16V554 的测试代码

时间：2015-12-30 17:18:46 阅读：195 评论：0 收藏：0 [点我收藏+]

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　　 //------------------------------------------------------------------------

#include "AT16C554.H"
//--------------------------------------------------------------------------------------------------
code Uint PORTAddrTABLE[PortNumber]={STARTADDR_SERIAL1,
STARTADDR_SERIAL2,
STARTADDR_SERIAL3,
STARTADDR_SERIAL4}; //串口端口地址映射表
xdata TCommHandle CommDevice[PortNumber];
sbit reset_16c554 = P1^4; //ST16C554 复位控制线
//---------------------------------------------------------------------------------------------------
// Define Private Faction
//-----------------------------------------------------------------------------------------------------
bool ReadPortRecBuf(uchar Port,Uchar *Byte);
bool WritePortSendBuf(uchar Port,Uchar Byte);
void Port_open(Uchar PortID,Uint Baud);
//-------------------------------------------------------------------------
// Define Public Faction
//-------------------------------------------------------------------------
bool Init_16c554(void);
void Port_open(Uchar PortID,Uint Baud);
//void Port_open(Uchar PortID,int Baud,Uchar DataBitNum,Uchar Parit,Uchar Stop);
void Port_close(Uchar PortID);
int Port_Receive(Uchar PortID,void *Buffer,int Count);
int Port_Send(Uchar PortID,void *Buffer,int Count);
//---------------------------------------------------------------------------------------------
// Public Faction Code
//---------------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------
// 初始化ST16C554
//---------------------------------------------------------------------------------------------
bool Init_16c554(void)
{
uchar xdata *ptr;
uchar i=Init_16c554_Count;
bool Result=false;
while(--i) // 复位10次不成功，则返回出错
{
_nop_();
reset_16c554 = FREE_RESET;
ms_delay(5);
reset_16c554 = RESET; // 复位16C554
ms_delay(10); // 延时1毫秒
reset_16c554 = FREE_RESET;
ms_delay(10);
ptr = STARTADDR_SERIAL1+SPR; // 通道1临时寄存器
*ptr = 0xaa; // 写测试值到临时寄存器
_nop_();
_nop_();
if(*ptr == 0xaa)
{
Result=true;
break;
};//end if
};//end while
for(i=0;i<PortNumber;i++) CommDevice[i].RAMAddress_Map=PORTAddrTABLE[i];
return Result;
}
//---------------------------------------------------------------------------------------------
// 打开串口
//---------------------------------------------------------------------------------------------
void Port_open(Uchar PortID,Uint Baud)
{
uchar xdata *ptr;
ptr = CommDevice[PortID].RAMAddress_Map; // 取端口的基地址
*(ptr+LCR) = LCR_DIV_EN; // 允许发送波特率
*(ptr+DLM) = (uchar)(Baud>>8);
*(ptr+DLL) = (uchar)Baud; // 设置默任波特率为19200
*(ptr+LCR) = LCR_WORD_LEN8|LCR_STOP_LEN1; // 设置字长为8，1个停止位，无校验位
*(ptr+FCR) = FIFO_EN|FIFO_TRI_LEVEL_1|FIFO_CLEAR_RCVR|FIFO_CLEAR_XMIT|FIFO_DMA_MODE; // 设置FIFO 控制寄存器
*(ptr+IER) = IER_TRANSMITHOLD_INT|IER_RECEIVEHOLD_INT; // 设置中断屏蔽寄存器
*(ptr+MCR) = MCR_INTX_EN; // 允许中断引脚输出
if(PortID==0) EX0 = true; // 开外部中断0(通道1中断)
if(PortID==1) EX1 = true; // 开外部中断1(通道2中断)
if(PortID==2) EX2 = true; // 开外部中断2(通道3中断)
if(PortID==3) EX3 = true; // 开外部中断3(通道4中断)
CommDevice[PortID].CommReceive_Head=0;
CommDevice[PortID].CommReceive_Trail=0;
CommDevice[PortID].CommSend_Head=0;
CommDevice[PortID].CommSend_Trail=0;
CommDevice[PortID].Comm_Stu=SERIAL_STU_FREE;
}
//---------------------------------------------------------------------------------------------
// 关闭指定的端口
//---------------------------------------------------------------------------------------------
/*void Port_close(Uchar PortID)
{
uchar xdata *ptr;
ptr = CommDevice[PortID].RAMAddress_Map; // 取端口的基地址
*(ptr+LCR) = LCR_DIV_Dis; // 禁止发送波特率
*(ptr+MCR) = MCR_INTX_Dis; // 允许中断引脚输出
CommDevice[PortID].CommReceive_Head=0;
CommDevice[PortID].CommReceive_Trail=0;
CommDevice[PortID].CommSend_Head=0;
CommDevice[PortID].CommSend_Trail=0;
CommDevice[PortID].Comm_Stu=SERIAL_STU_FREE;
if(PortID==0) EX0 = false; // 关外部中断0(通道1中断)
if(PortID==1) EX1 = false; // 关外部中断1(通道2中断)
if(PortID==2) EX2 = false; // 关外部中断2(通道3中断)
if(PortID==3) EX3 = false; // 关外部中断3(通道4中断)
}*/
//--------------------------------------------------------------------------------------------------
