DA轉(zhuǎn)換輸出錯誤
用STC單片機(jī)+DA芯片TM8211生成50Hz正弦波，正弦表是uint code sin[256]={ 0x8000,0x8324,0x8648,0x896a,0x8c8c,0x8fab,0x92c8,0x95e2, 0x98f9,0x9c0b,0x9f1a,0xa223,0xa528,0xa826,0xab1f,0xae11, 0xb0fb,0xb3df,0xb6ba,0xb98c,0xbc56,0xbf17,0xc1ce,0xc47a, 0xc71c,0xc9b4,0xcc3f,0xcebf,0xd133,0xd39b,0xd5f5,0xd842, 0xda82,0xdcb3,0xded7,0xe0eb,0xe2f1,0xe4e8,0xe6cf,0xe8a6, 0xea6d,0xec23,0xedc9,0xef5e,0xf0e2,0xf254,0xf3b5,0xf504, 0xf641,0xf76b,0xf884,0xf989,0xfa7c,0xfb5c,0xfc29,0xfce3, 0xfd89,0xfe1d,0xfe9c,0xff09,0xff61,0xffa6,0xffd8,0xfff5, 0xffff,0xfff5,0xffd8,0xffa6,0xff61,0xff09,0xfe9c,0xfe1d, 0xfd89,0xfce3,0xfc29,0xfb5c,0xfa7c,0xf989,0xf884,0xf76b, 0xf641,0xf504,0xf3b5,0xf254,0xf0e2,0xef5e,0xedc9,0xec23, 0xea6d,0xe8a6,0xe6cf,0xe4e8,0xe2f1,0xe0eb,0xded7,0xdcb3, 0xda82,0xd842,0xd5f5,0xd39b,0xd133,0xcebf,0xcc3f,0xc9b4, 0xc71c,0xc47a,0xc1ce,0xbf17,0xbc56,0xb98c,0xb6ba,0xb3df, 0xb0fb,0xae11,0xab1f,0xa826,0xa528,0xa223,0x9f1a,0x9c0b, 0x98f9,0x95e2,0x92c8,0x8fab,0x8c8c,0x896a,0x8648,0x8324, 0x8000,0x7cdc,0x79b8,0x7696,0x7374,0x7055,0x6d38,0x6a1e, 0x6707,0x63f5,0x60e6,0x5ddd,0x5ad8,0x57da,0x54e1,0x51ef, 0x4f05,0x4c21,0x4946,0x4674,0x43aa,0x40e9,0x3e32,0x3b86, 0x38e4,0x364c,0x33c1,0x3141,0x2ecd,0x2c65,0x2a0b,0x27be, 0x257e,0x234d,0x2129,0x1f15,0x1d0f,0x1b18,0x1931,0x175a, 0x1593,0x13dd,0x1237,0x10a2,0x0f1e,0x0dac,0x0c4b,0x0afc,0x09bf,0x0895,0x077c,0x0677,0x0584,0x04a4,0x03d7,0x031d,0x0277,0x01e3,0x0164,0x00f7,0x009f,0x005a,0x0028,0x000b,0x0001,0x000b,0x0028,0x005a,0x009f,0x00f7,0x0164,0x01e3,0x0277,0x031d,0x03d7,0x04a4,0x0584,0x0677,0x077c,0x0895,0x09bf,0x0afc,0x0c4b,0x0dac,0x0f1e,0x10a2,0x1237,0x13dd,0x1593,0x175a,0x1931,0x1b18,0x1d0f,0x1f15,0x2129,0x234d,0x257e,0x27be,0x2a0b,0x2c65,0x2ecd,0x3141,0x33c1,0x364c,0x38e4,0x3b86,0x3e32,0x40e9,0x43aa,0x4674,0x4946,0x4c21,0x4f05,0x51ef,0x54e1,0x57da,0x5ad8,0x5ddd,0x60e6,0x63f5,0x6707,0x6a1e,0x6d38,0x7055,0x7374,0x7696,0x79b8,0x7cdc}，輸出波形變形如附件，請問問題出在哪里？
