117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
/*
|
|
* This file is part of the Micro Python project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
// these states correspond to values from query_irq, enable_irq and disable_irq
|
|
#define IRQ_STATE_DISABLED (0x00000001)
|
|
#define IRQ_STATE_ENABLED (0x00000000)
|
|
|
|
static inline mp_uint_t query_irq(void) {
|
|
return __get_PRIMASK();
|
|
}
|
|
|
|
// enable_irq and disable_irq are defined inline in mpconfigport.h
|
|
|
|
MP_DECLARE_CONST_FUN_OBJ(pyb_wfi_obj);
|
|
MP_DECLARE_CONST_FUN_OBJ(pyb_disable_irq_obj);
|
|
MP_DECLARE_CONST_FUN_OBJ(pyb_enable_irq_obj);
|
|
|
|
// IRQ priority definitions.
|
|
//
|
|
// Lower number implies higher interrupt priority.
|
|
//
|
|
// The default priority grouping is set to NVIC_PRIORITYGROUP_4 in the
|
|
// HAL_Init function. This corresponds to 4 bits for the priority field
|
|
// and 0 bits for the sub-priority field (which means that for all intensive
|
|
// purposes that the sub-priorities below are ignored).
|
|
//
|
|
// While a given interrupt is being processed, only higher priority (lower number)
|
|
// interrupts will preempt a given interrupt. If sub-priorities are active
|
|
// then the sub-priority determines the order that pending interrupts of
|
|
// a given priority are executed. This is only meaningful if 2 or more
|
|
// interrupts of the same priority are pending at the same time.
|
|
//
|
|
// The priority of the SysTick timer is determined from the TICK_INT_PRIORITY
|
|
// value which is normally set to 0 in the stm32f4xx_hal_conf.h file.
|
|
//
|
|
// The following interrupts are arranged from highest priority to lowest
|
|
// priority to make it a bit easier to figure out.
|
|
|
|
// Priority Sub-Priority
|
|
// -------- ------------
|
|
//#def IRQ_PRI_SYSTICK 0
|
|
//#def IRQ_SUBPRI_SYSTICK 0
|
|
|
|
// The UARTs have no FIFOs, so if they don't get serviced quickly then characters
|
|
// get dropped. The handling for each character only consumes about 0.5 usec
|
|
#define IRQ_PRI_UART 1
|
|
#define IRQ_SUBPRI_UART 0
|
|
|
|
// Flash IRQ must be higher priority than interrupts of all those components
|
|
// that rely on the flash storage.
|
|
#define IRQ_PRI_FLASH 2
|
|
#define IRQ_SUBPRI_FLASH 0
|
|
|
|
// SDIO must be higher priority than DMA for SDIO DMA transfers to work.
|
|
#define IRQ_PRI_SDIO 4
|
|
#define IRQ_SUBPRI_SDIO 0
|
|
|
|
// DMA should be higher priority than USB, since USB Mass Storage calls
|
|
// into the sdcard driver which waits for the DMA to complete.
|
|
#define IRQ_PRI_DMA 5
|
|
#define IRQ_SUBPRI_DMA 0
|
|
|
|
#define IRQ_PRI_OTG_FS 6
|
|
#define IRQ_SUBPRI_OTG_FS 0
|
|
|
|
#define IRQ_PRI_OTG_HS 6
|
|
#define IRQ_SUBPRI_OTG_HS 0
|
|
|
|
#define IRQ_PRI_TIM3 6
|
|
#define IRQ_SUBPRI_TIM3 0
|
|
|
|
#define IRQ_PRI_TIM5 6
|
|
#define IRQ_SUBPRI_TIM5 0
|
|
|
|
#define IRQ_PRI_CAN 7
|
|
#define IRQ_SUBPRI_CAN 0
|
|
|
|
// Interrupt priority for non-special timers.
|
|
#define IRQ_PRI_TIMX 14
|
|
#define IRQ_SUBPRI_TIMX 0
|
|
|
|
#define IRQ_PRI_EXTINT 15
|
|
#define IRQ_SUBPRI_EXTINT 0
|
|
|
|
// PENDSV should be at the lowst priority so that other interrupts complete
|
|
// before exception is raised.
|
|
#define IRQ_PRI_PENDSV 15
|
|
#define IRQ_SUBPRI_PENDSV 0
|
|
|
|
#define IRQ_PRI_RTC_WKUP 15
|
|
#define IRQ_SUBPRI_RTC_WKUP 0
|
|
|
|
|