我用的是usb转串口的小模块,网上3块多钱,连线是
sbit RXB = P3^0; //UART TX/RX port
sbit TXB = P3^1;
//
sbit ad9850_w_clk =P3^2;//接ad9850的w_clk脚/PIN7
sbit ad9850_fq_up =P3^3;//接ad9850的fq_up脚/PIN8
sbit ad9850_bit_data =P3^4;//接ad9850的D7脚/PIN25
sbit ad9850_rest =P3^5;//接ad9850的rest脚/PIN12