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76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
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*
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* The information contained herein is property of Nordic Semiconductor ASA.
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* Terms and conditions of usage are described in detail in NORDIC
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* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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*
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* Licensees are granted free, non-transferable use of the information. NO
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* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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* the file.
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*
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*/
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#include <string.h>
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#include <stdint.h>
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#include "app_error.h"
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#include "app_scheduler.h"
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#include "ble_conn.h"
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#include "ble_serialization.h"
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#include "ser_config.h"
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#include "ser_hal_transport.h"
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#include "ser_conn_event_encoder.h"
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void ser_conn_ble_event_encoder(void * p_event_data, uint16_t event_size)
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{
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if (NULL == p_event_data)
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{
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APP_ERROR_CHECK(NRF_ERROR_NULL);
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}
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UNUSED_PARAMETER(event_size);
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uint32_t err_code = NRF_SUCCESS;
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uint8_t * p_tx_buf = NULL;
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uint32_t tx_buf_len = 0;
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ble_evt_t * p_ble_evt = (ble_evt_t *)p_event_data;
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/* Allocate a memory buffer from HAL Transport layer for transmitting an event.
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* Loop until a buffer is available. */
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do
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{
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err_code = ser_hal_transport_tx_pkt_alloc(&p_tx_buf, (uint16_t *)&tx_buf_len);
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}
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while (err_code == NRF_ERROR_NO_MEM);
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APP_ERROR_CHECK(err_code);
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/* Create a new packet. */
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p_tx_buf[SER_PKT_TYPE_POS] = SER_PKT_TYPE_EVT;
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tx_buf_len -= SER_PKT_TYPE_SIZE;
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/* Pass a memory for an event (opcode + data) and encode it. */
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err_code = ble_event_enc(p_ble_evt, 0, &p_tx_buf[SER_PKT_OP_CODE_POS], &tx_buf_len);
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if (NRF_ERROR_NOT_SUPPORTED != err_code)
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{
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APP_ERROR_CHECK(err_code);
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tx_buf_len += SER_PKT_TYPE_SIZE;
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err_code = ser_hal_transport_tx_pkt_send(p_tx_buf, (uint16_t)tx_buf_len);
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APP_ERROR_CHECK(err_code);
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/* TX buffer is going to be freed automatically in the HAL Transport layer.
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* Scheduler must be paused because this function returns before a packet is physically sent
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* by transport layer. This can cause start processing of a next event from the application
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* scheduler queue. In result the next event reserves the TX buffer before the current
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* packet is sent. If in meantime a command arrives a command response cannot be sent in
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* result. Pausing the scheduler temporary prevents processing a next event. */
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app_sched_pause();
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}
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else
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{
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/* Event was NOT encoded, therefore the buffer is freed immediately. */
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err_code = ser_hal_transport_tx_pkt_free(p_tx_buf);
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APP_ERROR_CHECK(err_code);
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APP_ERROR_CHECK(SER_WARNING_CODE);
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}
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}
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