TM4C1294NCPDT: It would be into FaultISR() when compared between float data.

user6092104

Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: IWR1642

Hi, TI teams,

I used the TM4C1294NCPDT MCU to process the Radar point cloud data from iwr1642 UART.

I turn off the Optimization level in CCS,

I take the breakpoint to debug my code, as below, the radar point cloud data is saved in ui8RadarPD[D_MAX_PACKAGE_LEN], (D_MAX_PACKAGE_LEN is 4k),

Then, I press F5 to run into SetPointData() function, as below, I filter the point cloud data when its doppler is less then 0,

when I press F5, the code runs into FaultISR(),

I do not know why? I have retried many times but it is the same.

Maybe it needs take some config in CCS?

Regards,

eric

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 191466 points

Hi,

There are two things for you to first check.

1. Did you enable the floating point support?

2. What is your stack size? I think the D_MAX_PACKAGE_LEN might have been to large and overflow the stack. Try to increase the stack size to a larger value. Will it make a difference? Another method is to reduce the D_MAX_PACKAGE_LEN to a smaller value to begin with. If you see a smaller value is running fine then it is due to the stack size.