ESP12E/F 参数对比

模式	GPIO0	GPIO2	GPIO15	描述
正常启动	高	高	低	从闪存运行固件
闪光模式	低	高	低	启用固件刷写

Pin	Name	Function
1	RST	Reset (Active Low)
2	ADC (A0)	Analog Input (0–1V)
3	EN (CH_PD)	Chip Enable (Pull High for Normal Operation)
4	GPIO16	Wake from Deep Sleep, General Purpose I/O
5	GPIO14	SPI_CLK, General Purpose I/O
6	GPIO12	SPI_MISO, General Purpose I/O
7	GPIO13	SPI_MOSI, General Purpose I/O
8	VCC	3.3V Power Supply
9	GND	Ground
10	GPIO15	SPI_CS, Boot Mode Selection (Pull Low for Normal Operation)
11	GPIO2	Boot Mode Selection, General Purpose I/O
12	GPIO0	Boot Mode Selection (Pull Low for Flash Mode)
13	GPIO4	I²C SDA, General Purpose I/O
14	GPIO5	I²C SCL, General Purpose I/O
15	RXD (GPIO3)	UART0 RX, General Purpose I/O
16	TXD (GPIO1)	UART0 TX, General Purpose I/O