forked from XIVN1987/RTTView
/
RTTView.py
258 lines (194 loc) · 9.74 KB
/
RTTView.py
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#! python2
#coding: utf-8
import os
import sys
import ctypes
import struct
import ConfigParser
import sip
sip.setapi('QString', 2)
from PyQt4 import QtCore, QtGui, uic
from PyQt4.Qwt5 import QwtPlot, QwtPlotCurve
class RingBuffer(ctypes.Structure):
_fields_ = [
('sName', ctypes.POINTER(ctypes.c_char)),
('pBuffer', ctypes.POINTER(ctypes.c_byte)),
('SizeOfBuffer', ctypes.c_uint),
('WrOff', ctypes.c_uint), # Position of next item to be written. 对于aUp: 芯片更新WrOff,主机更新RdOff
('RdOff', ctypes.c_uint), # Position of next item to be read. 对于aDown: 主机更新WrOff,芯片更新RdOff
('Flags', ctypes.c_uint),
]
class SEGGER_RTT_CB(ctypes.Structure): # Control Block
_fields_ = [
('acID', ctypes.c_char * 16),
('MaxNumUpBuffers', ctypes.c_uint),
('MaxNumDownBuffers', ctypes.c_uint),
('aUp', RingBuffer * 2),
('aDown', RingBuffer * 2),
]
'''
from RTTView_UI import Ui_RTTView
class RTTView(QtGui.QWidget, Ui_RTTView):
def __init__(self, parent=None):
super(RTTView, self).__init__(parent)
self.setupUi(self)
'''
class RTTView(QtGui.QWidget):
def __init__(self, parent=None):
super(RTTView, self).__init__(parent)
uic.loadUi('RTTView.ui', self)
self.initSetting()
self.initQwtPlot()
self.rcvbuff = b''
self.tmrRTT = QtCore.QTimer()
self.tmrRTT.setInterval(10)
self.tmrRTT.timeout.connect(self.on_tmrRTT_timeout)
self.tmrRTT.start()
def initSetting(self):
if not os.path.exists('setting.ini'):
open('setting.ini', 'w')
self.conf = ConfigParser.ConfigParser()
self.conf.read('setting.ini')
if not self.conf.has_section('J-Link'):
self.conf.add_section('J-Link')
self.conf.set('J-Link', 'dllpath', '')
self.conf.add_section('Memory')
self.conf.set('Memory', 'StartAddr', '0x20000000')
self.linDLL.setText(self.conf.get('J-Link', 'dllpath').decode('gbk'))
def initQwtPlot(self):
self.PlotData = [0]*1000
self.qwtPlot = QwtPlot(self)
self.qwtPlot.setVisible(False)
self.vLayout.insertWidget(0, self.qwtPlot)
self.PlotCurve = QwtPlotCurve()
self.PlotCurve.attach(self.qwtPlot)
self.PlotCurve.setData(range(1, len(self.PlotData)+1), self.PlotData)
@QtCore.pyqtSlot()
def on_btnOpen_clicked(self):
if self.btnOpen.text() == u'打开连接':
try:
self.jlink = ctypes.cdll.LoadLibrary(self.linDLL.text())
err_buf = (ctypes.c_char * 64)()
self.jlink.JLINKARM_ExecCommand('Device = Cortex-M0', err_buf, 64)
self.jlink.JLINKARM_TIF_Select(1)
self.jlink.JLINKARM_SetSpeed(8000)
buff = ctypes.create_string_buffer(1024)
Addr = int(self.conf.get('Memory', 'StartAddr'), 16)
for i in range(256):
self.jlink.JLINKARM_ReadMem(Addr + 1024*i, 1024, buff)
index = buff.raw.find('SEGGER RTT')
if index != -1:
self.RTTAddr = Addr + 1024*i + index
buff = ctypes.create_string_buffer(ctypes.sizeof(SEGGER_RTT_CB))
self.jlink.JLINKARM_ReadMem(self.RTTAddr, ctypes.sizeof(SEGGER_RTT_CB), buff)
rtt_cb = SEGGER_RTT_CB.from_buffer(buff)
self.aUpAddr = self.RTTAddr + 16 + 4 + 4
self.aDownAddr = self.aUpAddr + ctypes.sizeof(RingBuffer) * rtt_cb.MaxNumUpBuffers
self.txtMain.append('\n_SEGGER_RTT @ 0x%08X with %d aUp and %d aDown\n' %(self.RTTAddr, rtt_cb.MaxNumUpBuffers, rtt_cb.MaxNumDownBuffers))
break
else:
raise Exception('Can not find _SEGGER_RTT')
except Exception as e:
self.txtMain.append('\n%s\n' %str(e))
else:
self.linDLL.setEnabled(False)
self.btnDLL.setEnabled(False)
self.btnOpen.setText(u'关闭连接')
else:
self.linDLL.setEnabled(True)
self.btnDLL.setEnabled(True)
self.btnOpen.setText(u'打开连接')
def aUpRead(self):
buf = ctypes.create_string_buffer(ctypes.sizeof(RingBuffer))
