1 files changed, 66 insertions, 0 deletions
diff --git a/ports/nrf/common-hal/_protomatter/Protomatter.c b/ports/nrf/common-hal/_protomatter/Protomatter.c
new file mode 100644
index 000000000..b6e55bbd4
--- /dev/null
+++ b/ports/nrf/common-hal/_protomatter/Protomatter.c
@@ -0,0 +1,66 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Jeff Epler for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stddef.h>
+
+#include "common-hal/_protomatter/Protomatter.h"
+
+#include "peripherals/nrf/timers.h"
+
+extern void _PM_IRQ_HANDLER(void);
+
+void *common_hal_protomatter_timer_allocate() {
+    nrfx_timer_t *timer = nrf_peripherals_allocate_timer_or_throw();
+    nrf_peripherals_timer_never_reset(timer);
+    return timer->p_reg;
+}
+
+
+static void protomatter_event_handler(nrf_timer_event_t event_type, void *p_context) {
+    _PM_IRQ_HANDLER();
+}
+
+void common_hal_protomatter_timer_enable(void* ptr) {
+    nrfx_timer_t *timer = nrf_peripherals_timer_from_reg(ptr);
+    static const nrfx_timer_config_t timer_config = {
+        .frequency = NRF_TIMER_FREQ_16MHz,
+        .mode = NRF_TIMER_MODE_TIMER,
+        .bit_width = NRF_TIMER_BIT_WIDTH_16,
+        .interrupt_priority = NRFX_TIMER_DEFAULT_CONFIG_IRQ_PRIORITY,
+        .p_context = NULL,
+    };
+    nrfx_timer_init(timer, &timer_config, &protomatter_event_handler);
+}
+
+void common_hal_protomatter_timer_disable(void* ptr) {
+    nrfx_timer_t *timer = nrf_peripherals_timer_from_reg(ptr);
+    nrfx_timer_uninit(timer);
+}
+
+void common_hal_protomatter_timer_free(void* ptr) {
+    nrfx_timer_t *timer = nrf_peripherals_timer_from_reg(ptr);
+    nrf_peripherals_free_timer(timer);
+}