文件名称：stm I2C中断程序
文件大小：26KB
文件格式：C
更新时间：2017-04-02 08:30:33
.c文件
stm8si2c程序,调试通过 INTERRUPT_HANDLER(I2C_IRQHandler, 19) { /* In order to detect unexpected events during development, it is recommended to set a breakpoint on the following instruction. */ struct SCB_T *system=&system_process; unsigned char i,i2c_sr1,i2c_sr2,i2c_event,i2c__status=0,temp,sr1_analysis_int_resource[8],sr2_analysis_int_resource[8]; char i2c_interrupt_type=0,p;//在一次I2中断中，I2C中断中的中断标志位个数； disableInterrupts();//关总中断 i2c_sr1=I2C->SR1; p=I2C->SR3; i2c_sr2=I2C->SR2; //temp=I2C->SR3; //analysis interrupt resource in i2c->sr1 register sr1_analysis_int_resource[0]=i2c_sr1&I2C_SR1_SB; sr1_analysis_int_resource[1]=i2c_sr1&I2C_SR1_ADDR; sr1_analysis_int_resource[2]=i2c_sr1&I2C_SR1_BTF; sr1_analysis_int_resource[3]=i2c_sr1&I2C_SR1_ADD10; sr1_analysis_int_resource[4]=i2c_sr1&I2C_SR1_STOPF; // sr1_i2c__state[5]=i2c_state&((u8)I2C_SR1_BIT6); sr1_analysis_int_resource[6]=i2c_sr1&I2C_SR1_RXNE; sr1_analysis_int_resource[7]=i2c_sr1&I2C_SR1_TXE; //analysis interrupt resource in i2c->sr2 register sr2_analysis_int_resource[0]=i2c_sr2&I2C_SR2_BERR; sr2_analysis_int_resource[1]=i2c_sr2&I2C_SR2_ARLO; sr2_analysis_int_resource[2]=i2c_sr2&I2C_SR2_AF; sr2_analysis_int_resource[3]=i2c_sr2&I2C_SR2_OVR; sr2_analysis_int_resource[5]=i2c_sr2&I2C_SR2_WUFH; if(sr1_analysis_int_resource[0]==I2C_SR1_SB) {i2c__status=0x01;i2c_interrupt_type++;} if(sr1_analysis_int_resource[1]==I2C_SR1_ADDR) {i2c__status=0x02;i2c_interrupt_type++;} if(sr1_analysis_int_resource[2]==I2C_SR1_BTF) {i2c__status=0x03;i2c_interrupt_type++;} if(sr1_analysis_int_resource[3]==I2C_SR1_ADD10) {i2c__status=0x04;i2c_interrupt_type++;} if(sr1_analysis_int_resource[4]==I2C_SR1_STOPF) {i2c__status=0x05;i2c_interrupt_type++;} if(sr1_analysis_int_resource[6]==I2C_SR1_RXNE) {i2c__status=0x06;i2c_interrupt_type++;} if(sr1_analysis_int_resource[7]==I2C_SR1_TXE) {i2c__status=0x07;i2c_interrupt_type++;} if(sr2_analysis_int_resource[0]==I2C_SR2_BERR) {i2c__status=0x08;i2c_interrupt_type++;} if(sr2_analysis_int_resource[1]==I2C_SR2_ARLO) {i2c__status=0x09;i2c_interrupt_type++;} if(sr2_analysis_int_resource[2]==I2C_SR2_AF) {i2c__status=0x0a;i2c_interrupt_type++;} if(sr2_analysis_int_resource[3]==I2C_SR2_OVR) {i2c__status=0x0b;i2c_interrupt_type++;} if(sr2_analysis_int_resource[5]==I2C_SR2_WUFH) {i2c__status=0x0c;i2c_interrupt_type++;} if(i2c_interrupt_type>=2) /*there are more than one interrupt resource in the time*/ { if(i2c_interrupt_type==2) { if((sr1_analysis_int_resource[1]==I2C_SR1_ADDR)&&(sr1_analysis_int_resource[7]==I2C_SR1_TXE)) { I2C->DR=system->i2c.send_frame.data[system->i2c.send_frame.proc]; system->i2c.send_frame.proc++; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x62; } else if((sr1_analysis_int_resource[7]==I2C_SR1_TXE)&&(sr1_analysis_int_resource[2]==I2C_SR1_BTF)) { system->i2c.send_frame.terminate=0; //set I2C transfer terminate bit; system->i2c.send_frame.mod=0; system->i2c.send_frame.write=0; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x64; } else if((sr1_analysis_int_resource[7]==I2C_SR1_TXE)&&(sr2_analysis_int_resource[2]==I2C_SR2_AF)) { I2C->CR2|=I2C_CR2_STOP; I2C->SR2&=(~I2C_SR2_AF);//clear AF bit; system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x64; } else { system->i2c.error=1; I2C_ITConfig(I2C_IT_EVT, DISABLE); system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x37; } } else { system->i2c.error=1; I2C_ITConfig(I2C_IT_EVT, DISABLE); system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x37; } } else { switch(i2c__status) { case I2C_SR1_SB_proc: //如果是发送模式 if(system->i2c.send_frame.mod==1)//说明本次中断之前是从模式，说明这是在从模式下发的起始位； { //EV5 p=I2C->SR1; I2C->DR=system->i2c.send_frame.add__L; //自动清除I2C_SR1_SB标志 system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x38; } else { if(system->i2c.rev_frame.mod==1) //说明本次中断之间是主模式，这次发的是重复起始位； { //EV6如果是接收模式 p=I2C->SR1; I2C->DR=system->i2c.rev_frame.add__L;//自动清除I2C_SR1_SB标志； system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x51; } else { system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x36; } } break; case I2C_SR1_ADDR_proc: p=I2C->SR1; temp=I2C->SR3;//软件读取SR1寄存器后,对SR3寄存器的读操作将清除该位 temp&=(u8)I2C_SR3_TRA; I2C->CR2|=(u8)I2C_CR2_ACK;// 使能应答位 I2C->CR2&=(u8)(~I2C_CR2_POS);//设置接受到当字节应答 //如果是发送模式 if(system->i2c.send_frame.mod==1) { if(temp==(u8)I2C_SR3_TRA) {; } else { system->i2c.error=1; } } else { if(system->i2c.rev_frame.mod==1) { if(temp==0)//machine at a master-receive mod { system->i2c.rev_frame.proc=0; } else { system->i2c.error=1; } } else { system->i2c.error=1; } } system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x52; break; case I2C_SR1_RXNE_proc: if(system->i2c.rev_frame.proc<=(u8)(system->i2c.rev_frame.num-3)) { system->i2c.rev_frame.data[system->i2c.rev_frame.proc]=I2C->DR; system->i2c.rev_frame.proc++; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x57; } else if(system->i2c.rev_frame.proc==(u8)(system->i2c.rev_frame.num-2)) { system->i2c.rev_frame.data[system->i2c.rev_frame.proc]=I2C->DR; system->i2c.rev_frame.proc++; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x58; I2C->CR2&=(u8)(~I2C_CR2_ACK);//不返回应答 I2C->CR2|=I2C_CR2_STOP; //发停止位结束这次数据接收； } else if(system->i2c.rev_frame.proc>=(u8)(system->i2c.rev_frame.num-1)) { system->i2c.rev_frame.data[system->i2c.rev_frame.proc]=I2C->DR; system->i2c.rev_frame.proc++; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x59; system->i2c.rev_frame.terminate=0; //set I2C transfer terminate bit; system->i2c.rev_frame.mod=0; system->i2c.rev_frame.read=0; } else { system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0xfb; } break; case I2C_SR1_TXE_proc: if(system->i2c.send_frame.proc<=(u8)(system->i2c.send_frame.num-1)) { I2C->DR=system->i2c.send_frame.data[system->i2c.send_frame.proc]; system->i2c.send_frame.proc++; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x61; } else if(system->i2c.send_frame.proc=(u8)(system->i2c.send_frame.num)) { I2C->CR2|=I2C_CR2_STOP; // 发停止位结束 这次数据接收； I2C_ITConfig(I2C_IT_BUF, DISABLE); system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x60; } else { system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0xfc; } break; case I2C_SR2_AF_proc: I2C->CR2|=I2C_CR2_STOP; I2C->SR2&=(~I2C_SR2_AF);//clear AF bit; system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0x63; break; default: system->i2c.error=1; system->i2c.debug.reserve[system->i2c.int_debug_count].type=0xfd; break; } } system->i2c.int_debug_count++; enableInterrupts();//开总中断 }