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Copy pathRigol_wfm_acquisition.py
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Rigol_wfm_acquisition.py
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# -*- coding: utf-8 -*-
import visa
import os
import sys
import time
# from pyvisa.resources import MessageBasedResource
print(sys.version)
pwd = os.getcwd()
print('Start at ' + time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()))
def read_bmp():
# PC端通过VISA接口发送命令，仪器响应命令后直接将当前显示图像的位图数据流返回至PC端缓存区。
global rm, inst
finalpath = "_".join(
["Screenshot",
time.strftime("%Y%m%d_%H%M%S.bmp", time.localtime())])
f = open(finalpath, 'wb')
inst.write(':DISPlay:DATA?')
data = inst.read_raw() # 返回的是bytes类型
bmp = data[11:-1]
# 返回的数据流中含有TMC数据头，需要去掉才是符合标准的位图数据流。
# 数据结束位置的结束符'\n'(0X0A)需要去掉。
f.write(bmp)
print('Finished, Storaged screenshot BMP image to: ' +
os.path.join(pwd, finalpath))
def read_wavform(read_length, *, Channel):
global rm, inst
inst.write(':stop')
if ("CH1" == Channel):
inst.write(':WAV:SOUR CHAN1')
print(':wavform:source channel1')
print(inst.query(':WAVeform:SOURce?'))
if ("CH2" == Channel):
inst.write(':WAV:SOUR CHAN2')
print(':wavform:source channel2')
print(inst.query(':WAVeform:SOURce?'))
inst.write(':WAVeform:MODE RAW')
inst.write(':WAVeform:FORMat byte') # word|byte|ascii
code = 0 # 0 不编码 1 编码
Yorigin = int(inst.query(':WAVeform:YORigin?'))
Yreference = int(inst.query(':WAVeform:YREFerence?')) # 127
Yincrement = float(inst.query(':WAVeform:YINCrement?'))
Sample_rate = (inst.query(':ACQuire:SRATe?')).strip().replace(
'+', '').replace('0000e0', 'e').replace('.', '_') # 剔除空字符，"\n""+" 和"0"
# print(Yorigin)
# print(Yreference)
# print(Yincrement)
finalpath = "_".join([
Channel, 'SampleRate', Sample_rate, 'length',
str(read_length),
time.strftime("%Y%m%d_%H%M%S.txt", time.localtime())
])
f = open(finalpath, 'w')
package = 249999
start_position = 1
data = []
outstr = b''
if read_length <= package:
stop_position = read_length
inst.write(':WAVeform:STARt %d' % start_position)
inst.write(':WAVeform:STOP %d' % stop_position)
inst.write(':WAV:DATA?')
data = inst.read_raw() # 返回的是bytes类型
if code == 1:
outstr += data[11:-1].decode('ascii') # 将bytes类型解码为string，方便拼接
else:
for x in data[11:-1]:
x = (x - Yreference - Yorigin) * Yincrement # 转换为电压
# f.write(str(x))
f.write('{0:.4e}'.format(x))
f.write('\n')
# print(outstr)
# for x in data[11:-1]:
# x = (x - Yreference - Yorigin) * Yincrement
# f.write(str(x))
# f.write('\n')
# data.append(inst.query_ascii_values(':WAV:DATA?')[11:])
else:
times = read_length // package
for i in range(times):
print(
'{CH},分块存储，{current_time:>2}/{total_time}; '.format(
CH=Channel, current_time=i + 1, total_time=times + 1),
end='')
process_bar = (i + 1) / (times + 1) # 进度条变量
print('#' * int(20 * process_bar),
'.' * int(20 - 20 * process_bar), '[{0:2.2f}%]'.format(
100 * process_bar)) # 输出进度条
start_position = 1 + package * i
stop_position = package * (i + 1)
# print('strat= %d' % start_position)
# print('stop= %d' % stop_position)
inst.write(':WAVeform:STARt %d' % start_position)
inst.write(':WAVeform:STOP %d' % stop_position)
# data.append(inst.query_ascii_values(':WAV:DATA?')[11:])
inst.write(':WAV:DATA?')
