From 55e36bbbabc1afed172689543d507b6a25d3932c Mon Sep 17 00:00:00 2001
From: zhyinch <zhyinch@gmail.com>
Date: 星期六, 07 八月 2021 09:25:22 +0800
Subject: [PATCH] 1
---
源码/核心板/Src/OnChipDevices/Usart.c | 240 +++++++++++++++++++++++++++++++++++++++++++----------------
1 files changed, 175 insertions(+), 65 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 1d8320b..6e9b0e5 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"
@@ -1,62 +1,6 @@
#include "Usart.h"
-
-//void Usart_Init(void)
-//{
-// USART_InitTypeDef USART_InitStructure;
-// GPIO_InitTypeDef GPIO_InitStructure;
-//
-// /* Enable GPIO clock */
-// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
-// /* Enable USART clock */
-// RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
-//
-// /* Configure USART Tx as alternate function push-pull */
-// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-// GPIO_InitStructure.GPIO_Pin = USART_TX_pin;
-// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-// GPIO_Init(USART_GPIO, &GPIO_InitStructure);
-
-// /* Configure USART Rx as input floating */
-// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
-// GPIO_InitStructure.GPIO_Pin = USART_RX_pin;
-// GPIO_Init(USART_GPIO, &GPIO_InitStructure);
-
-// /* USARTx configured as follow:
-// - BaudRate = 115200 baud
-// - Word Length = 8 Bits
-// - One Stop Bit
-// - No parity
-// - Hardware flow control disabled (RTS and CTS signals)
-// - Receive and transmit enabled
-// */
-// USART_InitStructure.USART_BaudRate = BAUD_RATE ;
-// USART_InitStructure.USART_WordLength = USART_WordLength_8b;
-// USART_InitStructure.USART_StopBits = USART_StopBits_1;
-// USART_InitStructure.USART_Parity = USART_Parity_No;
-// USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
-// USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
-
-// /* USART configuration */
-// USART_Init(EXT_USART, &USART_InitStructure);
-
-// /* Enable USART */
-// USART_Cmd(EXT_USART, ENABLE);
-
-//}
-
-//uint16_t Checksum_u16(uint8_t *pdata, uint32_t len)
-//{
-// uint16_t sum = 0;
-// uint32_t i;
-// for(i = 0; i < len; i++)
-// sum += pdata[i];
-// sum = ~sum;
-// return sum;
-//}
-
-
-
-///////////////////////////////////
+#include <string.h>
+#include <stdio.h>
//数据发送队列变量
EUART_Frame m_EUART_TxFrames[EUART_TX_FRM_SIZE]; //数据发送帧队列
@@ -65,7 +9,7 @@
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
-volatile int32_t m_EUART_DMA_RXPtr = 0; //当前数据地址
+volatile int32_t m_EUART_DMA_RXPtr = 0,m_EUART2_DMA_RXPtr = 0; //当前数据地址
//标志变量
volatile uint8_t m_bEUARTPushingFrms = 0; //正在往发送队列存数据
volatile uint8_t m_bEUARTCheckingSend = 0; //正在确认数据发送
@@ -73,7 +17,6 @@
volatile uint8_t m_bEUARTTxEn = 0; //使能发送
void (*Usart1ParseDataCallback)(uint8_t);
-
void Usart1InitVariables(void)
{
m_EUART_TxFrm_FreeFrmLen = EUART_TX_FRM_SIZE-1;
@@ -139,14 +82,18 @@
//初始化管脚
GPIO_InitStructure.GPIO_Pin = EU_RX_PIN;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //Rx上拉输入
+ GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING; //Rx上拉输入
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(EU_RX_GPIO, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = EU_TX_PIN;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //Tx推挽复用输出
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //Tx推挽复用输出 GPIO_Mode_AF_PP
GPIO_Init(EU_TX_GPIO, &GPIO_InitStructure);
+ GPIO_InitStructure.GPIO_Pin = EU_485_PIN;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //Tx推挽复用输出 GPIO_Mode_AF_PP
+ GPIO_Init(EU_485_GPIO, &GPIO_InitStructure);
+ OUT485_DISABLE;
#ifdef UART_GPIO_REMAP_ENABLE
GPIO_PinRemapConfig(UART_GPIO_REMAP, ENABLE);
#endif
@@ -166,7 +113,7 @@
USART_ClockInit(EXT_UART, &USART_ClockInitStructure);
USART_Init(EXT_UART, &USART_InitStructure);
-
+// USART_ITConfig(EXT_UART, USART_IT_RXNE, ENABLE);//??????,????? ??????????
