#include "Usart.h"
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#include <string.h>
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#include <stdio.h>
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//Êý¾Ý·¢ËͶÓÁбäÁ¿
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EUART_Frame m_EUART_TxFrames[EUART_TX_FRM_SIZE]; //Êý¾Ý·¢ËÍÖ¡¶ÓÁÐ
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volatile int8_t m_EUART_TxFrm_Tail = 0; //Êý¾Ý·¢ËÍÖ¡¶ÓÁÐβָÕë
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volatile int8_t m_EUART_TxFrm_Head = 0; //Êý¾Ý·¢ËÍÖ¡¶ÓÁÐÍ·Ö¸Õë
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volatile int8_t m_EUART_TxFrm_FreeFrmLen = 0; //Êý¾Ý·¢ËÍÖ¡¶ÓÁÐÊ£ÓàÖ¡Êý
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//DMAÊý¾Ý½ÓÊÕ»º´æ
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uint8_t m_EUART_DMA_RXBuf[EUART_RX_BUF_SIZE]; //DMAÊý¾Ý½ÓÊÕ»º´æ
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volatile int32_t m_EUART_DMA_RXPtr = 0; //µ±Ç°Êý¾ÝµØÖ·
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//±êÖ¾±äÁ¿
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volatile uint8_t m_bEUARTPushingFrms = 0; //ÕýÔÚÍù·¢ËͶÓÁдæÊý¾Ý
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volatile uint8_t m_bEUARTCheckingSend = 0; //ÕýÔÚÈ·ÈÏÊý¾Ý·¢ËÍ
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volatile uint8_t m_bEUARTCheckingRec = 0; //ÕýÔÚÈ·ÈϽÓÊÕÊý¾Ý
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volatile uint8_t m_bEUARTTxEn = 0; //ʹÄÜ·¢ËÍ
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void (*Usart1ParseDataCallback)(uint8_t);
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void Usart1InitVariables(void)
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{
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m_EUART_TxFrm_FreeFrmLen = EUART_TX_FRM_SIZE-1;
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}
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//UART DMAµÄÅäÖÃ
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void UART_DMAConfiguration(void)
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{
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DMA_InitTypeDef DMA_InitStructure;
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
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//UARTµÄDMAÊý¾Ý½ÓÊÕ³õʼ»¯
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DMA_DeInit(EUART_RX_DMA_CH);
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DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)( &(EXT_UART->DR)); //ÍâÉèÊý¾Ý¼Ä´æÆ÷
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DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)m_EUART_DMA_RXBuf; //Êý¾ÝBuf
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DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //ÍâÉè×÷Ô´Í·
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DMA_InitStructure.DMA_BufferSize = EUART_RX_BUF_SIZE; //Buf´óС
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DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //ÍâÉèµØÖ·²»Ôö¼Ó
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DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //ÄÚ´æµØÖ·Ôö¼Ó
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DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //×Ö½Ú
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DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //×Ö½Ú£¨×¢ÒâÓëÉÏÒ»¸ö±äÁ¿Ãû³Æ²»Í¬£¡£¡£©
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DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //Ñ»·Ä£Ê½
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DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; //ÓÅÏȼ¶
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DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //·ÇÄÚ´æµ½ÄÚ´æ
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DMA_Init(EUART_RX_DMA_CH, &DMA_InitStructure);
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USART_DMACmd(EXT_UART, USART_DMAReq_Rx, ENABLE);
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DMA_Cmd(EUART_RX_DMA_CH, ENABLE);
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#ifdef EXUART_USE_TXDMA
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//UARTµÄDMAÊý¾Ý·¢Ëͳõʼ»¯
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DMA_DeInit(EUART_TX_DMA_CH);
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DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(EXT_UART->DR)); //ÍâÉèÊý¾Ý¼Ä´æÆ÷
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DMA_InitStructure.DMA_MemoryBaseAddr = 0; //Êý¾ÝBuf
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DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; //ÍâÉè×÷Ä¿±ê
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DMA_InitStructure.DMA_BufferSize = 0; //Buf´óС
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DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //ÍâÉèµØÖ·¼Ä´æÆ÷²»µÝÔö
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DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //ÄÚ´æµØÖ·µÝÔö
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DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //ÍâÉè×Ö½ÚΪµ¥Î»
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DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //ÄÚ´æ×Ö½ÚΪµ¥Î»£¨×¢ÒâÓëÉÏÒ»¸ö±äÁ¿Ãû³Æ²»Í¬£¡£¡£©
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DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //ÆÕͨģʽ
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DMA_InitStructure.DMA_Priority = DMA_Priority_High; //ÓÅÏȼ¶
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DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //·ÇÄÚ´æµ½ÄÚ´æ
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DMA_Init(EUART_TX_DMA_CH, &DMA_InitStructure);
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// DMA_ITConfig(EUART_TX_DMA_CH, DMA_IT_TC, ENABLE); //DMA´«ÊäÍê³ÉÖжÏ
