前言

TC397 的 EB Mcal 配置与测试, 有DIO STM UART CAN FlsLoader CRC, 本篇是 MCAL STM, 照本文描述可复现工程, 故不再提供源码,
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MCAL STM

本篇目的在于配置和单独测试 Mcal 的 Stm. 最终效果是配置了stm0定时器的两个中断, 一个1ms中断, 一个1s中断, 并且给出了一个简单的task调度实现.

硬件连接

• MCU: TC397XP, 外部晶振20MHz
• LED0: P21_0, 低电平点亮

软件环境

• Mcal: 对应 Autosar CP 4.2.2
• 配置软件: EB tresos 23.0.0
• IDE: AURIX™ Development Studio V1.9.4(仅用于学习交流, 以下简称ads)

如何新建工程可参考上篇 MCAL DIO, 本篇主要贴出Stm的EB配置和用户代码.

EB配置

ResourceM

配置多核支持

Mcu

McuClockSettingConfig_0里面默认的McuSTMFrequency时钟100MHz无需修改, 接下来把两个比较器给STM

Stm

Irq

配置stm0的两个中断的中断优先级(0~255, 数字越大, 优先级越高, 0表示禁止中断)

验证生成代码即可

Mcal Stm 拷贝

App代码

Irq

#include"Stm.h"#include"Irq.h"#include"Mcu_17_TimerIp.h"IFX_INTERRUPT(STM0SR0_ISR,0,IRQ_STM0_SR0_PRIO){ENABLE();Mcu_17_Stm_CompareMatchIsr(STM_0,0);*(volatileuint32*)0xF0001040=0x01;/* clear interrupt iscr */}IFX_INTERRUPT(STM0SR1_ISR,0,IRQ_STM0_SR1_PRIO){ENABLE();Mcu_17_Stm_CompareMatchIsr(STM_0,1);}

Stm

#include"IfxSrc_reg.h"voidstm_callback0(void){}voidstm_callback1(void){Dio_FlipChannel(DioConf_DioChannel_LED0);}voidapp_stm_init(floatperiod0,floatperiod1){Stm_EnableModule(STM_0);IrqStm_Init();SRC_STM0SR0.B.SRE=1U;SRC_STM0SR1.B.SRE=1U;uint32 tick=(uint32)(Ifx_Ssw_getStmFrequency()*period0);Stm_EnableAlarm(STM_0,0,1,tick,stm_callback0);tick=(uint32)(Ifx_Ssw_getStmFrequency()*period1);Stm_EnableAlarm(STM_0,1,1,tick,stm_callback1);}

core0_main

voidcore0_main(void){volatileunsignedshortLoopFlag=1U;unsignedshortcpuWdtPassword;unsignedshortsafetyWdtPassword;ENABLE();cpuWdtPassword=Ifx_Ssw_getCpuWatchdogPassword(&MODULE_SCU.WDTCPU[0]);safetyWdtPassword=Ifx_Ssw_getSafetyWatchdogPassword();Ifx_Ssw_disableCpuWatchdog(&MODULE_SCU.WDTCPU[0],cpuWdtPassword);Ifx_Ssw_disableSafetyWatchdog(safetyWdtPassword);app_mcu_init();app_port_init();app_stm_init(0.001,1);while(LoopFlag==1U){}}

编译下载运行, LED0每秒翻转一次. 说明 1s 一次的stm_callback1被调用了.

Task代码

可以用1ms中断的stm_callback0实现一个简单的task

volatileunsignedintstm_count0=0;voidstm_callback0(void){stm_count0++;}voidstm_callback1(void){}structnanotask{void(*func)(void);unsignedintperiod;// msunsignedintnext;// ms};voidnanotask0(void){Dio_FlipChannel(DioConf_DioChannel_LED0);}voidnanotask1(void){}structnanotasknanotasks[]={{nanotask0,1000,0},{nanotask1,2000,0},};voidnanotask_init(void){for(inti=0;i<sizeof(nanotasks)/sizeof(nanotasks[0]);i++){nanotasks[i].next=nanotasks[i].period;}}voidnanotask_runone(void){for(inti=0;i<sizeof(nanotasks)/sizeof(nanotasks[0]);i++){if(nanotasks[i].next==0){nanotasks[i].func();nanotasks[i].next=nanotasks[i].period;}else{nanotasks[i].next--;}}}voidcore0_main(void){...app_mcu_init();app_port_init();app_stm_init(0.001,1);nanotask_init();while(LoopFlag==1U){if(stm_count0>0){stm_count0=0;nanotask_runone();}}}