At command problem

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vishnu046
Posts: 8
Joined: Sat Nov 15, 2014 1:47 pm

At command problem

Postby vishnu046 » Thu May 21, 2015 1:36 pm

hi while checking AT mode in 8266....
in first bootup.....
i entered AT it working good



if once again i removed the power and kept it back then AT command is not working...?
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doughboy
Posts: 63
Joined: Thu Mar 05, 2015 1:54 am

Re: At command problem

Postby doughboy » Thu May 21, 2015 4:32 pm

are you using the latest firmware on a 512kb flash module?
if so, that will happen.
try to upload this firmware
viewtopic.php?f=16&t=400&start=10#p1662
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vishnu046
Posts: 8
Joined: Sat Nov 15, 2014 1:47 pm

Re: At command problem

Postby vishnu046 » Thu May 21, 2015 6:52 pm

Hi its not 512 kB I am using 4Mb flash
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ESP_Faye
Posts: 1646
Joined: Mon Oct 27, 2014 11:08 am

Re: At command problem

Postby ESP_Faye » Tue May 26, 2015 4:08 pm

Hi,

Please try the latest flash download tool_v1.2 http://bbs.espressif.com/viewtopic.php?f=5&t=433

Choose flash size as 1024KB, according to http://bbs.espressif.com/viewtopic.php?f=10&t=305

blank.bin burns into flash 0xFE000

Use the latest boot.bin, such as boot_v1.3+

If your problem is still unsolved, please offer the capture picture of your flash download tool while downloading and the UART output log when running.
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