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RTTView.py
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#! python3
import os
import re
import sys
import ctypes
import struct
import datetime
import collections
import configparser
from PyQt5 import QtCore, QtGui, QtWidgets, uic
from PyQt5.QtCore import pyqtSlot, pyqtSignal, Qt
from PyQt5.QtWidgets import QApplication, QWidget, QDialog, QFileDialog, QTableWidgetItem
from PyQt5.QtChart import QChart, QChartView, QLineSeries, QLegend
import jlink
import xlink
os.environ['PATH'] = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'libusb-1.0.24/MinGW64/dll') + os.pathsep + os.environ['PATH']
class RingBuffer(ctypes.Structure):
_fields_ = [
('sName', ctypes.c_uint), # ctypes.POINTER(ctypes.c_char)，64位Python中 ctypes.POINTER 是64位的，与目标芯片不符
('pBuffer', ctypes.c_uint), # 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),
]
Variable = collections.namedtuple('Variable', 'name addr size') # variable from *.map file
Valuable = collections.namedtuple('Valuable', 'name addr size typ fmt show') # variable to read and display
'''
from RTTView_UI import Ui_RTTView
class RTTView(QWidget, Ui_RTTView):
def __init__(self, parent=None):
super(RTTView, self).__init__(parent)
self.setupUi(self)
'''
class RTTView(QWidget):
def __init__(self, parent=None):
super(RTTView, self).__init__(parent)
uic.loadUi('RTTView.ui', self)
self.tblVar.horizontalHeader().setSectionResizeMode(0, QtWidgets.QHeaderView.Stretch)
self.Vars = {} # {name: Variable}
self.Vals = {} # {row: Valuable}
self.initSetting()
self.initQwtPlot()
self.rcvbuff = b''
self.rcvfile = None
self.tmrRTT = QtCore.QTimer()
self.tmrRTT.setInterval(10)
self.tmrRTT.timeout.connect(self.on_tmrRTT_timeout)
self.tmrRTT.start()
self.tmrRTT_Cnt = 0
self.tmrRTT_Sav = 0
def initSetting(self):
if not os.path.exists('setting.ini'):
open('setting.ini', 'w', encoding='utf-8')
self.conf = configparser.ConfigParser()
self.conf.read('setting.ini', encoding='utf-8')
if not self.conf.has_section('link'):
self.conf.add_section('link')
self.conf.set('link', 'jlink', '')
self.conf.set('link', 'select', '')
self.conf.set('link', 'address', '["0x20000000"]')
self.conf.set('link', 'variable', '{}')
self.conf.add_section('encode')
self.conf.set('encode', 'input', 'ASCII')
self.conf.set('encode', 'output', 'ASCII')
self.conf.set('encode', 'oenter', r'\r\n') # output enter (line feed)
self.conf.add_section('display')
self.conf.set('display', 'ncurve', '4') # max curve number supported
self.conf.set('display', 'npoint', '1000')
self.conf.add_section('history')
self.conf.set('history', 'hist1', '11 22 33 AA BB CC')
self.cmbDLL.addItem(self.conf.get('link', 'jlink'))
self.daplink_detect() # add DAPLink
index = self.cmbDLL.findText(self.conf.get('link', 'select'))
self.cmbDLL.setCurrentIndex(index if index != -1 else 0)
self.cmbAddr.addItems(eval(self.conf.get('link', 'address')))
self.cmbICode.setCurrentIndex(self.cmbICode.findText(self.conf.get('encode', 'input')))
self.cmbOCode.setCurrentIndex(self.cmbOCode.findText(self.conf.get('encode', 'output')))
self.cmbEnter.setCurrentIndex(self.cmbEnter.findText(self.conf.get('encode', 'oenter')))
self.N_CURVE = int(self.conf.get('display', 'ncurve'), 10)
self.N_POINT = int(self.conf.get('display', 'npoint'), 10)
