I'm using a BCF2000 Behringer fader as input to control a robot using ROS. Everything was working fine, but suddenly it stopped working. By suddenly I mean after I got to word after a week off. I need to know if it's a hardware or software problem (maybe somebody drop it off while I was gone? I don't think so but I cannot find a bug). I'm running only a python module that reads the data from the fader and publishes it in ROS to find the problem, which is that I cannot make the sliders of the fader move.
Basically, the python module reads two integers from the argument list. If a third one is given, all values of the fader should be put to 0 (sliders and buttons). The first integer is the input device id, and the second is the output device id. This is:
if len(sys.argv) > 1:
input_dev = int(sys.argv[1])
else:
input_dev = pygame.midi.get_default_input_id()
print "Using DEFAULT input device %d" % input_dev
if input_dev == -1:
print "No default MIDI input device"
exit(-1)
print "Using input device %d" % input_dev
if len(sys.argv) > 2:
output_dev = int(sys.argv[2])
else:
output_dev = pygame.midi.get_default_output_id()
print "Using DEFAULT output device %d" % input_dev
if output_dev == -1:
print "No default MIDI output device"
exit(-1)
print "Using output device %d" % output_dev
controller = pygame.midi.Input(input_dev)
controller_input = pygame.midi.Output(output_dev)
The thing is that I don't know how to find the correct input device number. For the last month I was calling it using '3' and '2', meaning:
me#mycpu:ros$ rosrun bcf2000 bcf2000_driver.py 3 2
if I make an echo of the published data, I get all the data published when I move any slider or press a button. For example:
me#mycpu:ros$ rostopic echo /bcf2000/joy
header:
seq: 1
stamp:
secs: 1441969279
nsecs: 677656888
frame_id: ''
axes: [21.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 69.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
buttons: [127, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
but if I write to the fader, the sliders won't move. Again, this code was working a few days ago. I'm 100% sure is the same code according to the GIT repository log. For example, putting everything to 0:
for i in range(1,93):
controller_input.write([[[176, i, 0, 0], 0]])
where the fader has 93 channels.
It may be that I'm using the wrong output device number. I've changed the number between 0 and 10 and nothing. How do I find out what is the correct device number? How do I debug that is actually a software issue (maybe a OS issue, I don't know) or a hardware issue? The last is very unlikely, since it would be a very selective hardware issue. But I may be mistake.
UPDATE: This only happens on my computer, so it's not a hardware issue.
UPDATE 2: This is the output of aseqdump -l
me#mycpu:ros$ aseqdump -l
Port Client name Port name
0:0 System Timer
0:1 System Announce
14:0 Midi Through Midi Through Port-0
24:0 BCF2000 BCF2000 MIDI 1
24:1 BCF2000 BCF2000 MIDI 2
I can listen to the input using aseqdump -p 24:0.
Listing the info from all devices using get_device_info gives:
('ALSA', 'Midi Through Port-0', 0, 1, 0)
('ALSA', 'Midi Through Port-0', 1, 0, 0)
('ALSA', 'BCF2000 MIDI 1', 0, 1, 0)
('ALSA', 'BCF2000 MIDI 1', 1, 0, 0)
('ALSA', 'BCF2000 MIDI 2', 0, 1, 0)
('ALSA', 'BCF2000 MIDI 2', 1, 0, 0)
('ALSA', 'BCF2000 MIDI 3', 0, 1, 0)
('ALSA', 'aseqdump', 0, 1, 0)
For devices 2, 4 and 6 I cannot write to the device. I'm trying to write to each output device using:
#!/usr/bin/env python
import pygame
import pygame.midi
import sys
import time
def main():
pygame.midi.init()
devices = pygame.midi.get_count()
if devices < 1:
print "No MIDI devices detected"
exit(-1)
print "Found %d MIDI devices" % devices
print("id -- interface -- name -- input -- ouput -- opened")
for ii in range(devices):
ll = pygame.midi.get_device_info(ii)
bool1 = bool(ll[2])
bool2 = bool(ll[3])
bool3 = bool(ll[4])
print(str(ii) + " -- " + str(ll[0]) + " -- " + str(ll[1]) + " -- " + str(bool1) + " -- " + str(bool2) + " -- " + str(bool3))
if (bool2):
value = 0
if ii%2 == 0:
value = 127
controller = pygame.midi.Output(ii)
controller.write([[[176, 48, 0, 0], value]])
time.sleep(2)
which should print the device info for each device, and if its an output device, it should move the first slider. It doesn't move for any device.
