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https://github.com/espressif/openthread.git
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136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
/*
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* Copyright (c) 2023, The OpenThread Authors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* This file implements the RTT implementation of the uart API.
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*/
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#include <stdint.h>
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#include <openthread-core-config.h>
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#include <openthread/config.h>
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#include <utils/code_utils.h>
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#include <openthread/error.h>
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#if OPENTHREAD_UART_RTT_ENABLE
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#include "SEGGER_RTT.h"
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#include "uart.h"
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#include "uart_rtt.h"
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static bool sUartInitialized = false;
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static bool sUartPendingUp = false;
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#if UART_RTT_BUFFER_INDEX != 0
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static uint8_t sUartUpBuffer[UART_RTT_UP_BUFFER_SIZE];
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static uint8_t sUartDownBuffer[UART_RTT_DOWN_BUFFER_SIZE];
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#endif
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otError otPlatUartEnable(void)
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{
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otError error = OT_ERROR_FAILED;
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#if UART_RTT_BUFFER_INDEX != 0
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int resUp = SEGGER_RTT_ConfigUpBuffer(UART_RTT_BUFFER_INDEX, UART_RTT_BUFFER_NAME, sUartUpBuffer,
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UART_RTT_UP_BUFFER_SIZE, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
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int resDown = SEGGER_RTT_ConfigDownBuffer(UART_RTT_BUFFER_INDEX, UART_RTT_BUFFER_NAME, sUartDownBuffer,
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UART_RTT_DOWN_BUFFER_SIZE, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
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#else
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int resUp = SEGGER_RTT_SetFlagsUpBuffer(UART_RTT_BUFFER_INDEX, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
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int resDown = SEGGER_RTT_SetFlagsDownBuffer(UART_RTT_BUFFER_INDEX, SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL);
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#endif
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otEXPECT(resUp >= 0 && resDown >= 0);
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sUartInitialized = true;
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sUartPendingUp = false;
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error = OT_ERROR_NONE;
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exit:
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return error;
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}
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otError otPlatUartDisable(void)
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{
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sUartInitialized = false;
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return OT_ERROR_NONE;
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}
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otError otPlatUartSend(const uint8_t *aBuf, uint16_t aBufLength)
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{
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otError error = OT_ERROR_NONE;
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otEXPECT_ACTION(SEGGER_RTT_Write(UART_RTT_BUFFER_INDEX, aBuf, aBufLength) != 0, error = OT_ERROR_FAILED);
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sUartPendingUp = true;
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exit:
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return error;
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}
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otError otPlatUartFlush(void)
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{
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otError error = OT_ERROR_NONE;
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otEXPECT_ACTION(sUartPendingUp, error = OT_ERROR_INVALID_STATE);
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while (SEGGER_RTT_HasDataUp(UART_RTT_BUFFER_INDEX) != 0)
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{
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}
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exit:
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return error;
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}
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void utilsUartRttProcess(void)
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{
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uint8_t buf[UART_RTT_READ_BUFFER_SIZE];
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unsigned count;
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otEXPECT(sUartInitialized);
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if (sUartPendingUp && SEGGER_RTT_HasDataUp(UART_RTT_BUFFER_INDEX) == 0)
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{
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sUartPendingUp = false;
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otPlatUartSendDone();
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}
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count = SEGGER_RTT_Read(UART_RTT_BUFFER_INDEX, &buf, sizeof(buf));
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if (count > 0)
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{
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otPlatUartReceived((const uint8_t *)&buf, count);
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}
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exit:
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return;
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}
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#endif // OPENTHREAD_UART_RTT_ENABLE
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