16C554 uart support

QNX Newsgroups (Archives) qnx.rtos
1

Hello,

I have a communication board with 4 asynchronous serial ports based on
16C554 UART called Emerald-MM.

Do you know if this UART is supported by QNX? Is there any Neutrino
driver for this UART?

2

Hello Jorge,
The Diamond EMM-8 uses the standard devc-ser8250 driver BUT there is no
on-board EEPROM and requires setup on each power up.

If your 4 port version does not work first off, it probably needs
initialisation. There was a sample setup shown in the instruction book.
Attached is something I wrote a few years ago. Just include the
binary in your startup script. (NOTE this is an 8 port version so the
program WILL need modifying).

Jorge wrote:

Hello,

I have a communication board with 4 asynchronous serial ports based on
16C554 UART called Emerald-MM.

Do you know if this UART is supported by QNX? Is there any Neutrino
driver for this UART?

3

Emerald-MM (EMM-4M-XT) + Diamonds Prometheus-LC CPU board works OK on my
table
using standard devc-ser8250. Both RS-232 & RS-485 modes.

Jorge <jalonso@ain.es> wrote in message news:e6s2re$cj9$1@inn.qnx.com…

Hello,

I have a communication board with 4 asynchronous serial ports based on
16C554 UART called Emerald-MM.

Do you know if this UART is supported by QNX? Is there any Neutrino
driver for this UART?

4

Hi,

I have used the devc-ser8250 driver but I have not been able to get EMM
board works OK.

I have jumpered and configured EMM board in order not to share addresses
and irq, but when I launch the driver it does not work.

This is the way I have done. First, I have jumpered and configured EMM
serial ports the next way :
Port 1: 0x380, irq 5
Port 2: 0x388, irq 6
Port 3: 0x288, irq 11
Port 4: 0x230, irq 12
Apart from that, I have launched devc-ser8250 driver the next way:
devc-ser8250 -b38400 3f8,4 -b38400 2f8,3 -b38400 3e8,9 -b38400
2e8,15 -b38400 380,5 -b38400 388,6

to Prometheus and EMM serial ports work. Prometheus ports works all
right, but no EMM ports (at the beginning, I only want to use 2 serial
ports):


How do you jumper and configure EMM module? and How do you launch the
driver?

Thanks.

5

Hi!

I’ve used almost default settings and run

devc-ser8250 3f8,4 2f8,3 3e8,4 2e8,15 100,5 108,5 110,5 118,5 &

The jumpers on EMM board are according to the addreses and the IRQ as on p.7
of EMM manual.


There,ve been some troubles with IRQs for the Prometheus LC board so the IRQ
for /dev/ser4 is set to 15.

Alse please note that floppy drive uses irq6.

Maybe you’ll check cables? Best of all use RS485 mode, only 2 wires per port
is required.


Jorge <jalonso@ain.es> wrote in message news:e6tlmm$f5n$1@inn.qnx.com…

Hi,

I have used the devc-ser8250 driver but I have not been able to get EMM
board works OK.

I have jumpered and configured EMM board in order not to share addresses
and irq, but when I launch the driver it does not work.

This is the way I have done. First, I have jumpered and configured EMM
serial ports the next way :
Port 1: 0x380, irq 5
Port 2: 0x388, irq 6
Port 3: 0x288, irq 11
Port 4: 0x230, irq 12
Apart from that, I have launched devc-ser8250 driver the next way:
devc-ser8250 -b38400 3f8,4 -b38400 2f8,3 -b38400 3e8,9 -b38400
2e8,15 -b38400 380,5 -b38400 388,6

to Prometheus and EMM serial ports work. Prometheus ports works all
right, but no EMM ports (at the beginning, I only want to use 2 serial
ports):


How do you jumper and configure EMM module? and How do you launch the
driver?

Thanks.

6

Mention that Prometheus usb uses irq11

Jorge <jalonso@ain.es> wrote in message news:e6tlmm$f5n$1@inn.qnx.com…

Hi,

I have used the devc-ser8250 driver but I have not been able to get EMM
board works OK.

I have jumpered and configured EMM board in order not to share addresses
and irq, but when I launch the driver it does not work.

This is the way I have done. First, I have jumpered and configured EMM
serial ports the next way :
Port 1: 0x380, irq 5
Port 2: 0x388, irq 6
Port 3: 0x288, irq 11
Port 4: 0x230, irq 12
Apart from that, I have launched devc-ser8250 driver the next way:
devc-ser8250 -b38400 3f8,4 -b38400 2f8,3 -b38400 3e8,9 -b38400
2e8,15 -b38400 380,5 -b38400 388,6

to Prometheus and EMM serial ports work. Prometheus ports works all
right, but no EMM ports (at the beginning, I only want to use 2 serial
ports):


How do you jumper and configure EMM module? and How do you launch the
driver?

Thanks.

7

and A/D of PR-Z32-EA may use irq5.
see p.18 of the Prometheus manual

Jorge <jalonso@ain.es> wrote in message news:e6tlmm$f5n$1@inn.qnx.com…

Hi,

I have used the devc-ser8250 driver but I have not been able to get EMM
board works OK.

I have jumpered and configured EMM board in order not to share addresses
and irq, but when I launch the driver it does not work.

This is the way I have done. First, I have jumpered and configured EMM
serial ports the next way :
Port 1: 0x380, irq 5
Port 2: 0x388, irq 6
Port 3: 0x288, irq 11
Port 4: 0x230, irq 12
Apart from that, I have launched devc-ser8250 driver the next way:
devc-ser8250 -b38400 3f8,4 -b38400 2f8,3 -b38400 3e8,9 -b38400
2e8,15 -b38400 380,5 -b38400 388,6

to Prometheus and EMM serial ports work. Prometheus ports works all
right, but no EMM ports (at the beginning, I only want to use 2 serial
ports):


How do you jumper and configure EMM module? and How do you launch the
driver?

Thanks.

8

I have already used EMM serial ports. Finally, I use irq 5, because the
rest of irqs don´t work properly.

But I can not use two or more ports at the same time. Why? I am going to
test some different configuration to solve it.