04-20-2025, 06:52 AM
ANALOG_A1(0-5v) GPIO5
ANALOG_A2(0-5v) GPIO7
ANALOG_A3(4-20mA) GPIO6
ANALOG_A4(4-20mA) GPIO4
IIC SDA:GPIO8
IIC SCL:GPIO18
PCF8575:U23 i2c address:0x24
PCF8575->P0 (DI1)
PCF8575->P1 (DI2)
PCF8575->P2 (DI3)
PCF8575->P3 (DI4)
PCF8575->P4 (DI5)
PCF8575->P5 (DI6)
PCF8575->P6 (DI7)
PCF8575->P7 (DI8)
PCF8575->P8 (relay1)
PCF8575->P9 (relay2)
PCF8575->P10 (relay3)
PCF8575->P11 (relay4)
PCF8575->P12 (relay5)
PCF8575->P13 (relay6)
PCF8575->P14 (relay7)
PCF8575->P15 (relay8)
RF433MHz wireless receiver: GPIO40
------------------------
Ethernet (W5500) I/O define:
clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41
interrupt_pin: GPIO2
reset_pin: GPIO1
--------------------
RS485:
RXD:GPIO17
TXD:GPIO16
--------------------
Tuya module:
RXD:GPIO38
TXD:GPIO39
Tuya network button: Tuya module's P28
Tuya network LED: Tuya module's P16
---------------------
1-wire (pull-up resistance on PCB):
1-wire1:GPIO48
1-wire2:GPIO47
1-wire3:GPIO21
1-wire4:GPIO15
1-wire (without resistance on PCB):
1-wire2:GPIO14
------------------------
SD Card:
SPI-MOSI:GPIO10
SPI-SCK:GPIO11
SPI-MISO:GPIO12
SPI-CS:GPIO9
SPI-CD:GPIO13
------------------------
24C02 EPROM i2c address: 0x50
DS3231 RTC i2c address: 0x68
SSD1306 display: i2c address:0x3c
ANALOG_A2(0-5v) GPIO7
ANALOG_A3(4-20mA) GPIO6
ANALOG_A4(4-20mA) GPIO4
IIC SDA:GPIO8
IIC SCL:GPIO18
PCF8575:U23 i2c address:0x24
PCF8575->P0 (DI1)
PCF8575->P1 (DI2)
PCF8575->P2 (DI3)
PCF8575->P3 (DI4)
PCF8575->P4 (DI5)
PCF8575->P5 (DI6)
PCF8575->P6 (DI7)
PCF8575->P7 (DI8)
PCF8575->P8 (relay1)
PCF8575->P9 (relay2)
PCF8575->P10 (relay3)
PCF8575->P11 (relay4)
PCF8575->P12 (relay5)
PCF8575->P13 (relay6)
PCF8575->P14 (relay7)
PCF8575->P15 (relay8)
RF433MHz wireless receiver: GPIO40
------------------------
Ethernet (W5500) I/O define:
clk_pin: GPIO42
mosi_pin: GPIO43
miso_pin: GPIO44
cs_pin: GPIO41
interrupt_pin: GPIO2
reset_pin: GPIO1
--------------------
RS485:
RXD:GPIO17
TXD:GPIO16
--------------------
Tuya module:
RXD:GPIO38
TXD:GPIO39
Tuya network button: Tuya module's P28
Tuya network LED: Tuya module's P16
---------------------
1-wire (pull-up resistance on PCB):
1-wire1:GPIO48
1-wire2:GPIO47
1-wire3:GPIO21
1-wire4:GPIO15
1-wire (without resistance on PCB):
1-wire2:GPIO14
------------------------
SD Card:
SPI-MOSI:GPIO10
SPI-SCK:GPIO11
SPI-MISO:GPIO12
SPI-CS:GPIO9
SPI-CD:GPIO13
------------------------
24C02 EPROM i2c address: 0x50
DS3231 RTC i2c address: 0x68
SSD1306 display: i2c address:0x3c