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Questions - interrupt-handling

C undeclared(first use in this function) error

I am writing a C program on NIOS II SBT for Eclplise to deal with Pushbuttons interrupts on a DE2 board, not that it matters but I keep running into this error 'keys_irq' undeclared(first use in this ...
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Jesus Meza

c

interrupt-handling

Votes: 0

Answers: 1

Latest Answer

The function keys_int_init is calling a reference to keys_irq. Since keys_irq is not yet defined, the compiler doesn't know what the function is. In order to avoid this, you can add something called ...
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Sir Archibald Humphrey

How do I access data variables between autogenerated Interrupts.c file?

I have recently started working with Simplicity Studio to develop a program for a 8051 based development board. Via the configurator, I enabled Interrupts, which creates a Interrupts.c file. This file...
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Vishesh Varma

c

embedded

interrupt-handling

8051

simplicity-studio

Votes: 0

Answers: 1

Latest Answer

In the Peripherals tab look for interrrupts. There usually is a setting "Generate Interrupt Functions". Disable this and include your own IRQ module to the sources.
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Jens

Traps in bash with exec in a script

I want to accomplish two goals in a bash script: redirect output of a running script to a file and display it to the user at the same time execute two "cleanup" traps on exit and Ctrl-C So...
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LetMeSOThat4U

bash

shell

scripting

interrupt-handling

Votes: 0

Answers: 0

Linux: Interrupt handling: Who saves the context of interrupted process (some software (interrupt handler) or hardware (CPU itself))?

When an interrupt comes to CPU then who saves the context of the interrupted process (some software (interrupt handler) or hardware (CPU itself))? As far as I understand, software (interrupt handler) ...
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user18307826

linux

process

cpu

interrupt

interrupt-handling

Votes: 0

Answers: 1

Latest Answer

Both the CPU itself and the kernel are responsible for saving parts of the current userspace context. This is mostly an x86_64/amd64 specific answer, and the source for interrupt calls can be found ma...
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beeselmane

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