Can i transmit serial data only using a data cable via Raspberry pi 0 w's USB port?[]
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Blizzard
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First i am a lost noob
I have been recently trying to find out a way weather i can send serial data (large file like image data) only through the Rpi w 0's micro USB port using ttyGS0.but when i searched online i only found ways of setting up headless through serial and other stuff which was no what i wanted. But i did follow the tutorial half way
I went to '/boot/config.txt' and set 'dtoverlay=dwc2' at the end of
the file after leaving a line
I went to '/boot/cmdline.txt' and did put 'modules-load=dwc2,g_serial' after 'rootwait' leaving a space
Thinking i could just use the /dev/ttyGS0 in my serial program on the Rpi and send the data the data was being sent but on my PC when i tried to access my Rpi which was on comport 12 it said port not found and couldn't open it.But it was showing up in the device manager as 'PI USB to Serial(COM12)'
Then i wondered weather it would be possible at all to access Rpi's comport this way.
If that's the case, i want to know if there is any other way to access the Rpi's USB port only using the USB cable
Note:-
- I don't want to use Rpi's USB as a way of loging ie. 'headless setup'.i just want to receive serial data like an arduino.
- I don't want to use the GPIO pins(i tried) as they can only send limited characters at a time and i want to send an image file. Very quickly.
- I don't have any serial converters at hand so i could route it to the arduino and use /dev/ttyUSB0
then read it on PC. I just only want to use the USB cable.
- In case this info is required:-
- my pc is a probook 6560b running windows 7
things i found while testing and stuff:-
- I did do -lsusb command but i dint find my device on that list
- I tried the 'ls /dev/ttyGS0' and i found '/dev/ttyGS0'
- I checked many forums and some guys were asiking to use this command 'dmesg | grep tty'and show them the code . So i performed it i dont understand what alot in the piece of text means but if it would be helpfull i pasted it here:-
pi@aloypi:~ $ dmesg | grep tty
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=1366 bcm2708_fb.fbheight=768 bcm2708_fb.fbswap=1 smsc95xx.macaddr=B8:27:EB:6D:50:77 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 console=tty1 root=PARTUUID=4ab8bcad-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,g_serial
[ 0.001496] printk: console [tty1] enabled
[ 2.543414] 20201000.serial: ttyAMA0 at MMIO 0x20201000 (irq = 81, base_baud = 0) is a PL011 rev2
[ 2.561791] 20215040.serial: ttyS0 at MMIO 0x20215040 (irq = 53, base_baud = 50000000) is a 16550
[ 6.716694] systemd[1]: Created slice system-getty.slice.
- i also tried this one 'dmesg | grep dwc2' out of curiosity and got this but i cant say anything judging it so ya
pi@aloypi:~ $ dmesg | grep dwc2
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=1366 bcm2708_fb.fbheight=768 bcm2708_fb.fbswap=1 smsc95xx.macaddr=B8:27:EB:6D:50:77 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000 console=tty1 root=PARTUUID=4ab8bcad-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,g_serial
[ 2.379190] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 2.386185] dwc_otg: FIQ enabled
[ 2.386205] dwc_otg: NAK holdoff enabled
[ 2.386219] dwc_otg: FIQ split-transaction FSM enabled
[ 2.386245] Module dwc_common_port init
[ 2.968203] modules-load=dwc2,g_serial
[ 8.344134] dwc2 20980000.usb: supply vusb_d not found, using dummy regulator
[ 8.367130] dwc2 20980000.usb: supply vusb_a not found, using dummy regulator
[ 8.626751] dwc2 20980000.usb: EPs: 8, dedicated fifos, 4080 entries in SPRAM
[ 8.647109] dwc2 20980000.usb: DWC OTG Controller
[ 8.653810] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 8.726672] dwc2 20980000.usb: irq 33, io mem 0x20980000
[ 8.787097] usb usb1: Manufacturer: Linux 5.10.17+ dwc2_hsotg
[ 9.371395] dwc2 20980000.usb: bound driver g_serial
[ 194.158373] dwc2 20980000.usb: new device is high-speed
[ 194.189677] dwc2 20980000.usb: new device is high-speed
[ 194.225164] dwc2 20980000.usb: new address 3
If anyone can help me it would be very greatly appreciated
and your help could help a lot more people starting their journey with the Raspberry as well cause many people seem just about as lost as i am about this topic.
Once again thanks Bros
raspberry-pi serial-port pyserial tty usbserial