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F2834x - enabling multiple CEVTx capture interrupt events on a single ECAPxINT ?

Brad L
Intellectual 1245 points

C2000 team, 

Can you clarify if having multiple interrupt events simultaneously enable (CEVT1, CEVT2, CEVT3, CEVT4, CNTOVF, CTR=PRD, CTR=CMP) to the eCAPx module is supported? 

http://focus.ti.com/lit/ug/sprug79/sprug79.pdf  - section I am referring to is located section 4.6, on page 15.

 

There is a vague warning the indicates you should not do this: "One of these events can be selected as the interrupt source (from the eCAPx module) going to the PIE." However from Figure 8. Interrupts in eCAP Module it doesn't appear that anything is preventing this configuration from working. 

Note, I have a customer who is attempting this and getting erratic results. "The interrupt fires, resets, and re-fires correctly, when only one interrupt trigger is selected (CEVT1 or CEVT2). I only start to get trouble when I have both CEVT1 and CEVT2 enabled. CEVT1 triggers as expected, but CEVT2 triggers intermittently. "

 

Any clarification would be appreciated.