self.txtSend.setPlainText(self.conf.get('history', 'hist1'))
self.Vals = eval(self.conf.get('link', 'variable'))
for row, val in self.Vals.items():
self.tblVar.setItem(row, 0, QTableWidgetItem(val.name))
self.tblVar.setItem(row, 1, QTableWidgetItem(f'{val.addr:08X}'))
self.tblVar.setItem(row, 2, QTableWidgetItem(val.typ))
self.tblVar.setItem(row, 3, QTableWidgetItem('显示' if val.show else '不显示'))
self.tblVar.setItem(row, 4, QTableWidgetItem('删除'))
self.tblVar.insertRow(self.tblVar.rowCount())
def initQwtPlot(self):
self.PlotData = [[0]*self.N_POINT for i in range(self.N_CURVE)]
self.PlotPoint = [[QtCore.QPointF(j, 0) for j in range(self.N_POINT)] for i in range(self.N_CURVE)]
self.PlotChart = QChart()
self.ChartView = QChartView(self.PlotChart)
self.ChartView.setVisible(False)
self.vLayout.insertWidget(0, self.ChartView)
self.PlotCurve = [QLineSeries() for i in range(self.N_CURVE)]
def daplink_detect(self):
try:
from pyocd.probe import aggregator
self.daplinks = aggregator.DebugProbeAggregator.get_all_connected_probes()
if len(self.daplinks) != self.cmbDLL.count() - 1:
for i in range(1, self.cmbDLL.count()):
self.cmbDLL.removeItem(i)
for i, daplink in enumerate(self.daplinks):
self.cmbDLL.addItem(daplink.product_name)
except Exception as e:
pass
@pyqtSlot()
def on_btnOpen_clicked(self):
if self.btnOpen.text() == '打开连接':
try:
if self.cmbDLL.currentIndex() == 0:
self.xlk = xlink.XLink(jlink.JLink(self.cmbDLL.currentText(), 'Cortex-M0'))
else:
from pyocd.coresight import dap, ap, cortex_m
daplink = self.daplinks[self.cmbDLL.currentIndex() - 1]
daplink.open()
_dp = dap.DebugPort(daplink, None)
_dp.init()
_dp.power_up_debug()
_ap = ap.AHB_AP(_dp, 0)
_ap.init()
self.xlk = xlink.XLink(cortex_m.CortexM(None, _ap))
if self.chkSave.isChecked():
self.rcvfile = open(datetime.datetime.now().strftime("rcv_%y%m%d%H%M%S.txt"), 'w')
if re.match(r'0[xX][0-9a-fA-F]{8}', self.cmbAddr.currentText()):
addr = int(self.cmbAddr.currentText(), 16)
for i in range(128):
data = self.xlk.read_mem_U8(addr + 1024 * i, 1024 + 32) # 多读32字节，防止搜索内容在边界处
index = bytes(data).find(b'SEGGER RTT')
if index != -1:
self.RTTAddr = addr + 1024 * i + index
data = self.xlk.read_mem_U8(self.RTTAddr, ctypes.sizeof(SEGGER_RTT_CB))
rtt_cb = SEGGER_RTT_CB.from_buffer(bytearray(data))
self.aUpAddr = self.RTTAddr + 16 + 4 + 4
self.aDownAddr = self.aUpAddr + ctypes.sizeof(RingBuffer) * rtt_cb.MaxNumUpBuffers
self.txtMain.append(f'\n_SEGGER_RTT @ 0x{self.RTTAddr:08X} with {rtt_cb.MaxNumUpBuffers} aUp and {rtt_cb.MaxNumDownBuffers} aDown\n')
break
else:
raise Exception('Can not find _SEGGER_RTT')
self.rtt_cb = True
else:
self.rtt_cb = False
except Exception as e:
self.txtMain.append(f'\n{str(e)}\n')
else:
self.cmbDLL.setEnabled(False)
self.btnDLL.setEnabled(False)
self.cmbAddr.setEnabled(False)
self.btnOpen.setText('关闭连接')
else:
if self.rcvfile and not self.rcvfile.closed:
self.rcvfile.close()
self.xlk.close()
self.cmbDLL.setEnabled(True)
self.btnDLL.setEnabled(True)
self.cmbAddr.setEnabled(True)
self.btnOpen.setText('打开连接')
def aUpRead(self):
data = self.xlk.read_mem_U8(self.aUpAddr, ctypes.sizeof(RingBuffer))
aUp = RingBuffer.from_buffer(bytearray(data))
if aUp.RdOff <= aUp.WrOff:
cnt = aUp.WrOff - aUp.RdOff
else:
cnt = aUp.SizeOfBuffer - aUp.RdOff
if 0 < cnt < 1024*1024:
