我做了一个宠物智能投喂系统，现在我有一个stm32f
103c6单片机外接8的晶振，其PA
1连作为RXD，PA2作为TXD，PB0、PB
1连接了发光二极管的负极，发光二极管的正极接的电源，发光二极管用来模拟电机转动状态，在收到喂食的指令后PB0先亮两秒，PB
1先不亮，然后在PB
1亮两秒PB0熄灭，最后一起闪烁两秒表示喂食已完成，我创建了一个
mfc程序
(PC
MFCDLG
)，添加了5个Combo Box控件分别用来选择端口号（控件类，m_cbPort）、波特率（控件类，m_cbBaud）、校验位（控件类，m_cbParity）、数据位（控件类，m_cbDate）以及停止位（控件类，m_cbStop），4个按钮控件分别用来打开串口连接stm32单片机、关闭串口、立即投喂、定时投喂，3个
Edit control控件（value类，m_strTime
1/2/3）用来定时3个时间点实现定时投喂，最后还有一个List Box（控件类，m_listStatus）用来显示执行状态，在PC机与单片机没有建立连接的时候除了连接按钮，其他按钮都不能点击，在定时按钮没有按下的时候
edit control控件不能输入，在单片机执行完相应操作后，会返还给PC机信息，然后显示在list box里面如
mfc界面点击立即投喂，单片机执行完操作后返回给pc端
mfc界面一个标志，告诉pc端操作已完成，然后在
mfc界面的list里面显示对应操作已完成。
下面是我的代码
#pragma once
#include <windows.h>
#include <afxwin.h>
class CSerialPort
{
public:
CSerialPort
();
~CSerialPort
();
bool OpenPort
(LPCTSTR port, UINT baud
);
void ClosePort
();
bool WriteByte
(BYTE data
);
bool IsConnected
() const { return m_hComm != INVALID_HANDLE_VALUE; }
private:
HANDLE m_hComm;
};
#include "pch.h"
#include "SerialPort.h"
CSerialPort::CSerialPort
() : m_hComm
(INVALID_HANDLE_VALUE
) {}
CSerialPort::~CSerialPort
() { ClosePort
(); }
bool CSerialPort::OpenPort
(LPCTSTR port, UINT baud
)
{
m_hComm = CreateFile
(port, GENERIC_READ | GENERIC_WRITE,
0, NULL, OPEN_EXISTING, 0, NULL
);
if
(m_hComm == INVALID_HANDLE_VALUE
)
return
false;
// 配置串口参数
DCB dcb = { 0 };
dcb.DCBlength = sizeof
(DCB
);
GetCommState
(m_hComm, &dcb
);
dcb.BaudRate = baud;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
dcb.fBinary = TRUE;
if
(!SetCommState
(m_hComm, &dcb
)) {
CloseHandle
(m_hComm
);
m_hComm = INVALID_HANDLE_VALUE;
return
false;
}
return true;
}
void CSerialPort::ClosePort
()
{
if
(IsConnected
()) {
CloseHandle
(m_hComm
);
m_hComm = INVALID_HANDLE_VALUE;
}
}
bool CSerialPort::WriteByte
(BYTE data
)
{
if
(!IsConnected
()) return
false;
DWORD bytesWritten;
return WriteFile
(m_hComm, &data,
1, &bytesWritten, NULL
) && bytesWritten ==
1;
}
#pragma once
#include "SerialPort.h"
#include "resource.h" // 包含资源ID定义
class CPC
MFCDlg : public CDialogEx
{
public:
CPC
MFCDlg
(CWnd* pParent = nullptr
);
// 控件变量
CComboBox m_cbPort;
CListBox m_listStatus;
CString m_strTime
1, m_strTime2, m_strTime3;
protected:
virtual void DoDataExchange
(CDataExchange* pDX
);
virtual BOOL OnInitDialog
();
DECLARE_MESSAGE_MAP
()
private:
CSerialPort m_SerialPort;
BOOL m_bConnected;
UINT_PTR m_nTimerID;
BOOL m_bTimerEnabled;
void AddStatus
(LPCTSTR msg
);
void UpdateUI
();
BOOL ValidateTime
(CString time
);
afx_msg void OnOpen
();
afx_msg void OnClose
();
afx_msg void OnNowFeed
();
afx_msg void OnTimeFeed
();
afx_msg void OnTimer
(UINT_PTR nIDEvent
);
};
#include "pch.h"
#include "PC
MFCDlg.h"
// 消息映射
BEGIN_MESSAGE_MAP
(CPC
MFCDlg, CDialogEx
)
ON_BN_CLICKED
