Smart Home Automation Forum

IIC SDA:GPIO12
IIC SCL:GPIO11

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Ethernet (W5500) I/O define:

clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41

interrupt_pin: GPIO2
reset_pin: GPIO1
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RS485:
RXD:GPIO18
TXD:GPIO8
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4G SIM7600:
RXD:GPIO10
TXD:GPIO9
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1-wire (pull-up resistance on PCB):
1-wire1:GPIO15
1-wire2:GPIO16
1-wire3:GPIO17
1-wire4:GPIO40

1-wire (without resistance on PCB):
1-wire1:GPIO13
1-wire2:GPIO14
1-wire2:GPIO21

free GPIOs(without ESD diode on PCB):
GPIO4
GPIO5
GPIO6
GPIO7

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24C02 EPROM i2c address: 0x50
SSD1306 display: i2c address:0x3c

Please explain the 3 Antenna connectors SMA 1,2,3
Wich one is for GSM and wich for wifi?