CCS/MSP432P401R: Definition of ICPR0 bits

Steven Hunter

Part Number: MSP432P401R

Tool/software: Code Composer Studio

I have an undefined interrupt triggering the Default_Handler, but I cannot find any documentation on which bit is which in ICPR0.

over 7 years ago

0 Bob Landers over 7 years ago

TI__Expert 8510 points

Steven,

The definition of the ICPR0/1 registers can be found in the MSP432 Technical Reference manual, section 2.4.3.7

The individual bit descriptions can be found in Table 6-39 of the MSP432P401R datasheet.

The ICPR0 (NVIC Clear PENDing) register covers interrupts 0-31

The ICPR` register covers interrups 31-63.

-Bob L.

0 Steven Hunter over 7 years ago in reply to Bob Landers

Intellectual 420 points

That just specifies where the register is. It doesn't define which bit is which. I had already searched that document without success.

0 Bob Landers over 7 years ago in reply to Steven Hunter

TI__Expert 8510 points

Did you look at Table 6-39 (Referenced in the 2nd sentence)? This is the list of NVIC interrupts. ICPR0 has interrupts 0-31. The table gives the names & source for each of those interrupts/bits.
-Bob L.

0 Steven Hunter over 7 years ago in reply to Bob Landers

Intellectual 420 points

We must be looking at different documents. What I see is:
2.4.3.7 ICPR0 Register (Offset = 280h) [reset = 00000000h]
ICPR0 is shown in Figure 2-26 and described in Table 2-32.
Irq 0 to 31 Clear Pending Register. Use the Interrupt Clear-Pending Registers to clear pending interrupts
and determine which interrupts are currently pending.

Table 2-32 just shows that there is a 32-bit register, not the name and source for each.

0 Bob Landers over 7 years ago in reply to Steven Hunter

TI__Expert 8510 points

Steven,
I believe the answer you're looking for is in the 2nd sentence of my original post , which mentions Table 6-39 of the MSP432P401 datasheet. Each CLRPEND bit in the ICPR0 register corresponds to an interrupt in the NVIC. Can you confirm that you are reading the datasheet and not the Technical reference manual. (I only include the link for that for completeness sake- the answer to your question is in the datasheet)
-Bob L.

0 Steven Hunter over 7 years ago in reply to Bob Landers

Intellectual 420 points

Thank you. I found the table once I looked in the right document.

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CCS/MSP432P401R: Definition of ICPR0 bits