data = inst.read_raw() # 返回的是bytes类型
if code == 1:
outstr += data[11:-1].decode('ascii') # 将bytes类型解码为string，方便拼接
else:
for x in data[11:-1]:
x = (x - Yreference - Yorigin) * Yincrement # 转换为电压
# f.write(str(x))
f.write('{0:.4e}'.format(x))
f.write('\n')
i = i + 1
print(
'{CH},分块存储，{current_time:>2}/{total_time}. '.format(
CH=Channel, current_time=i + 1, total_time=times + 1),
end='')
process_bar = (i + 1) / (times + 1) # 进度条变量
print('#' * int(20 * process_bar), '.' * int(20 - 20 * process_bar),
'[{0:2.2f}%]'.format(100 * process_bar)) # 输出进度条
start_position = 1 + package * i
# print('strat= %d' % start_position)
# print('stop= %d' % read_length)
inst.write(':WAVeform:STARt %d' % start_position)
inst.write(':WAVeform:STOP %d' % read_length)
inst.write(':WAV:DATA?')
data = inst.read_raw() # 返回的是bytes类型
if code == 1:
outstr += data[11:-1].decode('utf-8') # 将bytes类型解码为string，方便拼接
else:
for x in data[11:-1]:
x = (x - Yreference - Yorigin) * Yincrement # 转换为电压
# f.write(str(x))
f.write('{0:.4e}'.format(x))
f.write('\n')
# dataarray = bytes(b"#9000200000WWWW\n")
# dataarray = bytes(data)
# output = data[11:]
# print(output)
# print(len(output))
# print(len(data))
# print(type(data))
# print(type(dataarray))
if code == 1:
finalbytes = outstr.encode()
for x in finalbytes:
x = (x - Yreference - Yorigin) * Yincrement # 转换为电压
f.write(str(x))
f.write('\n')
f.close()
print('Finished, Storage waveform to: ' + os.path.join(pwd, finalpath))
print('')
# inst.close()
# print(inst.query(':WAVeform:STATus?'))
rm = visa.ResourceManager()
# print(rm.list_resources())
inst = rm.open_resource('USB0::6833::1200::DS2G181000049::0::INSTR')
inst.timeout = 5000
inst.read_termination = '\n'
print(inst)
print(inst.query('*IDN?'))
# inst.write(':autoscale')
inst.write(':CHAN2:DISP 1')
inst.write(':CHAN1:DISP 1')
inst.write(':run')
inst.write(':ACQuire:MDEPth 7000000') # 设置存储深度
print('当前存储深度: ', inst.query(':ACQuire:MDEPth?').strip()) # 获取存储深度
# time.sleep(3)
inst.write(':single')
time.sleep(0.5)
# inst.write(':tforce')
time.sleep(3)
# inst.write(':stop')
# inst.write(':SAVE:IMAGe:FACTors 1')# 打开或关闭图像存储时的参数保存功能
# inst.write(':SAVE:IMAGe D:\\20171217.png')
# 分块读取模式
read_bmp()
read_wavform(7000000, Channel='CH1')
time.sleep(2)
# print(inst.query(':wavform:source?'))
read_wavform(7000000, Channel='CH2')
# print(inst.query(':wavform:source?'))
# f = open('D:\\YY\\RIGOL\\new.txt', 'w')
# f.write(data)
# f.close()
# for idata in bytearray(data,'ascii'):
# YREFerence = 0
# YORigin = 0
# YINCrement = 1
# out = (idata - YREFerence - YORigin) * YINCrement
# # print(out)
# # print(i)
# f.write(str(out))
# f.write('\n')
# # print(idata)
# # print(type(idata))
# f.close()
print('Finished at ' + time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()))
inst.close()