Arm Community
Site
Search
User
Site
Search
User
Groups
Arm Research
DesignStart
Education Hub
Graphics and Gaming
High Performance Computing
Innovation
Multimedia
Open Source Software and Platforms
Physical
Processors
Security
System
Software Tools
TrustZone for Armv8-M
中文社区
Blog
Announcements
Artificial Intelligence
Automotive
Healthcare
HPC
Infrastructure
Innovation
Internet of Things
Machine Learning
Mobile
Smart Homes
Wearables
Forums
All developer forums
IP Product forums
Tool & Software forums
Support
Open a support case
Documentation
Downloads
Training
Arm Approved program
Arm Design Reviews
Community Help
More
Cancel
Developer Community
Tools and Software
Software Tools
Jump...
Cancel
Software Tools
Arm Development Studio forum
How does Cortex-M3 core capture the interrupt signal
Tools, Software and IDEs blog
Forums
Videos & Files
Help
Jump...
Cancel
New
Replies
1 reply
Subscribers
126 subscribers
Views
2095 views
Users
0 members are here
Related
How does Cortex-M3 core capture the interrupt signal
Offline
Jade Tsien
over 7 years ago
Note: This was originally posted on 31st March 2013 at http://forums.arm.com
Hi,
I'm using the Cortex-M3 and handling the interrupts of it. It seems that if I set ISR entry to the right interrupt vector number, the core shall do the right ISR when there is an interrupt signal occure.
But how can the core recogize that which of the interrupt vector number shall the interrupt signal be corresponded to?
For example, if I design a uart for the cortex-m3 to I/O, there occures a uart interrupt, then how does the core distinguish that the interrupt signal is from uart not spi or other peripheral?
NVIC just set the interrupt priority and enable/disable some interrupts, or can NVIC relate the uart interrupt signal to
[size=2]IRQ#16, if IRQ#16 is the entry of uart ISR?[/size]
[size=2]Well, another question is that I'v set the interrupt vector table in file 'exceptions.c', but when I read the content in [/size]
[size=2]mem 0x00000008, I get 0 not the function address of NMI_Handler. How can I write the ISR entry to the right interrupt vector?[/size]
[size=2]
[/size]
[size=2]Hoping for your answers sincerely![/size]
More questions in this forum
By title
By date
By reply count
By view count
By most asked
By votes
By quality
Descending
Ascending
All recent questions
Unread questions
Questions you've participated in
Questions you've asked
Unanswered questions
Answered questions
Questions with suggested answers
Questions with no replies
Not Answered
Forum FAQs
0
ARM Community
4135
views
0
replies
Started
2 months ago
by
Annie Cracknell
Answered
Can't get a 30-day Gold Edition evalution license
0
283
views
6
replies
Latest
2 days ago
by
Leger
Answered
Failure to get an evaluation license with error Unable to execute API call /api/v1/connect
0
6827
views
5
replies
Latest
6 days ago
by
Ronan Synnott
Answered
error encountered when try to connect FVP
0
3846
views
18
replies
Latest
9 days ago
by
MattB
Suggested Answer
ARM DStudio can't detect Juno CPU core via DStream
0
209
views
2
replies
Latest
11 days ago
by
QiangHuang
>
View all questions in Arm Development Studio forum