嵌入式 STM32触发PendSV中断 发表于 2018-10-12 浏览量 144711 没有评论 1. 设置PendSV优先级 ![PendSV.png][1] NVIC_SYSPRI14 EQU 0xE000ED22 NVIC_PENDSV_PRI EQU 0xFF LDR R0, =NVIC_SYSPRI14 LDR R1, =NVIC_PENDSV_PRI STRB R1, [R0] <!--more--> 1. 触发PendSV异常 ![PendSV_2.png][2] 往ICSR第28位写1，即可将PendSV异常挂起。若是当前没有高优先级中断产生，那么程序将会进入PendSV handler NVIC_INT_CTRL EQU 0xE000ED04 NVIC_PENDSVSET EQU 0x10000000 LDR R0, =NVIC_INT_CTRL LDR R1, =NVIC_PENDSVSET STR R1, [R0] /** * @file pendSV.c * @author tymaker * @version V1.0.0 * @date 2018-10-13 2018 * @brief GUI TrackBar module */ /* Includes ------------------------------------------------------------------*/ /********************************End of File************************************/ #include "pendSV.h" __asm void SetPendSV(void) { NVIC_SYSPRI14 EQU 0xE000ED22 NVIC_PENDSV_PRI EQU 0xFF LDR R1, =NVIC_PENDSV_PRI LDR R0, =NVIC_SYSPRI14 STRB R1, [R0] BX LR NOP } __asm void TriggerPendSV(void) { NVIC_INT_CTRL EQU 0xE000ED04 NVIC_PENDSVSET EQU 0x10000000 LDR R0, = NVIC_INT_CTRL LDR R1, =NVIC_PENDSVSET STR R1, [R0] BX LR NOP } /** * @file pendSV.h * @author tymaker * @version V1.0.0 * @date 2018-10-13 2018 * @brief GUI TrackBar module */ /* Includes ------------------------------------------------------------------*/ #ifndef __PEND_S_V_H_ #define __PEND_S_V_H_ #include <stdio.h> #include "stm32f10x_conf.h" __asm void SetPendSV(void); __asm void TriggerPendSV(void); #endif /********************************End of File************************************/ [1]: https://www.goduino.cc/usr/uploads/2018/10/1911553978.png [2]: https://www.goduino.cc/usr/uploads/2018/10/4177529891.png os