你好，我想使用lead off功能，目前是按照下面方式配置后，程序第一次运行可以读到0x19寄存器Lead off detected位有脱落指示，但是当程序循环运行时，就不提示脱落检测了，麻烦有没有lead off配置的例程代码提供下，我的配置代码如下：
HAL_Delay(10);
ecg_write_reg(0x00, 0x00);
HAL_Delay(10);
ecg_write_reg(0x06, 0x02);//0x00000010
ecg_write_reg(0x07, 0x07);//0x00000111
ecg_write_reg(0x08, 0xff);//0x11
ecg_write_reg(0x01, 0x11);//0x11
ecg_write_reg(0x0A, 0x03);
ecg_write_reg(0x0C, 0x03);
ecg_write_reg(0x12, 0x06);
ecg_write_reg(0x14, 0x36);
ecg_write_reg(0x21, 0x02);
ecg_write_reg(0x22, 0x02);
ecg_write_reg(0x23, 0x02);
ecg_write_reg(0x27, 0x08);
ecg_write_reg(0x2F, 0x10);
ecg_write_reg(0x00, 0x01);