Related
I have a code, which sending a message to usb device. It returns me the correct answer on Windows, but on ubuntu it gives wrong result. Why is that?
import hid
import time
try:
print("Opening the device")
h = hid.device()
h.open(0x0483, 0x5750) # TREZOR VendorID/ProductID
print("Manufacturer: %s" % h.get_manufacturer_string())
print("Product: %s" % h.get_product_string())
print("Serial No: %s" % h.get_serial_number_string())
print("Write the data")
time.sleep(0.05)
h.write(([1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]))
d = h.read(19)
print(d)
except IOError as ex:
print(ex)
print("You probably don't have the hard-coded device.")
print("Update the h.open() line in this script with the one")
print("from the enumeration list output above and try again.")
print("Done")
result on Windows:
Opening the device
Manufacturer: STMicroelectronics
Product: STM32 Custom Human interface
Serial No: 00000000001A
Write the data
[2, 1, 255, 0, 0, 1, 0, 0, 0, 0, 0, 2, 1, 2, 0, 1, 0, 0, 1]
Done
result on Ubuntu:
sudo python3 main.py
Opening the device
Manufacturer: STMicroelectronics
Product: STM32 Custom Human interface
Serial No: 00000000001A
Write the data
Read the data
[2, 1]
Done
everyone. Let me first paste the code.
c.execute("SELECT * FROM c20 WHERE Position = 'chain';")
data1 = c.fetchall()
c.execute("SELECT * FROM c20 WHERE Position = 'center';")
data2 = c.fetchall()
c.execute("SELECT * FROM c20 WHERE Position = 'Total';")
data3 = c.fetchall()
data1 = p_mod.list_multiply(data, copies_data)
data2 = p_mod.list_multiply(data2, copies_data)
data3 = p_mod.list_multiply(data3, copies_data)
meta_data = [data1, data2, data3]
n = 0
while n != 3:
for i in meta_data:
my_tree.insert(parent="", index="end", iid=n, text=f"{n + 1}", values=i)
n += 1
if n == 3:
my_tree.pack(pady=20)
root1.mainloop()
This is the code where I need to fetch queries regarding a requirement and the output required is as follows:
conn = sqlite3.connect("userdata.db")
>>> c = conn.cursor()
>>> c.execute("SELECT * FROM c20 WHERE Position = 'chain';")
<sqlite3.Cursor object at 0x00000221DA432F80>
>>> data1 = c.fetchall()
>>> data1
[('chain', 100, 350, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)]
I have also used a remote function named p_mod.list_multiply().
The function looks like this:
def list_multiply(list_input, number):
new_list = []
list_input = list(list_input)[0]
list_input1 = list_input[1 : -1]
for i in list_input1:
data = int(i) * number
new_list.append(data)
if list_input[0] == 'chain':
new_list.insert(0, 'chain')
elif list_input[0] == 'center':
new_list.insert(0, 'center')
elif list_input[0] == 'Total':
new_list.insert(0, 'Total')
new_list = tuple(new_list)
return new_list
Now the problem arises...
Whenever I try to run the code with same outputs(data1, data2,...) using the function remotely from the main code,
it runs successfully, but whenever I am trying to run the script inside the main program it gives me an error.
