Merge branch 'lukeshu/9p-read-iovec'

1 files changed, 25 insertions, 0 deletions

diff --git a/libhw_cr/rp2040_include/libhw/rp2040_hwtimer.h b/libhw_cr/rp2040_include/libhw/rp2040_hwtimer.h
new file mode 100644
index 0000000..40e4172
--- /dev/null
+++ b/libhw_cr/rp2040_include/libhw/rp2040_hwtimer.h
@@ -0,0 +1,25 @@
+/* libhw/rp2040_hwtimer.h - <libhw/generic/alarmclock.h> implementation for the RP2040's hardware timer
+ *
+ * Copyright (C) 2024-2025  Luke T. Shumaker <lukeshu@lukeshu.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+#ifndef _LIBHW_RP2040_HWTIMER_H_
+#define _LIBHW_RP2040_HWTIMER_H_
+
+#include <libhw/generic/alarmclock.h>
+
+/**
+ * The RP2040 has one system "timer" 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,
+};
+
+lo_interface alarmclock rp2040_hwtimer(enum rp2040_hwalarm_instance alarm_num);
+
+#endif /* _LIBHW_RP2040_HWTIMER_H_ */