143 lines
4.5 KiB
C++
143 lines
4.5 KiB
C++
/*
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* Authors (alphabetical order)
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* - Andre Bernet <bernet.andre@gmail.com>
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* - Andreas Weitl
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* - Bertrand Songis <bsongis@gmail.com>
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* - Bryan J. Rentoul (Gruvin) <gruvin@gmail.com>
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* - Cameron Weeks <th9xer@gmail.com>
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* - Erez Raviv
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* - Gabriel Birkus
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* - Jean-Pierre Parisy
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* - Karl Szmutny
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* - Michael Blandford
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* - Michal Hlavinka
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* - Pat Mackenzie
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* - Philip Moss
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* - Rob Thomson
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* - Romolo Manfredini <romolo.manfredini@gmail.com>
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* - Thomas Husterer
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*
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* opentx is based on code named
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* gruvin9x by Bryan J. Rentoul: http://code.google.com/p/gruvin9x/,
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* er9x by Erez Raviv: http://code.google.com/p/er9x/,
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* and the original (and ongoing) project by
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* Thomas Husterer, th9x: http://code.google.com/p/th9x/
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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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*/
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#include "../../opentx.h"
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extern Fifo<512> telemetryFifo;
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void telemetryPortInit(uint32_t baudrate)
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{
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if (baudrate == 0) {
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USART_DeInit(SPORT_USART);
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return;
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}
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USART_InitTypeDef USART_InitStructure;
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIO_SPORT, ENABLE);
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GPIO_PinAFConfig(GPIO_PIN_SPORT_TXRX, GPIO_PinSource_SPORT_RX, GPIO_AF_SPORT);
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GPIO_PinAFConfig(GPIO_PIN_SPORT_TXRX, GPIO_PinSource_SPORT_TX, GPIO_AF_SPORT);
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GPIO_InitStructure.GPIO_Pin = PIN_SPORT_TX | PIN_SPORT_RX;
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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_50MHz;
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GPIO_Init(GPIO_PIN_SPORT_TXRX, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = PIN_SPORT_ON;
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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_NOPULL;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIO_PIN_SPORT_ON, &GPIO_InitStructure);
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GPIO_ResetBits(GPIO_PIN_SPORT_ON, PIN_SPORT_ON);
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPORT, ENABLE);
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USART_InitStructure.USART_BaudRate = baudrate;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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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(SPORT_USART, &USART_InitStructure);
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USART_Cmd(SPORT_USART, ENABLE);
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USART_ITConfig(SPORT_USART, USART_IT_RXNE, ENABLE);
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NVIC_SetPriority(SPORT_IRQn, 6);
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NVIC_EnableIRQ(SPORT_IRQn);
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}
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struct SportTxBuffer
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{
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uint8_t *ptr;
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uint32_t count;
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} sportTxBuffer;
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void sportSendBuffer(uint8_t *buffer, uint32_t count)
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{
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sportTxBuffer.ptr = buffer ;
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sportTxBuffer.count = count ;
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GPIO_PIN_SPORT_ON->BSRRL = PIN_SPORT_ON ; // output enable
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SPORT_USART->CR1 &= ~USART_CR1_RE ; // turn off receiver
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SPORT_USART->CR1 |= USART_CR1_TXEIE ;
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}
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#if !defined(SIMU)
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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 SPORT_IRQHandler()
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{
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uint32_t status;
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uint8_t data;
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status = SPORT_USART->SR;
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if (status & USART_SR_TXE) {
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if (sportTxBuffer.count) {
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SPORT_USART->DR = *sportTxBuffer.ptr++;
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if (--sportTxBuffer.count == 0) {
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SPORT_USART->CR1 &= ~USART_CR1_TXEIE; // stop Tx interrupt
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SPORT_USART->CR1 |= USART_CR1_TCIE; // enable complete interrupt
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}
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}
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}
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if ((status & USART_SR_TC) && (SPORT_USART->CR1 & USART_CR1_TCIE)) {
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SPORT_USART->CR1 &= ~USART_CR1_TCIE ; // stop Complete interrupt
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GPIO_PIN_SPORT_ON->BSRRH = PIN_SPORT_ON ; // output disable
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SPORT_USART->CR1 |= USART_CR1_RE ;
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while (status & (USART_FLAG_RXNE)) {
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status = SPORT_USART->DR;
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status = SPORT_USART->SR ;
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}
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}
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while (status & (USART_FLAG_RXNE | USART_FLAG_ERRORS)) {
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data = SPORT_USART->DR;
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if (!(status & USART_FLAG_ERRORS)) {
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telemetryFifo.push(data);
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}
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status = SPORT_USART->SR;
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}
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}
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#endif
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