STM8S各个模块初始化

1、STM8S各个模块初始化转原作者真不错 2012-12-09 22:20:38| 分类： 默认分类 | 标签：stm8s |举报|字号 订阅/*可选择的内部或者外部时钟*/#ifdef HSE_EXTvoid ClkInit(void) CLK_ICKR = 0X00; /禁止高速内部时钟，从停机(Halt) 或活跃停机(Active Halt) 模式快速唤醒禁止 CLK_ECKR |= 0X01; /使能外部时钟 while(!(CLK_ECKR & 0x02); /看外部晶振是否启动 CLK_ECKR |= 0X01; /使能外部时钟 CLK_CKDIVR = 0Xf9; /外部12M H

2、Z晶振作为CPU时钟 /入选24Mhz就在CLK_SWCR |= 0X02;出现问题 CLK_SWR = 0XB4; /主时钟选择为外部晶振 while(!(CLK_SWCR & 0x8); CLK_SWCR |= 0X02; /时钟切换 CLK_PCKENR1 = 0Xaf; /使能fMASTER时钟与对应外设的连接(仅I2C和TIM2,and TIM1)还有UART1,uart3 spi CLK_PCKENR2 = 0X00; /0X0C; CLK_CSSR = 0X00; /时钟安全系统寄存器关 while(CLK_CCOR & 0x04); /空闲才可以写CCOSEL CLK_CCOR

3、 |= 0X0d; /使能CCO始终输出,6M while(!(CLK_CCOR & 0x04); /看CCO输出的时钟是否正在工作 while(CLK_CCOR & 0x02); /等待可输出时钟可用 /CLK_HSITRIMR = 0X00-1; /HSI时钟修正寄存器,HSITRIM3:0：HSI修正值#elsevoid ClkInit(void) CLK_ICKR=0X01; /时能高速内部时钟，从停机(Halt) 或活跃停机(Active Halt) 模式快速唤醒使能 CLK_ECKR=0X00; /禁止外部时钟 CLK_SWR =0XE1; /选择16M内部时钟为主时钟 CLK_S

4、WCR=0X00; /禁止时钟切换 CLK_CKDIVR=0X08; /8MHZ 4:301：fHSI = fHSI RC输出/2 , 2:0000：fCPU = fMASTER CLK_PCKENR1 = 0Xaf; /使能fMASTER时钟与对应外设的连接(仅I2C和TIM2,and TIM1)还有UART1,uart3 spi CLK_PCKENR2 = 0X00; /0X0C; CLK_CSSR=0X00; /时钟安全系统寄存器关 CLK_HSITRIMR=0X00-1; /HSI时钟修正寄存器,HSITRIM3:0：HSI修正值#endif/*外部中断*/void Interrupt

5、Init(void) PD_DDR &=(0X40); /PD6设置为按键输? PD_CR1 |=0X40; PD_CR2 &=(0X40); /禁止外部中断/ PD_CR2 |=0X40; /使能外部中断 EXTI_CR1 |=0X80; /PD6下降沿出触发中断/ EXTI_CR1 |=0X40; /PD6上升沿出触发中断/*串口收发*/void Uart3Init(void) UART3_CR1 = 0x00; UART3_CR2 = 0x00; UART3_CR3 = 0x00; /1个停止位 UART3_BRR2 = 0x04; /24M的Fmaster下9600的波特率 UART3

6、_BRR1 = 0x9c; /24000000/9600 = 0x09c4 UART3_CR2 = 0x2c; /发送接收都使能，使能接收中断 void Uart3SendChar(U8 *Send_Buff,U8 Cnt) U8 i; for(i=0;iCnt;i+) while(!(UART3_SR & 0x80); UART3_DR=Send_Buffi; /*定时器*/void Timer1Init(void) TIM1_CR1 |=0X04; /自动重载，只有溢出才产生更新中断 TIM1_IER |=0X01; /允许更新中断/ TIM2_SR1=0X00; /状态寄存器 TIM1_

7、PSCR =0X01; /PSC3:0：预分频器的值 ,开预分频功能不许使能EGR中的UG位/ TIM1_PSCR =0X00; /PSC3:0：4预分频器的值 TIM2_EGR |=0X01; /时间产生状态寄存器,重新初始化计数器，并产生一个更新事件。 /如果不开预分频功能，此位可以删去/TIM2_CCMR1=0X00; /捕获/比较模式寄存器,可用于选择PWM输出端口 /TIM2_CCMR1=0X68; /PWM模式，通道1，预装载使能/ TIM2_CCMR2=0X68; /PWM模式，通道2，预装载使能/ TIM2_CCER2=0X03; /使能PWM输出通道/ TIM2_CCER1=

