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Networking-for-Arduino / EthernetENC

Ethernet library for ENC28J60. This is a modern version of the UIPEthernet library. EthernetENC library is compatible with all Arduino architectures with Arduino SPI library with transactions support. Only include EthernetENC.h instead of Ethernet.h
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ENC28J60 and SD card module on ESP32 #21

Closed Ganesh-Shanbhag-face closed 2 years ago

Ganesh-Shanbhag-face commented 2 years ago

Hi, I am using ENC28J60 Ethernet module (SPI) and SD Card module (SPI) with ESP32 as I need wired networking on ESP32. Ethernet Module and SD Card module are using different CS pin. Ethernet Module when connected to ESP32 without connecting the SD Card module will get the IP from DHCP. But when connected with SD Card module won't work but the SD Card module works alone. What may be the problem?

And when used Ethernet Module alone although it gets IP from DHCP is not connecting to MQTT (Hive MQ Public Client). What may be the problem?

JAndrassy commented 2 years ago

I don't recommend to use this library with the esp32. esp32 has much better options for Ethernet.

The problem could be SPI speed. Try to set lower speed than the 20MHz here https://github.com/jandrassy/EthernetENC/blob/c735fd4cf6821a166ef6b36dd56bd861ba61c400/src/utility/Enc28J60Network.cpp#L39

Ganesh-Shanbhag-face commented 2 years ago

@jandrassy I tried with that but it did not work. Can you suggest any module which works with this library on ESP32?

JAndrassy commented 2 years ago

do you use a 3.3 V powered modules or modules with 5 V powering and SD module with a level shifter chip?

Ganesh-Shanbhag-face commented 2 years ago

Ethernet module is working on 3.3V and SD Card module with 5V with inbuilt 3.3V regulator. So, literally both are working on 3.3V.

JAndrassy commented 2 years ago

but then the SD card module should convert 5 V SPI to 3.3 V SPI and converts 3.3 V SPI to ?.? V SPI

Ganesh-Shanbhag-face commented 2 years ago

No for SD Card module there is inbuilt regulator which will convert it into 3.3V and supplies to the controller/buffer as well as to the SD Card. Since the controller/buffer and SD card are powered by 3.3V there levels are 3.3V compatible.

JAndrassy commented 2 years ago

which side of the 'buffer'?

Ganesh-Shanbhag-face commented 2 years ago

SD Card module is using LVC125A.

JAndrassy commented 2 years ago

LVC125A

then it is OK

simogaspa84 commented 2 years ago

I don't recommend to use this library with the esp32. esp32 as much better options for Ethernet.

The problem could be SPI speed. Try to set lower speed than the 20MHz here

https://github.com/jandrassy/EthernetENC/blob/c735fd4cf6821a166ef6b36dd56bd861ba61c400/src/utility/Enc28J60Network.cpp#L39

Does it work this library with ESP32 ? Thanks a lot

JAndrassy commented 2 years ago

Does it work this library with ESP32 ? Thanks a lot

It does work even it is not a recommended Ethernet solution for esp32

simogaspa84 commented 2 years ago

Thanks a lot for the quick reply... Can I ask you why it is not recommended ? Thanks a lot

JAndrassy commented 2 years ago

Thanks a lot for the quick reply... Can I ask you why it is not recommended ? Thanks a lot

esp32 has LwIP TCP/IP stack which handles WiFi, SoftAP and the esp32 Ethernet peripheral. EthernetENC uses uIP TCP/IP stack and was designed for small MCU with a small RAM.