kopia lustrzana https://github.com/sq8vps/vp-digi
225 wiersze
5.0 KiB
C
225 wiersze
5.0 KiB
C
/*
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Copyright 2020-2023 Piotr Wilkon
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This file is part of VP-Digi.
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VP-Digi is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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VP-Digi 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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You should have received a copy of the GNU General Public License
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along with VP-Digi. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "terminal.h"
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#include "ax25.h"
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#include "common.h"
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#include <string.h>
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#include <systick.h>
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#include <uart.h>
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#include "digipeater.h"
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#include "kiss.h"
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Uart Uart1 = {.defaultMode = MODE_KISS}, Uart2 = {.defaultMode = MODE_KISS}, UartUsb= {.defaultMode = MODE_KISS};
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static void handleInterrupt(Uart *port)
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{
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if(UART_LL_CHECK_RX_NOT_EMPTY(port->port)) //byte received
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{
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UART_LL_CLEAR_RX_NOT_EMPTY(port->port);
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uint8_t data = port->port->DR;
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port->rxBuffer[port->rxBufferHead++] = data; //store it
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port->rxBufferHead %= UART_BUFFER_SIZE;
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KissParse(port, data);
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TermHandleSpecial(port);
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}
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if(UART_LL_CHECK_RX_IDLE(port->port)) //line is idle, end of data reception
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{
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UART_LL_GET_DATA(port->port); //reset idle flag by dummy read
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if(port->rxBufferHead != 0)
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{
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if(((port->rxBuffer[port->rxBufferHead - 1] == '\r') || (port->rxBuffer[port->rxBufferHead - 1] == '\n'))) //data ends with \r or \n, process as data
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{
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port->rxType = DATA_TERM;
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}
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}
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}
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if(UART_LL_CHECK_TX_EMPTY(port->port)) //TX buffer empty
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{
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if((port->txBufferHead != port->txBufferTail) || port->txBufferFull) //if there is anything to transmit
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{
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UART_LL_PUT_DATA(port->port, port->txBuffer[port->txBufferTail++]);
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port->txBufferTail %= UART_BUFFER_SIZE;
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port->txBufferFull = 0;
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}
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else //nothing more to be transmitted
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{
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UART_LL_DISABLE_TX_EMPTY_INTERRUPT(port->port);
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}
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}
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}
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void UART_LL_UART1_INTERUPT_HANDLER(void) __attribute__ ((interrupt));
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void UART_LL_UART1_INTERUPT_HANDLER(void)
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{
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handleInterrupt(&Uart1);
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}
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void UART_LL_UART2_INTERUPT_HANDLER(void) __attribute__ ((interrupt));
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void UART_LL_UART2_INTERUPT_HANDLER(void)
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{
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handleInterrupt(&Uart2);
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}
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void UartSendByte(Uart *port, uint8_t data)
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{
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if(!port->enabled)
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return;
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if(port->isUsb)
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{
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CDC_Transmit_FS(&data, 1);
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}
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else
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{
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while(port->txBufferFull)
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;
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port->txBuffer[port->txBufferHead++] = data;
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port->txBufferHead %= UART_BUFFER_SIZE;
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__disable_irq();
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if(port->txBufferHead == port->txBufferTail)
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port->txBufferFull = 1;
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if(0 == (UART_LL_CHECK_ENABLED_TX_EMPTY_INTERRUPT(port->port)))
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UART_LL_ENABLE_TX_EMPTY_INTERRUPT(port->port);
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__enable_irq();
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}
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}
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void UartSendString(Uart *port, void *data, uint16_t len)
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{
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if(0 == len)
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len = strlen((char*)data);
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for(uint16_t i = 0; i < len; i++)
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{
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UartSendByte(port, ((uint8_t*)data)[i]);
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}
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}
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static unsigned int findHighestPosition(unsigned int n)
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{
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unsigned int i = 1;
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while((i * 10) <= n)
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i *= 10;
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return i;
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}
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void UartSendNumber(Uart *port, int32_t n)
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{
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if(n < 0)
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UartSendByte(port, '-');
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n = abs(n);
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unsigned int position = findHighestPosition(n);
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while(position)
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{
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unsigned int number = n / position;
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UartSendByte(port, (number + 48));
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n -= (number * position);
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position /= 10;
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}
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}
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void UartInit(Uart *port, USART_TypeDef *uart, uint32_t baud)
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{
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port->port = uart;
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port->baudrate = baud;
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port->rxType = DATA_NOTHING;
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port->rxBufferHead = 0;
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port->txBufferHead = 0;
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port->txBufferTail = 0;
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port->txBufferFull = 0;
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if(port->defaultMode > MODE_MONITOR)
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port->defaultMode = MODE_KISS;
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port->mode = port->defaultMode;
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port->enabled = 0;
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port->kissBufferHead = 0;
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port->lastRxBufferHead = 0;
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memset((void*)port->rxBuffer, 0, sizeof(port->rxBuffer));
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memset((void*)port->txBuffer, 0, sizeof(port->txBuffer));
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memset((void*)port->kissBuffer, 0, sizeof(port->kissBuffer));
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}
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void UartConfig(Uart *port, uint8_t state)
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{
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if(port->port == UART_LL_UART1_STRUCTURE)
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{
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UART_LL_UART1_INITIALIZE_PERIPHERAL(port->baudrate);
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if(state)
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{
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UART_LL_ENABLE(port->port);
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}
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else
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{
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UART_LL_DISABLE(port->port);
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}
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NVIC_SetPriority(UART_LL_UART1_IRQ, 2);
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if(state)
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NVIC_EnableIRQ(UART_LL_UART1_IRQ);
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else
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NVIC_DisableIRQ(UART_LL_UART1_IRQ);
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port->enabled = state > 0;
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port->isUsb = 0;
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}
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else if(port->port == UART_LL_UART2_STRUCTURE)
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{
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UART_LL_UART2_INITIALIZE_PERIPHERAL(port->baudrate);
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if(state)
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{
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UART_LL_ENABLE(port->port);
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}
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else
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{
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UART_LL_DISABLE(port->port);
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}
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NVIC_SetPriority(UART_LL_UART2_IRQ, 2);
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if(state)
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NVIC_EnableIRQ(UART_LL_UART2_IRQ);
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else
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NVIC_DisableIRQ(UART_LL_UART2_IRQ);
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port->enabled = state > 0;
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port->isUsb = 0;
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}
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else
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{
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port->isUsb = 1;
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port->enabled = state > 0;
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}
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}
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void UartClearRx(Uart *port)
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{
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port->rxBufferHead = 0;
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port->rxType = DATA_NOTHING;
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}
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