Hi, after a lot of debugging we’ve discovered what seems to be a bug in Open AT 7.44 (at least for Q26x devices) and possibly some earlier versions. The problem is that the ~CTS pin is set high to late when the UART buffer is about to be overrun. This leads to a loss of data while, for example, sen…

Our local distributor just sent us R7.4a00 and WipSoft5.12 which works as expected but have the same CTS problem as all the newer versions. I guess the bug is older than that. It’s quite odd that no one else here has run in to the same bug.

I’ve run into something like that, but generally ignored, as I don’t need to send such amounts of data, did some test with large data, found I’m losing some of it, but left it like that.

We’ve done some further testing and have found the bug as early as Open AT 7.4a, that is, all versions that are compatible with the Q26 Extreme. Is someone from Sierra reading this? Either there’s a major bug in your software or the documentation left something important out. We’re calling our loca…

I’ve been informed by our local distributer that this thread has been sent to the development team, so hopefully, we will have some answers here soon.

It’s a real shame that SiWi don’t see fit to actually engage on their own forum. :frowning: They could certainly learn a lot from the way that TI engage on their forums…

awneil: I agree. We still haven’t heard anything from Sierra about this issue despite several e-mails to our local distributer. Not even an email saying they are looking at it. Is anyone associated with Sierra reading this thread? We’ve been waiting for a about 3 weeks for an answer now. Either the…

We’ve had representatives from our local distributer here who have verified the bug with their own equipment and sent traces to Sierra. Unfortunately no response at all from Sierra yet.

Just like to add my 2 cents. We are also experiencing this same issue and have gotten no response from our problem reports. I have to agree with awneil, the level of support from TI puts these guys to shame.

UART bug in OpenAT 7.x

Legacy Open AT

victorjd December 21, 2010, 2:58pm 14

What is TI, Texas Instruments? 8)

"forum pretty useless when no-one from Sierra Wireless..."

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UART bug in OpenAT 7.x

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