Core2 with W5500 and ESP-IDF

sheepDog

Hello,
I used a Core2 with W5500, ESP-IDF V4.3.2 and the express example:
../examples/ethernet/basic/main/ethernet_example_main.c

The program started and I got an reset error:

...
I (369) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
E (479) w5500-mac: w5500_reset(228): reset timeout
E (479) w5500-mac: emac_w5500_init(610): reset w5500 failed
I (479) gpio: GPIO[34]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
E (489) esp_eth: esp_eth_driver_install(204): init Mac failed

I used this configuration on menuconfig:

Espressif IoT Development Framework Configuration
Ethernet Type (W5500 Module)  --->
(1) SPI Host Number
(18) SPI SCLK GPIO number
(23) SPI MOSI GPIO number
(19) SPI MISO GPIO number
(26) SPI CS GPIO number
(5) SPI clock speed (MHz)
(34) Interrupt GPIO number
(13) PHY Reset GPIO number
(1) PHY Address

I changed ESP-IDF version, I set Reset GPIO number to -1, I changed SPI clock to 20 Mhz... -> Every time I got the same error.

Do any one have an idea?

Bye,
Uwe

felmue

Hello @sheepDog

try changing MISO from GPIO19 to GPIO38 and PHY Reset from GPIO13 to GPIO19.

M5Core2 uses slightly different GPIOs than M5Stack (Base, Gray, Fire) - see here.

Thanks
Felix

sheepDog

Hello @felmue,

thank you very much.

I changed in the file Kconfig.projbuild the range of parameter EXAMPLE_ETH_SPI_MISO_GPIO to 38 and used your values. It worked fine.

Ethernet Type (W5500 Module)  --->
(1) SPI Host Number
(18) SPI SCLK GPIO number
(23) SPI MOSI GPIO number
(38) SPI MISO GPIO number
(26) SPI CS GPIO number
(5) SPI clock speed (MHz)
(34) Interrupt GPIO number
(19) PHY Reset GPIO number
(1) PHY Address

My challenge was that I hadn't used the Core2-values the last time I made changes. I overlooked this.

Bye,
Uwe