Files
epd42/components/serialization/connectivity/ser_conn_cmd_decoder.c
Shuanglei Tao f353d23368 Initial commit
2024-11-11 15:35:36 +08:00

98 lines
3.1 KiB
C

/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
*
* The information contained herein is property of Nordic Semiconductor ASA.
* Terms and conditions of usage are described in detail in NORDIC
* SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
*
* Licensees are granted free, non-transferable use of the information. NO
* WARRANTY of ANY KIND is provided. This heading must NOT be removed from
* the file.
*
*/
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "app_error.h"
#include "ble_serialization.h"
#include "ser_config.h"
#include "conn_mw.h"
#include "ser_hal_transport.h"
#include "ser_conn_cmd_decoder.h"
uint32_t ser_conn_command_process(uint8_t * p_command, uint16_t command_len)
{
SER_ASSERT_NOT_NULL(p_command);
SER_ASSERT_LENGTH_LEQ(SER_OP_CODE_SIZE, command_len);
uint32_t err_code = NRF_SUCCESS;
uint8_t * p_tx_buf = NULL;
uint32_t tx_buf_len = 0;
uint8_t opcode = p_command[SER_CMD_OP_CODE_POS];
uint32_t index = 0;
/* Allocate a memory buffer from HAL Transport layer for transmitting the Command Response.
* Loop until a buffer is available. */
do
{
err_code = ser_hal_transport_tx_pkt_alloc(&p_tx_buf, (uint16_t *)&tx_buf_len);
}
while (NRF_ERROR_NO_MEM == err_code);
if (NRF_SUCCESS == err_code)
{
/* Create a new response packet. */
p_tx_buf[SER_PKT_TYPE_POS] = SER_PKT_TYPE_RESP;
tx_buf_len -= SER_PKT_TYPE_SIZE;
/* Decode a request, pass a memory for a response command (opcode + data) and encode it. */
err_code = conn_mw_handler
(p_command, command_len, &p_tx_buf[SER_PKT_OP_CODE_POS], &tx_buf_len);
/* Command decoder not found. */
if (NRF_ERROR_NOT_SUPPORTED == err_code)
{
APP_ERROR_CHECK(SER_WARNING_CODE);
err_code = op_status_enc
(opcode, NRF_ERROR_NOT_SUPPORTED,
&p_tx_buf[SER_PKT_OP_CODE_POS], &tx_buf_len, &index);
if (NRF_SUCCESS == err_code)
{
tx_buf_len += SER_PKT_TYPE_SIZE;
err_code = ser_hal_transport_tx_pkt_send(p_tx_buf, (uint16_t)tx_buf_len);
/* TX buffer is going to be freed automatically in the HAL Transport layer. */
if (NRF_SUCCESS != err_code)
{
err_code = NRF_ERROR_INTERNAL;
}
}
else
{
err_code = NRF_ERROR_INTERNAL;
}
}
else if (NRF_SUCCESS == err_code) /* Send a response. */
{
tx_buf_len += SER_PKT_TYPE_SIZE;
err_code = ser_hal_transport_tx_pkt_send(p_tx_buf, (uint16_t)tx_buf_len);
/* TX buffer is going to be freed automatically in the HAL Transport layer. */
if (NRF_SUCCESS != err_code)
{
err_code = NRF_ERROR_INTERNAL;
}
}
else
{
err_code = NRF_ERROR_INTERNAL;
}
}
else
{
err_code = NRF_ERROR_INTERNAL;
}
return err_code;
}