[arm-allstar] minicom and Rpi2

[David McGough]

BTW, To test your USB serial device, you can temporarily short together
pins 2 and 3 on the DB-9 (or DB-25). Once shorted, any characters you type
on the keyboard in the minicom session should be echoed back to the
screen....This is a simple "loopback" test.




On Thu, 18 Feb 2016, David McGough wrote:

> 
> Hi Don,
> 
> The last line shows a Prolific PL2303 USB serial device on /dev/ttyUSB0 
> ...So, that is the serial device you want, I think.
> 
> As I recall the default RLC4 serial data rate is 9600bps, with no hardware
> flow control. I -think- a standard straight-thru 9 pin cable is all you 
> need (anybody recall for sure???). Please consult the RLC4 manual!
> 
> So, try these commands on the RPi2 to build a config file for minicom:
> 
> echo "pu port             /dev/ttyUSB0" > /root/.minirc.rlc4
> echo "pu baudrate         9600" >> /root/.minirc.rlc4
> echo "pu bits             8" >> /root/.minirc.rlc4
> echo "pu parity           N" >> /root/.minirc.rlc4
> echo "pu stopbits         1" >> /root/.minirc.rlc4
> echo "pu minit" >> /root/.minirc.rlc4
> echo "pu mreset" >> /root/.minirc.rlc4
> echo "pu mhangup" >> /root/.minirc.rlc4
> echo "pu rtscts           No" >> /root/.minirc.rlc4
> echo "pu xonxoff          No" >> /root/.minirc.rlc4
> 
> 
> ...Now that there is a config file, run minicom using this new config:
> 
> 
> minicom rlc4
> 
> 
> 
> (And again keep you fingers crossed!)
> 
> If this doesn't work, there are many good video showing minicom usage 
> over on youtube, which might help with a more in-depth understanding 
> of that software. The good thing is that I think you're ready to go, 
> software wise; now just to make the RPi2 talk to the RLC4!
> 
> 
> Good luck!
> 
> 
> 73, David KB4FXC
> 
> 
> 
> 
> On Thu, 18 Feb 2016, ku6v wrote:
> 
> > Hi David
> > 
> > This is what I see when I check for tty devices.
> > 
> >  
> > 
> > [root at ku6v ~]# dmesg | grep tty
> > 
> > [    0.000000] Kernel command line: dma.dmachans=0x7f35
> > bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2709.boardrev=0xa01041
> > bcm2709.serial=0xe715c5b smsc95xx.macaddr=B8:27:EB:71:5C:5B
> > bcm2708_fb.fbswap=1 bcm2709.disk_led_gpio=47 bcm2709.disk_led_active_low=0
> > sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x3dc00000
> > vc_mem.mem_size=0x3f000000  root=/dev/mmcblk0p2    rw rootwait
> > console=ttyAMA0,115200 console=tty1 selinux=0 plymouth.enable=0
> > smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0 kgdboc=ttyAMA0,115200
> > elevator=noop
> > 
> > [    0.001140] console [tty1] enabled
> > 
> > [    1.045218] dev:f1: ttyAMA0 at MMIO 0x3f201000 (irq = 83, base_baud = 0)
> > is a PL011 rev3
> > 
> > [    1.593125] console [ttyAMA0] enabled
> > 
> > [    5.931747] systemd[1]: Expecting device dev-ttyAMA0.device...
> > 
> > [    6.204517] systemd[1]: Starting system-serial\x2dgetty.slice.
> > 
> > [    6.213723] systemd[1]: Created slice system-serial\x2dgetty.slice.
> > 
> > [    6.362936] systemd[1]: Starting system-getty.slice.
> > 
> > [    6.371923] systemd[1]: Created slice system-getty.slice.
> > 
> > [    7.683107] usb 1-1.5: pl2303 converter now attached to ttyUSB0
> > 
> >  
> > 
> > I set up minicom to connect to my rlc4 device and that is what it's looking
> > for now. It shows the opening minicom screen and shows as "offline" at the
> > bottom of the screen. It may be the modem parameters I have to change. To
> > what I am not sure yet or of that's it.
> > 
> >  
> > 
> > 73
> > 
> > Don
> > 
> > KU6V
> > 
> >  
> > 
> > 
> 
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