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dsPIC30f5011 CAN module的設定?
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: 2022/1/11 15:08
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事實上我只想做單純傳送接收,當下達C1TX0CONbits.TXREQ = 1;命令之後,C1INTF=0x05a0,我查C1INTF暫存器發現分別是TXWAR,EWARN,IVRIF及ERRIF旗標動作了,而且之後我再下達C1TX0CONbits.TXREQ = 1;就沒有作用了,請問這是怎麼回事?以下是有關CAN1的設定 #define FCY 40000000 //40MHz #define BITRATE 1000000 // 1Mbps #define NTQ 20 // Number of Tq cycles which will make the //CAN Bit Timing . #define BRP_VAL ((FCY/(2*NTQ*BITRATE))-1) C1CTRLbits.CANCKS = 1; C1CFG1bits.SJW=00; C1CFG1bits.BRP = BRP_VAL; C1CFG2 = 0x06F4; C1INTF = 0; IFS1bits.C1IF = 0; C1INTE = 0x00FF; IEC1bits.C1IE = 1; C1RX0CON = C1RX1CON = 0x0000; C1RXM0SID = C1RXM1SID = 0x1FFD; C1RXM0EIDH = C1RXM1EIDH = 0x0FFF; C1RXM0EIDL = C1RXM1EIDL = 0xFC00; C1RXF0SID = 0x0AA8; C1TX0CON = 0x0003; C1TX0SID = 0x50A8; C1TX0DLC = 0x01C0; out_c1tx0b1=1023; out_c1tx0b2=1034; out_c1tx0b3=1045; out_c1tx0b4=1056; C1TX0B1 = out_c1tx0b1;//1023;//OutData0[0]; C1TX0B2 = out_c1tx0b2;//1034;//OutData0[1]; C1TX0B3 = out_c1tx0b3;//1045;//OutData0[2]; C1TX0B4 = out_c1tx0b4;//1056;//OutData0[3]; C1CTRLbits.REQOP = 0;
發表於: 2009/2/3 15:24
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