195 lines
6.5 KiB
C++
Executable File
195 lines
6.5 KiB
C++
Executable File
/*
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* Copyright (C) OpenTX
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*
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* Based on code named
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "opentx.h"
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ModuleFifo intmoduleFifo;
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#if !defined(INTMODULE_DMA_STREAM)
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uint8_t * intmoduleTxBufferData;
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uint8_t intmoduleTxBufferRemaining;
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#endif
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void intmoduleStop()
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{
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GPIO_ResetBits(INTMODULE_PWR_GPIO, INTMODULE_PWR_GPIO_PIN);
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#if defined(INTMODULE_DMA_STREAM)
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INTMODULE_DMA_STREAM->CR &= ~DMA_SxCR_EN; // Disable DMA
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#endif
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = INTMODULE_TX_GPIO_PIN | INTMODULE_RX_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_Init(INTMODULE_GPIO, &GPIO_InitStructure);
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USART_DeInit(INTMODULE_USART);
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GPIO_ResetBits(INTMODULE_GPIO, INTMODULE_TX_GPIO_PIN | INTMODULE_RX_GPIO_PIN);
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}
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void intmodulePxx1SerialStart()
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{
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intmoduleSerialStart(INTMODULE_PXX1_SERIAL_BAUDRATE, false, USART_Parity_No, USART_StopBits_1, USART_WordLength_8b);
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}
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void intmoduleSerialStart(uint32_t baudrate, uint8_t rxEnable, uint16_t parity, uint16_t stopBits, uint16_t wordLength)
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{
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INTERNAL_MODULE_ON();
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NVIC_InitTypeDef NVIC_InitStructure;
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#if defined(INTMODULE_DMA_STREAM)
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NVIC_InitStructure.NVIC_IRQChannel = INTMODULE_DMA_STREAM_IRQ;
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#else
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NVIC_InitStructure.NVIC_IRQChannel = INTMODULE_USART_IRQn;
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#endif
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; /* Not used as 4 bits are used for the pre-emption priority. */;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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GPIO_PinAFConfig(INTMODULE_GPIO, INTMODULE_GPIO_PinSource_TX, INTMODULE_GPIO_AF);
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GPIO_PinAFConfig(INTMODULE_GPIO, INTMODULE_GPIO_PinSource_RX, INTMODULE_GPIO_AF);
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = INTMODULE_TX_GPIO_PIN | INTMODULE_RX_GPIO_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_Init(INTMODULE_GPIO, &GPIO_InitStructure);
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USART_DeInit(INTMODULE_USART);
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USART_InitTypeDef USART_InitStructure;
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USART_InitStructure.USART_BaudRate = baudrate;
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USART_InitStructure.USART_Parity = parity;
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USART_InitStructure.USART_StopBits = stopBits;
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USART_InitStructure.USART_WordLength = wordLength;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
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USART_Init(INTMODULE_USART, &USART_InitStructure);
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USART_Cmd(INTMODULE_USART, ENABLE);
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if (rxEnable) {
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intmoduleFifo.clear();
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USART_ITConfig(INTMODULE_USART, USART_IT_RXNE, ENABLE);
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NVIC_SetPriority(INTMODULE_USART_IRQn, 6);
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NVIC_EnableIRQ(INTMODULE_USART_IRQn);
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}
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}
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#define USART_FLAG_ERRORS (USART_FLAG_ORE | USART_FLAG_NE | USART_FLAG_FE | USART_FLAG_PE)
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extern "C" void INTMODULE_USART_IRQHandler(void)
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{
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#if !defined(INTMODULE_DMA_STREAM)
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// Send
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if (USART_GetITStatus(INTMODULE_USART, USART_IT_TXE) != RESET) {
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if (intmoduleTxBufferRemaining) {
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USART_SendData(INTMODULE_USART, intmoduleTxBufferData[0]);
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intmoduleTxBufferData++;
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intmoduleTxBufferRemaining--;
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}
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else {
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USART_ITConfig(INTMODULE_USART, USART_IT_TXE, DISABLE);
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}
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}
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#endif
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// Receive
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uint32_t status = INTMODULE_USART->SR;
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while (status & (USART_FLAG_RXNE | USART_FLAG_ERRORS)) {
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uint8_t data = INTMODULE_USART->DR;
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if (status & USART_FLAG_ERRORS) {
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intmoduleFifo.errors++;
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}
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else {
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intmoduleFifo.push(data);
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}
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status = INTMODULE_USART->SR;
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}
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}
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void intmoduleSendByte(uint8_t byte)
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{
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while (!(INTMODULE_USART->SR & USART_SR_TXE));
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USART_SendData(INTMODULE_USART, byte);
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}
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void intmoduleSendBuffer(const uint8_t * data, uint8_t size)
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{
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if (size == 0)
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return;
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#if defined(INTMODULE_DMA_STREAM)
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if (!DMA_GetITStatus(INTMODULE_DMA_STREAM, INTMODULE_DMA_FLAG_TC))
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return;;
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DMA_InitTypeDef DMA_InitStructure;
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DMA_DeInit(INTMODULE_DMA_STREAM);
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DMA_InitStructure.DMA_Channel = INTMODULE_DMA_CHANNEL;
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DMA_InitStructure.DMA_PeripheralBaseAddr = CONVERT_PTR_UINT(&INTMODULE_USART->DR);
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DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
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DMA_InitStructure.DMA_Memory0BaseAddr = CONVERT_PTR_UINT(data);
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DMA_InitStructure.DMA_BufferSize = size;
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DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
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DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
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DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
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DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
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DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
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DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
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DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
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DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
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DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
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DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
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DMA_Init(INTMODULE_DMA_STREAM, &DMA_InitStructure);
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DMA_Cmd(INTMODULE_DMA_STREAM, ENABLE);
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USART_DMACmd(INTMODULE_USART, USART_DMAReq_Tx, ENABLE);
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#else
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intmoduleTxBufferData = (uint8_t *)data;
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intmoduleTxBufferRemaining = size;
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USART_ITConfig(INTMODULE_USART, USART_IT_TXE, ENABLE);
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#endif
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}
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void intmoduleSendNextFrame()
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{
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switch (moduleState[INTERNAL_MODULE].protocol) {
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#if defined(PXX2)
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case PROTOCOL_CHANNELS_PXX2_HIGHSPEED:
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intmoduleSendBuffer(intmodulePulsesData.pxx2.getData(), intmodulePulsesData.pxx2.getSize());
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break;
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#endif
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#if defined(PXX1)
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case PROTOCOL_CHANNELS_PXX1_SERIAL:
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intmoduleSendBuffer(intmodulePulsesData.pxx_uart.getData(), intmodulePulsesData.pxx_uart.getSize());
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break;
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#endif
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#if defined(INTERNAL_MODULE_MULTI)
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case PROTOCOL_CHANNELS_MULTIMODULE:
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intmoduleSendBuffer(intmodulePulsesData.multi.getData(), intmodulePulsesData.multi.getSize());
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break;
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#endif
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}
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}
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