//功能：从串口中接收数据
//返回值：从串口中接收到的数据个数
//参数：
// Buffer：接收数的缓冲区
// Count：想从串口缓冲区中接收数据个数
//--------------------------------------------------------------------------------------------------
/*int Port_Receive(uchar Port,register void *Buffer,int Count)
{
Uchar Size=0;
if(Port>PortNumber-1) return Size;
while((Size<Count)&&(ReadPortRecBuf(Port,Buffer)))
{
Size++;
Buffer=Buffer+1;
};//end while
return Size;
}*/
//--------------------------------------------------------------------------------------------------
//功能：往串口发送数据
//返回值：已发送的数据个数
//参数：
// Buffer：发送数据的缓冲区
// Count：想从串口发送数据的个数
//--------------------------------------------------------------------------------------------------
int Port_Send(uchar Port,register void *Buffer,int Count)
{
uchar i=0;
Uchar Size=0;
uchar xdata *ptr;
if(Port>PortNumber-1) return Size;
ptr = CommDevice[Port].RAMAddress_Map; // 取端口基地址
while(Size<Count)
{
if(WritePortSendBuf(Port,*((Uchar *)Buffer)))
{
Size=Size+1;
Buffer=Buffer+1;
};//end if
if(CommDevice[Port].Comm_Stu==SERIAL_STU_FREE)
{
for(i=0;(i<FIFO_SIZE)&&(CommDevice[Port].CommSend_Head!=CommDevice[Port].CommSend_Trail);i++)
{
CommDevice[Port].CommSend_Trail=(CommDevice[Port].CommSend_Trail+1)%CommMaxSendBuffer;
*(ptr+THR) = CommDevice[Port].CommSendBuffer[CommDevice[Port].CommSend_Trail]; // 发送数据
};//end for
CommDevice[Port].Comm_Stu = SERIAL_STU_BUSY;
};//end if
};//end while
return Size;
}
//----------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------
//私有函数
//----------------------------------------------------------------------------------------------------
//功能：从串口接收缓冲区中取得数据
//返回值：
// true: 从缓冲区中成功取得数据
// false: 从缓冲区中无法取得数据
//参数： *Byte：从缓冲区中取得数据返回
//-----------------------------------------------------------------------------------------------------
/*bool ReadPortRecBuf(uchar Port,Uchar *Byte)
{
if(CommDevice[Port].CommReceive_Trail==CommDevice[Port].CommReceive_Head) return false;
*Byte=CommDevice[Port].CommReceiveBuffer[CommDevice[Port].CommReceive_Trail];
CommDevice[Port].CommReceive_Trail=(CommDevice[Port].CommReceive_Trail+1)%CommMaxReceiveBuffer;
return true;
}*/
//-----------------------------------------------------------------------------------------------------
//功能：往串口发送缓冲区中写数据
//返回值：
// true: 往缓冲区中写数据成功
// false: 从缓冲区中写数据失败
//参数： Byte：往缓冲区中写入的数据
//------------------------------------------------------------------------------
bool WritePortSendBuf(uchar Port,Uchar Byte)
{
if((CommDevice[Port].CommSend_Head+1)%CommMaxSendBuffer==CommDevice[Port].CommSend_Trail) return false;
CommDevice[Port].CommSend_Head=(CommDevice[Port].CommSend_Head+1)%CommMaxSendBuffer;
CommDevice[Port].CommSendBuffer[CommDevice[Port].CommSend_Head]=Byte;
return true;
}
//--------------------------------------------------------------------------------
// 外部扩展串行口1中断处理程序(外部中断0)
//--------------------------------------------------------------------------------
void serial1_int() interrupt 0
{
uchar xdata *ptr;
uchar event;
uchar port;
port = CHANL1_PORT;
ptr = CommDevice[port].RAMAddress_Map; // 读ISR 中断状态寄存器
event = *(ptr+ISR)&0x0f; // 读最高优先级别的中断码
_nop_();
switch(event)
{
case EVENT_RXRDY: // 接受数据到中断
case EVENT_RXRDY_TIMEOUT:
for(;*(ptr+LSR)&EVENT_LSR_RECEIVE;)
{
CommDevice[port].CommReceiveBuffer[CommDevice[port].CommReceive_Head] = *(ptr+RHR);
if(((CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer)!=CommDevice[port].CommReceive_Trail)
CommDevice[port].CommReceive_Head=(CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer;
}; //end for
break;
case EVENT_TXRDY: //发送数据中断
if(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head) //判断数据包是否发送完毕
{
for(event=0;(event<FIFO_SIZE)&&(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head);event++)
{
CommDevice[port].CommSend_Trail=(CommDevice[port].CommSend_Trail+1)%CommMaxSendBuffer;
*(ptr+THR) = CommDevice[port].CommSendBuffer[CommDevice[port].CommSend_Trail];
};//end for
CommDevice[port].Comm_Stu = SERIAL_STU_BUSY;
}else CommDevice[port].Comm_Stu = SERIAL_STU_FREE;
break;
};//end switch
}
//--------------------------------------------------------------------------------
