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The 2m licor connected to /dev/ttyS2 was removed today.

The licors at 16 and 43 meters were reconnected to ports
/dev/ttyS11 and /dev/ttyS17, but we're not sure at this point
which was connected to which port. Perhaps we can query the
serial numbers to determine which is where.

Used 

(Coef ?)

command to determine the serial numbers:

port

height

SN

ttyS2

removed

 

ttyS7

7m

1166

ttyS11

either 16 or 43 meters, need to verify

1164

ttyS14

30m

1163

ttyS17

either 16 or 43 meters

1167

Basic 7500 configuration:

(Outputs (RS232 (EOL "0A") (CO2Raw TRUE) (CO2D TRUE) (H2ORaw TRUE) (H2OD TRUE) (Temp  TRUE) (Pres TRUE) (DiagVal TRUE)))

First test: 4 licors running at 10Hz, 19200 baud

(Outputs (BW 10) (RS232 (Freq 10.0)  (Baud 19200)))

This resulted in around 1200 spurious interrupts being reported in /var/log/isfs/kernel

Second test: 4 licors running at 5 Hz, 19200 baud

(Outputs (BW 5) (RS232 (Freq 5.0)  (Baud 19200)))

This resulted in around 300 spurious interrupts/sec being reported in /var/log/isfs/kernel

Third test: 4 licors running at 5 Hz, 9600 baud

(Outputs (BW 5) (RS232 (Freq 5.0)  (Baud 9600)))

This resulted in usually less than 50 spurious interrupts/sec being reported in /var/log/isfs/kernel. The kernel does not report more than 50/s, so there are very few reports of spurious interrupts showing up in /var/log/isfs/kernel.

Left it running at this setting.

Current values from /proc/tty/driver/serial:

2: uart:XScale mmio:0x40700000 irq:13 tx:543 rx:1136277465 fe:1947 RTS|DTR

7: uart:ST16654 port:F1000110 irq:104 tx:1111 rx:1153977325 fe:41917 RTS|DTR

11: uart:ST16654 port:F1000130 irq:104 tx:1585 rx:3762900 fe:21542 RTS|DTR

14: uart:ST16654 port:F1000148 irq:104 tx:1549 rx:575482383 fe:3996 RTS|DTR

17: uart:ST16654 port:F1000160 irq:104 tx:1079 rx:2059346 fe:2312 RTS|DTR

Next morning, tried fourth test:

Fourth test: 4 licors running at 10 Hz, 9600 baud

(Outputs (BW 10) (RS232 (Freq 10.0)  (Baud 9600)))

This resulted in around 400-500 spurious interrupts/sec being reported in /var/log/isfs/kernel. The system is keeping up, top shows an idle value of ~ 70%.
Current values from /proc/tty/driver/serial, so it appears that the framing errors are not being generated at this baud rate.

7: uart:ST16654 port:F1000110 irq:104 tx:1371 rx:1169013368 fe:41917 RTS|DTR

11: uart:ST16654 port:F1000130 irq:104 tx:2133 rx:18900757 fe:21542 RTS|DTR

14: uart:ST16654 port:F1000148 irq:104 tx:1809 rx:590564461 fe:3997 RTS|DTR

17: uart:ST16654 port:F1000160 irq:104 tx:1339 rx:17587617 fe:2321 RTS|DTR
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