From f0a7dd2eac351fd48b358f548c181bcc49965d1e Mon Sep 17 00:00:00 2001
From: WXK <287788329@qq.com>
Date: 星期五, 03 一月 2025 17:33:37 +0800
Subject: [PATCH] 修改测距上位机显示-负值
---
keil/include/drivers/Usart.c | 35 ++++++++++++++++++++++++++++++++++-
1 files changed, 34 insertions(+), 1 deletions(-)
diff --git a/keil/include/drivers/Usart.c b/keil/include/drivers/Usart.c
index 6d4af12..f3fac94 100644
--- a/keil/include/drivers/Usart.c
+++ b/keil/include/drivers/Usart.c
@@ -36,6 +36,40 @@
uint16_t t3;
uint32_t cndtr=0;
+void UART0_CheckReceive(void)
+{
+ int32_t DMACnt = 0;
+ int32_t MaxDataLen = EUART_RX_BUF_SIZE;
+ cndtr=get_uart0_dma_cndtr();
+ //缺少check保护
+ //如果正在往发送队列中添加数据，退出
+ if(m_bEUARTPushingFrms)
+ return;
+ //判断是否正在Check
+ if(m_bEUARTCheckingRec)
+ return;
+ m_bEUARTCheckingRec = 1;
+ if(cndtr== 0)
+ {
+ m_bEUARTCheckingRec = 0;
+ return;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - cndtr;
+ while( m_EUART_DMA_RXPtr != DMACnt && MaxDataLen > 0)
+ {
+ Usart1ParseDataCallback(m_EUART_DMA_RXBuf[m_EUART_DMA_RXPtr]);
+ //waitusart_timer = tag_frequency*USART_KEEPWAKE_TIME;
+ m_EUART_DMA_RXPtr++;
+ if( m_EUART_DMA_RXPtr >= EUART_RX_BUF_SIZE )
+ {
+ m_EUART_DMA_RXPtr = 0;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - cndtr;
+ MaxDataLen--;
+ }
+ m_bEUARTCheckingRec = 0;
+
+}
void UART_CheckReceive(void)
{
int32_t DMACnt = 0;
@@ -68,7 +102,6 @@
MaxDataLen--;
}
m_bEUARTCheckingRec = 0;
-
}
--
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