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| 1 | #include "uio-irq.h" // https://pastebin.com/w42Ti0Hz | |
| 2 | ||
| 3 | - | // for level-triggered interrupts: |
| 3 | + | // blocking, for level-triggered interrupts: |
| 4 | int fd = open( path, O_RDWR | O_CLOEXEC ); | |
| 5 | setup_irq(); | |
| 6 | loop {
| |
| 7 | uio_irqenable( fd ); | |
| 8 | uio_wfi( fd ); | |
| 9 | handle_irq(); | |
| 10 | } | |
| 11 | ||
| 12 | - | // for edge-triggered interrupts: |
| 12 | + | // blocking, for edge-triggered interrupts: |
| 13 | int fd = open( path, O_RDWR | O_CLOEXEC ); | |
| 14 | setup_irq(); | |
| 15 | loop {
| |
| 16 | uio_irqenable( fd ); | |
| 17 | handle_irq(); | |
| 18 | uio_wfi( fd ); | |
| 19 | } | |
| 20 | ||
| 21 | ||
| 22 | // non-blocking, for level-triggered interrupts: | |
| 23 | int fd = open( path, O_RDWR | O_CLOEXEC | O_NONBLOCK ); | |
| 24 | setup_irq(); | |
| 25 | uio_irqenable( fd ); | |
| 26 | when fd readable {
| |
| 27 | uio_wfi( fd ); | |
| 28 | handle_irq(); | |
| 29 | uio_irqenable( fd ); | |
| 30 | } | |
| 31 | ||
| 32 | // non-blocking, for edge-triggered interrupts: | |
| 33 | int fd = open( path, O_RDWR | O_CLOEXEC | O_NONBLOCK ); | |
| 34 | setup_irq(); | |
| 35 | uio_irqenable( fd ); | |
| 36 | handle_irq(); | |
| 37 | when fd readable {
| |
| 38 | uio_wfi( fd ); | |
| 39 | uio_irqenable( fd ); | |
| 40 | handle_irq(); | |
| 41 | } |
