:a8fa94490a0a 87 void deepsleep(void);
gokmenascioglu 0:a8fa94490a0a 88 #endif
gokmenascioglu 0:a8fa94490a0a 89
gokmenascioglu 0:a8fa94490a0a 90 #ifdef __cplusplus
gokmenascioglu 0:a8fa94490a0a 91 }
gokmenascioglu 0:a8fa94490a0a 92 #endif
gokmenascioglu 0:a8fa94490a0a 93
gokmenascioglu 0:a8fa94490a0a 94 #endif