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mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/us_ticker.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
174:8bb9f3a33240
Child:
304:89b9c3a9a045
Synchronized with git revision 490d1a6606b3138f165c5edf2f2370ca616587c0



Full URL: https://github.com/mbedmicro/mbed/commit/490d1a6606b3138f165c5edf2f2370ca616587c0/



[LPC1114] Sleep fix + some device.h settings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 3 * All rights reserved.
mbed_official 76:aeb1df146756 4 *
mbed_official 76:aeb1df146756 5 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 6 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 7 *
mbed_official 76:aeb1df146756 8 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 9 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 11 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 12 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 13 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 14 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 15 * without specific prior written permission.
mbed_official 76:aeb1df146756 16 *
mbed_official 76:aeb1df146756 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 20 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 27 */
mbed_official 76:aeb1df146756 28 #include <stddef.h>
mbed_official 76:aeb1df146756 29 #include "us_ticker_api.h"
mbed_official 76:aeb1df146756 30 #include "PeripheralNames.h"
mbed_official 76:aeb1df146756 31
mbed_official 100:0412b5443284 32 // 32-bit timer selection
mbed_official 100:0412b5443284 33 #define TIM_MST TIM5
mbed_official 100:0412b5443284 34 #define TIM_MST_IRQ TIM5_IRQn
mbed_official 100:0412b5443284 35 #define TIM_MST_RCC RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE)
mbed_official 84:f54042cbc282 36
mbed_official 100:0412b5443284 37 static int us_ticker_inited = 0;
mbed_official 76:aeb1df146756 38
mbed_official 91:0a39e62a0464 39 void us_ticker_init(void) {
mbed_official 76:aeb1df146756 40 TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
mbed_official 174:8bb9f3a33240 41
mbed_official 76:aeb1df146756 42 if (us_ticker_inited) return;
mbed_official 76:aeb1df146756 43 us_ticker_inited = 1;
mbed_official 174:8bb9f3a33240 44
mbed_official 100:0412b5443284 45 // Enable timer clock
mbed_official 76:aeb1df146756 46 TIM_MST_RCC;
mbed_official 174:8bb9f3a33240 47
mbed_official 84:f54042cbc282 48 // Configure time base
mbed_official 76:aeb1df146756 49 TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
mbed_official 100:0412b5443284 50 TIM_TimeBaseStructure.TIM_Period = 0xFFFFFFFF;
mbed_official 76:aeb1df146756 51 TIM_TimeBaseStructure.TIM_Prescaler = (uint16_t)(SystemCoreClock / 1000000) - 1; // 1 µs tick
mbed_official 76:aeb1df146756 52 TIM_TimeBaseStructure.TIM_ClockDivision = 0;
mbed_official 76:aeb1df146756 53 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
mbed_official 76:aeb1df146756 54 TIM_TimeBaseInit(TIM_MST, &TIM_TimeBaseStructure);
mbed_official 174:8bb9f3a33240 55
mbed_official 100:0412b5443284 56 NVIC_SetVector(TIM_MST_IRQ, (uint32_t)us_ticker_irq_handler);
mbed_official 84:f54042cbc282 57 NVIC_EnableIRQ(TIM_MST_IRQ);
mbed_official 174:8bb9f3a33240 58
mbed_official 84:f54042cbc282 59 // Enable timer
mbed_official 76:aeb1df146756 60 TIM_Cmd(TIM_MST, ENABLE);
mbed_official 76:aeb1df146756 61 }
mbed_official 76:aeb1df146756 62
mbed_official 76:aeb1df146756 63 uint32_t us_ticker_read() {
mbed_official 76:aeb1df146756 64 if (!us_ticker_inited) us_ticker_init();
mbed_official 100:0412b5443284 65 return TIM_MST->CNT;
mbed_official 76:aeb1df146756 66 }
mbed_official 76:aeb1df146756 67
mbed_official 76:aeb1df146756 68 void us_ticker_set_interrupt(unsigned int timestamp) {
mbed_official 100:0412b5443284 69 // Set new output compare value
mbed_official 100:0412b5443284 70 TIM_SetCompare1(TIM_MST, timestamp);
mbed_official 100:0412b5443284 71 // Enable IT
mbed_official 100:0412b5443284 72 TIM_ITConfig(TIM_MST, TIM_IT_CC1, ENABLE);
mbed_official 76:aeb1df146756 73 }
mbed_official 76:aeb1df146756 74
mbed_official 76:aeb1df146756 75 void us_ticker_disable_interrupt(void) {
mbed_official 76:aeb1df146756 76 TIM_ITConfig(TIM_MST, TIM_IT_CC1, DISABLE);
mbed_official 76:aeb1df146756 77 }
mbed_official 76:aeb1df146756 78
mbed_official 76:aeb1df146756 79 void us_ticker_clear_interrupt(void) {
mbed_official 100:0412b5443284 80 TIM_ClearITPendingBit(TIM_MST, TIM_IT_CC1);
mbed_official 76:aeb1df146756 81 }