mbed official
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Superseded
This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_Atmel/common/utils/interrupt/interrupt_sam_nvic.c@579:53297373a894, 2015-07-01 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jul 01 09:45:11 2015 +0100
- Revision:
- 579:53297373a894
- Child:
- 592:a274ee790e56
Synchronized with git revision d5b4d2ab9c47edb4dc5776e7177b0c2263459081
Full URL: https://github.com/mbedmicro/mbed/commit/d5b4d2ab9c47edb4dc5776e7177b0c2263459081/
Initial version of drivers for SAMR21
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 579:53297373a894 | 1 | /** |
| mbed_official | 579:53297373a894 | 2 | * \file |
| mbed_official | 579:53297373a894 | 3 | * |
| mbed_official | 579:53297373a894 | 4 | * \brief Global interrupt management for SAM D20, SAM3 and SAM4 (NVIC based) |
| mbed_official | 579:53297373a894 | 5 | * |
| mbed_official | 579:53297373a894 | 6 | * Copyright (c) 2012-2014 Atmel Corporation. All rights reserved. |
| mbed_official | 579:53297373a894 | 7 | * |
| mbed_official | 579:53297373a894 | 8 | * \asf_license_start |
| mbed_official | 579:53297373a894 | 9 | * |
| mbed_official | 579:53297373a894 | 10 | * \page License |
| mbed_official | 579:53297373a894 | 11 | * |
| mbed_official | 579:53297373a894 | 12 | * Redistribution and use in source and binary forms, with or without |
| mbed_official | 579:53297373a894 | 13 | * modification, are permitted provided that the following conditions are met: |
| mbed_official | 579:53297373a894 | 14 | * |
| mbed_official | 579:53297373a894 | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 579:53297373a894 | 16 | * this list of conditions and the following disclaimer. |
| mbed_official | 579:53297373a894 | 17 | * |
| mbed_official | 579:53297373a894 | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 579:53297373a894 | 19 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 579:53297373a894 | 20 | * and/or other materials provided with the distribution. |
| mbed_official | 579:53297373a894 | 21 | * |
| mbed_official | 579:53297373a894 | 22 | * 3. The name of Atmel may not be used to endorse or promote products derived |
| mbed_official | 579:53297373a894 | 23 | * from this software without specific prior written permission. |
| mbed_official | 579:53297373a894 | 24 | * |
| mbed_official | 579:53297373a894 | 25 | * 4. This software may only be redistributed and used in connection with an |
| mbed_official | 579:53297373a894 | 26 | * Atmel microcontroller product. |
| mbed_official | 579:53297373a894 | 27 | * |
| mbed_official | 579:53297373a894 | 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED |
| mbed_official | 579:53297373a894 | 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| mbed_official | 579:53297373a894 | 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| mbed_official | 579:53297373a894 | 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR |
| mbed_official | 579:53297373a894 | 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 579:53297373a894 | 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| mbed_official | 579:53297373a894 | 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| mbed_official | 579:53297373a894 | 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| mbed_official | 579:53297373a894 | 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| mbed_official | 579:53297373a894 | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| mbed_official | 579:53297373a894 | 38 | * POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 579:53297373a894 | 39 | * |
| mbed_official | 579:53297373a894 | 40 | * \asf_license_stop |
| mbed_official | 579:53297373a894 | 41 | * |
| mbed_official | 579:53297373a894 | 42 | */ |
| mbed_official | 579:53297373a894 | 43 | /** |
| mbed_official | 579:53297373a894 | 44 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 579:53297373a894 | 45 | */ |
| mbed_official | 579:53297373a894 | 46 | |
| mbed_official | 579:53297373a894 | 47 | #include "interrupt_sam_nvic.h" |
| mbed_official | 579:53297373a894 | 48 | |
| mbed_official | 579:53297373a894 | 49 | #if !defined(__DOXYGEN__) |
| mbed_official | 579:53297373a894 | 50 | /* Deprecated - global flag to determine the global interrupt state. Required by |
| mbed_official | 579:53297373a894 | 51 | * QTouch library, however new applications should use cpu_irq_is_enabled() |
| mbed_official | 579:53297373a894 | 52 | * which probes the true global interrupt state from the CPU special registers. |
| mbed_official | 579:53297373a894 | 53 | */ |
| mbed_official | 579:53297373a894 | 54 | volatile bool g_interrupt_enabled = true; |
| mbed_official | 579:53297373a894 | 55 | #endif |
| mbed_official | 579:53297373a894 | 56 | |
| mbed_official | 579:53297373a894 | 57 | void cpu_irq_enter_critical(void) |
| mbed_official | 579:53297373a894 | 58 | { |
| mbed_official | 579:53297373a894 | 59 | if (cpu_irq_critical_section_counter == 0) { |
| mbed_official | 579:53297373a894 | 60 | if (cpu_irq_is_enabled()) { |
| mbed_official | 579:53297373a894 | 61 | cpu_irq_disable(); |
| mbed_official | 579:53297373a894 | 62 | cpu_irq_prev_interrupt_state = true; |
| mbed_official | 579:53297373a894 | 63 | } else { |
| mbed_official | 579:53297373a894 | 64 | /* Make sure the to save the prev state as false */ |
| mbed_official | 579:53297373a894 | 65 | cpu_irq_prev_interrupt_state = false; |
| mbed_official | 579:53297373a894 | 66 | } |
| mbed_official | 579:53297373a894 | 67 | |
| mbed_official | 579:53297373a894 | 68 | } |
| mbed_official | 579:53297373a894 | 69 | |
| mbed_official | 579:53297373a894 | 70 | cpu_irq_critical_section_counter++; |
| mbed_official | 579:53297373a894 | 71 | } |
| mbed_official | 579:53297373a894 | 72 | |
| mbed_official | 579:53297373a894 | 73 | void cpu_irq_leave_critical(void) |
| mbed_official | 579:53297373a894 | 74 | { |
| mbed_official | 579:53297373a894 | 75 | /* Check if the user is trying to leave a critical section when not in a critical section */ |
| mbed_official | 579:53297373a894 | 76 | Assert(cpu_irq_critical_section_counter > 0); |
| mbed_official | 579:53297373a894 | 77 | |
| mbed_official | 579:53297373a894 | 78 | cpu_irq_critical_section_counter--; |
| mbed_official | 579:53297373a894 | 79 | |
| mbed_official | 579:53297373a894 | 80 | /* Only enable global interrupts when the counter reaches 0 and the state of the global interrupt flag |
| mbed_official | 579:53297373a894 | 81 | was enabled when entering critical state */ |
| mbed_official | 579:53297373a894 | 82 | if ((cpu_irq_critical_section_counter == 0) && (cpu_irq_prev_interrupt_state)) { |
| mbed_official | 579:53297373a894 | 83 | cpu_irq_enable(); |
| mbed_official | 579:53297373a894 | 84 | } |
| mbed_official | 579:53297373a894 | 85 | } |
| mbed_official | 579:53297373a894 | 86 |
