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疑問?!不能動作
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新會員
 
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小弟現在寫了一個測試檔 可是都沒反應 請求哪邊出錯
還有 我觀看U2TXREG、U2RXREG裡面都沒有數值 動作說明:TX傳送了 Ox1B, 'I' 的指令給RFID，RFID要回傳卡號給 PIC的RX，判段RX有值會啟動LED全亮 #include <p24FJ128GA010.h> void UARTInit(void); int main(void) { AD1PCFG = 0xFFFF; UARTInit(); //Initialize the UART converter while(1) { char TxBuffer[2]; TxBuffer[0]=0x1B; TxBuffer[1]='I'; while(U2STAbits.UTXBF); U2TXREG = TxBuffer; while(!U2STAbits.URXDA); LATA = 0xffff; } } void UARTInit(void) { TRISA = 0xff00; TRISFbits.TRISF5 = 0; //RF5/U2TX為輸出 TRISFbits.TRISF4 = 1; //RF4/U2RX為輸入 U2BRG = 0x0c; //0x0c(19200); U2MODE = 0x8800; U2STA = 0x0400; }
發表於: 2008/8/10 17:16
Edited by linklove99 on 2008年08月10日 17:59:50
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