Error is as follows:
PS D:\RM INCORPORATION\RM Software DEV Company Pvt\Jewellery App> & C:/Users/ONE/AppData/Local/Programs/Python/Python39/python.exe "d:/RM INCORPORATION/RM Software DEV Company Pvt/Jewellery App/contact.py"
h
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\ONE\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py", line 1884, in __call__
return self.func(*args)
File "d:\RM INCORPORATION\RM Software DEV Company Pvt\Jewellery App\contact.py", line 53, in select
data1 = p_mod.list_multiply(data, copies_data)
File "d:\RM INCORPORATION\RM Software DEV Company Pvt\Jewellery App\p_mod.py", line 15, in list_multiply
data = int(i) * number
ValueError: invalid literal for int() with base 10: 'h'
Let me show you the output used with the function remotely, from the main code...
PS D:\RM INCORPORATION\RM Software DEV Company Pvt\Jewellery App> & C:/Users/ONE/AppData/Local/Programs/Python/Python39/python.exe "d:/RM INCORPORATION/RM Software DEV Company Pvt/Jewellery App/p_mod.py"
('chain', 200, 700, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) ('center', 222, 826, 82, 124, 98, 70, 756, 2, 2, 6, 8, 24, 24, 16, 0, 0) ('Total', 422, 1526, 82, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1878, 70)
Then what is the problem dude?
Eagerly waiting someone's reply
You have overwritten list_input by the following line in list_multiply():
list_input = list(list_input)[0]
Therefore, list_input will be a string after that.
Just remove this line will solve the issue.
Also the following line:
list_input1 = list_input[1 : -1]
will not copy the last item of list_input into list_input1.
It should be
list_input1 = list_input[1:]
list_multiply() can be simplified as below:
def list_multiply(list_input, number):
new_list = tuple(int(x)*number for x in list_input[1:])
return (list_input[0],) + new_list
I am working on setting up a controls dashboard for operators. whenever a heartbeat stops incrementing, after 5 seconds, the LED changes to red. This also enables the acknowledge buttons. When I click them, the LED chages to yellow and I would like to disable the button again. The issue is that it only works for some of the buttons in my code for some reason. any idea why that might be? It only works for the buttons on the left side and not the right side. I am sure that the error is happening at "heartbeats[string][5].setEnabled(False)"
def ack_thread(string):
ack = threading.Thread(target=acknowledge, args=(string,))
ack.start()
def acknowledge(string):
global heartbeats
rowcount = ui.tableWidget.rowCount()
for x in range(0, rowcount, 1):
if ui.tableWidget.item(x,0).text() == string:
print(ui.tableWidget.item(x,0).text())
if ui.tableWidget.item(x,4).text() == 'False':
ui.tableWidget.setItem(x, 4, QtWidgets.QTableWidgetItem("True"))
ui.tableWidget.viewport().update()
heartbeats[string][3].setPixmap(ui.yellowled)
print(heartbeats[string][5])
# heartbeats[string][5].setEnabled(True)
heartbeats[string][5].setEnabled(False)
def gettime():
import datetime
currentDT = datetime.datetime.now()
return currentDT.strftime("%Y-%m-%d %H:%M:%S")
def alarm_handler(source):
rowPosition = ui.tableWidget.rowCount()
ui.tableWidget.insertRow(rowPosition)
ui.tableWidget.setItem(rowPosition, 0, QtWidgets.QTableWidgetItem(source))