// Enable the USARTx
USART_Cmd(EXT_UART, ENABLE);
//DMA配置（须放到UART初始化之后）
@@ -195,6 +142,7 @@
while( m_EUART_DMA_RXPtr != DMACnt && MaxDataLen > 0)
{
Usart1ParseDataCallback(m_EUART_DMA_RXBuf[m_EUART_DMA_RXPtr]);
+ delay_us(10);
m_EUART_DMA_RXPtr++;
if( m_EUART_DMA_RXPtr >= EUART_RX_BUF_SIZE )
{
@@ -231,6 +179,7 @@
{
if(m_bEUARTTxEn)
{
+ OUT485_DISABLE;
m_bEUARTTxEn = 0;
// temp32 = GPIOC->CRH; //C10悬空输入
// temp32 &= ~(0x00000000F<<8);
@@ -241,17 +190,21 @@
m_bEUARTCheckingSend = 0;
return;
}
+
if(!m_bEUARTTxEn)
{
m_bEUARTTxEn = 1;
+ OUT485_ENABLE;
+ delay_us(10);
// temp32 = GPIOC->CRH; //C10复用推挽输出
// temp32 &= ~(0x00000000F<<8);
// temp32 |= (0x000000009<<8);
// GPIOC->CRH = temp32;// */
}
+
//发送一个字节数据
- EXT_UART->DR = m_EUART_TxFrames[m_EUART_TxFrm_Tail].buf[s_count];
- s_count++;
+ EXT_UART->DR = m_EUART_TxFrames[m_EUART_TxFrm_Tail].buf[s_count];
+ s_count++;
if(s_count >= m_EUART_TxFrames[m_EUART_TxFrm_Tail].len) //一帧数据发送完毕
{
s_count = 0;
@@ -344,4 +297,161 @@
m_EUART_TxFrm_Head = EUART_TX_FRM_SIZE-1;
m_EUART_TxFrm_FreeFrmLen++;
}
+void USART_putc(char c)
+{
+ //while(!(USART2->SR & 0x00000040));
+ //USART_SendData(USART2,c);
+ /* e.g. write a character to the USART */
+ USART_SendData(USART1, c);
+
+ /* Loop until the end of transmission */
+ while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) ;
+}
+void USART_puts(uint8_t *s,uint8_t len)
+{
+ int i;
+ for(i=0; i<len; i++)
+ {
+ USART_putc(s[i]);
+ }
+}
+int fputc(int ch, FILE *f)
+{
+
+ USART_SendData(USART1, (unsigned char) ch);// USART1 ???? USART2 ?
