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Beckhoff / ADS

Beckhoff protocol to communicate with TwinCAT devices.
MIT License
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ADS-State Notification invalid value #108

Closed mriepl closed 4 years ago

mriepl commented 4 years ago

Hi,

if i add a notification to the ads-state: image i get the notification and an handle (see line 1): image

I also received the initial notification after the add call. In the notification header i received this: image

The given value seems to be wrong. With the TcAdsDll everything work fine.

pbruenn commented 4 years ago

Do you use the TcAdsDll header? It might be related to issue #12 . See my old comment for details. If you want to use the same header, you can try a patch like this: https://github.com/dabrowne/ADS/commit/e181ca260d5cdcdd7afc4bf07c80393f4ce96ddc

mriepl commented 4 years ago

In my wrapper i have added to the struct AdsNotificationHeader the entry "data[ANYSIZE_ARRAY]" like TcAdsDll.

The problem was that the notification datas was copied after the entry "data[ANYSIZE_ARRAY]" because in the marked line you want to jump to the data section of the callback with pointer arithmetic.

image