RPI 1 B+ FT232 disconnecting

[andreisocol]

Hello,

Using minicom (sudo minicom -b 19200 -o -D /dev/ttyUSB0) to read values transmitted through USB by an Arduino connected to a FTDI 232 stops at random intervals.
Tried multiple FT232 devices, all having same behavior.
Also tried short USB cables. Same behaviour.

uname -a
Linux raspberrypi 4.1.12+ #824 PREEMPT Wed Oct 28 16:39:49 GMT 2015 armv6l GNU/Linux

lsusb
Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC

cat /var/log/kern.log
......
Nov 4 11:07:24 localhost kernel: [ 7.061210] usbcore: registered new interface driver ftdi_sio
Nov 4 11:07:24 localhost kernel: [ 7.169491] usbserial: USB Serial support registered for FTDI USB Serial Device
Nov 4 11:07:24 localhost kernel: [ 7.244932] ftdi_sio 1-1.4:1.0: FTDI USB Serial Device converter detected
Nov 4 11:07:24 localhost kernel: [ 7.321776] usb 1-1.4: Detected FT232RL
Nov 4 11:07:24 localhost kernel: [ 7.387123] usb 1-1.4: FTDI USB Serial Device converter now attached to ttyUSB0
.......
Nov 4 14:22:49 localhost kernel: [11736.542211] ftdi_sio ttyUSB0: usb_serial_generic_read_bulk_callback - urb stopped: -32
Nov 4 14:23:13 localhost kernel: [11761.350820] ftdi_sio ttyUSB0: usb_serial_generic_read_bulk_callback - urb stopped: -32

[popcornmix]

@P33M any suggestions?

[andreisocol]

PS : I have always connected the FTDI directly to the RPI's USB ports.
Here is the full output of lsusb and lsusb -v.

Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Bus 001 Device 005: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]

Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0403 Future Technology Devices International, Ltd
idProduct 0x6001 FT232 USB-Serial (UART) IC
bcdDevice 6.00
iManufacturer 1 FTDI
iProduct 2 FT232R USB UART
iSerial 3 A50285BI
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 90mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 2 FT232R USB UART
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)

[andreisocol]

I have closed this by mistake, reopening.

[P33M]

Are you running with max_usb_current=1 in config.txt?

[andreisocol]

/boot $ cat config.txt | grep -i usb - returns nothing.

Also, only uncommented line in /boot/config.txt is :
gpu_mem=128

[P33M]

I'd try with the max current setting enabled. Spurious disconnects could be a symptom of bumping up against the current limit.

[andreisocol]

The Arduino with attached sensors consumes only 27mA + the FT232 which I see it can consume max 90mA. Besides the Arduino + FT232, only an Edimax wifi was connected.
No external USB HUB, no keyboard, no mouse. So consumtion was minimum.
But I could try the max current setting.
Please tell me the value I have to set for the variable "max_usb_current" from /boot/config.txt
Thank you,

[P33M]

max_usb_current=1 enables the higher limit (1.2A).

[andreisocol]

After modifying and rebooting, I have tested and after 3 minutes of data transfer, it disconnected again.

Nov 5 13:16:58 localhost kernel: [ 315.181705] ftdi_sio ttyUSB0: usb_serial_generic_read_bulk_callback - urb stopped: -32
Nov 5 13:17:16 localhost kernel: [ 333.071267] ftdi_sio ttyUSB0: usb_serial_generic_read_bulk_callback - urb stopped: -32

[P33M]

Can you try instead with dwc_otg.fiq_fsm_mask=0x0 set in /boot/cmdline.txt?

[andreisocol]

@P33M
This is the line I got right now :

dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait

Where should I add dwc_otg.fiq_fsm_mask=0x0 ? Does it matter ? Or do I just have to add at the end of the current line ?

[P33M]

Add the parameter anywhere in the line, with a space before and after.

[andreisocol]

Added the configuration, rebooted but minicom it is still disconnecting at random intervals (not bigger then 5 minutes).
@P33M Any other suggestions ?