+ while (!(USART1->SR & USART_FLAG_TXE));
+ return (ch);
+}
+//////////////////////////////////////////////////////////////USART2
+
+void UART2_DMAConfiguration(void)
+{
+ DMA_InitTypeDef DMA_InitStructure;
+
+ RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
+
+ //UART的DMA数据接收初始化
+ DMA_DeInit(UART2_RX_DMA_CH);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)( &(EXT_UART2->DR)); //外设数据寄存器
+ DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)m_EUART_DMA_RXBuf; //数据Buf
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; //外设作源头
+ DMA_InitStructure.DMA_BufferSize = EUART_RX_BUF_SIZE; //Buf大小
+ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址不增加
+ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址增加
+ DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //字节
+ DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //字节（注意与上一个变量名称不同！！）
+ DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; //循环模式
+ DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; //优先级
+ DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //非内存到内存
+ DMA_Init(UART2_RX_DMA_CH, &DMA_InitStructure);
+ USART_DMACmd(EXT_UART2, USART_DMAReq_Rx, ENABLE);
+ DMA_Cmd(UART2_RX_DMA_CH, ENABLE);
+
+#ifdef EXUART_USE_TXDMA
+ //UART的DMA数据发送初始化
+ DMA_DeInit(EUART_TX_DMA_CH);
+ DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(EXT_UART->DR)); //外设数据寄存器
+ DMA_InitStructure.DMA_MemoryBaseAddr = 0; //数据Buf
+ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; //外设作目标
+ DMA_InitStructure.DMA_BufferSize = 0; //Buf大小
+ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //外设地址寄存器不递增
+ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; //内存地址递增
+ DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; //外设字节为单位
+ DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; //内存字节为单位（注意与上一个变量名称不同！！）
+ DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //普通模式
+ DMA_InitStructure.DMA_Priority = DMA_Priority_High; //优先级
+ DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; //非内存到内存
+ DMA_Init(EUART_TX_DMA_CH, &DMA_InitStructure);
+
+// DMA_ITConfig(EUART_TX_DMA_CH, DMA_IT_TC, ENABLE); //DMA传输完成中断
+ USART_DMACmd(EXT_UART,USART_DMAReq_Tx,ENABLE); //外设使能DMA // */
+#endif
+}
+
+void Uart2_Init(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+ USART_InitTypeDef USART_InitStructure;
+ USART_ClockInitTypeDef USART_ClockInitStructure;
+
+ /* Enable GPIO clock */
+ // RCC_APB2PeriphClockCmd(EU_RCC_GPIO | RCC_APB2Periph_AFIO, ENABLE);
+ /* Enable USART clock */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
+
+ Usart1InitVariables();
+
+ //初始化管脚
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
+ GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING; //Rx上拉输入
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_Init(EU_RX_GPIO, &GPIO_InitStructure);
+
+ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //Tx推挽复用输出 GPIO_Mode_AF_PP
+ GPIO_Init(EU_TX_GPIO, &GPIO_InitStructure);
+
+
+#ifdef UART_GPIO_REMAP_ENABLE
+ GPIO_PinRemapConfig(UART_GPIO_REMAP, ENABLE);
+#endif
+
+ USART_DeInit(EXT_UART2);
+ USART_InitStructure.USART_BaudRate = EXUART_BAUD_RADE;
+ USART_InitStructure.USART_WordLength = USART_WordLength_8b;
+ USART_InitStructure.USART_StopBits = USART_StopBits_1;
+ USART_InitStructure.USART_Parity = USART_Parity_No;
+ USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
+
+ USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
+ USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
+ USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
+ USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
+
+ USART_ClockInit(EXT_UART2, &USART_ClockInitStructure);
+ USART_Init(EXT_UART2, &USART_InitStructure);
+// USART_ITConfig(EXT_UART, USART_IT_RXNE, ENABLE);//??????,????? ??????????
+ // Enable the USARTx
+ USART_Cmd(EXT_UART2, ENABLE);
+ //DMA配置（须放到UART初始化之后）
+ UART2_DMAConfiguration();
+
+}
+
+void UART2_CheckReceive(void)
+{
+ int32_t DMACnt = 0;
+ int32_t MaxDataLen = EUART_RX_BUF_SIZE;
+
+ //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(UART2_RX_DMA_CH->CNDTR == 0)
+ {
+ m_bEUARTCheckingRec = 0;
+ return;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - (UART2_RX_DMA_CH->CNDTR);
+ while( m_EUART2_DMA_RXPtr != DMACnt && MaxDataLen > 0)
+ {
+ Usart1ParseDataCallback(m_EUART_DMA_RXBuf[m_EUART2_DMA_RXPtr]);
+ delay_us(10);
+ m_EUART2_DMA_RXPtr++;
+ if( m_EUART2_DMA_RXPtr >= EUART_RX_BUF_SIZE )
+ {
+ m_EUART2_DMA_RXPtr = 0;
+ }
+ DMACnt = EUART_RX_BUF_SIZE - (UART2_RX_DMA_CH->CNDTR);
+ MaxDataLen--;
+ }
+ m_bEUARTCheckingRec = 0;
+}
+
+
+
--
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