WT32-ETH01 spi issue

maxgerhardt · June 3, 2022, 1:22pm

Well looking at

espressif/arduino-esp32/blob/master/variants/wt32-eth01/pins_arduino.h

#ifndef Pins_Arduino_h
#define Pins_Arduino_h

/**
 * Variant: WT32-ETH01
 * Vendor: Wireless-Tag
 * Url: http://www.wireless-tag.com/portfolio/wt32-eth01/
 */

#include <stdint.h>

// interface to Ethernet PHY (LAN8720A)
#define ETH_PHY_ADDR 1
#define ETH_PHY_POWER 16
#define ETH_PHY_MDC 23
#define ETH_PHY_MDIO 18
#define ETH_PHY_TYPE ETH_PHY_LAN8720
#define ETH_CLK_MODE ETH_CLOCK_GPIO0_IN

// general purpose IO pins

This file has been truncated. show original

there is no SCK pin created, unlike other variants like the esp32dev

github.com

espressif/arduino-esp32/blob/master/variants/esp32/pins_arduino.h#L20-L23


      
          static const uint8_t A5 = 33;
          static const uint8_t A6 = 34;
          static const uint8_t A7 = 35;
          static const uint8_t A10 = 4;

So it looks like an Arduino core bug to me.

In any case, to satisfy the compilation, you are not running into that piece of code anyways (arduino-esp32/libraries/SPI/src/SPI.cpp at 33011ede3004276b14a46d4b010658b211540bd1 · espressif/arduino-esp32 · GitHub) so you might as well just add some defaults

build_flags =
   -DSS=5
   -DMOSI=23
   -DMISO=19
   -DSCK=18

to the platformio.ini.