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Re: DSPIC33F 进入串口初始化程序程序就自动跳出
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新會員
 
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谢谢了哦，就是这个原因
后来关掉TX中断就好了 不过我现在又碰到一个A/D的问题 再开个贴吧 再次感谢您
發表於: 2007/10/13 16:42
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Re: DSPIC33F 进入串口初始化程序程序就自动跳出
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中級會員
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提供一點意見給你參考...
請修改程序如以下: void COM_init() { U1MODEbits.STSEL = 0; // 1-stop bit U1MODEbits.PDSEL = 0; // No Parity, 8-data bits U1MODEbits.ABAUD = 0; // Autobaud Disabled U1BRG = BRGVAL; // BAUD Rate Setting for 9600 // STEP 1: // Configure UART for DMA transfers U1STAbits.UTXISEL0 = 0; // Interrupt after one Tx character is transmitted U1STAbits.UTXISEL1 = 0; U1STAbits.URXISEL = 0; // Interrupt after one RX character is received // STEP 2: // Enable UART Rx and Tx U1MODEbits.UARTEN = 1; // Enable UART1 U1STAbits.UTXEN = 1; // Enable UART1 Tx IPC2bits.U1RXIP=7; //Interrupt is priority 7 (highest priority interrupt) //先清除中斷旗號, 再致能中斷 IFS0bits.U1TXIF =0; // clear intrrupt TX IF IFS0bits.U1RXIF =0; // clear intrrupt RX IF //先不致能 TX 中斷, 因為 TX 為空(可發送) 即進入中斷 //這裡並無資料要立刻傳送 IEC0bits.U1TXIE =0; // Disable uart1 tx intrrupt IEC0bits.U1RXIE =1; // Enable uart1 tx intrrupt // IEC4bits.U1EIE = 0; } ****************************************** 大概是進入了 TX 的中斷了, 在要 發送資料時再適時 致能 TX 中斷吧!
發表於: 2007/10/4 9:46
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DSPIC33F 进入串口初始化程序程序就自动跳出
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新會員
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我用的是DSPIC33F, 用ICD2调试
调试其他程序时都能正确运行 但我加进了串口初始化程序后，程序就会自动跳出，运行完毕 不再向下执行 void COM_init() { U1MODEbits.STSEL = 0; // 1-stop bit U1MODEbits.PDSEL = 0; // No Parity, 8-data bits U1MODEbits.ABAUD = 0; // Autobaud Disabled U1BRG = BRGVAL; // BAUD Rate Setting for 9600 // STEP 1: // Configure UART for DMA transfers U1STAbits.UTXISEL0 = 0; // Interrupt after one Tx character is transmitted U1STAbits.UTXISEL1 = 0; U1STAbits.URXISEL = 0; // Interrupt after one RX character is received // STEP 2: // Enable UART Rx and Tx U1MODEbits.UARTEN = 1; // Enable UART1 U1STAbits.UTXEN = 1; // Enable UART1 Tx IPC2bits.U1RXIP=7; //Interrupt is priority 7 (highest priority interrupt) IEC0bits.U1TXIE =1; // Enable uart1 tx intrrupt IEC0bits.U1RXIE =1; // Enable uart1 tx intrrupt IFS0bits.U1TXIF =0; // clear intrrupt TX IF IFS0bits.U1RXIF =0; // clear intrrupt RX IF // IEC4bits.U1EIE = 0; } 这是我的串口初始化程序有什么不妥之处吗 希望各位高手指教一下
發表於: 2007/10/3 19:53
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