When external interrupt happens the IST tells ISR and ISR informs application to read external data. Application reads external data and displays these data periodically.
The problem is when the external interrupt happens every one millisecond, the application must crash. After close the external interrupt source, the application still can`t response.
If the external interrupt happens every one second, the applicaton works well.
The problem is when the external interrupt happens every one millisecond, the application must crash. After close the external interrupt source, the application still can`t response.
If the external interrupt happens every one second, the applicaton works well.