stm8C语言例程.docx

1、stm8C语言例程（1）;名称 ：流水灯;描述 : ；先从上至下点亮所有的LED，再逐个点亮单个LED;*/#include stm8s105s4.h#define uchar unsigned char#define uint unsigned intuchar table=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f; /存放点亮单个LED的代码void DelayMS(uint s) /延时子函数，约延时1ms uint i; for(s;s0;s-) for(i=0;i500;i+); void init(void) /stm8初始化函数 PB_DDR

2、 = 0xff; PB_CR1 = 0xff; / 将PB设置成推挽输出 PB_CR2 = 0x00; CLK_SWR = 0xE1; /选内部高速时钟作为主时钟 CLK_CKDIVR = 0x08; /将CPU主频设置为2M（STM8默认的就是内部高速时钟的八分频，即2MH，这里只是告诉大家设置方法）void main() uchar i; init(); while (1) /无限循环 PB_ODR = 0xff; /先将所有的LED关闭 for(i=0;i9;i+) /一开始是所有的LED熄灭，再逐点亮所有LED，共九种状态 DelayMS(500); /延时500毫秒 PB_ODR=1

3、; /将PB_ODR向左移动一位，逐渐点亮所有LED for(i=0;i8;i+) PB_ODR=tablei; /将table中的数依次赋给PB_ODR ，从上至下依次点亮LED DelayMS(500); 中断向量：/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices * Copyright (c) 2007 STMicroelectronics */typedef void far (*interrupt_handler_t)(void);struct interrupt_vector unsigned char interrupt_instr

4、uction; interrupt_handler_t interrupt_handler;far interrupt void NonHandledInterrupt (void) /* in order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction */ return;extern void _stext(); /* startup routine */struct interrupt_vector cons

5、t _vectab = 0x82, (interrupt_handler_t)_stext, /* reset */ 0x82, NonHandledInterrupt, /* trap */ 0x82, NonHandledInterrupt, /* irq0 */ 0x82, NonHandledInterrupt, /* irq1 */ 0x82, NonHandledInterrupt, /* irq2 */ 0x82, NonHandledInterrupt, /* irq3 */ 0x82, NonHandledInterrupt, /* irq4 */ 0x82, NonHand

6、ledInterrupt, /* irq5 */ 0x82, NonHandledInterrupt, /* irq6 */ 0x82, NonHandledInterrupt, /* irq7 */ 0x82, NonHandledInterrupt, /* irq8 */ 0x82, NonHandledInterrupt, /* irq9 */ 0x82, NonHandledInterrupt, /* irq10 */ 0x82, NonHandledInterrupt, /* irq11 */ 0x82, NonHandledInterrupt, /* irq12 */ 0x82,

7、NonHandledInterrupt, /* irq13 */ 0x82, NonHandledInterrupt, /* irq14 */ 0x82, NonHandledInterrupt, /* irq15 */ 0x82, NonHandledInterrupt, /* irq16 */ 0x82, NonHandledInterrupt, /* irq17 */ 0x82, NonHandledInterrupt, /* irq18 */ 0x82, NonHandledInterrupt, /* irq19 */ 0x82, NonHandledInterrupt, /* irq

8、20 */ 0x82, NonHandledInterrupt, /* irq21 */ 0x82, NonHandledInterrupt, /* irq22 */ 0x82, NonHandledInterrupt, /* irq23 */ 0x82, NonHandledInterrupt, /* irq24 */ 0x82, NonHandledInterrupt, /* irq25 */ 0x82, NonHandledInterrupt, /* irq26 */ 0x82, NonHandledInterrupt, /* irq27 */ 0x82, NonHandledInter

9、rupt, /* irq28 */ 0x82, NonHandledInterrupt, /* irq29 */;（2）：矩阵键盘、数码管：;描述 : 按下相应按键显示0到F中对应的数;*/#include #define uint unsigned int #define uchar unsigned char uchar table=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;uchar num;void delay(uchar a) uchar i; for(a;a0;a-

10、) for(i=0;i255;i+);void init(void) PB_DDR=0XFF; PB_CR1=0XFF; / 将PB设置成推挽输出 PC_DDR=0X1F; PC_CR1=0XFF; / 将PC设置成推挽输出 PE_DDR=0x26; PE_CR1=0XFF; /将PE5，PE2，PE1为推挽输出，其他的设为上拉输入 PD_DDR=0X80; PD_CR1=0X80; /将PD7设为推挽输出 /*这里的设置比LED的和数码管的设置要复杂，开始引入输入 模式，矩阵键盘列为输出，行为输入，请参考协会开发板原理图及STM8转51PDF资料*/ /*扫描方式也可为行输出，列输入，读者可

