circuitpython/ports/nrf/common-hal/protomatter/Protomatter.c

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2020-04-01 12:57:52 -04:00
/*
* 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"
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#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);
}