// 外部扩展串行口2中断处理程序(外部中断2)
//--------------------------------------------------------------------------------
void serial2_int() interrupt 2
{
uchar xdata *ptr;
uchar event;
uchar port;
port = CHANL2_PORT;
ptr = CommDevice[port].RAMAddress_Map; //读ISR 中断状态寄存器
event = *(ptr+ISR)&0x0f; //读最高优先级别的中断码
_nop_();
switch(event)
{
case EVENT_RXRDY: //接受数据到中断
case EVENT_RXRDY_TIMEOUT:
for(;*(ptr+LSR)&EVENT_LSR_RECEIVE;)
{
CommDevice[port].CommReceiveBuffer[CommDevice[port].CommReceive_Head] = *(ptr+RHR);
if(((CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer)!=CommDevice[port].CommReceive_Trail)
CommDevice[port].CommReceive_Head=(CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer;
}; //end for
break;
case EVENT_TXRDY: //发送数据中断
if(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head) //判断数据包是否发送完毕
{
for(event=0;(event<FIFO_SIZE)&&(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head);event++)
{
CommDevice[port].CommSend_Trail=(CommDevice[port].CommSend_Trail+1)%CommMaxSendBuffer;
*(ptr+THR) = CommDevice[port].CommSendBuffer[CommDevice[port].CommSend_Trail];
};//end for
CommDevice[port].Comm_Stu = SERIAL_STU_BUSY;
}else CommDevice[port].Comm_Stu = SERIAL_STU_FREE;
break;
};//end switch
}
//--------------------------------------------------------------------------------
// 外部扩展串行口3中断处理程序(外部中断6)
//--------------------------------------------------------------------------------
void serial3_int () interrupt 6
{
uchar xdata *ptr;
uchar event;
uchar port;
port = CHANL3_PORT;
ptr = CommDevice[port].RAMAddress_Map; // 读ISR 中断状态寄存器
event = *(ptr+ISR)&0x0f; // 读最高优先级别的中断码
_nop_();
switch(event)
{
case EVENT_RXRDY: // 接受数据到中断
case EVENT_RXRDY_TIMEOUT:
for(;*(ptr+LSR)&EVENT_LSR_RECEIVE;)
{
CommDevice[port].CommReceiveBuffer[CommDevice[port].CommReceive_Head] = *(ptr+RHR);
if(((CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer)!=CommDevice[port].CommReceive_Trail)
CommDevice[port].CommReceive_Head=(CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer;
}; //end for
break;
case EVENT_TXRDY: //发送数据中断
if(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head) //判断数据包是否发送完毕
{
for(event=0;(event<FIFO_SIZE)&&(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head);event++)
{
CommDevice[port].CommSend_Trail=(CommDevice[port].CommSend_Trail+1)%CommMaxSendBuffer;
*(ptr+THR) = CommDevice[port].CommSendBuffer[CommDevice[port].CommSend_Trail];
};//end for
CommDevice[port].Comm_Stu = SERIAL_STU_BUSY;
}else CommDevice[port].Comm_Stu = SERIAL_STU_FREE;
break;
};//end switch
}
//--------------------------------------------------------------------------------
// 外部扩展串行口4中断处理程序(外部中断7)
//--------------------------------------------------------------------------------
void serial4_int () interrupt 7
{
uchar xdata *ptr;
uchar event;
uchar port;
port = CHANL4_PORT;
ptr = CommDevice[port].RAMAddress_Map; // 读ISR 中断状态寄存器
event = *(ptr+ISR)&0x0f; // 读最高优先级别的中断码
_nop_();
switch(event)
{
case EVENT_RXRDY: // 接受数据到中断
case EVENT_RXRDY_TIMEOUT:
for(;*(ptr+LSR)&EVENT_LSR_RECEIVE;)
{
CommDevice[port].CommReceiveBuffer[CommDevice[port].CommReceive_Head] = *(ptr+RHR);
if(((CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer)!=CommDevice[port].CommReceive_Trail)
CommDevice[port].CommReceive_Head=(CommDevice[port].CommReceive_Head+1)%CommMaxReceiveBuffer;
}; //end for
break;
case EVENT_TXRDY: //发送数据中断
if(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head) //判断数据包是否发送完毕
{
for(event=0;(event<FIFO_SIZE)&&(CommDevice[port].CommSend_Trail!=CommDevice[port].CommSend_Head);event++)
{
CommDevice[port].CommSend_Trail=(CommDevice[port].CommSend_Trail+1)%CommMaxSendBuffer;
*(ptr+THR) = CommDevice[port].CommSendBuffer[CommDevice[port].CommSend_Trail];
};//end for
CommDevice[port].Comm_Stu = SERIAL_STU_BUSY;
}else CommDevice[port].Comm_Stu = SERIAL_STU_FREE;
break;
};//end switch
}
//--------------------------------------------------------------------------------

16V554 的测试代码

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原文地址：http://www.cnblogs.com/zym0805/p/5089359.html

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