小波变换子程序-Wavelet Transform Subroutine

此算法为最小二乘参数估计的递推算法。运行后得到辨识参数：a1= -1.4981, a2= 0.7038, b1= 1.0476, b2= 0.4704。-The algorithm for the recursive least squares parameter estimation algorithm. After operation to identify the parameters: a1 =-1.4981, a2 = 0.7038, b1 = 1.0476, b2 = 0.4704.

实现与HT7038的通讯，完成对7038的读写操作。(To achieve communication with HT7038, to complete the 7038 read and write operations.)

7038与stm32通过spi通讯读取寄存器数据(Communication between 7038 and stm32)