关于28035 eCAN的问题

新手上路

Rank: 1

UID: 114293

1^#

打印

字体大小: tT

reporter发表于 2014-1-2 13:49 | 只看该作者

关于28035 eCAN的问题

include, 程序

我现在在做28035的eCAN的通讯，想用中断进行接收数据，但是貌似是怎么也进不去中断，各位大侠对于28035的eCAN的中断有什么需要特别注意的地方给点建议，我的程序如下

#include &quot;DSP28x_Project.h&quot;&nbsp; &nbsp;&nbsp;&nbsp;// Device Headerfile and Examples Include File
#include &quot;DSP2803x_Device.h&quot;
void delay_loop1();
void CAN_GpioInit();
void ECAN_Init();
Uint32 Rec_H;
Uint32 Rec_L;
void main()
{
&nbsp; &nbsp; &nbsp; &nbsp; InitSysCtrl();
&nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; DINT;
&nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; IER = 0x0000;
&nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; IFR = 0x0000;
&nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; InitPieCtrl();
&nbsp; &nbsp; InitPieVectTable();

&nbsp; &nbsp; Rec_H=0;
&nbsp; &nbsp; Rec_L=0;
&nbsp; &nbsp; CAN_GpioInit();
&nbsp; &nbsp; ECAN_Init();

&nbsp; &nbsp; PieCtrlRegs.PIEIER9.bit.INTx5=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//使能PIE中断

&nbsp; &nbsp; IER|=M_INT9;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //使能CPU中断
&nbsp; &nbsp; EINT;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//开全局中断
&nbsp; &nbsp; ERTM;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//开实时中断

&nbsp; &nbsp; for(;;)
&nbsp; &nbsp; {
&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp; &nbsp; }

}

void CAN_GpioInit()
{
&nbsp; &nbsp;EALLOW;
&nbsp; &nbsp;GpioCtrlRegs.GPAPUD.bit.GPIO30=0;
&nbsp; &nbsp;GpioCtrlRegs.GPAPUD.bit.GPIO31=0;
&nbsp; &nbsp;GpioCtrlRegs.GPAMUX2.bit.GPIO30=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //设置Gpio30工作在Ecan的模式
&nbsp; &nbsp;GpioCtrlRegs.GPAMUX2.bit.GPIO31=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //设置Gpio31工作在ECAN的模式
&nbsp; &nbsp;GpioCtrlRegs.GPAMUX2.bit.GPIO29=0;
&nbsp; &nbsp;GpioCtrlRegs.GPADIR.bit.GPIO29=1;
&nbsp; &nbsp;EDIS;
&nbsp; &nbsp;GpioDataRegs.GPADAT.bit.GPIO29=1;
}

void ECAN_Init()
{
&nbsp; &nbsp; &nbsp; &nbsp; struct ECAN_REGS ECanaShadow;
&nbsp; &nbsp; &nbsp; &nbsp; EALLOW;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANTIOC.all=ECanaRegs.CANTIOC.all;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANTIOC.bit.TXFUNC=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //设置CANTx为ECAN的发送端口
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANTIOC.all=ECanaShadow.CANTIOC.all;

&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANRIOC.all=ECanaRegs.CANRIOC.all;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANRIOC.bit.RXFUNC=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //设置CANRx为ECAN的接收端口
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANRIOC.all=ECanaShadow.CANRIOC.all;

&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANMC.all=ECanaRegs.CANMC.all;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANMC.bit.STM=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//0则是工作在正常的模式，1则是自测模式
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANMC.bit.SCB=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//选择工作在ECAN模式下
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANMC.all=ECanaShadow.CANMC.all;
&nbsp; &nbsp; &nbsp; &nbsp; EDIS;

&nbsp; &nbsp; &nbsp; &nbsp; ECanaMboxes.MBOX1.MSGCTRL.all=0x00000000;&nbsp; &nbsp;&nbsp; &nbsp;//初始化邮箱0的控制区域为零，
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANTA.all=0xffffffff;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //清除所有的发送标志位
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANRMP.all=0xffffffff;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//清除所有的接收标志位
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANGIF0.all = 0xFFFFFFFF;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;/* Clear all interrupt flag bits */
&nbsp; &nbsp; ECanaRegs.CANGIF1.all = 0xFFFFFFFF;

&nbsp; &nbsp; &nbsp; &nbsp; EALLOW;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANMC.all=ECanaRegs.CANMC.all;
&nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANMC.bit.CCR=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//请求改变配置信息即时钟参数的配置
&nbsp; &nbsp; &nbsp; &nbsp; ECanaRegs.CANMC.all=ECanaShadow.CANMC.all;
&nbsp; &nbsp; &nbsp; &nbsp; EDIS;
&nbsp; &nbsp; do
&nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ECanaShadow.CANES.all=ECanaRegs.CANES.all;&nbsp; &nbsp;//这里一定要注意必须要有这一句，否则的话不会去判断位CCE是否置位
&nbsp; &nbsp; }
&nbsp; &nbsp; while(ECanaShadow.CANES.bit.CCE!=1);&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//只有CCE置位以后才能对CANBTC进行设置
&nbsp; &nbsp; EALLOW;
&nbsp; &nbsp; ECanaRegs.CANBTC.all=0x00000000;
&nbsp; &nbsp; ECanaShadow.CANBTC.all=ECanaRegs.CANBTC.all;
&nbsp; &nbsp; ECanaShadow.CANBTC.bit.BRPREG=2;
&nbsp; &nbsp; ECanaShadow.CANBTC.bit.TSEG1REG=6;
&nbsp; &nbsp; ECanaShadow.CANBTC.bit.TSEG2REG=1;
&nbsp; &nbsp; ECanaShadow.CANBTC.bit.SAM=1;
&nbsp; &nbsp; ECanaRegs.CANBTC.all=ECanaShadow.CANBTC.all;