data = self.xlk.read_mem_U8(ctypes.cast(aUp.pBuffer, ctypes.c_void_p).value + aUp.RdOff, cnt)
aUp.RdOff = (aUp.RdOff + cnt) % aUp.SizeOfBuffer
self.xlk.write_U32(self.aUpAddr + 4*4, aUp.RdOff)
else:
data = []
return bytes(data)
def aDownWrite(self, bytes):
data = self.xlk.read_mem_U8(self.aDownAddr, ctypes.sizeof(RingBuffer))
aDown = RingBuffer.from_buffer(bytearray(data))
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
self.xlk.write_mem(ctypes.cast(aDown.pBuffer, ctypes.c_void_p).value + aDown.WrOff, bytes[:cnt])
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
self.xlk.write_mem(ctypes.cast(aDown.pBuffer, ctypes.c_void_p).value + aDown.WrOff, bytes[:cnt])
aDown.WrOff += cnt
self.xlk.write_U32(self.aDownAddr + 4*3, aDown.WrOff)
def on_tmrRTT_timeout(self):
self.tmrRTT_Cnt += 1
if self.btnOpen.text() == '关闭连接':
try:
if self.rtt_cb:
rcvdbytes = self.aUpRead()
else:
vals = []
for name, addr, size, typ, fmt, show in self.Vals.values():
if show:
buf = self.xlk.read_mem_U8(addr, size)
vals.append(struct.unpack(fmt, bytes(buf))[0])
rcvdbytes = b'\t'.join(f'{val}'.encode() for val in vals) + b',\n'
except Exception as e:
rcvdbytes = b''
if rcvdbytes:
if self.rcvfile and not self.rcvfile.closed:
self.rcvfile.write(rcvdbytes.decode('latin-1'))
self.rcvbuff += rcvdbytes
if self.chkWave.isChecked():
if b',' in self.rcvbuff:
try:
d = self.rcvbuff[0:self.rcvbuff.rfind(b',')].split(b',') # [b'12', b'34'] or [b'12 34', b'56 78']
if self.cmbICode.currentText() != 'HEX':
d = [[float(x) for x in X.strip().split()] for X in d] # [[12], [34]] or [[12, 34], [56, 78]]
else:
d = [[int(x, 16) for x in X.strip().split()] for X in d] # for example, d = [b'12', b'AA', b'5A5A']
for arr in d:
for i, x in enumerate(arr):
if i == self.N_CURVE: break
self.PlotData[i].pop(0)
self.PlotData[i].append(x)
self.PlotPoint[i].pop(0)
self.PlotPoint[i].append(QtCore.QPointF(999, x))
self.rcvbuff = self.rcvbuff[self.rcvbuff.rfind(b',')+1:]
if self.tmrRTT_Cnt - self.tmrRTT_Sav > 3:
self.tmrRTT_Sav = self.tmrRTT_Cnt
if len(d[-1]) != len(self.PlotChart.series()):
for series in self.PlotChart.series():
self.PlotChart.removeSeries(series)
for i in range(min(len(d[-1]), self.N_CURVE)):
self.PlotCurve[i].setName(f'Curve {i+1}')
self.PlotChart.addSeries(self.PlotCurve[i])
self.PlotChart.createDefaultAxes()
for i in range(len(self.PlotChart.series())):
for j, point in enumerate(self.PlotPoint[i]):
point.setX(j)
self.PlotCurve[i].replace(self.PlotPoint[i])
miny = min([min(d) for d in self.PlotData[:len(self.PlotChart.series())]])
maxy = max([max(d) for d in self.PlotData[:len(self.PlotChart.series())]])
self.PlotChart.axisY().setRange(miny, maxy)
self.PlotChart.axisX().setRange(0000, self.N_POINT)
except Exception as e:
self.rcvbuff = b''
print(e)
else:
text = ''
if self.cmbICode.currentText() == 'ASCII':
text = ''.join([chr(x) for x in self.rcvbuff])
self.rcvbuff = b''
elif self.cmbICode.currentText() == 'HEX':
text = ' '.join([f'{x:02X}' for x in self.rcvbuff]) + ' '
self.rcvbuff = b''
elif self.cmbICode.currentText() == 'GBK':
while len(self.rcvbuff):
if self.rcvbuff[0:1].decode('GBK', 'ignore'):
text += self.rcvbuff[0:1].decode('GBK')
self.rcvbuff = self.rcvbuff[1:]
elif len(self.rcvbuff) > 1 and self.rcvbuff[0:2].decode('GBK', 'ignore'):
