Hello everyone,
I am working with an STM32H5 series board and have successfully initialized Ethernet using the lwIP stack.
The DHCP process works correctly — I am able to obtain an IP address.
However, I am facing a “Request Timeout” issue when I try to communicate with other devices or servers over the network.
Below is my sys_check_timeouts() function (default lwIP implementation):
void sys_check_timeouts(void) { u32_t now; LWIP_ASSERT_CORE_LOCKED(); now = sys_now(); do { struct sys_timeo *tmptimeout; sys_timeout_handler handler; void *arg; PBUF_CHECK_FREE_OOSEQ(); tmptimeout = next_timeout; if (tmptimeout == NULL) { return; } if (TIME_LESS_THAN(now, tmptimeout->time)) { return; } next_timeout = tmptimeout->next; handler = tmptimeout->h; arg = tmptimeout->arg; current_timeout_due_time = tmptimeout->time; memp_free(MEMP_SYS_TIMEOUT, tmptimeout); if (handler != NULL) { handler(arg); } LWIP_TCPIP_THREAD_ALIVE(); } while (1); }
My setup:
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Controller: STM32H5 series
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Ethernet initialized via CubeMX
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lwIP stack enabled (DHCP client working fine)
Issue:
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DHCP successfully assigns an IP address
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But when I send data or ping a remote server, I get a Request Timeout
Question:
Any suggestions or guidance would be appreciated!
Thank you.
