STM32 MCUs Embedded software

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LWIP RX_POOL problem

I am using FreeRTOS and lwIP (callback api) on the STM32F407. I have 1 UDP and 2 TCP ports. After a few hours, the struct pbuf_custom *p = LWIP_MEMPOOL_ALLOC(RX_POOL); operation returns NULL. When I checked the ethernetif.c file, I noticed that the E...

UDP MTU Fragmentation on a STM32

I'm using the LWIP library and STM32F407. I’m trying to send a 1860 bytes  through Ethernet using UDP protocol, exceeding the Ethernet MTU (1500 bytes) so my data is fragmented. I´ve used some programs to test If I could read UDP stream, but nothing ...

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