From 0336357cf8d72c0c17c6fed3d5233f1e352e32ae Mon Sep 17 00:00:00 2001
From: zhyinch <zhyinch@gmail.com>
Date: 星期三, 16 二月 2022 19:57:40 +0800
Subject: [PATCH] 修改485控制BUG

---
 源码/核心板/Src/OnChipDevices/Usart.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git "a/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Usart.c" "b/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Usart.c"
index cb7716c..234c307 100644
--- "a/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Usart.c"
+++ "b/\346\272\220\347\240\201/\346\240\270\345\277\203\346\235\277/Src/OnChipDevices/Usart.c"
@@ -333,7 +333,7 @@
  }		   // */
 
 #else
- /*
+
 //检查是否数据帧需要发送
 void UART_CheckSend(void)
 {
@@ -361,10 +361,12 @@
 	if(m_EUART_TxFrm_Head == m_EUART_TxFrm_Tail)
 	{
 		m_bEUARTCheckingSend = 0;
+		OUT485_DISABLE;
 		return;
 	}
 	
 	//开启一次数据发送
+	OUT485_ENABLE;
 	EUART_TX_DMA_CH->CMAR = (uint32_t)m_EUART_TxFrames[m_EUART_TxFrm_Tail].buf;	//要发送的内存地址 
 	EUART_TX_DMA_CH->CNDTR = m_EUART_TxFrames[m_EUART_TxFrm_Tail].len;		//要发送的字节数
 	EUART_TX_DMA_CH->CCR |= 0x01;											//开启一次DMA  
@@ -399,6 +401,7 @@
 		m_EUART_TxFrm_Head = 0;
 	m_EUART_TxFrm_FreeFrmLen--;
 	m_bEUARTPushingFrms = 0;	
+	UART_CheckSend();
 }
 
 //将最新一帧数据Pop出队列

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