350_int.c

C8051F350单片机的24位AD程序

//-----------------------------------------------------------------------------
// 包含文件
//-----------------------------------------------------------------------------
//
#include "C8051F350.H"
#include "C8051F350_command.h"
#include <intrins.h>
//-----------------------------------------------------------------------------
// 外部全局变量声明区
//-----------------------------------------------------------------------------
//
extern unsigned char GCV_uart_send_status;			//UART发送控制状态
extern unsigned char GCV_received_command_buf;		//UART接收命令缓冲
extern unsigned char GCV_adc0_conver_channel_num;	//ADC0转换通道号码
extern unsigned char GCV_conver_result_h;			//ADC0转换结果高位
extern unsigned char GCV_conver_result_l;			//ADC0转换结果低位

//-----------------------------------------------------------------------------
// 中断服务程序区
//-----------------------------------------------------------------------------
//准备好所有中断，以便在中断向量区生成RETI，有助抗干扰
//
//-----------------------------------------------------------------------------
// 外部0中断函数
//-----------------------------------------------------------------------------
//
void Int0_ISR(void)		interrupt 0
{
	_nop_();
	_nop_();
	_nop_();
}

//-----------------------------------------------------------------------------
// Timer0中断
//-----------------------------------------------------------------------------
// 
void Timer0_ISR(void)	interrupt 1
{	
	_nop_();
	_nop_();
	_nop_();
}
//-----------------------------------------------------------------------------
// 外部1中断函数
//-----------------------------------------------------------------------------
// 
void Int1_ISR(void)		interrupt 2
{
	_nop_();
	_nop_();
	_nop_();
}
//-----------------------------------------------------------------------------
// Timer1中断
//-----------------------------------------------------------------------------
//
void Timer1_ISR(void)   interrupt 3
{
	_nop_();
	_nop_();
	_nop_();
}
//-----------------------------------------------------------------------------
// UART0中断
//-----------------------------------------------------------------------------
//
void UART0_ISR(void)    interrupt 4
{
	unsigned char TCV_sbuf0_mirror_image;
	//发送采样数据
	if(TI0)											
	{	
		TI0 = 0;
		//检查还剩多少位数据未被发送出去
		if( GCV_uart_send_status == 5 )						
		{	
			//发送数据起始标志1
			SBUF0 = 0xda; 							
			GCV_uart_send_status--;							
		}
		//检查还剩多少位数据未被发送出去
		else if( GCV_uart_send_status == 4 )
		{
			//发送数据起始标志2
			SBUF0 = 0xad; 							
			GCV_uart_send_status--;							
		}
		//检查还剩多少位数据未被发送出去
		else if( GCV_uart_send_status == 3 )				
		{
			//发送数据通道号码
			SBUF0 = GCV_adc0_conver_channel_num; 
			//随后改变通道的号码			
			GCV_adc0_conver_channel_num += 0x11; 			
			if( GCV_adc0_conver_channel_num == 0x55 )
			{
				GCV_adc0_conver_channel_num = 0x11;
			}
			GCV_uart_send_status--;							
		}
		//检查还剩多少位数据未被发送出去
		else if( GCV_uart_send_status == 2 )			   	
		{	
			//发送转换结果高位
			SBUF0 = GCV_conver_result_h;				
			GCV_uart_send_status--;							
		}
		//检查还剩多少位数据未被发送出去
		else if( GCV_uart_send_status == 1 )			  	
		{	
			//发送转换结果低位
			SBUF0 = GCV_conver_result_l;				
			GCV_uart_send_status = 0;				
		}	
		else
		{
			//其他无效中断则初始化发送状态
			GCV_uart_send_status = 5;
		}
	}
	//接收上级命令
	if(RI0)
	{
		RI0 =0;
		TCV_sbuf0_mirror_image = SBUF0;
		//首先满足关键字A5
		if ( TCV_sbuf0_mirror_image == 0xa5 )												
		{
			GCV_received_command_buf = 0xa5;
		}
		//然后满足关键字F1
		else if ( ( TCV_sbuf0_mirror_image == 0xf1 ) & ( GCV_received_command_buf == 0xa5 ) )
		{
			GCV_received_command_buf = 0xf1;
		}
		//最后将命令放入命令缓冲
		else if ( GCV_received_command_buf == 0xf1 )											
		{
			GCV_received_command_buf = TCV_sbuf0_mirror_image;
		}
		//其他无效状态则初始化接收状态
		else																				
		{
			GCV_received_command_buf = 0xff;
		}		
	}
}

//-----------------------------------------------------------------------------
// ADC0中断
//-----------------------------------------------------------------------------
//
void ADC0_ISR(void)    interrupt 10
{
	//软件清除ADC0中断
	AD0INT = 0;	
	//ADC0进入空闲状态，等待设置转换参数									
	COM_ADC0_idle;									

	//保存转换结果高8位												
	GCV_conver_result_h = ADC0H;
	//保存转换结果低8位
	GCV_conver_result_l = ADC0M;					

	//判断下次应该采样哪个通道												
	if( GCV_adc0_conver_channel_num == 0x11 )		
	{	
		/*
		float TFV_temp_calculate_vlu;
		unsigned int	TIV_temp_result;*/		
		//上次采样为1通道，则此次采样2通道
		COM_ADC0_channels_2;
					
		/*
		//计算温度显示值(差分计算)
		TFV_temp_calculate_vlu = GCV_conver_result_h * 256 + GCV_conver_result_l;
		TFV_temp_calculate_vlu *= 2490;
		TFV_temp_calculate_vlu /= (65536 * 32);
		TFV_temp_calculate_vlu -= 54.3;
		TFV_temp_calculate_vlu /= 0.205;
		TFV_temp_calculate_vlu *= 335.54;
		TIV_temp_result = (unsigned int)TFV_temp_calculate_vlu;
		GCV_conver_result_l = (unsigned char)TIV_temp_result;
		GCV_conver_result_h = (unsigned char)(TIV_temp_result>>8); */
	}
	else if ( GCV_adc0_conver_channel_num == 0x22 )	
	{	
		//上次采样为2通道，则此次采样3通道
		COM_ADC0_channels_3;
	}
	else if ( GCV_adc0_conver_channel_num == 0x33 )	
	{
		//上次采样为3通道，则此次采样4通道
		COM_ADC0_channels_4;
	}
	else if ( GCV_adc0_conver_channel_num == 0x44 )	
	{
		//上次采样为4通道，则此次采样1通道
		COM_ADC0_channels_1;
		//COM_ADC0_channels_temp;
	}
	//启动下次单次转换
	COM_ADC0_single_conver;						
	//进入信息发送状态
	TI0 = 1;
	//看门狗计数复位
	PCA0CPH2 = 0x00;	
}