WIZ550io and Arduino Pro Micro

Network Module WIZ550io
1

Hi Guys,

I am trying to run WebServer example on Arduino Pro Micro (bit.ly/1iEC9R6).

Unfortunately, there is no SS pin on Pro Micro, so I’ve changed the main Arduino Ethernet library header file (/usr/share/arduino/libraries/Ethernet/utility/w5100.h, line 334) and redefine the SS pin as follows:

 #elif defined(__AVR_ATmega32U4__)
  //inline static void initSS()    { DDRB  |=  _BV(6); };
  //inline static void setSS()     { PORTB &= ~_BV(6); };
  //inline static void resetSS()   { PORTB |=  _BV(6); };

  inline static void initSS()    { pinMode(PRO_MICRO_SS, OUTPUT); \
                                   digitalWrite(PRO_MICRO_SS, HIGH); };
  inline static void setSS()     { digitalWrite(PRO_MICRO_SS, LOW); };
  inline static void resetSS()   { digitalWrite(PRO_MICRO_SS, HIGH); };

and using pin 10 on Pro Micro as Slave Select pin:

#define PRO_MICRO_SS 10

Unfortunately, it is not working.
The printed IP address over serial port is 0.116.116.116

Any idea what is the problem?

P.S:
I’m using two AAA batteries to power up WIZ550io separately. Attached pins are:
Pro Micro → WIZ550io
10 → SS (J1 - pin 6)
16 → MOSI (J1 - pin 3)
14 → MISO (J1 - pin 4)
15 → SCLK (J1 - pin 5)

The RSTn pin (J2- pin 3) is not connected.

2

Hi,

WIZ550io have the default network configuration as 192.168.1.2.
For this, WIZ550io have a tiny mcu confiures the default network into W5500 during 500ms after reset.

You’d better try to access WIZ550io after over 500ms.

Thank you.

3

Thanks for the response.

My home router subnet is 192.168.2.0, so it might be the problem.

Thanks
P