From 6c114930eef133293856189a93f7ca7ca3751268 Mon Sep 17 00:00:00 2001 From: "Luke T. Shumaker" Date: Tue, 29 Oct 2024 20:20:07 -0600 Subject: wip host_alarmclock --- libhw/rp2040_include/libhw/rp2040_hwalarm.h | 55 ----------------------------- libhw/rp2040_include/libhw/rp2040_hwspi.h | 3 +- libhw/rp2040_include/libhw/rp2040_hwtimer.h | 26 ++++++++++++++ 3 files changed, 27 insertions(+), 57 deletions(-) delete mode 100644 libhw/rp2040_include/libhw/rp2040_hwalarm.h create mode 100644 libhw/rp2040_include/libhw/rp2040_hwtimer.h (limited to 'libhw/rp2040_include') diff --git a/libhw/rp2040_include/libhw/rp2040_hwalarm.h b/libhw/rp2040_include/libhw/rp2040_hwalarm.h deleted file mode 100644 index 3a7ae10..0000000 --- a/libhw/rp2040_include/libhw/rp2040_hwalarm.h +++ /dev/null @@ -1,55 +0,0 @@ -/* libhw/rp2040_hwalarm.h - Alarms for the RP2040 - * - * Copyright (C) 2024 Luke T. Shumaker - * SPDX-License-Identifier: AGPL-3.0-or-later - */ - -#ifndef _LIBHW_RP2040_HWALARM_H_ -#define _LIBHW_RP2040_HWALARM_H_ - -#include /* for bool */ -#include /* for uint{n}_t */ - -#include /* for BEGIN_PRIVATE, END_PRIVATE */ - -/** - * The RP2040 has one system "timer" (which we also use for - * ./rp2040_bootclock.c) with 4 alarm interrupts. - */ -enum rp2040_hwalarm_instance { - RP2040_HWALARM_0 = 0, - RP2040_HWALARM_1 = 1, - RP2040_HWALARM_2 = 2, - RP2040_HWALARM_3 = 3, - _RP2040_HWALARM_NUM, -}; - -struct rp2040_hwalarm_trigger; -struct rp2040_hwalarm_trigger { - BEGIN_PRIVATE(LIBHW_RP2040_HWALARM_H) - void *alarm; - struct rp2040_hwalarm_trigger *prev, *next; - - uint64_t fire_at_us; - void (*cb)(void *); - void *cb_arg; - END_PRIVATE(LIBHW_RP2040_HWALARM_H) -}; - -/** - * Returns true on error. - * - * fire_at_ns must be at most UINT32_MAX µs (72 minutes) in the future - * (or an error will be returned). - * - * If fire_at_ns is in the past, then it will fire immediately. - */ -bool rp2040_hwalarm_trigger_init(struct rp2040_hwalarm_trigger *self, - enum rp2040_hwalarm_instance alarm_num, - uint64_t fire_at_ns, - void (*cb)(void *), - void *cb_arg); - -void rp2040_hwalarm_trigger_cancel(struct rp2040_hwalarm_trigger *self); - -#endif /* _LIBHW_RP2040_HWALARM_H_ */ diff --git a/libhw/rp2040_include/libhw/rp2040_hwspi.h b/libhw/rp2040_include/libhw/rp2040_hwspi.h index 8d90dbb..19fb4ba 100644 --- a/libhw/rp2040_include/libhw/rp2040_hwspi.h +++ b/libhw/rp2040_include/libhw/rp2040_hwspi.h @@ -1,5 +1,4 @@ -/* libhw/rp2040_hwspi.h - `implements_spi` implementation for the RP2040's - * ARM Primecell SSP (PL022) (header file) +/* libhw/rp2040_hwspi.h - implementation for the RP2040's ARM Primecell SSP (PL022) * * Copyright (C) 2024 Luke T. Shumaker * SPDX-License-Identifier: AGPL-3.0-or-later diff --git a/libhw/rp2040_include/libhw/rp2040_hwtimer.h b/libhw/rp2040_include/libhw/rp2040_hwtimer.h new file mode 100644 index 0000000..0885edf --- /dev/null +++ b/libhw/rp2040_include/libhw/rp2040_hwtimer.h @@ -0,0 +1,26 @@ +/* libhw/rp2040_hwtimer.h - implementation for the RP2040's hardware timer + * + * Copyright (C) 2024 Luke T. Shumaker + * SPDX-License-Identifier: AGPL-3.0-or-later + */ + +#ifndef _LIBHW_RP2040_HWALARM_H_ +#define _LIBHW_RP2040_HWALARM_H_ + +#include + +/** + * The RP2040 has one system "timer" (which we also use for + * ./rp2040_bootclock.c) with 4 alarm interrupts. + */ +enum rp2040_hwalarm_instance { + RP2040_HWALARM_0 = 0, + RP2040_HWALARM_1 = 1, + RP2040_HWALARM_2 = 2, + RP2040_HWALARM_3 = 3, + _RP2040_HWALARM_NUM, +}; + +implements_alarmclock *rp2040_hwtimer(enum rp2040_hwalarm_instance alarm_num); + +#endif /* _LIBHW_RP2040_HWALARM_H_ */ -- cgit v1.2.3-2-g168b