text += self.rcvbuff[0:2].decode('GBK')
self.rcvbuff = self.rcvbuff[2:]
elif len(self.rcvbuff) > 1:
text += chr(self.rcvbuff[0])
self.rcvbuff = self.rcvbuff[1:]
else:
break
elif self.cmbICode.currentText() == 'UTF-8':
while len(self.rcvbuff):
if self.rcvbuff[0:1].decode('UTF-8', 'ignore'):
text += self.rcvbuff[0:1].decode('UTF-8')
self.rcvbuff = self.rcvbuff[1:]
elif len(self.rcvbuff) > 1 and self.rcvbuff[0:2].decode('UTF-8', 'ignore'):
text += self.rcvbuff[0:2].decode('UTF-8')
self.rcvbuff = self.rcvbuff[2:]
elif len(self.rcvbuff) > 2 and self.rcvbuff[0:3].decode('UTF-8', 'ignore'):
text += self.rcvbuff[0:3].decode('UTF-8')
self.rcvbuff = self.rcvbuff[3:]
elif len(self.rcvbuff) > 3 and self.rcvbuff[0:4].decode('UTF-8', 'ignore'):
text += self.rcvbuff[0:4].decode('UTF-8')
self.rcvbuff = self.rcvbuff[4:]
elif len(self.rcvbuff) > 3:
text += chr(self.rcvbuff[0])
self.rcvbuff = self.rcvbuff[1:]
else:
break
if len(self.txtMain.toPlainText()) > 25000: self.txtMain.clear()
self.txtMain.moveCursor(QtGui.QTextCursor.End)
self.txtMain.insertPlainText(text)
else:
if self.tmrRTT_Cnt % 100 == 1:
self.daplink_detect()
@pyqtSlot()
def on_btnSend_clicked(self):
if self.btnOpen.text() == '关闭连接':
text = self.txtSend.toPlainText()
if self.cmbOCode.currentText() == 'HEX':
try:
self.aDownWrite(bytes([int(x, 16) for x in text.split()]))
except Exception as e:
print(e)
else:
if self.cmbEnter.currentText() == r'\r\n':
text = text.replace('\n', '\r\n')
try:
self.aDownWrite(text.encode(self.cmbOCode.currentText()))
except Exception as e:
print(e)
@pyqtSlot()
def on_btnDLL_clicked(self):
dllpath, filter = QFileDialog.getOpenFileName(caption='JLink_x64.dll path', filter='动态链接库文件 (*.dll)', directory=self.cmbDLL.itemText(0))
if dllpath != '':
self.cmbDLL.setItemText(0, dllpath)
@pyqtSlot()
def on_btnAddr_clicked(self):
mappath, filter = QFileDialog.getOpenFileName(caption='MDK .map file path', filter='MDK .map file (*.map)', directory=self.cmbAddr.currentText())
if mappath != '':
self.cmbAddr.insertItem(0, mappath)
self.cmbAddr.setCurrentIndex(0)
@pyqtSlot(str)
def on_cmbAddr_currentIndexChanged(self, text):
if re.match(r'0[xX][0-9a-fA-F]{8}', text):
self.tblVar.setVisible(False)
self.gLayout2.removeWidget(self.tblVar)
self.txtSend.setVisible(True)
self.btnSend.setVisible(True)
self.cmbICode.setEnabled(True)
self.cmbOCode.setEnabled(True)
self.cmbEnter.setEnabled(True)
else:
self.txtSend.setVisible(False)
self.btnSend.setVisible(False)
self.cmbICode.setEnabled(False)
self.cmbOCode.setEnabled(False)
self.cmbEnter.setEnabled(False)
self.gLayout2.addWidget(self.tblVar, 0, 0, 4, 2)
self.tblVar.setVisible(True)
if os.path.exists(text) and os.path.isfile(text):
text = open(text, 'r', encoding='utf-8', errors='ignore').read()
for match in re.finditer(r'([_A-Za-z][_\w]+)\s+(0x[\dA-Fa-f]+)\s+Data\s+(\d+)', text):
if match.group(3) in ('1', '2', '4', '8'):
self.Vars[match.group(1)] = Variable(match.group(1), int(match.group(2), 16), int(match.group(3)))
for var in self.Vars.values():
print(f'{var.name:30s} @ {var.addr:08X}, len={var.size}')
@pyqtSlot(int, int)
def on_tblVar_cellDoubleClicked(self, row, column):
if self.btnOpen.text() == '关闭连接': return
if column < 3:
if len(self.Vals) == self.N_CURVE: return
dlg = VarDialog(self, row)
if dlg.exec() == QDialog.Accepted:
