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Re: [lwip-users] send/receive issue with lwip - FBE - fatal bus error DM
Re: [lwip-users] send/receive issue with lwip - FBE - fatal bus error DMACSR 12 th bit
Thu, 6 Feb 2020 06:46:15 -0800
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Are you aware of (and you have fixed)
all H7 driver bugs listed here?
Are you using LwIP 2.0.0 as distributed
by ST, or the latest 2.1.2?
On 2/6/2020 5:43 AM, anandhram via
STM32 lwip stack issue - frames/not received/processed - FBE error
FBE bit 12 -Fatal bus error.
STM board used : STMh743
is there any timing problem or a configuration problem with the clock, bus
speed or DMA?
Environment : 100Mbit/s full duplex ethernet used.
below are the additional information based on the new tests.
from the ethernet analyzer , its been found the error occurs at the below
1. time interval <40us ,dataframes sent out and received by STM32h7
DMACSR FBE error is set.same issue is reported by switch also as
note: the same issue is observed with evaluation board also.
2. if time interval >40us to miliseconds ,dataframes sent out and
received by STM32h7 board
is received and sent correctly without any errors.
Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html
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