I use a Android 8.1 device act as Bluetooth HFP client device. It can accept a call and terminate a call .
But no sound come out from the HFP client device.
state = 3device = 50:04:B8:A0:F3:BC
I HeadsetClientStateMachine: audio event state = AUDIO_STATE_CONNECTED_MSBC
I HeadsetClientStateMachine: audio event state = AUDIO_STATE_CONNECTED
D HeadsetClientStateMachine: AM -> HF 7 15
D HeadsetClientStateMachine: hfp_enable=true mAudioWbs is true
D HeadsetClientStateMachine: Setting sampling rate as 16000
D HeadsetClientStateMachine: hf_volume 15
D HeadsetClientStateMachine: hfp_enable=true
From these log , It seems the audio params already be set to audioManager.What can I do to make it work correctly.
Additionally,from the picture below,the red circle segment code was not excuted ,if this affected the result.
Related
I'm developing an HID Host application to comunicate with a own device and I'm using the NUCLEO-F446ZE board.
At the start I tried to use the HID_Standalone application in the STM32CubeF4 firmware package and then, I tried to develop a new application with STMCube configurator.
In both case I tried to connect (with OTG connector) 3 different type of mouse and 1 keyboard and no all device are able to comunicate with microcontroller:
with Typhoon mouse 40260 the USBH_Process state machine in the usbh_core.c file of the Middlewares, blocks in the HOST_ENUMERATION state (line 462) because the USBH_HandleEnum(phost) function try to get device descriptior (line 646 same file) but the USBH_HandleControl() function read all times USBH_URB_NOTREADY state (line 600 of usbh_ctlreq.c) until HAL_HCD_Disconnect_Callback() called by interrupt.
with Trust mouse 16144 is the same with Typhoon mouse with difference that the HAL_HCD_Disconnect_Callback() isn't called by interrupt.
with Dell Mouse XN966 all work fine and I can see the data.
with asus keyboard G01 KB the USBH_Process state machine in the usbh_core.c come up to HOST_DEV_DISCONNECTED where there is the BgndProcess but I can't receive data because in the HID_Handle the fifo has the tail and head at the same value.
All the previous devices are tested with PC and work fine and the board are powerd with external source.
What can be the problem and how can I fix it?
Thanks in advance
I try to run an example script from dronekit. the code is looks like this :
import gps
import socket
import time
from droneapi.lib import VehicleMode, Location
def followme():
"""
followme - A DroneAPI example
This is a somewhat more 'meaty' example on how to use the DroneAPI. It uses the
python gps package to read positions from the GPS attached to your laptop an
every two seconds it sends a new goto command to the vehicle.
To use this example:
* Run mavproxy.py with the correct options to connect to your vehicle
* module load api
* api start <path-to-follow_me.py>
When you want to stop follow-me, either change vehicle modes from your RC
transmitter or type "api stop".
"""
try:
# First get an instance of the API endpoint (the connect via web case will be similar)
api = local_connect()
# Now get our vehicle (we assume the user is trying to control the first vehicle attached to the GCS)
v = api.get_vehicles()[0]
# Don't let the user try to fly while the board is still booting
if v.mode.name == "INITIALISING":
print "Vehicle still booting, try again later"
return
cmds = v.commands
is_guided = False # Have we sent at least one destination point?
# Use the python gps package to access the laptop GPS
gpsd = gps.gps(mode=gps.WATCH_ENABLE)
while not api.exit:
# This is necessary to read the GPS state from the laptop
gpsd.next()
if is_guided and v.mode.name != "GUIDED":
print "User has changed flight modes - aborting follow-me"
break
# Once we have a valid location (see gpsd documentation) we can start moving our vehicle around
if (gpsd.valid & gps.LATLON_SET) != 0:
altitude = 30 # in meters
dest = Location(gpsd.fix.latitude, gpsd.fix.longitude, altitude, is_relative=True)
print "Going to: %s" % dest
# A better implementation would only send new waypoints if the position had changed significantly
cmds.goto(dest)
is_guided = True
v.flush()
# Send a new target every two seconds
# For a complete implementation of follow me you'd want adjust this delay
time.sleep(2)
except socket.error:
print "Error: gpsd service does not seem to be running, plug in USB GPS or run run-fake-gps.sh"
followme()
I try to run it in my Raspberry with Raspbian OS, but i got an error message like this :
Error : gpsd service does not seem to be running, plug in USB GPS or run run-fake-gps.sh
I get a feeling that my raspberry is needed a gps kind of device to be attached before i can run this script, but i dont really know.
