Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

hal/us_ticker_api.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) 2006-2015 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 #ifndef MBED_US_TICKER_API_H
<> 144:ef7eb2e8f9f7 17 #define MBED_US_TICKER_API_H
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #include <stdint.h>
<> 144:ef7eb2e8f9f7 20 #include "ticker_api.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 23 extern "C" {
<> 144:ef7eb2e8f9f7 24 #endif
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 /**
<> 144:ef7eb2e8f9f7 27 * \defgroup hal_UsTicker Microseconds Ticker Functions
<> 144:ef7eb2e8f9f7 28 * @{
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 /** Get ticker's data
<> 144:ef7eb2e8f9f7 32 *
<> 144:ef7eb2e8f9f7 33 * @return The low power ticker data
<> 144:ef7eb2e8f9f7 34 */
<> 144:ef7eb2e8f9f7 35 const ticker_data_t* get_us_ticker_data(void);
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 /** The wrapper for ticker_irq_handler, to pass us ticker's data
<> 144:ef7eb2e8f9f7 39 *
<> 144:ef7eb2e8f9f7 40 */
<> 144:ef7eb2e8f9f7 41 void us_ticker_irq_handler(void);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /* HAL us ticker */
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 /** Initialize the ticker
<> 144:ef7eb2e8f9f7 46 *
<> 144:ef7eb2e8f9f7 47 */
<> 144:ef7eb2e8f9f7 48 void us_ticker_init(void);
<> 144:ef7eb2e8f9f7 49
<> 144:ef7eb2e8f9f7 50 /** Read the current counter
<> 144:ef7eb2e8f9f7 51 *
<> 144:ef7eb2e8f9f7 52 * @return The current timer's counter value in microseconds
<> 144:ef7eb2e8f9f7 53 */
<> 144:ef7eb2e8f9f7 54 uint32_t us_ticker_read(void);
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 /** Set interrupt for specified timestamp
<> 144:ef7eb2e8f9f7 57 *
<> 144:ef7eb2e8f9f7 58 * @param timestamp The time in microseconds to be set
<> 144:ef7eb2e8f9f7 59 */
<> 144:ef7eb2e8f9f7 60 void us_ticker_set_interrupt(timestamp_t timestamp);
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 /** Disable us ticker interrupt
<> 144:ef7eb2e8f9f7 63 *
<> 144:ef7eb2e8f9f7 64 */
<> 144:ef7eb2e8f9f7 65 void us_ticker_disable_interrupt(void);
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 /** Clear us ticker interrupt
<> 144:ef7eb2e8f9f7 68 *
<> 144:ef7eb2e8f9f7 69 */
<> 144:ef7eb2e8f9f7 70 void us_ticker_clear_interrupt(void);
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 /**@}*/
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 75 }
<> 144:ef7eb2e8f9f7 76 #endif
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 #endif