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author | Aditya Gaddam <adityagaddam@gmail.com> | 2012-08-31 14:19:57 -0400 |
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committer | Aditya Gaddam <adityagaddam@gmail.com> | 2012-08-31 14:19:57 -0400 |
commit | 6b2700e2b1a03b7e0191f3dd9b34f8c51eea3c84 (patch) | |
tree | 5693873124e4ac1f4a9c311f859fe6bce0f64d24 /wirish/ext_interrupts.cpp | |
parent | e98633a041cfc9d5ba9122951aad65dcc4e33012 (diff) | |
download | librambutan-6b2700e2b1a03b7e0191f3dd9b34f8c51eea3c84.tar.gz librambutan-6b2700e2b1a03b7e0191f3dd9b34f8c51eea3c84.zip |
"Added ability to set callbacks for interrupts that get an argument. This argument can be the instance that needs to handle the interrupt, or just a random argument you might find useful later. Suggestions from mbolivar and iperry from pull53 on libmaple were taken into account.
Signed-off-by: Aditya Gaddam <adityagaddam@gmail.com>"
Diffstat (limited to 'wirish/ext_interrupts.cpp')
-rw-r--r-- | wirish/ext_interrupts.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/wirish/ext_interrupts.cpp b/wirish/ext_interrupts.cpp index a3e61fd..f72efbf 100644 --- a/wirish/ext_interrupts.cpp +++ b/wirish/ext_interrupts.cpp @@ -60,6 +60,34 @@ void attachInterrupt(uint8 pin, voidFuncPtr handler, ExtIntTriggerMode mode) { } /** + * @brief Registers an interrupt handler on a pin. + * + * @param pin Pin number + * @param handler Static class member function to run upon external interrupt + * trigger. The handler should take 1 argument and return void + * @param arg Argument that the handler will be passed when it's called. One + * use of this is to pass the specific instance of the class that + * will handle the interrupt. + * @param mode Type of transition to trigger on, e.g. falling, rising, etc. + * + * @sideeffect Registers a handler + * @see detachInterrupt() + */ +void attachInterrupt(uint8 pin, voidFuncPtr handler, void *arg, ExtIntTriggerMode mode) { + if (pin >= BOARD_NR_GPIO_PINS || !handler) { + return; + } + + exti_trigger_mode outMode = exti_out_mode(mode); + + exti_attach_callback((exti_num)(PIN_MAP[pin].gpio_bit), + gpio_exti_port(PIN_MAP[pin].gpio_device), + handler, + arg, + outMode); +} + +/** * @brief Disable any external interrupt attached to a pin. * @param pin Pin number to detach any interrupt from. */ |