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3G modem support in android ICS on AM37x

Rohit Shanbhag
Expert 1075 points

HI TI

 

Am using AM37x and a customised board based on that.

i am trying 3gusb modem on android :

Check list :

1) Kernel Configuration for USB Modem  is done

2) File System Changes  as stated is done

3)When modem plugged i get :

root@androidsys/class/gpio # [ 90.837127] usb 1-1.1: new full-speed USB device number 3 using musb-hdrc
[ 90.973541] usb 1-1.1: New USB device found, idVendor=12d1, idProduct=1436
[ 90.980743] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 90.988372] usb 1-1.1: Product: HUAWEI Mobile
[ 90.993011] usb 1-1.1: Manufacturer: HUAWEI Technology
[ 91.021240] option 1-1.1:1.0: GSM modem (1-port) converter detected
[ 91.028289] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0
[ 91.040740] option 1-1.1:1.1: GSM modem (1-port) converter detected
[ 91.047760] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB1
[ 91.056671] option 1-1.1:1.2: GSM modem (1-port) converter detected
[ 91.063659] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB2



4)But when i run the script :


   /system/bin/pppd /dev/ttyUSB0 115200 persist defaultroute usepeerdns updetach crtscts noauth debug connect "/system/xbin/chat -v -s -f /system/etc/ppp/airtel.chat"

i get :
g connect "/system/xbin/chat -v -s -f /system/etc/ppp/airtel.chat" <
sh: /system/xbin/chat: No such file or directory

but i have chat in /system/xbin/chat 

# ls -ln system/xbin/chat 
-rwxrwxrwx 0 0 91185 2013-02-04 13:14 chat


Kindly help me in this !
Running out of deadline !

Thanks in advance
ROHIT



								


				
				

				
			

		

			
						
									
                			    			                        
						
						
			
			
						
			                        
			
			
				
			  
			

			     
			

		


				    			

						
















	

	

					
    
	
    





		
	
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                          Intellectual
                        580 points
                      
    
                          
                   		
		
    
					
    Hi,
    

    I use conf file - it is a little bit less messy and maybe the content will help.
    

    /system/bin/pppd file /conf_file
    

    ------conf file 
    

    /dev/ttyUSB2
    

    115200
    

    nocrtscts
    

    nocdtrcts
    

    show-password
    

    nodetach
    

    connect '/system/bin/chat -s -v  -f /etc/ppp/chatScripts/gprs-chat-up'
    

    ipcp-accept-local
    

    ipcp-accept-remote
    

    disconnect '/system/bin/chat -v -s -f /etc/ppp/chatScripts/gprs-chat-down'
    

    defaultroute
    

    logfile /system/etc/ppp/ppp.log
    

    debug
    

    maxfail 1
    

    linkname ppp0
    

    usepeerdns
    

    0.0.0.0:0.0.0.0
    

    ------conf end 
    

    other thing: I tried something like this:
    

    /system/etc/ppp # /system/bin/pppd /dev/ttyO2 115200 dump linkname ppp0 defaultr
    oute usepeerdns nomagic nodetach crtscts debug novj maxfail 1 0.0.0.0: connect 
    "/system/bin/ychat -v -s -f /etc/ppp/chatScripts/gprs-chat-up"
    timeout set to 3 seconds
    abort on (\nBUSY\r)
    abort on (\nERROR\r)
    abort on (\nNO ANSWER\r)
    abort on (\nNO CARRIER\r)
    abort on (\nNO DIALTONE\r)
    abort on (\nRINGING\r\n\r\nRINGING\r)
    send (AT^M)
    send (AT^M)
    send (AT^M)
    send (AT^M)
    send (AT^M)
    send (AT^M)
    timeout set to 12 seconds
    send (AT^M)
    send (AT^M)
    send (AT^M)
    expect (OK)

    I named chat "ychat" because of busybox link. 
    

    

    But it is very strange - you should not see such error and your pppd options looks ok.
    

    My pppd is pppd version 2.4.3.  
    

    

    Is your chat ok if you start it from shell (alone) ?
    

    

     
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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                          Prodigy
                        10 points
                      
    
                          
                   		
		
    
					
    Hi Rohit
    

    you again compile your chat binary .
    

    

    Regards,
    

    shakti tiwari 
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    

	            
                	
	
    
				
		                
                
                
                
                
                
                
        		
		
				
    
			
		
    
		
		 
		
		
     
    
	
    

    
			
    
			
    
		
    

		
    
	
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