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USART_DMACmd(EXT_UART,USART_DMAReq_Tx,ENABLE); //ÍâÉèʹÄÜDMA // */
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#endif
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}
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void Uart1_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_InitTypeDef USART_InitStructure;
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USART_ClockInitTypeDef USART_ClockInitStructure;
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/* Enable GPIO clock */
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RCC_APB2PeriphClockCmd(EU_RCC_GPIO | RCC_APB2Periph_AFIO, ENABLE);
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/* Enable USART clock */
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RCC_APB2PeriphClockCmd(EXT_UART_RCC, ENABLE);
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Usart1InitVariables();
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//³õʼ»¯¹Ü½Å
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GPIO_InitStructure.GPIO_Pin = EU_RX_PIN;
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GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING; //RxÉÏÀÊäÈë
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(EU_RX_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = EU_TX_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //TxÍÆÍ츴ÓÃÊä³ö GPIO_Mode_AF_PP
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GPIO_Init(EU_TX_GPIO, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = EU_485_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //TxÍÆÍ츴ÓÃÊä³ö GPIO_Mode_AF_PP
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GPIO_Init(EU_485_GPIO, &GPIO_InitStructure);
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OUT485_DISABLE;
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#ifdef UART_GPIO_REMAP_ENABLE
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GPIO_PinRemapConfig(UART_GPIO_REMAP, ENABLE);
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#endif
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USART_DeInit(EXT_UART);
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USART_InitStructure.USART_BaudRate = EXUART_BAUD_RADE;
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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_Rx | USART_Mode_Tx;
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USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
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USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
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USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
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USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
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USART_ClockInit(EXT_UART, &USART_ClockInitStructure);
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USART_Init(EXT_UART, &USART_InitStructure);
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// USART_ITConfig(EXT_UART, USART_IT_RXNE, ENABLE);//??????,????? ??????????
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// Enable the USARTx
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USART_Cmd(EXT_UART, ENABLE);
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//DMAÅäÖã¨Ðë·Åµ½UART³õʼ»¯Ö®ºó£©
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UART_DMAConfiguration();
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}
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void UART_CheckReceive(void)
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{
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int32_t DMACnt = 0;
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int32_t MaxDataLen = EUART_RX_BUF_SIZE;
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//Èç¹ûÕýÔÚÍù·¢ËͶÓÁÐÖÐÌí¼ÓÊý¾Ý£¬Í˳ö
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if(m_bEUARTPushingFrms)
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return;
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//ÅжÏÊÇ·ñÕýÔÚCheck
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if(m_bEUARTCheckingRec)
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return;
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m_bEUARTCheckingRec = 1;
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if(EUART_RX_DMA_CH->CNDTR == 0)
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{
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m_bEUARTCheckingRec = 0;
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return;
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}
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DMACnt = EUART_RX_BUF_SIZE - (EUART_RX_DMA_CH->CNDTR);
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while( m_EUART_DMA_RXPtr != DMACnt && MaxDataLen > 0)
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{
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Usart1ParseDataCallback(m_EUART_DMA_RXBuf[m_EUART_DMA_RXPtr]);
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delay_us(10);
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m_EUART_DMA_RXPtr++;
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if( m_EUART_DMA_RXPtr >= EUART_RX_BUF_SIZE )
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{
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m_EUART_DMA_RXPtr = 0;
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}
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DMACnt = EUART_RX_BUF_SIZE - (EUART_RX_DMA_CH->CNDTR);
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MaxDataLen--;
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}
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m_bEUARTCheckingRec = 0;
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}