ui.tableWidget.setItem(rowPosition, 1, QtWidgets.QTableWidgetItem("text1"))
ui.tableWidget.setItem(rowPosition, 2, QtWidgets.QTableWidgetItem("text2"))
ui.tableWidget.setItem(rowPosition, 3, QtWidgets.QTableWidgetItem(gettime()))
ui.tableWidget.setItem(rowPosition, 4, QtWidgets.QTableWidgetItem("False"))
def heartbeat():
import mhs2
from time import sleep
global heartbeats
mhs2.DB_CONFIG['host'] = '192.168.1.79'
# old value, new value, number of failures, LED object, checkbutton object, Acknowledge object,acknowledged
heartbeats = {
'pd1_hb': [0, 0, 0, ui.label_26, ui.checkBox_7, ui.pushButton_11, True],
'pd9_hb': [0, 0, 0, ui.label_20, ui.checkBox_12, ui.pushButton_13, True],
'pd11_hb': [0, 0, 0, ui.label_21, ui.checkBox_11, ui.pushButton_12, True],
'pd13_hb': [0, 0, 0, ui.label_22, ui.checkBox_13, ui.pushButton_2, True],
'irr1_hb': [0, 0, 0, ui.label_25, ui.checkBox_8, ui.pushButton_5, True],
'irr2_hb': [0, 0, 0, ui.label_24, ui.checkBox_9, ui.pushButton_4, True],
'irr5_hb': [0, 0, 0, ui.label_23, ui.checkBox_10, ui.pushButton_3, True],
'kyledata_hb': [0, 0, 0, ui.label_14, ui.checkBox, ui.pushButton, True],
'standata_hb': [0, 0, 0, ui.label_19, ui.checkBox_3, ui.pushButton_10, True],
'kennydata_hb': [0, 0, 0, ui.label_18, ui.checkBox_4, ui.pushButton_9, True],
'cartmandata_hb': [0, 0, 0, ui.label_17, ui.checkBox_6, ui.pushButton_8, True],
'chefdata_hb': [0, 0, 0, ui.label_16, ui.checkBox_5, ui.pushButton_6, True],
'buttarsdata_hb': [0, 0, 0, ui.label_15, ui.checkBox_2, ui.pushButton_7, True]
}
for item in heartbeats:
heartbeats[item][3].setPixmap(ui.offled)
query = "SELECT * FROM Heartbeat"
enable = mhs2.exec_query(query)
for row in enable:
if row['enable'] == 1:
heartbeats[row['parameter']][4].setChecked(True)
else:
heartbeats[row['parameter']][4].setChecked(False)
while 1:
command = "SELECT * FROM Heartbeat"
hb = mhs2.exec_query(command)
for row in hb:
if heartbeats[row['parameter']][4].isChecked():
heartbeats[row['parameter']][1] = row['value']
if heartbeats[row['parameter']][1] != heartbeats[row['parameter']][0]:
heartbeats[row['parameter']][2] = 0
heartbeats[row['parameter']][3].setPixmap(ui.greenled)
heartbeats[row['parameter']][6] = True
else:
heartbeats[row['parameter']][2] += 1
if heartbeats[row['parameter']][2] > 5 and heartbeats[row['parameter']][6]:
heartbeats[row['parameter']][3].setPixmap(ui.redled)
heartbeats[row['parameter']][5].setEnabled(True)
heartbeats[row['parameter']][6] = False
alarm = threading.Thread(target=alarm_handler,args=(row['parameter'],))
alarm.start()
heartbeats[row['parameter']][0] = heartbeats[row['parameter']][1]
else:
heartbeats[row['parameter']][3].setPixmap(ui.offled)
sleep(1)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
hb = threading.Thread(target=heartbeat)
hb.start()
sys.exit(app.exec_())
I want to draw a Rectangle in pyOpenGL using VBOs with indices. I am using the glDrawRangeElements() function for that but I always get the same mistake in the line glDrawRangeElements:
WindowsError: exception: access violation reading 0x00000000
I tried a lot of things and was looking on the internet for the solution and was studying code examples all day so now I really do not know how to go on. It would be nice if someone here could help me.
