0.9.6_b1 - "ready" not found after changing the baud rate

[MicKey]

Hi,
I'm trying new firmware 0.9.6_b1 and after changing the baud rate by "AT+UART=9600,8,1,0,0" and reset, I can not find "ready" at any baud rate.

9600Bd:

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˙<0> ţ0
ř0‚Bî8<0>Ë@<0>ţZHH•…‘ĺ5

and then responds to AT-commands.

115200Bd:

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r$<0>lÜž|<0>Ś#ânŚlě"|Ź‚źě2’sŰ"„c„óoNßloNÜâäbp„Źbl rlpňnŕ‚lcnâ|$ě„c„óoNÎl„Źl`Nn$`n{Ź’›o#l`pňnŕr„ÜśăŕcNâ|䎟ŚŹbŚňNnîl nol`n{Ź’“oƒ2$`pňNŕ{„śÜâŕä"oă|ŹpŚB„űoNÎl`2nod„l`orŽ’›o#l`r›’Nbl rd„„nś„űoNߌžăŚ{Nno„l„b „sl#l<0>ä’„<0>ěd€’śâŚ<0>Ź€l$ls$<0>ě“ll$nśă<0>„l’ll$<0>ě“lŚnŕŹně’ä웄ŽŹboźl$’›ožŚ|›âNlž|c2$`{lŚ<0>ՁMEM CHECK FAIL!!!
d{lŽ<0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0><0>


76800Bd:

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 ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x40100000, len 1320, room 16
tail 8
chksum 0xb8
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0xd9
load 0x3ffe8308, len 412, room 0
tail 12
chksum 0xb9
csum 0xb9

2nd boot version : 1.3(b3)
  SPI Speed      : 40MHz
  SPI Mode       : QIO
  SPI Flash Size : 4Mbit
jump to run user1

R<0>*PUŞPU˘ĄTĄ¨E˘üÚ
€€€<0><0>€<0><0><0>€€€<0>€€<0>€<0><0>€€<0>€€€<0><0>€<0>


Is it bug or my fault?

THX,
Mic

[abc]

Then，

Can it response “OK” after you input “AT” ？

can it still work as usual ？

[MicKey]

Yes, it responds at 9600Bd:

Code: Select all

AT+RST


OK
Z÷úˇ0'ŠĆâcAÁP<0k¤óZHH•…‘ĺ5AT


OK
AT+GMR

AT version:0.22.b1.0
SDK version:0.9.6(b1)

OK


I can wait for "ready" with a timeout and then try to send AT.
But I think it's just a workaround.

THX,
Mic

[Guest]

我也遇到了
但是用模拟的串口却正常读到。。

[jgustavoam]

viewtopic.php?f=65&t=957&p=3267&hilit=baud+rate+reset#p3267

"If it does not work, you need to re-download AT firmware to your module to recover."