Graham Sanderson a540ca905a Add new async_context abstraction and refactor cyw43_arch to use it (#1177) ... * Extract all poll/threadsafe_background/freertos from cyw43_arch into new abstraction async_context: * provides support for asynchronous events (timers/IRQ notifications) to be handled in a safe context. * now guarantees all callbacks happen on a single core. * is reusable by multiple different libraries (stdio_usb can now be ported to this but hasn't been yet). * supports multiple independent instances (independent instances will not block each other). * cyw43_arch libraries cleaned up to use the new abstraction. Note each distinct cyw43_arch type is now a very thin layer that creates the right type of context and adds cyw43_driver and lwip support as appropriate. Additionally, * Add new pico_time and hardware_alarm APIs * Add from_us_since_boot() * Add alarm_pool_create_with_unused_hardware_alarm() * Add alarm_pool_add_alarm_at_force_in_context() * Add hardware_alarm_claim_unused() * Add hardware_alarm_force_irq() * Added panic_compact() and some minor comment cleanup; moved FIRST_USER_IRQ define to platform_defs.h		2023-01-24 12:01:24 -06:00
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include/hardware	user_irqs should be claimed globally not per core, since vector tabes are shared (#1183)	2023-01-24 08:58:01 -06:00
CMakeLists.txt	Initial Release	2021-01-20 10:44:27 -06:00
irq_handler_chain.S	Make sure stack is 8 byte aligned in shared IRQ handlers (#971)	2022-08-17 10:25:23 -05:00
irq.c	Add new async_context abstraction and refactor cyw43_arch to use it (#1177)	2023-01-24 12:01:24 -06:00