(IDC_BUTTON_OPEN, &CPC
MFCDlg::OnOpen
)
ON_BN_CLICKED
(IDC_BUTTON_CLOSE, &CPC
MFCDlg::OnClose
)
ON_BN_CLICKED
(IDC_BUTTON_NOWFEED, &CPC
MFCDlg::OnNowFeed
)
ON_BN_CLICKED
(IDC_BUTTON_TIMEFEED, &CPC
MFCDlg::OnTimeFeed
)
ON_WM_TIMER
()
END_MESSAGE_MAP
()
CPC
MFCDlg::CPC
MFCDlg
(CWnd* pParent
)
: CDialogEx
(IDD_PC
MFC_DIALOG, pParent
)
, m_strTime
1(_T
("08:00"
)), m_strTime2
(_T
("
12:00"
)), m_strTime3
(_T
("
18:00"
))
, m_bConnected
(FALSE), m_nTimerID
(0
), m_bTimerEnabled
(FALSE) {
}
void CPC
MFCDlg::DoDataExchange
(CDataExchange* pDX
)
{
CDialogEx::DoDataExchange
(pDX
);
DDX_Control
(pDX,
IDC_COMBO_PORT, m_cbPort
);
DDX_Control
(pDX,
IDC_LIST, m_listStatus
);
DDX_Text
(pDX,
IDC_
EDIT_TIME
1, m_strTime
1);
DDX_Text
(pDX,
IDC_
EDIT_TIME2, m_strTime2
);
DDX_Text
(pDX,
IDC_
EDIT_TIME3, m_strTime3
);
}
BOOL CPC
MFCDlg::OnInitDialog
()
{
CDialogEx::OnInitDialog
();
// 初始化串口列表
for
(int i =
1; i <=
16; i++
) {
CString port;
port.Format
(_T
("COM%d"
), i
);
m_cbPort.AddString
(port
);
}
m_cbPort.SetCurSel
(0
);
UpdateData
(FALSE);
UpdateUI
();
AddStatus
(_T
("系统就绪"
));
return TRUE;
}
void CPC
MFCDlg::AddStatus
(LPCTSTR msg
)
{
CString time = CTime::GetCurrentTime
().Format
(_T
("[%H:%M:%S] "
));
m_listStatus.AddString
(time + msg
);
m_listStatus.SetCurSel
(m_listStatus.GetCount
() - 1);
}
void CPC
MFCDlg::UpdateUI
()
{
GetDlgItem(IDC_BUTTON_CLOSE
)->
EnableWindow(m_bConnected
);
GetDlgItem(IDC_BUTTON_NOWFEED
)->
EnableWindow(m_bConnected
);
GetDlgItem(IDC_BUTTON_TIMEFEED
)->
EnableWindow(m_bConnected
);
BOOL enable
Edit = m_bConnected && m_bTimerEnabled;
GetDlgItem(IDC_
EDIT_TIME
1)->
EnableWindow(enable
Edit);
GetDlgItem(IDC_
EDIT_TIME2
)->
EnableWindow(enable
Edit);
GetDlgItem(IDC_
EDIT_TIME3
)->
EnableWindow(enable
Edit);
}
void CPC
MFCDlg::OnOpen
()
{
CString port;
m_cbPort.GetWindowText
(port
);
if
(m_SerialPort.OpenPort
(port, 9600
)) {
m_bConnected = TRUE;
AddStatus
(_T
("已连接到: "
) + port
);
UpdateUI
();
}
else {
AddStatus
(_T
("连接失败: "
) + port
);
}
}
void CPC
MFCDlg::OnClose
()
{
m_SerialPort.ClosePort
();
m_bConnected =
FALSE;
AddStatus
(_T
("连接已关闭"
));
UpdateUI
();
}
BOOL CPC
MFCDlg::ValidateTime
(CString time
)
{
return time.GetLength
() == 5 && time[2] == ':' &&
_ttoi
(time.Left
(2
)) < 24 && _ttoi
(time.Mid
(3
)) < 60;
}
void CPC
MFCDlg::OnNowFeed
()
{
if
(m_SerialPort.WriteByte
(0xAA
)) {
AddStatus
(_T
("喂食指令已发送"
));
}
else {
AddStatus
(_T
("发送失败"
));
}
}
void CPC
MFCDlg::OnTimeFeed
()
{
UpdateData
(TRUE
);
if
(!ValidateTime
(m_strTime
1) || !ValidateTime
(m_strTime2
) || !ValidateTime
(m_strTime3
)) {
AddStatus
(_T
("时间格式应为 HH:MM"
));
return;
}
if
(m_nTimerID
) {
KillTimer
(m_nTimerID
);
m_nTimerID = 0;
m_bTimerEnabled =
FALSE;
AddStatus
