ADS127L01将采集到的数据通过SPI与MCU通讯时出现如下问题：ADC.pdf
将ADS127L01的4脚通过R34接地，读出的数据是，
0,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,
1,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,
2,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00fffffe,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,0x00ffffff,
转成为十进制度
0,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,
1,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,16777215,
2,16777215,16777215,16777215,16777215,16777215,16777215,16777214,16777215,16777215,16777215,16777215,16777215,
将ADS127L01的4脚通过R34接2.5V(VREF)，读出的数据是，
0,0x007f677c,0x00737fff,0x007fff77,0x007f677c,0x006f7cff,0x007d9f73,0x007f7d9f,0x00777e4f,0x007f7f67,0x007f677f,0x004f7fbf,0x00677fdf,
1,0x007fff7d,0x007e4f7f,0x007fff77,0x001f7f7f,0x007d9f7f,0x007f7b3f,0x007f677c,0x0079ff7f,0x001f737f,0x006f7cff,0x007f777e,0x006f7c9f,
2,0x007fdf79,0x007fff7d,0x007f777e,0x007fff7d,0x003f677f,0x00677fff,0x007f677f,0x007f777e,0x007fbf73,0x007d9f7f,0x00677fff,0x007f7d9f,
转成为十进制度
0,8349564,7569407,8388471,8349564,7306495,8232819,8355231,7831119,8355687,8349567,5210047,6782943,
1,8388477,8277887,8388471,2064255,8232831,8354623,8349564,7995263,2061183,7306495,8353662,7306399,
2,8380281,8388477,8353662,8388477,4155263,6782975,8349567,8353662,8372083,8232831,6782975,8355231,输出数据波动很大，是错误数据。
