Serial Port driver registry settings.

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Hi,

I'm using WinCE 5.0 and BSP is ARM.

Serial Driver : COM_MDD2.

We have two COM ports, one for debug (COM2) on target and one for
download and transport (COM1).

We have created two registry for two COM ports i.e.

(Contents of Serial1.reg for COM1)

; COM1 support on cable labeled "COM1"
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial]
"Prefix"="COM" ; Provides the "COM" of
"COM1"
"Dll"="OMAP5910UART.Dll"
"Order"=dword:0
"Index"=dword:1 ; Provides the '1' of "COM1"
"DeviceArrayIndex"=dword:0 ; Device index for
"HWObjects"

(Contents of Serial2.reg for COM2)

; COM1 support on cable labeled "COM2"
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial]
"Prefix"="COM" ; Provides the "COM" of
"COM2"
"Dll"="OMAP5910UART.dll"
"Order"=dword:0
"Index"=dword:2 ; Provides the '2' of "COM2"
"DeviceArrayIndex"=dword:1 ; Device index for
"HWObjects"

these two registry entries are added in (Platform.reg)

#include "$(_TARGETPLATROOT)\src\drivers\SERIAL\driver\Serial1.reg"
#include "$(_TARGETPLATROOT)\src\drivers\SERIAL\driver\Serial2.reg"

and the dll information are added in (Platform.bib)

OMAP5910UART.dll $(_FLATRELEASEDIR)\OMAP5910UART.dll NK SH

when we try to open port COM2, we are able to open the port and
perform read/write operations.

But when we try to open port COM1, we are unable to open the port.

When we say open COM1 through CreateFile( );

it is not reading the registry or reading wrong registry entries...
(COM_INIT or COM_OPEN are not called in COM_MDD2 Library Driver)..

But If I remove serial2.reg entry from platform.reg, then I am able to
open COM1 port and perform
read/write operations (junk charcters getting displayed, I have
checked baud rate its correct but still).

Are the above registry settings correct to share one dll for two COM
ports.


Thanks in Advance..

With regards,

Imtiaz Khan.K.

.

Relevant Pages

  • Re: Do I need to build a new platform (creat new nk.bin)
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    ... but not via the port you're connected to. ... happens" problem is that you've assumed that the port marked COM1 on your CE ... To enable both COM1 and COM2, you need to include the components to support ... Version of the BSP in use ...
    (microsoft.public.windowsce.platbuilder)
  • Re: serial port interfaced EEPROM reader no longer detected after temporary removal
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