大家好,我是痞子衡,是正经搞技术的痞子。今天痞子衡给大家介绍的是串口调试工具pzh-py-com诞生之软件优化。
前面痞子衡已经初步实现了pzh-py-com的串口功能,并且通过了最基本的测试,但目前的pzh-py-com相比市面上流行的串口调试工具还差得很远,有很大的优化空间。优化可以从两方面进行:一、是功能上的优化,可以添加更多实用的功能;二、是界面效果上的优化,可以增加一些界面动画效果或者重新配色美化界面。下面痞子衡从这两方面分别为pzh-py-com做一些简单的优化:
一、功能优化
1.1 增强鲁棒性
最开始要做的功能优化应该是增强软件鲁棒性,即在任何异常用户输入的情况下,软件都不能挂掉,痞子衡在实测中发现当用户在"Com Port"里输入的是无效串口设备号时,软件会挂掉,因此做了以下改进,在打开设备时使用try except语句,如有异常,直接退出,不会继续后面代码的执行。此类改进还有很多,不一一例举。
class mainWin(win.com_win):
def openClosePort( self, event ):
if s_serialPort.isOpen():
s_serialPort.close()
self.m_button_openClose.SetLabel('Open')
else:
# ...
self.setParitybits()
# 添加代码开始
try:
s_serialPort.open()
except Exception, e:
# Show warning message
return
# 添加代码结束
self.m_button_openClose.SetLabel('Close')
# ...
1.2 自动检测可用Port
最初版本实现Port口选择是用户按标准格式“COMx”手动输入,但这样有一个问题,即用户输入的格式有可能不合法,并且即使是一个合法的格式输入,但也可能不是一个可用的有效Port。参照市面上流行的串口调试助手,有的是下拉菜单选择所有COM口(比如AccessPort,这样可以解决不合法格式输入的问题),有的是下拉菜单选择可用的COM口(比如sscom,这样可以解决Port是否有效的问题),痞子衡参照sscom的做法对pzh-py-com进行了如下优化:
class mainWin(win.com_win):
def __init__(self, parent):
self.refreshComPort(None)
self.m_choice_comPort.SetSelection( 0 )
def refreshComPort( self, event ):
comports = list(serial.tools.list_ports.comports())
ports = [None] * len(comports)
for i in range(len(comports)):
comport = list(comports[i])
# example comport = [u'COM3', u'Intel(R) Active Management Technology - SOL (COM3)', u'PCI\\VEN_8086&DEV_9D3D&SUBSYS_06DC1028&REV_21\\3&11583659&0&B3']
ports[i] = comport[0] + ' - ' + comport[1]
self.m_choice_comPort.Clear()
self.m_choice_comPort.SetItems(ports)
def setPort ( self ):
index = self.m_choice_comPort.GetSelection()
comPort = self.m_choice_comPort.GetString(index)
comPort = comPort.split(' - ')
s_serialPort.port = comPort[0]
1.3 实现格式切换功能
Char/Hex格式转换属于比较实用的功能,一般的串口调试助手都会有这个功能,pzh-py-com之前默认总是按照Char格式来输入和显示,"Format"选项框的功能实际上并没有实现,因此痞子衡在这里加上了格式切换功能。
import formatter
s_formatter = formatter.formatter()
s_lastRecvFormat = None
s_lastSendFormat = None
class mainWin(win.com_win):
# 函数功能实现
def setSendFormat( self, event ):
lines = self.m_textCtrl_send.GetNumberOfLines()
if lines != 0:
m_sendFormat = self.m_choice_sendFormat.GetString(self.m_choice_sendFormat.GetSelection())
global s_lastSendFormat
if s_lastSendFormat == m_sendFormat:
return
else:
s_lastSendFormat = m_sendFormat
# Get existing data from textCtrl_send
data = ''
for i in range(0, lines):
data += str(self.m_textCtrl_send.GetLineText(i))
# Convert data format according to choice_sendFormat
if m_sendFormat == 'Char':
status, data = s_formatter.hexToChar(data)
if not status:
self.m_textCtrl_send.Clear()
self.m_textCtrl_send.write('Invalid format! Correct example: 12 34 56 ab cd ef')
return
elif m_sendFormat == 'Hex':
data = s_formatter.charToHex(data)
# Re-show converted data in textCtrl_send
self.m_textCtrl_send.Clear()
self.m_textCtrl_send.write(data)
def sendData( self, event ):
if s_serialPort.isOpen():
lines = self.m_textCtrl_send.GetNumberOfLines()
if lines != 0:
