生成一个 10bit的 sin函数表 720项
const INT32U sintab[]={
0x0200,0x0204,0x0209,0x020d,0x0212,0x0216,0x021b,0x021f,0x0224,0x0228,0x022d,0x0231,0x0235,0x023a,0x023e,0x0243,0x0247,0x024c,0x0250,0x0254,0x0259,0x025d,0x0262,0x0266,0x026a,0x026f,0x0273,0x0277,0x027c,0x0