11、以自己尝试着修改*/ uchar keys(void) /此子函数看起来很长，实则只有前面一截内容，下面的“同理可得” uchar temp; PE_ODR=0X26; /将列中的PD7置为低电平，列中的其他三个置为高电平 PD_ODR=0x00; delay(40); /这里要说明一下，由于矩阵键盘第一列和AD键盘共用一个IO口 /AD键盘的RC会影响IO口电平变化的时间，这里需要延时一段时间,让电容C放电完毕 if(PE_IDR&0x40)=0) /如果第一列的第四行按键被按下，则进入if语句内 delay(5); /延时一段时间，等待IO口电平稳定，即消抖 if(PE_IDR&0x40)

12、=0) /再次判断按键是否被按下，避免干扰 num=12; /如果第一列的第四行按键被按下,则令num=12,即数码管显示 为C while(PE_IDR&0x40)=0); /如果按键没有松开，则等待 temp=PC_IDR&0xe0; if(temp!=0xe0) delay(5); temp=PC_IDR&0xe0; if(temp!=0xe0) switch(temp) case 0xc0:num=0; /如果temp的值为0xc0，则说明第1个按键被按下，下面的依次类推 break; case 0xa0:num=4; break; case 0x60:num=8; break; wh

13、ile(PC_IDR&0xe0)!=0xe0); PE_ODR=0X24; PD_ODR=0x80; if(PE_IDR&0x40)=0) num=13; delay(5); while(PE_IDR&0x40)=0); temp=PC_IDR&0xe0; if(temp!=0xe0) delay(5); temp=PC_IDR&0xe0; if(temp!=0xe0) switch(temp) case 0xc0:num=1; break; case 0xa0:num=5; break; case 0x60:num=9; break; while(PC_IDR&0xe0)!=0xe0); P

14、E_ODR=0X22; PD_ODR=0x80; if(PE_IDR&0x40)=0) num=14; delay(5); while(PE_IDR&0x40)=0); temp=PC_IDR&0xe0; if(temp!=0xe0) delay(5); temp=PC_IDR&0xe0; if(temp!=0xe0) switch(temp) case 0xc0:num=2; break; case 0xa0:num=6; break; case 0x60:num=10; break; while(PC_IDR&0xe0)!=0xe0); PE_ODR=0X06; PD_ODR=0x80;

15、if(PE_IDR&0x40)=0) num=15; delay(5); while(PE_IDR&0x40)=0); temp=PC_IDR&0xe0; if(temp!=0xe0) delay(5); temp=PC_IDR&0xe0; if(temp!=0xe0) switch(temp) case 0xc0:num=3; break; case 0xa0:num=7; break; case 0x60:num=11; break; while(PC_IDR&0xe0)!=0xe0); return num; void main() uchar n; init(); while(1) n

16、=keys(); /把函数keys()的返回值num赋给n PB_ODR=tablen; PC_ODR|=0x00; /选择第一个数码管 中断向量：/* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices * Copyright (c) 2007 STMicroelectronics */typedef void far (*interrupt_handler_t)(void);struct interrupt_vector unsigned char interrupt_instruction; interrupt_handler_t interrup

17、t_handler;far interrupt void NonHandledInterrupt (void) /* in order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction */ return;extern void _stext(); /* startup routine */struct interrupt_vector const _vectab = 0x82, (interrupt_handler

18、_t)_stext, /* reset */ 0x82, NonHandledInterrupt, /* trap */ 0x82, NonHandledInterrupt, /* irq0 */ 0x82, NonHandledInterrupt, /* irq1 */ 0x82, NonHandledInterrupt, /* irq2 */ 0x82, NonHandledInterrupt, /* irq3 */ 0x82, NonHandledInterrupt, /* irq4 */ 0x82, NonHandledInterrupt, /* irq5 */ 0x82, NonHa