self.jlink.JLINKARM_ReadMem(self.aUpAddr, ctypes.sizeof(RingBuffer), buf)
aUp = RingBuffer.from_buffer(buf)
if aUp.RdOff == aUp.WrOff:
str = ctypes.create_string_buffer(0)
elif aUp.RdOff < aUp.WrOff:
cnt = aUp.WrOff - aUp.RdOff
str = ctypes.create_string_buffer(cnt)
self.jlink.JLINKARM_ReadMem(ctypes.cast(aUp.pBuffer, ctypes.c_void_p).value + aUp.RdOff, cnt, str)
aUp.RdOff += cnt
self.jlink.JLINKARM_WriteU32(self.aUpAddr + 4*4, aUp.RdOff)
else:
cnt = aUp.SizeOfBuffer - aUp.RdOff
str = ctypes.create_string_buffer(cnt)
self.jlink.JLINKARM_ReadMem(ctypes.cast(aUp.pBuffer, ctypes.c_void_p).value + aUp.RdOff, cnt, str)
aUp.RdOff = 0 #这样下次再读就会进入执行上个条件
self.jlink.JLINKARM_WriteU32(self.aUpAddr + 4*4, aUp.RdOff)
return str.raw
def on_tmrRTT_timeout(self):
if self.btnOpen.text() == u'关闭连接':
try:
self.rcvbuff += self.aUpRead()
if self.txtMain.isVisible():
if self.chkHEXShow.isChecked():
text = ''.join('%02X ' %ord(c) for c in self.rcvbuff)
else:
text = self.rcvbuff
if len(self.txtMain.toPlainText()) > 25000: self.txtMain.clear()
self.txtMain.moveCursor(QtGui.QTextCursor.End)
self.txtMain.insertPlainText(text)
self.rcvbuff = b''
else:
if self.rcvbuff.rfind(',') == -1: return
d = [int(x) for x in self.rcvbuff[0:self.rcvbuff.rfind(',')].split(',')]
for x in d:
self.PlotData.pop(0)
self.PlotData.append(x)
self.PlotCurve.setData(range(1, len(self.PlotData)+1), self.PlotData)
self.qwtPlot.replot()
self.rcvbuff = self.rcvbuff[self.rcvbuff.rfind(',')+1:]
except Exception as e:
self.rcvbuff = b''
self.txtMain.append('\n%s\n' %str(e))
def aDownWrite(self, bytes):
buf = ctypes.create_string_buffer(ctypes.sizeof(RingBuffer))
self.jlink.JLINKARM_ReadMem(self.aDownAddr, ctypes.sizeof(RingBuffer), buf)
aDown = RingBuffer.from_buffer(buf)
if aDown.WrOff >= aDown.RdOff:
if aDown.RdOff != 0: cnt = min(aDown.SizeOfBuffer - aDown.WrOff, len(bytes))
else: cnt = min(aDown.SizeOfBuffer - 1 - aDown.WrOff, len(bytes)) # 写入操作不能使得 aDown.WrOff == aDown.RdOff,以区分满和空
str = ctypes.create_string_buffer(bytes[:cnt])
self.jlink.JLINKARM_WriteMem(ctypes.cast(aDown.pBuffer, ctypes.c_void_p).value + aDown.WrOff, cnt, str)
aDown.WrOff += cnt
if aDown.WrOff == aDown.SizeOfBuffer: aDown.WrOff = 0
bytes = bytes[cnt:]
if bytes and aDown.RdOff != 0 and aDown.RdOff != 1: # != 0 确保 aDown.WrOff 折返回 0,!= 1 确保有空间可写入
cnt = min(aDown.RdOff - 1 - aDown.WrOff, len(bytes)) # - 1 确保写入操作不导致WrOff与RdOff指向同一位置
str = ctypes.create_string_buffer(bytes[:cnt])
self.jlink.JLINKARM_WriteMem(ctypes.cast(aDown.pBuffer, ctypes.c_void_p).value + aDown.WrOff, cnt, str)
aDown.WrOff += cnt
self.jlink.JLINKARM_WriteU32(self.aDownAddr + 4*3, aDown.WrOff)
@QtCore.pyqtSlot()
def on_btnSend_clicked(self):
if self.btnOpen.text() == u'关闭连接':
text = self.txtSend.toPlainText()
try:
if self.chkHEXSend.isChecked():
bytes = ''.join([chr(int(x, 16)) for x in text.split()])
else:
bytes = text
self.aDownWrite(bytes)
except Exception as e:
self.txtMain.append('\n%s\n' %str(e))
@QtCore.pyqtSlot()
def on_btnDLL_clicked(self):
path = QtGui.QFileDialog.getOpenFileName(caption=u'JLinkARM.dll路径', filter=u'动态链接库文件 (*.dll)', directory=self.linDLL.text())
if path != '':
self.linDLL.setText(path)
@QtCore.pyqtSlot(int)
def on_chkWavShow_stateChanged(self, state):
self.qwtPlot.setVisible(state == QtCore.Qt.Checked)
self.txtMain.setVisible(state == QtCore.Qt.Unchecked)
@QtCore.pyqtSlot()
def on_btnClear_clicked(self):
self.txtMain.clear()
def closeEvent(self, evt):
self.conf.set('J-Link', 'dllpath', self.linDLL.text().encode('gbk'))
self.conf.write(open('setting.ini', 'w'))
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
rtt = RTTView()
rtt.show()
app.exec_()