Umm, isn't it possible to use GPIO17 as RMII clock input? I was going to test the existing hardware with an external clock oscillator to see if Ethernet would work reliably, but I can't configure the GPIO17 pin as clock input. :-( EDIT: I couldn't find any information about this in Tech Ref Manual (...

Shouldn't there be a warning in the ESP32 documentation about this? "If you plan on using WIFI and Ethernet, you CAN NOT use the ESP32 as the PHY master clock source." or something..

Thanks for the reply! The PCB is a 6-layer one and the Ethernet signals are routed in the inner layers. I'm using an external antenna with ESP32, so (most of) the RF radiation is outside the board. Power supply has a 2 A regulator and all the chips and ESP32 have multiple bypass capacitors next to t...

I'm afraid I have run into this same problem, see https://www.esp32.com/viewtopic.php?f=13&t=37757 I'm using a LAN8710A PHY and get the PHY clock from GPIO17. Has anyone found a solution to this problem? I have several hundred boards out there - didn't notice the problem before because we were using...

I have been monitoring DMAMISSEDFR_REG, but no lost frames are reported (as far as I can tell, the driver doesn't access this register - if it does, it clears the register by reading it). One strange thing: When I keep calling esp_now_send(), the Ethernet LED blinks, although the software is not tra...

Some additional information: ESP-NOW reception is not a problem. If one ESP32 is only receiving packets over ESP-NOW, no ICMP packets are lost on Ethernet. But if I use a simple software to transmit ESP-NOW packets at 100 ms or 50 ms intervals, some ICMP packets are lost almost every second. I can s...

So far, I have tried: - forcing lwip to CPU1, no help - setting mac_config.rx_task_prio = 5, no help - setting lwip task priority to max-1, no help - enabling ETH_CMD_S_FLOW_CTRL, no help - measuring time spent in my ESP-NOW receive callback: max 140 µs in worst case - setting ethernet and lwip buff...

I have been writing a communication system which uses ESP-NOW and the protocol is working quite nicely now. However, on the "router" system which passes messages between ESP-NOW nodes and Ethernet, I see UDP packet loss whenever there are packets flowing over ESP-NOW. Same with ping (ICMP) if ESP-NO...

Here's my i2s init code which works in 4.4.6 (full duplex): i2s_config_t i2s_config_0 = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_RX), .sample_rate = I2S_SAMPLE_RATE, .bits_per_sample = I2S_BITS_PER_SAMPLE_32BIT, .channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, // .communication_f...

I'm also interested in using the same MAC for all nodes, but is it possible to use encryption with this system? Does the encryption system have some kind of a separate counter or state machine for each node, so it would break if there were multiple nodes with the same MAC address? Besides, I haven't...