ADS7953: Set to 12 channels. After several hours of operation, the values read back through SPI are all the values of channel 1

Set to 12 channels. After several hours of operation, the values read back through SPI are all the values of channel 1

The  external ad configuration is as follows

case 1:
st_ExtAdcCtlReg.all = 0x4200;
McbspbRegs.DXR1.all = st_ExtAdcCtlReg.all;
u16_ExADCFirstConfig=2;
break;
case 2:
st_ExtAdcCtlReg.all = 0x8000;
McbspbRegs.DXR1.all = st_ExtAdcCtlReg.all;
u16_ExADCFirstConfig=3;
break;
case 3:
st_ExtAdcCtlReg.all = 0x0FFF;
McbspbRegs.DXR1.all = st_ExtAdcCtlReg.all;
u16_ExADCFirstConfig=4;
break;
case 4:
st_ExtAdcCtlReg.all = 0x2C00;
McbspbRegs.DXR1.all = st_ExtAdcCtlReg.all;
u16_ExADCFirstConfig=5;
break;
case 5:
st_ExtAdcCtlReg.all = 0x2800;
McbspbRegs.DXR1.all = st_ExtAdcCtlReg.all;
u16_ExADCFirstConfig=6;
break;

Amy Luo：

您好，

您是使用的哪种模式？Manual mode, Auto-1 mode, Auto-2 mode？

工作期间供电电压是否稳定？是否发生了掉电复位？

代码中的 case1 至 case5是什么？

,

Jingnian Peng：

您好，使用的是Auto-1 mode  case1 至 case5是配置外部AD的过程，就是给外部AD依次写入0x4200 0x8000 0x0FFF 0x2C00 0x2800

,

Amy Luo：

感谢反馈！

0x4200是复位

0x8000是配置 Auto-1 Mode Program Register

0x2C00 0x2800都是配置Mode Control Register

0x0FFF是什么？

看配置没什么问题，

设备掉电后会工作在 manual mode channel 0，因此在此期间请检查设备是否发生过掉电或电压不稳的情况？