data = ''
for i in range(0, lines):
data += str(self.m_textCtrl_send.GetLineText(i))
# 添加代码开始
# Make sure data is always in 'Char' format
m_sendFormat = self.m_choice_sendFormat.GetString(self.m_choice_sendFormat.GetSelection())
if m_sendFormat == 'Hex':
status, data = s_formatter.hexToChar(data)
if not status:
self.m_textCtrl_send.Clear()
self.m_textCtrl_send.write('Invalid format! Correct example: 12 34 56 ab cd ef')
return
# 添加代码结束
s_serialPort.write(data)
# 函数功能实现
def setRecvFormat( self, event ):
lines = self.m_textCtrl_recv.GetNumberOfLines()
if lines != 0:
m_recvFormat = self.m_choice_recvFormat.GetString(self.m_choice_recvFormat.GetSelection())
global s_lastRecvFormat
if s_lastRecvFormat == m_recvFormat:
return
else:
s_lastRecvFormat = m_recvFormat
# Get existing data from textCtrl_recv
data = ''
for i in range(0, lines):
data += str(self.m_textCtrl_recv.GetLineText(i))
# Convert data format according to choice_recvFormat
if m_recvFormat == 'Char':
status, data = s_formatter.hexToChar(data)
elif m_recvFormat == 'Hex':
data = s_formatter.charToHex(data)
# Re-show converted data in textCtrl_recv
self.m_textCtrl_recv.Clear()
self.m_textCtrl_recv.write(data)
def recvData( self ):
if s_serialPort.isOpen():
num = s_serialPort.inWaiting()
if num != 0:
data = s_serialPort.read(num)
# 添加代码开始
# Note: Assume that data is always in 'Char' format
# Convert data format if dispaly format is 'Hex'
m_recvFormat = self.m_choice_recvFormat.GetString(self.m_choice_recvFormat.GetSelection())
if m_recvFormat == 'Hex':
data = s_formatter.charToHex(data)
# 添加代码结束
self.m_textCtrl_recv.write(data)
发送输入框格式切换功能实测如下,尤其是在Hex模式下,如果有异常输入,pzh-py-com会直接清屏,并在输入框里提示正确的示例。接收显示框格式切换功能雷同,但并不包含异常输入提示,因为这是个结果显示输出框。
1.4 启用菜单栏
菜单栏是一个功能齐全的软件的标配,用于实现各种特性功能,此处痞子衡仅添加了一个“Help”菜单,用于显示pzh-py-com的主页以及作者信息。首先需要在wxFormBuilder添加menu控件,然后设置回调函数名,下面是回调函数的实现:
def showHomepageMessage( self, event ):
messageText = (('Code: \n https://github.com/JayHeng/pzh-py-com.git \n') +
('Doc: \n https://www.cnblogs.com/henjay724/p/9416096.html \n'))
wx.MessageBox(messageText, "Homepage", wx.OK | wx.ICON_INFORMATION)
def showAboutMessage( self, event ):
messageText = (('Author: Jay Heng \n') +
('Email: hengjie1989@foxmail.com \n'))
wx.MessageBox(messageText, "About", wx.OK | wx.ICON_INFORMATION)
1.5 启用状态栏
状态栏也是一般串口调试助手的标配,用于显示发送/接收数据统计信息以及串口开关状态,因此痞子衡为pzh-py-com也加上了状态栏功能,状态栏主要分为三栏:接收数据统计、发送数据统计、串口状态。
s_recvStatusFieldIndex = 0
s_sendStatusFieldIndex = 1
s_infoStatusFieldIndex = 2
s_recvStatusStr = 'Recv: '
s_recvTotalBytes = 0
s_sendStatusStr = 'Send: '
s_sendTotalBytes = 0
class mainWin(win.com_win):
def openClosePort( self, event ):
if s_serialPort.isOpen():
s_serialPort.close()
self.m_button_openClose.SetLabel('Open')
# 添加代码开始
self.statusBar.SetStatusText(s_serialPort.name + ' is closed', s_infoStatusFieldIndex)
# 添加代码结束
else:
# 添加代码开始
self.statusBar.SetFieldsCount(3)
self.statusBar.SetStatusWidths([150, 150, 400])
# 添加代码结束
self.setPort()