This is should be the part of the code in which the error is created:
vertexPositions = [[-0.75, -0.75, 0.0],
[0.75, -0.75, 0.0],
[0.75, 0.75, 0.0],
[-0.75, 0.75, 0.0] ]
vertexIndices = [0, 1, 2,
1, 2, 3]
vertexComponents = 3
positionBufferObject = None
indexBufferObject = None
x = 0
def glGenVertexArray():
vao_id = GL.GLuint(0)
vertex_array_object.glGenVertexArrays(1, vao_id)
return vao_id.value
def initialize_vertex_buffer():
global positionBufferObject, indexBufferObject
indexBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBufferObject)
array_type = (GL.GLushort * len(vertexIndices))
GL.glBufferData(GL.GL_ELEMENT_ARRAY_BUFFER, len(vertexIndices) * 2,
array_type(*vertexIndices), GL.GL_STATIC_DRAW)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, 0)
positionBufferObject = GL.glGenBuffers(1)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, positionBufferObject)
array_type = (GL.GLfloat * len(vertexPositions))
GL.glBufferData(GL.GL_ARRAY_BUFFER,
len(vertexPositions[0])*len(vertexPositions)*sizeOfFloat,
array_type(*vertexPositions), GL.GL_STATIC_DRAW
)
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, 0)
glBindVertexArray( glGenVertexArray() )
def init():
initialize_vertex_buffer()
def display():
global x
GL.glClearColor(0.0, 0.0, 0.0, 0.0)
GL.glClear(GL.GL_COLOR_BUFFER_BIT)
GL.glMatrixMode(GL.GL_MODELVIEW)
GL.glEnableClientState(GL.GL_VERTEX_ARRAY)
GL.glEnableClientState(GL.GL_INDEX_ARRAY)
GL.glLoadIdentity()
GL.glTranslate(0, 0, -5)
GL.glRotate(x, 0, 1, 0)
GL.glBindVertexArray(glGenVertexArray())
GL.glBindBuffer(GL.GL_ARRAY_BUFFER, positionBufferObject)
GL.glBindBuffer(GL.GL_ELEMENT_ARRAY_BUFFER, indexBufferObject)
GL.glEnableVertexAttribArray(0)
GL.glDrawRangeElements(GL.GL_TRIANGLES,0, 4, 6, GL.GL_UNSIGNED_SHORT, c_void_p(0))
#GL.glVertexAttribPointer(0, vertexComponents, GL.GL_FLOAT, False, 0, null)
#GL.glDrawArrays(GL.GL_QUADS, 0, len(vertexPositions) / vertexComponents)
GL.glDisableVertexAttribArray(0)
GL.glDisableClientState(GL.GL_VERTEX_ARRAY)
GL.glDisableClientState(GL.GL_INDEX_ARRAY)
pygame.display.flip()
I have to admit that do not really have a clue of all these things yet, just trying to understand it because I need it for a project, so if there are any additional mistakes I have overlooked so far please tell my ;)
Thanks in advance
Shouldn't your call:
GL.glBindVertexArray (glGenVertexArray())
be
GL.glBindVertexArray (GL.glGenVertexArray())
Also, you probably want to keep track of that vertex array so you can delete it later and free up the resources it uses.
I am using tcdb to hold a large key-value store. The keys are strings representing user IDs, the values are dicts of the form
{'coord':0,'node':0,'way':0,'relation':0}
The store is filled iterating over a data file that has coord, node, way and relation objects, each linked to a specific user. Here's my code for incrementing the fields:
def increment(self,uid,typ):
uid = str(uid)
type = str(typ)
try:
self.cache[uid][typ] += 1
except KeyError:
try:
self.cache[uid][typ] = 1
except KeyError:
try:
print 'creating record for %s' % uid
self.cache[uid] = {'coord':0,'node':0,'way':0,'relation':0}
except KeyError:
print 'something\'s messed up'
This does not work. I end up with a table that has all zero values:
def result(self):
print 'cache is now %i records' % len(self.cache)
for key in self.cache:
print key + ': ' + str(self.cache[key])
yields:
...
4951: {'node': 0, 'coord': 0, 'relation': 0, 'way': 0}
409553: {'node': 0, 'coord': 0, 'relation': 0, 'way': 0}
92274: {'node': 0, 'coord': 0, 'relation': 0, 'way': 0}
259040: {'node': 0, 'coord': 0, 'relation': 0, 'way': 0}
...
Why?
The last exception is never called.
EDIT This code in the first try block:
tempdict = self.cache[uid]
tempdict[typ] = tempdict.get(typ,0) + 1
self.cache[uid] = tempdict
instead of the original
self.cache[uid][typ] += 1
works, but looks really ugly to me.
After this line:
self.cache[uid] = {'coord':0,'node':0,'way':0,'relation':0}
Add this:
self.cache[uid][type] = 1
Also, please don't use type as a variable name as it hides the built-in of the same name.