《tiny6410裸机程序》第九章：tiny6410按键控制蜂鸣器程序

来源：互联网发布：驾校大数据的应用编辑：程序博客网时间：2024/04/28 19:11

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还没有调通，先记录一下吧：

1.Startup.s

preserve8  IMPORT  keymain        ; 声明C程序中的Main()函数  AREA    Start,CODE,READONLY ; 声明代码段Start  ENTRY               ; 标识程序入口  CODE32              ; 声明32位ARM指令    ldr r0, =0x70000000        orr r0, r0, #0x13  mcr p15,0,r0,c15,c2,4     ;256M(0x70000 0000~0x7FFF FFFF)ARM协处理器相关 告诉协处理器外设寄存器的基地址和地址空间ldr r0, =0x7E004000  mov r1, #0  str r1, [r0]              ;关闭看门狗    ldr sp, =8*1024           ;设置C堆栈  PROCmrc p15,0,r0,c1,c0,0orr r0,r0,#(1<<24)mcr p15,0,r0,c1,c0,0  ;禁止MMU和Cachemovpc,lr   ;使能VICENDP;mrsr0,cpsr;bicr0,r0,#(1<<7);msrcpsr_cxsf,r0             ;movpc,lr  ;使能IRQbl keymain END

2.key.c

//VIC总中端控制器#define rVIC0INTENABLE (*(volatile u32 *)(0x71200000 + 0x10))#define rVIC0INTENCLEAR (*(volatile u32 *)(0x71200000 + 0x14))#define rVIC0INTSELECT (*(volatile u32 *)(0x71200000 + 0x0c))#define rVIC0ADDR (*(volatile u32 *)(0x71200000 + 0xff))#define rVIC0VECTADDR (*(volatile u32 *)(0x71200000 + 0x100))//GPIO#define rGPIOFCON (*(volatile u32 *)0x7f0080a0)  //连接蜂鸣器#define rGPIOFDAT (*(volatile u32 *)0x7f0080a4)#define rGPIONCON (*(volatile u32 *)0x7f008830)  //连接按键#define rGPIONPUD (*(volatile u32 *)0x7f008838)//外部子中断控制器#define rEINT0CON0 (*(volatile u32 *)0x7f008900)#define rEINT0MASK (*(volatile u32 *)0x7f008920)#define rEINT0PEND (*(volatile u32 *)0x7f008924)typedef unsigned long u32;void __irq Isr_Eint(void);void GPIOFinit(void);void GPIONinit(void);void GPIONinit1(void);void EINT0init(void);void ENABLEvic0(void);void EINT0mask(void);int keymain(void){    //设置GPN0(连接KEY1)引脚为外部终端模式  GPIONinit();  GPIONinit1();  //设置GPF14(连接蜂鸣器)引脚为输出模式  GPIOFinit();      //设置外部子中断控制器，即GPN0(EINT0)为低电平触发中断  EINT0init();    //解除外部子中断EINT0/GPN0的中断屏蔽  EINT0mask();          //初始化VIC总中断控制器  //rVIC0INTENCLEAR = 0xffffffff;  //rVIC0INTSELECT = 0x0;  //rVIC0ADDR = 0;  //设置总中断控制器中端服务程序入口地址  rVIC0VECTADDR = ((unsigned)Isr_Eint);  ENABLEvic0();    while(1);}void __irq Isr_Eint(void){  u32 i;  rEINT0PEND = 0x1;  //清除中断  rGPIOFDAT |= 0x1<<14;    //0000 0000 0000 0000 10000 0000 0000 0000  for(i=0;i<3000*100;i++);  rGPIOFDAT &= ~(0x1<<14);  //1111 1111 1111 1111 01111 1111 1111 1111  for(i=0;i<3000*100;i++);  rVIC0ADDR = 0x0;}void GPIOFinit(void){  u32 fConValue;  //设置GPF14(连接蜂鸣器)引脚为输出模式  fConValue = rGPIOFCON;  fConValue &= ~(0x3<<28); //1100 1111 1111 1111 1111 1111 1111 1111  fConValue |= 0x1<<28;    //0001 0000 0000 0000 0000 0000 0000 0000  rGPIOFCON = fConValue;}void GPIONinit(void){  u32 nConValue;  //设置GPN0(连接KEY1)引脚为外部终端模式  //nConValue = rGPIONCON;  nConValue &= ~(0x3);     //1111 1111 1111 1111 1111 1111 1111 1100  nConValue |= 0x2;        //0000 0000 0000 0000 0000 0000 0000 0010  rGPIONCON = nConValue;}void GPIONinit1(void){  u32 n1ConValue;  n1ConValue = rGPIONPUD;  n1ConValue &= ~(0x3);     //1111 1111 1111 1111 1111 1111 1111 1100  n1ConValue |= 0x0;        //0000 0000 0000 0000 0000 0000 0000 0000  rGPIONPUD = n1ConValue;}void EINT0init(void){  //设置外部子中断控制器，即GPN0(EINT0)为低电平触发中断   u32 eConValue;  eConValue = rEINT0CON0;  eConValue &= ~(0x7);     //1111 1111 1111 1111 1111 1111 1111 1000  eConValue |= 0x0;        //0000 0000 0000 0000 0000 0000 0000 0000  rEINT0CON0 = eConValue;   rEINT0PEND = 0x1;}void ENABLEvic0(void){  u32 vConValue;  vConValue = rVIC0INTENABLE;  vConValue |= 0x1;        //0000 0000 0000 0000 0000 0000 0000 0001  rVIC0INTENABLE = vConValue;}void EINT0mask(void){  u32 mConValue;  mConValue = rEINT0MASK;  mConValue &= ~(0x1);     //1111 1111 1111 1111 1111 1111 1111 1110  rEINT0MASK = mConValue;}

3.以下是基于Window下armcc编译器的Makefile

all:armasm -o Startup.o Startup.s --debug --keep --cpu=ARM1176JZF-Sarmcc -c key.o key.c --debug --cpu=ARM1176JZF-S -O0armlink -o mykey.axf Startup.o key.o --ro_base=0x50200000 --rw_base=0x50203000 --first=Startup.o(start) --entry=0x50200000fromelf -o mykey.bin --bin mykey.axfclean:del *.o *.axf *.bin