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#ifndef EXUART_USE_TXDMA
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//²éѯ·½Ê½·¢ËÍÊý¾Ý
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void UART_CheckSend(void)
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{
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static int32_t s_count = 0;
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// uint32_t temp32 = 0;
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if(m_bEUARTPushingFrms || m_bEUARTCheckingSend)
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return;
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m_bEUARTCheckingSend = 1;
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//Åж϶ÓÁÐÊÇ·ñΪ¿ÕÒÔ¼°DMAÊÇ·ñ¿ÕÏÐ
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if ((EXT_UART->SR & USART_FLAG_TXE) == (uint16_t)RESET) //Éϴη¢ËÍδÍê³É
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{
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m_bEUARTCheckingSend = 0;
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return;
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}
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if(m_EUART_TxFrm_Head == m_EUART_TxFrm_Tail) //¶ÓÁÐΪ¿Õ
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{
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if((EXT_UART->SR & USART_FLAG_TC) != (uint16_t)RESET) //·¢ËÍÍê±Ï
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{
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if(m_bEUARTTxEn)
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{
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OUT485_DISABLE;
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m_bEUARTTxEn = 0;
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// temp32 = GPIOC->CRH; //C10Ðü¿ÕÊäÈë
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// temp32 &= ~(0x00000000F<<8);
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// temp32 |= (0x000000004<<8);
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// GPIOC->CRH = temp32;// */
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}
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}
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m_bEUARTCheckingSend = 0;
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return;
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}
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if(!m_bEUARTTxEn)
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{
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m_bEUARTTxEn = 1;
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OUT485_ENABLE;
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delay_us(10);
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// temp32 = GPIOC->CRH; //C10¸´ÓÃÍÆÍìÊä³ö
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// temp32 &= ~(0x00000000F<<8);
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// temp32 |= (0x000000009<<8);
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// GPIOC->CRH = temp32;// */
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}
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//·¢ËÍÒ»¸ö×Ö½ÚÊý¾Ý
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EXT_UART->DR = m_EUART_TxFrames[m_EUART_TxFrm_Tail].buf[s_count];
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s_count++;
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if(s_count >= m_EUART_TxFrames[m_EUART_TxFrm_Tail].len) //Ò»Ö¡Êý¾Ý·¢ËÍÍê±Ï
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{
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s_count = 0;
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m_EUART_TxFrm_Tail++;
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if(m_EUART_TxFrm_Tail == EUART_TX_FRM_SIZE)
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m_EUART_TxFrm_Tail = 0;
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m_EUART_TxFrm_FreeFrmLen++;
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}
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m_bEUARTCheckingSend = 0;
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} // */
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#else
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/*
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//¼ì²éÊÇ·ñÊý¾ÝÖ¡ÐèÒª·¢ËÍ
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void UART_CheckSend(void)
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{
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//ÅжÏÊÇ·ñÕýÔÚCheck
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if(m_bEUARTPushingFrms || m_bEUARTCheckingSend)
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return;
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m_bEUARTCheckingSend = 1;
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//ÅжÏDMAͨµÀÊÇ·ñÕýÔÚ¹¤×÷
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if((EUART_TX_DMA_CH->CCR & 0x01) != 0) //ͨµÀÕýÔÚ¹¤×÷
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{
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if((EUART_DMA->ISR & EUART_TX_DMA_IT_TC) == (uint32_t)RESET) //´«ÊäδÍê³É
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{
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m_bEUARTCheckingSend = 0;
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return;
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}
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else
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{
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EUART_DMA->IFCR = EUART_TX_DMA_IT_TC; //Çå³ý±êÖ¾£¨×¢Òâ¼Ä´æÆ÷ºÍ±êÖ¾Ãû³Æ£©
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EUART_TX_DMA_CH->CCR &= ~((uint32_t)0x01); //½ûÓÃDMA
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}
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}