8、0X03; /使能PWM输出通道 TIM1_CNTRH=0X9C; /计数值 TIM1_CNTRL=0X40; TIM1_ARRH=0X9C; /自动重载值(10ms进一次中断),8M2分频，40000/4000000=10ms TIM1_ARRL=0X40; TIM1_CR1 |=0X01; /开计数器/*AWU唤醒*/void AWU_Open(void) AWU_APR = 0X3E; /APPRdiV=64 AWU_TBR = 0X0D; /time interval = 211 *APPRdiV/Fls=2048*64/128KHZ=1S 0D=2S/ AWU_TBR = 0X0E;

9、 /time interval = 211 *APPRdiV/Fls=2048*64/128KHZ=1S 0E=大约5S AWU_CSR = 0x30; /enable AWU,AWU_INT CLK_ICKR |= 0X20; /1：活跃停机(Active Halt) 模式下主dian ya tiao jie qi guan bivoid AWU_Close(void) AWU_APR = 0X3F; /APPRdiV AWU_TBR = 0X00; /disable time interval AWU_CSR = 0x00; /disable AWU CLK_ICKR &= (0X20);

10、void EEPROM_Init(void) FLASH_CR1 = 0x00; FLASH_CR2 = 0x00; FLASH_DUKR = MASS_KEY1; FLASH_DUKR = MASS_KEY2; /密钥使能 while(!(FLASH_IAPSR&0x08); /*等待写保护解锁*/*EEPROM*/u8 EEPROM_Write(u8 addr,u8 dat) u16 TimeOut; *(u8*)(addr + EEP_BASE) = dat; for( TimeOut = 0; TimeOut 0xFFFF; TimeOut+ ) if( FLASH_IAPSR & (

11、 WR_PG_DIS | EOP_BIT )return 1; /编程完成或者写到了写保护区 return 0; /超时退出 / while(!(FLASH_IAPSR&0x02); /*等待写完成*/u8 EEPROM_Read(u8 addr) return *(u8*)(EEP_BASE + addr);void EEPROM_THREE_BYTE_WRITE(void) EEPROM_Write(0x00,i2c_buff0); EEPROM_Write(0x01,i2c_buff1); EEPROM_Write(0x02,i2c_buff2);void EEPROM_THREE_BY

12、TE_READ(void) if(ADC_OnOff=1) ADC_ON_OR_OFF=2; else ADC_ON_OR_OFF=EEPROM_Read(0x00); ADC_OPEN_MIN=EEPROM_Read(0x01); ADC_OPEN_TIME=EEPROM_Read(0x02);/*ADC*/void adc_init(void) ADC_CR1 |=0X00; /关闭ADC，2分频 ADC_CR2 |=0X08; /数据右对齐，low 8BIT AT ADC_DRL;非扫描模式 ADC_CSR =0X04; /选择通道4， 禁止中断 /*取走ADC转换yi个通道的数据*/u

13、16 adc_converter(void) u8 m; for(m=0;m 7); / 十位I2C_CR1 = 0x01; /开I2CI2C_CR2 |= 0x04; /只产生应答信号，不产生起始和停止位I2C_ITR = 0x07; /使能中断void spi_init(void) SPI_CR2 = 0X01; SPI_CR1 = 0X44; /8MHZ 主模式 PB_DDR |= 1 5; /SCK PB_CR1 |= 1 5; /output PB_DDR |= 1 6; /MOSI PB_CR1 |= 1 6; /output PB_DDR &= (1 7); /MISO PB_C

14、R1 |= 1 =KeyInContinue1S) / KeyRestFlag=0; u16Timer1Cnt=0; keyinbuf=KeyRst; else / KeyRestFlag=0; keyinbuf=0; u16Timer1Cnt=0; if(keyinbuf=keychkbuf) if(f_key_state) keycvtbuf=keychkbuf; f_key_state=0; else keychkbuf=keyinbuf; f_key_state=1; if(keycvtbuf!=keyoldbuf) keyvalue=keycvtbuf&(keyoldbuf); keyoldbuf=keycvtbuf; /* if(keycvtbuf!=keyoldbuf) /按键按下 / k