Re: PPC 2003 PDA COM PORT open failed
- From: r_z_aret@xxxxxxxxxxxx
- Date: Sat, 13 Jan 2007 09:25:37 -0500
Questions about programming are far more likely to get useful answers
if asked in a newsgroup for programmers. In this case, you should
specifically look for a newsgroup for folks who write drivers. This
newsgroup is primarily for users.
I just used google (http://groups.google.com/advanced_group_search) to
look up
com port driver pocket pc 2003
and got 1060 hits. I didn't look at the contents of any, but sure saw
several likely newsgroups.
On 12 Jan 2007 18:59:25 -0800, "Ramesh.R" <ramesh.kvp@xxxxxxxxx>
wrote:
Hi all
Greetings,
We are involved in developing a driver for Pocket PC 2003 PDAs,
Here the problem is COM PORT open failed for Toshiba e800.
work environment :
for Driver : WinCE 4.20 platform Builder.
SDIO based GPS driver.
But this driver is work well for Windows mobile 2003 SE edition to this
same PDA and all other higher versions.
1. Toshiba PPC2003 is not worked for our SDIO-UART based GPS driver.
Failed to open the COM_PORT. We use the SD-COMBO card( SD I/O +
SD-Memory )
Its details are Toshiba E800 -- Pocket PC 2003, version 4.20.1081
(Build 13100)
2. But the same driver is worked well for Toshiba E800 PPC2003 SE. Its
version is 4.21.1088(Build 14132).
3. After we Upgrading the mobile OS from PPC2003 to PPC2003SE, it is
worked well..
But, Our customers wants the SDIO-UART driver only for the Pocket PC
2003. They have no interest to upgrade their Mobile-OS..
Is there any way to fix this issue, with out upgrading the OS.. i.e
by means of any registry-setting changes, coding changes, IRQs or any
other ways.
Our development environment is WinCE 4.20
If you need, I will list the codings....
From the test_log file, Read & Write registers are get failed after
initialization.
So immediately De-initialization are also done. These read & write
registers related to the reading & writing of UART modem registers...
While Seeing the Log files, Read & Write registers get failed is come
to attention.
code for this module is given below
BOOL READ_REGISTER(PSER_INFO pHDevice, DWORD REG_ADDR, UCHAR *Val)
{
SD_API_STATUS status;
status = SDReadWriteRegistersDirect(pHDevice->hDevice,
SD_IO_READ,
pHDevice->Function,
REG_ADDR,
FALSE,
Val,
1);
if (!SD_API_SUCCESS(status))
{
return FALSE;
}
return TRUE;
}
BOOL WRITE_REGISTER(PSER_INFO pHDevice, DWORD REG_ADDR, UCHAR Val)
{
SD_API_STATUS status;
status = SDReadWriteRegistersDirect(pHDevice->hDevice,
SD_IO_WRITE,
pHDevice->Function,
REG_ADDR,
FALSE,
&Val,
1);
if (!SD_API_SUCCESS(status))
{
return FALSE;
}
return TRUE;
}
Regards
Ramesh.R
_______________________________________________________________________________
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Robert E. Zaret, eMVP
PenFact, Inc.
20 Park Plaza, Suite 478
Boston, MA 02116
www.penfact.com
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