From 8aa343c68337975234072baae5eda592487c4271 Mon Sep 17 00:00:00 2001
From: chen <15335560115@163.com>
Date: 星期六, 16 八月 2025 18:29:41 +0800
Subject: [PATCH] 防丢手环V1.0demo版本实现一对多测距和发送震动信息
---
keil/include/drivers/Usart.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 42 insertions(+), 1 deletions(-)
diff --git a/keil/include/drivers/Usart.c b/keil/include/drivers/Usart.c
index 6d4af12..0ed53af 100644
--- a/keil/include/drivers/Usart.c
+++ b/keil/include/drivers/Usart.c
@@ -12,6 +12,7 @@
volatile int8_t m_EUART_TxFrm_FreeFrmLen = 0; //数据发送帧队列剩余帧数
//DMA数据接收缓存
uint8_t m_EUART_DMA_RXBuf[EUART_RX_BUF_SIZE]; //DMA数据接收缓存
+uint8_t m_EUART0_DMA_RXBuf[EUART_RX_BUF_SIZE]; //DMA数据接收缓存
volatile int32_t m_EUART_DMA_RXPtr = 0; //当前数据地址
//int16_t DMA_rxtemp = 0,DMA_rxtemp2 = 0; //当前数据地址缓存
//uint16_t datadelaycount = 0; //剩余1位数据延时等待处理
@@ -21,7 +22,14 @@
volatile uint8_t m_bEUARTCheckingRec = 0; //正在确认接收数据
volatile uint8_t m_bEUARTTxEn = 0; //使能发送
+//标志变量
+volatile uint8_t m_bEUART0PushingFrms = 0; //正在往发送队列存数据
+volatile uint8_t m_bEUART0CheckingSend = 0; //正在确认数据发送
+volatile uint8_t m_bEUART0CheckingRec = 0; //正在确认接收数据
+volatile uint8_t m_bEUART0TxEn = 0; //使能发送
+volatile int32_t m_EUART0_DMA_RXPtr = 0; //当前数据地址
void (*Usart1ParseDataCallback)(uint8_t);
+void (*Usart0ParseDataCallback)(uint8_t);
void Usart1InitVariables(void)
{
m_EUART_TxFrm_FreeFrmLen = EUART_TX_FRM_SIZE-1;
@@ -71,7 +79,40 @@
}
-
+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_bEUART0PushingFrms)
+ return;
+ //判断是否正在Check
+ if(m_bEUART0CheckingRec)
+ return;
+ m_bEUART0CheckingRec = 1;
+ if(cndtr== 0)
+ {
+ m_bEUART0CheckingRec = 0;
+ return;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - cndtr;
+ while( m_EUART0_DMA_RXPtr != DMACnt && MaxDataLen > 0)
+ {
+ Usart0ParseDataCallback(m_EUART0_DMA_RXBuf[m_EUART0_DMA_RXPtr]);
+ //waitusart_timer = tag_frequency*USART_KEEPWAKE_TIME;
+ m_EUART0_DMA_RXPtr++;
+ if( m_EUART0_DMA_RXPtr >= EUART_RX_BUF_SIZE )
+ {
+ m_EUART0_DMA_RXPtr = 0;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - cndtr;
+ MaxDataLen--;
+ }
+ m_bEUART0CheckingRec = 0;
+
+}
#ifndef EXUART_USE_TXDMA
//查询方式发送数据
--
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