[arm-allstar] minicom and Rpi2

[David McGough]

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
> 
>  
> 
>