mc33771C exit the Diag of ctopenfault but cell voltage like not exit diag

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mc33771C exit the Diag of ctopenfault but cell voltage like not exit diag

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Wan
Contributor II

Hello NXP Engineers:
I encountered a problem when using the MC33771C chip to collect the voltage of a single cell:
When I performed normal voltage sampling after the CtOpenFalut diagnostics exit, I found that there was always an occasional occurrence in the continuous sampling for several hours like the sampled data did not close the diagnostics. As shown below

Wan_1-1719928218009.png

The software is executed as follows:

StopCycleMeasu,
IntoDaigMode,
Conf_SysDiag_CFG_register_CT_ODD,
waitting_0,
// waitting_1,
Diag_ADC_CFG_register_CT_ODD,
Diag_ReadCtVoltage_CT_ODD,
clear_SysDiag_CFG_register_All,
Conf_SysDiag_CFG_register_CT_EVEN,
waitting_2,
Diag_ADC_CFG_register_CT_EVEN,
Diag_ReadCtVoltage_CT_EVEN,
clear_SysDiag_CFG_register_All_2,
clear_SysDiag_CFG_register_All_4,
QuitDaigMode,

Enter the normal mode and measure the Cell Voltage.(Occasionally the voltage looks like the picture above)

 

 

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