# ...
self.m_button_openClose.SetLabel('Close')
# 添加代码开始
self.statusBar.SetStatusText(s_recvStatusStr + str(s_recvTotalBytes), s_recvStatusFieldIndex)
self.statusBar.SetStatusText(s_sendStatusStr + str(s_sendTotalBytes), s_sendStatusFieldIndex)
self.statusBar.SetStatusText(s_serialPort.name + ' is open, ' +
str(s_serialPort.baudrate) + ', ' +
str(s_serialPort.bytesizes) + ', ' +
s_serialPort.parity + ', ' +
str(s_serialPort.stopbits), s_infoStatusFieldIndex)
# 添加代码结束
s_serialPort.reset_input_buffer()
# ...
def sendData( self, event ):
if s_serialPort.isOpen():
lines = self.m_textCtrl_send.GetNumberOfLines()
if lines != 0:
# ...
s_serialPort.write(data)
# 添加代码开始
global s_sendTotalBytes
s_sendTotalBytes += len(data)
self.statusBar.SetStatusText(s_sendStatusStr + str(s_sendTotalBytes), s_sendStatusFieldIndex)
# 添加代码结束
else:
self.statusBar.SetStatusText(s_serialPort.name + ' is not open !!!', s_infoStatusFieldIndex)
def recvData( self ):
if s_serialPort.isOpen():
num = s_serialPort.inWaiting()
if num != 0:
# ...
self.m_textCtrl_recv.write(data)
# 添加代码开始
global s_recvTotalBytes
s_recvTotalBytes += len(data)
self.statusBar.SetStatusText(s_recvStatusStr + str(s_recvTotalBytes), s_recvStatusFieldIndex)
# 添加代码结束
状态栏实测功能如下:
二、界面优化
2.1 添加串口开关亮灯效果
界面优化的地方有很多,痞子衡简单做了一个与串口开关按钮同步的小灯显示效果,当串口打开时,小灯显示绿色;当串口关闭时,小灯显示黑色;代码里的实现其实就是两张图片之间的切换。
class mainWin(win.com_win):
def openClosePort( self, event ):
if s_serialPort.isOpen():
s_serialPort.close()
self.m_button_openClose.SetLabel('Open')
# 添加代码开始
self.m_bitmap_led.SetBitmap(wx.Bitmap( u"../img/led_black.png?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg==,t_20", wx.BITMAP_TYPE_ANY ))
# 添加代码结束
else:
# ...
self.m_button_openClose.SetLabel('Close')
# 添加代码开始
self.m_bitmap_led.SetBitmap(wx.Bitmap( u"../img/led_green.png?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg==,t_20", wx.BITMAP_TYPE_ANY ))
# 添加代码结束
# ...
至此,串口调试工具pzh-py-com诞生之软件优化痞子衡便介绍完毕了,掌声在哪里~~~