diff options
Diffstat (limited to 'Sensor Watch Starter Project/hal/src/hal_atomic.c')
-rw-r--r-- | Sensor Watch Starter Project/hal/src/hal_atomic.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/Sensor Watch Starter Project/hal/src/hal_atomic.c b/Sensor Watch Starter Project/hal/src/hal_atomic.c new file mode 100644 index 00000000..f56418ee --- /dev/null +++ b/Sensor Watch Starter Project/hal/src/hal_atomic.c @@ -0,0 +1,66 @@ +/** + * \file + * + * \brief Critical sections related functionality implementation. + * + * Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries. + * + * \asf_license_start + * + * \page License + * + * Subject to your compliance with these terms, you may use Microchip + * software and any derivatives exclusively with Microchip products. + * It is your responsibility to comply with third party license terms applicable + * to your use of third party software (including open source software) that + * may accompany Microchip software. + * + * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, + * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, + * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, + * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE + * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL + * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE + * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE + * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT + * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY + * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, + * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. + * + * \asf_license_stop + * + */ + +#include "hal_atomic.h" + +/** + * \brief Driver version + */ +#define DRIVER_VERSION 0x00000001u + +/** + * \brief Disable interrupts, enter critical section + */ +void atomic_enter_critical(hal_atomic_t volatile *atomic) +{ + *atomic = __get_PRIMASK(); + __disable_irq(); + __DMB(); +} + +/** + * \brief Exit atomic section + */ +void atomic_leave_critical(hal_atomic_t volatile *atomic) +{ + __DMB(); + __set_PRIMASK(*atomic); +} + +/** + * \brief Retrieve the current driver version + */ +uint32_t atomic_get_version(void) +{ + return DRIVER_VERSION; +} |