19、ndledInterrupt, /* irq6 */ 0x82, NonHandledInterrupt, /* irq7 */ 0x82, NonHandledInterrupt, /* irq8 */ 0x82, NonHandledInterrupt, /* irq9 */ 0x82, NonHandledInterrupt, /* irq10 */ 0x82, NonHandledInterrupt, /* irq11 */ 0x82, NonHandledInterrupt, /* irq12 */ 0x82, NonHandledInterrupt, /* irq13 */ 0x8

20、2, NonHandledInterrupt, /* irq14 */ 0x82, NonHandledInterrupt, /* irq15 */ 0x82, NonHandledInterrupt, /* irq16 */ 0x82, NonHandledInterrupt, /* irq17 */ 0x82, NonHandledInterrupt, /* irq18 */ 0x82, NonHandledInterrupt, /* irq19 */ 0x82, NonHandledInterrupt, /* irq20 */ 0x82, NonHandledInterrupt, /*

21、irq21 */ 0x82, NonHandledInterrupt, /* irq22 */ 0x82, NonHandledInterrupt, /* irq23 */ 0x82, NonHandledInterrupt, /* irq24 */ 0x82, NonHandledInterrupt, /* irq25 */ 0x82, NonHandledInterrupt, /* irq26 */ 0x82, NonHandledInterrupt, /* irq27 */ 0x82, NonHandledInterrupt, /* irq28 */ 0x82, NonHandledIn

22、terrupt, /* irq29 */;（3）;名称 :定时器的使用 ;描述 : 数码管显示0F，利用定时器使得1秒变换一次;*/#include #define uint unsigned int #define uchar unsigned char uchar table=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e;uchar t;void init(void) PB_DDR=0XFF; PB_CR1=0XFF; PB_CR2=0X00; PC_DDR=0XFF; PC_

23、CR1=0XFF; PC_CR2=0X00; TIM2_EGR=0X01; /允许产生更新事件 TIM2_PSCR=0X01; /分频，使频率为1MHz TIM2_ARRH=0XC3; /更新后计数器的值 TIM2_ARRL=0X50; TIM2_CR1=0X05; /允许定时器工作 TIM2_IER=0X01; /允许更新中断 _asm(rim); /汇编语句，启动定时器 /注意！使用定时器时要定义中断函数入口，详请打开main.c下面的stm8_interrupt_vector.c，请按照注释进行修改 void main(void) uchar i=0,j; init(); while(1

24、) PB_ODR=tablei; PC_ODR=0x02; /选择第二个数码管显示 if(t=20) /这里设置50ms进入一次中断，t=20刚好为1秒 t=0; /t清零 i+; if(i=16) i=0; /由于数组中只有16个数，所以i最大只能为15，否则显示会出现乱码现象 far interrupt void TIM2_UP_IRQHandler (void) /中断函数 TIM2_SR1 = 0x00; /进入中断时TIM2_SR1最低位会被硬件自动置一，进入中断后必须将其清零，否则无法再次产生中断 t+; /进入中断后t自加1/* BASIC INTERRUPT VECTOR TA

25、BLE FOR STM8 devices * Copyright (c) 2007 STMicroelectronics */typedef void far (*interrupt_handler_t)(void);struct interrupt_vector unsigned char interrupt_instruction; interrupt_handler_t interrupt_handler;far interrupt void NonHandledInterrupt (void) /* in order to detect unexpected events during

26、 development, it is recommended to set a breakpoint on the following instruction */ return;extern void _stext(); /* startup routine */extern far interrupt void TIM2_UP_IRQHandler (void); /使用定时器要加上这句话struct interrupt_vector const _vectab = 0x82, (interrupt_handler_t)_stext, /* reset */ 0x82, NonHandl

27、edInterrupt, /* trap */ 0x82, NonHandledInterrupt, /* irq0 */ 0x82, NonHandledInterrupt, /* irq1 */ 0x82, NonHandledInterrupt, /* irq2 */ 0x82, NonHandledInterrupt, /* irq3 */ 0x82, NonHandledInterrupt, /* irq4 */ 0x82, NonHandledInterrupt, /* irq5 */ 0x82, NonHandledInterrupt, /* irq6 */ 0x82, NonHandledInterrupt, /* irq7 */ 0x82, NonHandledInterrupt, /* irq8 */ 0x82, NonHandledInterrupt, /* irq9 */ 0x82, NonHandledInterrupt, /* irq10 */ 0x82, NonHandledInterrupt, /* irq11 */ 0x82, NonHandledInterrupt, /* irq12 */