SPI通讯模式，图中adxl375的12脚SDO波形中有三角波，怎么回事？
下面是通过串口打印的数据：
x_value:0.29, y_value:0.20, z_value:2.45
x_value:0.39, y_value:-0.64, z_value:2.30
x_value:0.54, y_value:0.00, z_value:2.60
x_value:0.64, y_value:-0.15, z_value:2.45
x_value:0.44, y_value:0.39, z_value:2.40
x_value:0.49, y_value:-0.10, z_value:2.30
x_value:0.34, y_value:0.00, z_value:2.65
x_value:0.34, y_value:-0.24, z_value:2.35
x_value:0.44, y_value:0.10, z_value:2.50
x_value:0.10, y_value:-0.24, z_value:2.25
x_value:0.44, y_value:-0.15, z_value:2.35
x_value:0.29, y_value:0.10, z_value:2.60
x_value:0.64, y_value:-0.59, z_value:2.40
x_value:0.34, y_value:0.20, z_value:2.25
x_value:0.44, y_value:-0.20, z_value:2.30
请问我这个可能是那里的问题？