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//Åж϶ÓÁÐÊÇ·ñΪ¿Õ
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if(m_EUART_TxFrm_Head == m_EUART_TxFrm_Tail)
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{
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m_bEUARTCheckingSend = 0;
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return;
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}
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//¿ªÆôÒ»´ÎÊý¾Ý·¢ËÍ
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EUART_TX_DMA_CH->CMAR = (uint32_t)m_EUART_TxFrames[m_EUART_TxFrm_Tail].buf; //Òª·¢Ë͵ÄÄÚ´æµØÖ·
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EUART_TX_DMA_CH->CNDTR = m_EUART_TxFrames[m_EUART_TxFrm_Tail].len; //Òª·¢Ë͵Ä×Ö½ÚÊý
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EUART_TX_DMA_CH->CCR |= 0x01; //¿ªÆôÒ»´ÎDMA
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m_EUART_TxFrm_Tail++;
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if(m_EUART_TxFrm_Tail == EUART_TX_FRM_SIZE)
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m_EUART_TxFrm_Tail = 0;
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m_EUART_TxFrm_FreeFrmLen++;
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m_bEUARTCheckingSend = 0;
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} // */
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#endif
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//½«Ò»Ö¡Êý¾ÝѹÈë·¢ËͶÓÁÐ
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void UART_PushFrame(uint8_t* pdata, int32_t data_len)
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{
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// uint8_t temp8 = 0;
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if(m_bEUARTPushingFrms || m_bEUARTCheckingSend)
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return;
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m_bEUARTPushingFrms = 1;
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if(data_len > EUART_TX_FRMBUF_SIZE || m_EUART_TxFrm_FreeFrmLen <= 0) //Ö¡³¤¶È³¬·¶Î§»ò»º´æÒÑÂú
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{
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m_bEUARTPushingFrms = 0;
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return;
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}
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//½«Òª·¢Ë͵ÄÊý¾Ý֡ѹÈë¶ÓÁÐ
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m_EUART_TxFrames[m_EUART_TxFrm_Head].len = data_len;
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memcpy((uint8_t*)m_EUART_TxFrames[m_EUART_TxFrm_Head].buf, (uint8_t*)pdata, data_len);
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m_EUART_TxFrm_Head++;
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if(m_EUART_TxFrm_Head == EUART_TX_FRM_SIZE)
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m_EUART_TxFrm_Head = 0;
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m_EUART_TxFrm_FreeFrmLen--;
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m_bEUARTPushingFrms = 0;
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}
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//½«×îÐÂÒ»Ö¡Êý¾ÝPop³ö¶ÓÁÐ
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void UART_PopFrame(void)
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{
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if(m_bEUARTPushingFrms || m_bEUARTCheckingSend)
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return;
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if(m_EUART_TxFrm_FreeFrmLen >= EUART_TX_FRM_SIZE-1)
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return;
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m_EUART_TxFrm_Head--;
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if(m_EUART_TxFrm_Head < 0)
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m_EUART_TxFrm_Head = EUART_TX_FRM_SIZE-1;
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m_EUART_TxFrm_FreeFrmLen++;
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}
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void USART_putc(char c)
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{
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//while(!(USART2->SR & 0x00000040));
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//USART_SendData(USART2,c);
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/* e.g. write a character to the USART */
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USART_SendData(USART1, c);
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/* Loop until the end of transmission */
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while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) ;
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}
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void USART_puts(uint8_t *s,uint8_t len)
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{
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int i;
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for(i=0; i<len; i++)
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{
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USART_putc(s[i]);
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}
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}
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int fputc(int ch, FILE *f)
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{
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USART_SendData(USART1, (unsigned char) ch);// USART1 ???? USART2 ?
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while (!(USART1->SR & USART_FLAG_TXE));
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return (ch);
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}
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