CODEWITHSUNDEEP
embeddedudpmicrocontrollerlwip
Seiedali Toliat
Seiedali Toliat

Reputation: 1

lwip UDP, CPU time consuming in stm32 boards

I am sending raw data using lwip library, udp protocol,RAW API.my evaluation board is stm32 F429zi. The problem is when i send 48 bytes using udp_send() function, as i measured by oscilloscope, it takes 12 microseconds to return from this function! Which it means the freqeuncy for sending these data cannot be more than 72khz! Is this a regular timing or something went wrong?

I expected to send these 48 bytes in a 8us time window or less.

Upvotes: 0

Views: 34

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