76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Artur Pacholec
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include "ble_drv.h"
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#include "ble_gatts.h"
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#include "nrf_soc.h"
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#include "py/runtime.h"
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#include "common-hal/bleio/__init__.h"
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#include "common-hal/bleio/CharacteristicBuffer.h"
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STATIC void characteristic_buffer_on_ble_evt(ble_evt_t *ble_evt, void *param) {
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bleio_characteristic_buffer_obj_t *self = (bleio_characteristic_buffer_obj_t *) param;
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switch (ble_evt->header.evt_id) {
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case BLE_GATTS_EVT_WRITE: {
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ble_gatts_evt_write_t *evt_write = &ble_evt->evt.gatts_evt.params.write;
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// Event handle must match the handle for my characteristic.
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if (evt_write->handle == self->characteristic->handle) {
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// Push all the data onto the ring buffer.
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for (size_t i = 0; i < evt_write->len; i++) {
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ringbuf_put(&self->ringbuf, evt_write->data[i]);
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}
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break;
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}
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}
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}
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}
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// Assumes that buffer_size has been validated before call.
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void common_hal_bleio_characteristic_buffer_construct(bleio_characteristic_buffer_obj_t *self, bleio_characteristic_obj_t *characteristic, size_t buffer_size) {
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self->characteristic = characteristic;
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// This is a macro.
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ringbuf_alloc(&self->ringbuf, buffer_size);
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ble_drv_add_event_handler(characteristic_buffer_on_ble_evt, self);
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}
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// Returns a uint8_t byte value, or -1 if no data is available.
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int common_hal_bleio_characteristic_buffer_read(bleio_characteristic_buffer_obj_t *self) {
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return ringbuf_get(&self->ringbuf);
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}
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void common_hal_bleio_characteristic_buffer_deinit(bleio_characteristic_buffer_obj_t *self) {
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ble_drv_remove_event_handler(characteristic_buffer_on_ble_evt, self);
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}
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