Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

api/rtc_time.h@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16
<> 144:ef7eb2e8f9f7 17 #include <time.h>
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 20 extern "C" {
<> 144:ef7eb2e8f9f7 21 #endif
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 /** Implementation of the C time.h functions
<> 144:ef7eb2e8f9f7 24 *
<> 144:ef7eb2e8f9f7 25 * Provides mechanisms to set and read the current time, based
<> 144:ef7eb2e8f9f7 26 * on the microcontroller Real-Time Clock (RTC), plus some
<> 144:ef7eb2e8f9f7 27 * standard C manipulation and formating functions.
<> 144:ef7eb2e8f9f7 28 *
<> 144:ef7eb2e8f9f7 29 * Example:
<> 144:ef7eb2e8f9f7 30 * @code
<> 144:ef7eb2e8f9f7 31 * #include "mbed.h"
<> 144:ef7eb2e8f9f7 32 *
<> 144:ef7eb2e8f9f7 33 * int main() {
<> 144:ef7eb2e8f9f7 34 * set_time(1256729737); // Set RTC time to Wed, 28 Oct 2009 11:35:37
<> 144:ef7eb2e8f9f7 35 *
<> 144:ef7eb2e8f9f7 36 * while(1) {
<> 144:ef7eb2e8f9f7 37 * time_t seconds = time(NULL);
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 * printf("Time as seconds since January 1, 1970 = %d\n", seconds);
<> 144:ef7eb2e8f9f7 40 *
<> 144:ef7eb2e8f9f7 41 * printf("Time as a basic string = %s", ctime(&seconds));
<> 144:ef7eb2e8f9f7 42 *
<> 144:ef7eb2e8f9f7 43 * char buffer[32];
<> 144:ef7eb2e8f9f7 44 * strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
<> 144:ef7eb2e8f9f7 45 * printf("Time as a custom formatted string = %s", buffer);
<> 144:ef7eb2e8f9f7 46 *
<> 144:ef7eb2e8f9f7 47 * wait(1);
<> 144:ef7eb2e8f9f7 48 * }
<> 144:ef7eb2e8f9f7 49 * }
<> 144:ef7eb2e8f9f7 50 * @endcode
<> 144:ef7eb2e8f9f7 51 */
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 /** Set the current time
<> 144:ef7eb2e8f9f7 54 *
<> 144:ef7eb2e8f9f7 55 * Initialises and sets the time of the microcontroller Real-Time Clock (RTC)
<> 144:ef7eb2e8f9f7 56 * to the time represented by the number of seconds since January 1, 1970
<> 144:ef7eb2e8f9f7 57 * (the UNIX timestamp).
<> 144:ef7eb2e8f9f7 58 *
<> 144:ef7eb2e8f9f7 59 * @param t Number of seconds since January 1, 1970 (the UNIX timestamp)
<> 144:ef7eb2e8f9f7 60 *
<> 144:ef7eb2e8f9f7 61 * @Note Synchronization level: Thread safe
<> 144:ef7eb2e8f9f7 62 *
<> 144:ef7eb2e8f9f7 63 * Example:
<> 144:ef7eb2e8f9f7 64 * @code
<> 144:ef7eb2e8f9f7 65 * #include "mbed.h"
<> 144:ef7eb2e8f9f7 66 *
<> 144:ef7eb2e8f9f7 67 * int main() {
<> 144:ef7eb2e8f9f7 68 * set_time(1256729737); // Set time to Wed, 28 Oct 2009 11:35:37
<> 144:ef7eb2e8f9f7 69 * }
<> 144:ef7eb2e8f9f7 70 * @endcode
<> 144:ef7eb2e8f9f7 71 */
<> 144:ef7eb2e8f9f7 72 void set_time(time_t t);
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 /** Attach an external RTC to be used for the C time functions
<> 144:ef7eb2e8f9f7 75 *
<> 144:ef7eb2e8f9f7 76 * @Note Synchronization level: Thread safe
<> 144:ef7eb2e8f9f7 77 *
<> 144:ef7eb2e8f9f7 78 * @param read_rtc pointer to function which returns current UNIX timestamp
<> 144:ef7eb2e8f9f7 79 * @param write_rtc pointer to function which sets current UNIX timestamp, can be NULL
<> 144:ef7eb2e8f9f7 80 * @param init_rtc pointer to funtion which initializes RTC, can be NULL
<> 144:ef7eb2e8f9f7 81 * @param isenabled_rtc pointer to function wich returns if the rtc is enabled, can be NULL
<> 144:ef7eb2e8f9f7 82 */
<> 144:ef7eb2e8f9f7 83 void attach_rtc(time_t (*read_rtc)(void), void (*write_rtc)(time_t), void (*init_rtc)(void), int (*isenabled_rtc)(void));
<> 144:ef7eb2e8f9f7 84
<> 144:ef7eb2e8f9f7 85 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 86 }
<> 144:ef7eb2e8f9f7 87 #endif