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Original question:

Data Flash Write causes Reset on UCD3138A - MFBALR and MFBAHR registers need word writes only

CCS/UCD3138A: fast interrupt sending wrong ov fault

Asal Shavandi
Prodigy 20 points
Part Number: UCD3138A

Tool/software: Code Composer Studio

Hello, 

currently my UCD3138A part and through UART it receives a command that should go erase the data flash and update the block, through debugging I understood that eFaultMux fast interrupt gets in place and sends a wrong OVP fault and it shuts down my main output. 

I am using CCS8.3 and my optimization level is at 2.

Here is my configuration for ACOMPB for OV fault:

FaultMuxRegs.ACOMPCTRL0.bit.ACOMP_B_THRESH = 114;
FaultMuxRegs.ACOMPCTRL0.bit.ACOMP_B_SEL = 0; 
FaultMuxRegs.ACOMPCTRL0.bit.ACOMP_B_POL = 1; 
FaultMuxRegs.DPWM0FLTABDET.bit.ACOMP_B_EN = 1;
FaultMuxRegs.DPWM1FLTABDET.bit.ACOMP_B_EN = 1;
FaultMuxRegs.ACOMPCTRL0.bit.ACOMP_B_INT_EN = 1;