(_T
("定时喂食已停止"
));
GetDlgItem(IDC_BUTTON_TIMEFEED
)->SetWindowText
(_T
("启动定时"
));
}
else {
m_nTimerID = SetTimer
(1,
1000, NULL
);
m_bTimerEnabled = TRUE;
CString msg;
msg.Format
(_T
("定时喂食启动: %s, %s, %s"
), m_strTime
1, m_strTime2, m_strTime3
);
AddStatus
(msg
);
GetDlgItem(IDC_BUTTON_TIMEFEED
)->SetWindowText
(_T
("停止定时"
));
}
UpdateUI
();
}
void CPC
MFCDlg::OnTimer
(UINT_PTR nIDEvent
)
{
if
(nIDEvent ==
1) {
CString now = CTime::GetCurrentTime
().Format
(_T
("%H:%M"
));
if
(now == m_strTime
1 || now == m_strTime2 || now == m_strTime3
) {
CString msg;
msg.Format
(_T
("定时喂食: %s"
), now
);
AddStatus
(msg
);
OnNowFeed
();
}
}
CDialogEx::OnTimer
(nIDEvent
);
}
下面是keil部分
#include "stm32f
10x.h"
// 简化函数声明
void GPIO_Config
(void
);
void USART2_Config
(void
);
void FeedOperation
(void
);
void Delay_ms
(uint32_t ms
);
int main
(void
)
{
// 系统初始化
RCC
->APB2ENR |= RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN;
RCC
->APB
1ENR |= RCC_APB
1ENR_USART2EN;
GPIO_Config
();
USART2_Config
();
// 初始状态：LED全灭
GPIOB
->ODR |= GPIO_Pin_0 | GPIO_Pin_
1;
while
(1)
{
// 检查接收数据
if
(USART2
->SR & USART_SR_RXNE
) {
uint8_t data = USART2
->DR;
if
(data == 0xAA
) {
FeedOperation
();
while
(!
(USART2
->SR & USART_SR_TXE
));
USART2
->DR = 0x55; // 发送完成信号
}
}
}
}
// GPIO配置
void GPIO_Config
(void
)
{
// USART2 TX
(PA2
)复用推挽输出
GPIOA
->CRL &= ~
(GPIO_CRL_CNF2 | GPIO_CRL_MODE2
);
GPIOA
->CRL |= GPIO_CRL_CNF2_
1 | GPIO_CRL_MODE2;
// USART2 RX
(PA
1)浮空输入
GPIOA
->CRL &= ~
(GPIO_CRL_CNF
1 | GPIO_CRL_MODE
1);
GPIOA
->CRL |= GPIO_CRL_CNF
1_0;
// LED控制引脚 PB0, PB
1 (推挽输出
)
GPIOB
->CRL &= ~
(GPIO_CRL_CNF0 | GPIO_CRL_CNF
1 | GPIO_CRL_MODE0 | GPIO_CRL_MODE
1);
GPIOB
->CRL |= GPIO_CRL_MODE0 | GPIO_CRL_MODE
1;
}
// USART2配置
void USART2_Config
(void
)
{
// 波特率9600
(36MHz/9600=3750=0x0EA6
)
USART2
->BRR = 0x0EA6;
USART2
->CR
1 = USART_CR
1_TE | USART_CR
1_RE | USART_CR
1_UE;
}
// 喂食操作
void FeedOperation
(void
)
{
// 阶段
1: PB0亮2秒，PB
1灭
GPIOB
->BRR = GPIO_Pin_0; // PB0亮
GPIOB
->BSRR = GPIO_Pin_
1; // PB
1灭
Delay_ms
(2000
);
// 阶段2: PB
1亮2秒，PB0灭
GPIOB
->BSRR = GPIO_Pin_0; // PB0灭
GPIOB
->BRR = GPIO_Pin_
1; // PB
1亮
Delay_ms
(2000
);
// 阶段3: 一起闪烁2秒
for
(uint8_t i = 0; i < 4; i++
) {
GPIOB
->BRR = GPIO_Pin_0 | GPIO_Pin_
1; // 全亮
Delay_ms
(250
);
GPIOB
->BSRR = GPIO_Pin_0 | GPIO_Pin_
1; // 全灭
Delay_ms
(250
);
}
// 确保全灭
GPIOB
->BSRR = GPIO_Pin_0 | GPIO_Pin_
1;
}
// 简单延时函数
void Delay_ms
(uint32_t ms
)
{
for
(; ms > 0; ms
--) {
for
(volatile uint32_t i = 0; i < 9000; i++
);
}
}
请你帮我在
mfc里面增加那些端口号，自动识别出可以连接的供选择，然后波特率、停止位、校验位、数据位也提供常用的供选择的功能，然后输出更改后的代码，然后我点击立即投喂后单片机的led灯不亮，请你分析原因
本文介绍了如何通过GetDlgItem(IDC_EDIT1)获取控件指针，并使用EnableWindow(false)使该控件不可用。
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