&nbsp; &nbsp; ECanaShadow.CANMC.all=ECanaRegs.CANMC.all;
&nbsp; &nbsp; ECanaShadow.CANMC.bit.CCR=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //请求Cpu正常工作
&nbsp; &nbsp; ECanaRegs.CANMC.all=ECanaShadow.CANMC.all;
&nbsp; &nbsp; EDIS;

&nbsp; &nbsp; do
&nbsp; &nbsp; {
&nbsp; &nbsp;&nbsp; &nbsp;ECanaShadow.CANES.all=ECanaRegs.CANES.all;
&nbsp; &nbsp; }
&nbsp; &nbsp; while(ECanaShadow.CANES.bit.CCE!=0);&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//等待CCE被清零

&nbsp; &nbsp; ECanaRegs.CANME.all=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//屏蔽所有的邮箱
&nbsp; &nbsp; ECanaMboxes.MBOX1.MSGID.all = 0X9555AAA1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//设置接收邮箱1的ID

&nbsp; &nbsp; ECanaShadow.CANMD.all=ECanaRegs.CANMD.all;
&nbsp; &nbsp; ECanaShadow.CANMD.bit.MD1=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//设置邮箱1作为接收邮箱
&nbsp; &nbsp; ECanaRegs.CANMD.all=ECanaShadow.CANMD.all;

&nbsp; &nbsp; //设置邮箱1的接收的数据的格式
&nbsp; &nbsp; ECanaMboxes.MBOX1.MSGCTRL.bit.DLC=8;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //邮箱1接收的数据长度为8个字节
&nbsp; &nbsp; ECanaMboxes.MBOX1.MSGCTRL.bit.RTR=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //没有远方应答帧被请求
&nbsp; &nbsp; ECanaMboxes.MBOX1.MSGCTRL.bit.TPL=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //优先级设置为0

&nbsp; &nbsp; //ECanaMboxes.MBOX0.MDL.all=0x01234567;//向邮箱0的RAM区域写数据
&nbsp; &nbsp; //ECanaMboxes.MBOX0.MDH.all=0x76543210;

&nbsp; &nbsp; ECanaShadow.CANME.all=ECanaRegs.CANME.all;
&nbsp; &nbsp; ECanaShadow.CANME.bit.ME1=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//使能接收邮箱1
&nbsp; &nbsp; ECanaRegs.CANME.all=ECanaShadow.CANME.all;

&nbsp; &nbsp; EALLOW;
&nbsp; &nbsp; ECanaRegs.CANMIM.all=0xffffffff;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //使能全部邮箱中断
&nbsp; &nbsp; ECanaRegs.CANMIL.all=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //邮箱中断发生在中断线0上
&nbsp; &nbsp; ECanaRegs.CANGIF0.all=0xffffffff;
&nbsp; &nbsp; ECanaRegs.CANGIF1.all=0xffffffff;
&nbsp; &nbsp; ECanaRegs.CANGIM.bit.I0EN=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//ECANI0EN中断线使能
&nbsp; &nbsp; ECanaRegs.CANGIM.bit.I1EN=1;
&nbsp; &nbsp; ECanaRegs.CANGIM.bit.GIL=0;
&nbsp; &nbsp; EDIS;
}

interrupt void ECAN0INTA_ISR(void)
{
&nbsp; &nbsp;while(ECanaRegs.CANRMP.all!=0x00000002);
&nbsp; &nbsp;ECanaRegs.CANRMP.all=0x00000002;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//复位接收请求寄存器

&nbsp; &nbsp;GpioDataRegs.GPADAT.bit.GPIO29=0;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;//中断进入指示
&nbsp; &nbsp;delay_loop1();&nbsp; &nbsp;&nbsp; &nbsp;
&nbsp; &nbsp;GpioDataRegs.GPADAT.bit.GPIO29=1;

&nbsp; &nbsp;Rec_L=ECanaMboxes.MBOX1.MDL.all;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;//接收数据
&nbsp; &nbsp;Rec_H=ECanaMboxes.MBOX1.MDH.all;

&nbsp; &nbsp

ieCtrlRegs.PIEACK.bit.ACK9=1;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; //中断应答
&nbsp; &nbsp;EINT;
}

void delay_loop1()
{
&nbsp; &nbsp; short&nbsp; &nbsp;&nbsp; &nbsp;i,j;
&nbsp; &nbsp; for (i = 0; i &lt; 1000; i++)
&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;for(j=0;j&lt;1000;j++);
}

收藏分享评分

回复引用

订阅 TOP

返回列表