var = self.Vars[dlg.cmbVar.currentText()]
typ, fmt = dlg.cmbType.currentText(), dlg.cmbType.currentData()
self.Vals[row] = Valuable(var.name, var.addr, var.size, typ, fmt, True)
self.tblVar.setItem(row, 0, QTableWidgetItem(var.name))
self.tblVar.setItem(row, 1, QTableWidgetItem(f'{var.addr:08X}'))
self.tblVar.setItem(row, 2, QTableWidgetItem(typ))
self.tblVar.setItem(row, 3, QTableWidgetItem('显示'))
self.tblVar.setItem(row, 4, QTableWidgetItem('删除'))
if row == self.tblVar.rowCount() - 1: # 最后一行
self.tblVar.insertRow(self.tblVar.rowCount())
self.PlotCurve[row].setName(var.name)
if self.PlotCurve[row] not in self.PlotChart.series():
self.PlotChart.addSeries(self.PlotCurve[row])
self.PlotChart.createDefaultAxes()
elif column == 3:
if row != self.tblVar.rowCount() - 1: # 非最后一行
self.Vals[row] = self.Vals[row]._replace(show = not self.Vals[row].show)
self.tblVar.item(row, 3).setText('显示' if self.Vals[row].show else '不显示')
self.PlotCurve[row].setPointsVisible(self.Vals[row].show)
elif column == 4:
if row != self.tblVar.rowCount() - 1:
if row == len(self.Vals) - 1: # 删除最后一行数据
del self.Vals[row]
else:
for i in range(row, len(self.Vals)-1):
self.Vals[i] = self.Vals[i+1]
del self.Vals[i+1]
self.tblVar.removeRow(row)
for series in self.PlotChart.series():
self.PlotChart.removeSeries(series)
for row in self.Vals.keys():
self.PlotCurve[row].setName(self.Vals[row].name)
if self.Vals[row].show:
self.PlotChart.addSeries(self.PlotCurve[row])
self.PlotChart.createDefaultAxes()
@pyqtSlot(int)
def on_chkWave_stateChanged(self, state):
self.ChartView.setVisible(state == Qt.Checked)
self.txtMain.setVisible(state == Qt.Unchecked)
@pyqtSlot()
def on_btnClear_clicked(self):
self.txtMain.clear()
def closeEvent(self, evt):
if self.rcvfile and not self.rcvfile.closed:
self.rcvfile.close()
self.conf.set('link', 'jlink', self.cmbDLL.itemText(0))
self.conf.set('link', 'select', self.cmbDLL.currentText())
self.conf.set('encode', 'input', self.cmbICode.currentText())
self.conf.set('encode', 'output', self.cmbOCode.currentText())
self.conf.set('encode', 'oenter', self.cmbEnter.currentText())
self.conf.set('history', 'hist1', self.txtSend.toPlainText())
addrs = [self.cmbAddr.currentText()] + [self.cmbAddr.itemText(i) for i in range(self.cmbAddr.count())]
self.conf.set('link', 'address', repr(list(collections.OrderedDict.fromkeys(addrs)))) # 保留顺序去重
self.conf.set('link', 'variable', repr(self.Vals))
self.conf.write(open('setting.ini', 'w', encoding='utf-8'))
class VarDialog(QDialog):
def __init__(self, parent, row):
super(VarDialog, self).__init__(parent)
uic.loadUi('VarDialog.ui', self)
self.cmbVar.addItems(parent.Vars.keys())
if parent.tblVar.item(row, 0):
self.cmbVar.setCurrentText(parent.tblVar.item(row, 0).text())
self.cmbType.setCurrentText(parent.tblVar.item(row, 2).text())
len2type = {
1: [('int8', 'b'), ('uint8', 'B')],
2: [('int16', 'h'), ('uint16', 'H')],
4: [('int32', 'i'), ('uint32', 'I'), ('float', 'f')],
8: [('int64', 'q'), ('uint64', 'Q'), ('double', 'd')]
}
@pyqtSlot(str)
def on_cmbVar_currentIndexChanged(self, name):
size = self.parent().Vars[name].size
self.cmbType.clear()
for typ, fmt in self.len2type[size]:
self.cmbType.addItem(typ, fmt)
if __name__ == "__main__":
app = QApplication(sys.argv)
rtt = RTTView()
rtt.show()
app.exec()