Please kindly tell me whats wrong with it..
the full path of instruction i got from here :
http://python.dronekit.io/1.5.0/examples/follow_me.html
As the example says:
[This example] will use a USB GPS attached to your laptop to have the vehicle follow you as you walk around a field.
Without a GPS device, the code doesn't know where you are so it would not be possible to implement any sort of "following" behavior. Before running the example, you would need to:
Acquire some sort of GPS device (I use one of these, but there are lots of alternatives).
Configure gpsd on your laptop to interface with the GPS device.
As a part of my project I am using XBee. I want sample Python code to make two XBees to communicate with each other in Windows. I have written code, but it has a problem.
What would like to sent a message like "hello" from one XBee, and it should be printed on the other XBee side. How can I do this?
Take a look at the great python-xbee library, and Digi's examples.digi.com as two excellent resources for someone new to the XBee. Between those two sites, you should be able to get your XBee radios joined to each other (using the second link) and then get them working in Python (with the first link).
Before doing anything else you have to configure the devices, use XCTU software:
First device - Coordinator API mode:
- ID 7777(or any random value)
- DL set to FFFF
Second device - Router AT mode:
- ID 7777(has to be the same for every device)
- DL set to 0
Code for coordinator (listen mode):
import serial
import time
from xbee import ZigBee
PORT = "COM1" #change the port if you are not using Windows to whatever port you are using
BAUD_RATE = 9600
ser = serial.Serial(PORT, BAUD_RATE)
# Create API object
xbee = ZigBee(ser)
# Continuously read and print packets
while True:
try:
response = xbee.wait_read_frame()
print("\nPacket received at %s : %s" %(time.time(), response))
except KeyboardInterrupt:
ser.close()
break
Code for the remote device:
import serial
PORT = "COM1" #change the port if you are not using Windows to whatever port you are using
BAUD_RATE = 9600
ser = serial.Serial(PORT, BAUD_RATE)
while True:
try:
data = raw_input("Send:")
ser.write(data) #if you are using python 3 replace data with data.encode()
except KeyboardInterrupt:
ser.close()
break
Run the code and send data from the remote device to the coordinator. You will be able to see the packets printed in the console and in the rx_data field will be the payload.
I hope this is helpful.
I am using the following code to play a recording. In iOS 6 the output is automatically directed to the speaker / headphones. However in iOS 7 the audio is directed to the earpiece. Has AVAudioPlayer behaviour changed in iOS 7?
if (!recorder.recording){
player = [[AVAudioPlayer alloc] initWithContentsOfURL:recorder.url error:nil];
[player setDelegate:(id)self];
[player prepareToPlay];
[player play];
}
iOS 7 just changes defaults and now audio is routed to headphones by default. To change defaults insert this snippet anywhere in your code, doesn't matter before you instantiate AVAudioPlayer or after.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty(kAudioSessionProperty_OverrideAudioRoute, sizeof(audioRouteOverride), &audioRouteOverride);
We hav developed an application for video conference using silverlight.
It works properly for 15 to 19 min then video get stopped and silverlight plugin has crashed.
for video encoding we r using the JPEG encoder and single image from capturesource get encoded and send on each tick of timer..
I also tried to use Silversuite but message popup arrives i.e. Silversuite expire
Is der proper solution for encoding or timer or plug in...
Thanx...
we extend the crashing period from 15 min to 1 to 1 n 1/2 hr ......by flushing the mem stream and decreasing the receiving buffer size .....