tag:blogger.com,1999:blog-6053337542597571017.post1076083154218900030..comments2024-03-28T12:12:05.050+01:00Comments on Hack Correlation: txtr Beagle - card parserLigiushttp://www.blogger.com/profile/04631687424641789584noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6053337542597571017.post-17237133713869219992023-05-18T21:51:46.898+02:002023-05-18T21:51:46.898+02:00Great reading your blog posstGreat reading your blog posstChicken Recipeshttps://www.chickenfoodies.com/chicken/fried_chicken_biryani_with_peppers_and_lemons_5413116845.shtmlnoreply@blogger.comtag:blogger.com,1999:blog-6053337542597571017.post-16174774984570398912013-07-22T20:02:14.269+02:002013-07-22T20:02:14.269+02:00That's strange then, I'm sure my code is d...That's strange then, I'm sure my code is doing something wrong. To be honest, the Android is doing the dithering so that anti-aliasing is built-in by design.<br />However, I'm getting the already rendered data from the card which should not display this aliasing. It looks as if I'm missing some pixel lines causing only incomplete data to be displayed.Ligiushttps://www.blogger.com/profile/04631687424641789584noreply@blogger.comtag:blogger.com,1999:blog-6053337542597571017.post-62989841945379522392013-07-22T02:59:30.973+02:002013-07-22T02:59:30.973+02:00I'm not sure if this was the right way to do i...I'm not sure if this was the right way to do it:<br />I took a screenshot of the standby image displayed in CardParser, converted it to pgm and uploaded it to the Beagle. <br />On the Beagle, it looks as blocky as the bitmap in CardParser, i.e. without anti-aliasing. <br />It might be that the conversion to pgm deteriorates the image quality, too.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6053337542597571017.post-90613501527735249812013-07-22T00:39:08.788+02:002013-07-22T00:39:08.788+02:00I was hoping that the standby screen can be change...I was hoping that the standby screen can be changed. It the first step for a low-power remote display.<br />I'll check the dynamic uC code but I really don't think there will be any. I wish there was a way do download the uC code, I have a lot of tools around but don't know how to use them (scope, logic analyzer, bus pirate, ...) to search for some kind of bootloader or bootstrapper.<br /><br />Worst case for this would be a 555 circuit or small uC to power on the device and keep the power button pressed from time to time. The computer/phone can check for BT availability and upload the file.<br /><br />Would love if someone could test the Java code against a known generated file (see python scripts in the comments from the previous post) and see if the artifacts are also visible on the reader or it's just the computer display.Ligiushttps://www.blogger.com/profile/04631687424641789584noreply@blogger.comtag:blogger.com,1999:blog-6053337542597571017.post-73638820083200582212013-07-22T00:23:37.466+02:002013-07-22T00:23:37.466+02:00Thanks!
One immediate use case for your findings:...Thanks! <br />One immediate use case for your findings: by sending "UTILITYPAGE 6", one can overwrite the standby screen. As long as we cannot disable standby, this is a nice workaround for displaying static content (such as a door plate).<br />I have just tried it out with Florian's code, and it works flawlessly :)<br />Is there any hint of dynamically loaded microcontroller code on the SD card?Anonymousnoreply@blogger.com