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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