通过软件的方式，控制芯片引脚的高低电平

1. 首先可以进入该芯片或者SOC的后台，既终端界面；
2. 要有芯片或SOC的端口控制表，如：

NO	Name	Description
1	GND1	Ground connections
2	VDD1	Power supply 3.3V is required
3	VDD2	Power supply 3.3V is required
4	UART_TXD0	UART0 TXD, GPIO#12
5	UART_RXD0	UART0 RXD, GPIO#13
6	GND2	Ground connections
7	RXIP0	RXIP0
8	RXIN0	RXIN0
9	TXOP0	TXOP0
10	TXON0	TXON0
11	TXOP1	TXOP1, SPIS_CS, GPIO#14, PWM_CH0
12	TXON1	TXON1, SPIS_CLK, GPIO#15, PWM_CH1
13	RXIP1	RXIP1, SPIS_MISO, GPIO#16, UART_TXD2
14	RXIN1	RXIN1, SPIS_MOSI, GPIO#17, UART_RXD2
15	RXIP2	RXIP2, GPIO#18, PWM_CH0
16	RXIN2	RXIN2, GPIO#19, PWM_CH1
17	TXON2	TXON2, UART_RXD2, GPIO#21, PWM_CH3
18	TXOP2	TXOP2, UART_TXD2, GPIO#20, PWM_CH2
19	TXOP3	TXOP3, SD_WP, GPIO#22
20	TXON3	TXON3, SD_CD, GPIO#23
21	RXIP3	RXIP3, SD_D1, GPIO#24
22	RXIN3	RXIN3, SD_D0, GPIO#25
23	RXIN4	RXIN4, SD_CMD, GPIO#27
24	RXIP4	RXIP4, SD_CLK, GPIO#26
25	TXOP4	TXOP4, SD_D3, GPIO#28
26	TXON4	TXON4, SD_D3, GPIO#29
27	GND3	Ground connections
28	USB_D+	USB positive differential data lines
29	USB_D-	USB negative differential data lines
30	GND4	Ground connections
31	LED4	Port #4 activity LED, GPIO#39
32	LED2	Port #2 activity LED, GPIO#41
33	LED0	Port #0 activity LED, GPIO#43
34	LED1	Port #1 activity LED, GPIO#42
35	LED3	Port #3activity LED, GPIO#40
36	WLED_N	WLAN Activity LED, GPIO#44
37	1.8V_OUT	1.8V_OUT, 10mA
38	GND5	Ground connections
39	CPU_RST_N	Power on reset, low active
40	3.3V_OUT	3.3V_OUT, 100mA
41	PERST_N	PERST_N , GPIO#36
42	REF_CLKO	REF_CLKO, GPIO#37
43	WDT_RST_N	Watchdog reset, GPIO#38
44	I2S_DI	I2S_SDI, I2C_SCLK, GPIO#0, PCMDRX
45	I2S_WS	I2S_WS, I2C_SCLK, GPIO#2, PCMCLK
46	I2S_CLK	I2S_CLK, I2C_SD, GPIO#3, PCMFS
47	I2S_DO	I2S_SDO, I2C_SD, GPIO#1, PCMDTX
48	UART_TXD1	UART1 TXD, GPIO#45
49	UART_RXD1	UART1 RXD, GPIO#46
50	I2C_SD	I2C Data, GPIO#5
51	I2C_SCL	I2C Clock, GPIO#4,
52	SPI_MOSI	SPI_MOSI, GPIO#8
53	SPI_MISO	SPI_MISO, GPIO#9
54	SPI_CLK	SPI_CLK, GPIO#7,
55	SPI_CS1	SPI_CS1, GPIO#6, REF_CLKO
56	GPIO0	GPIO11, REF_CLKO, PERST_N
57	GND6	Ground connections
58	GND7	Ground connections

   3. 通过命令操作后台，来控制引脚电平

 

这里是将56脚的电平，通过软件的方式将它置1；56脚的脚名为GPIO0，它的GPIO口为GPIO11；