FPIOA (现场可编程 IO 阵列， Field Programmable Input and Output Array)
K210 支持每个外设随意映射到任意引脚， 使用 FPIOA 功能来实现。
注意:
以下 GPIOHS 默认已经被使用， 程序中如非必要尽量不要使用：
| GPIOHS | 功能 |
|---|---|
| GPIOHS31 | LCD_DC |
| GPIOHS30 | LCD_RST |
| GPIOHS29 | SD_CS |
| GPIOHS28 | MIC_LED_CLK |
| GPIOHS27 | MIC_LED_DATA |
1. 类 FPIOA
1.1. 方法
help(func)
显示外设及其简要描述
参数
func： 外设名（功能/编号），可以不传参， 则以表格的形式显示所有外设名即简要描述，这个表格也可以在本页的末尾找到（附录：外设表）；</br> 如果传参，则传一个整型值， 找到该编号对应的外设后会打印外设名和描述，</br> 比如FPIOA.JTAG_TCLK或者fm.fpioa.JTAG_TCLK（fm在本页后面介绍） 或者0
比如：
from Maix import FPIOA
fpioa = FPIOA()
fpioa.help()
fpioa.help(0)
fpioa.help(fpioa.JTAG_TCLK)
fm.fpioa.help()
fm.fpioa.help(fm.fpioa.JTAG_TCLK)
返回
外设名及其简要描述
set_function(pin, func)
设置引脚对应的外设功能， 即引脚映射
参数
pin： 引脚编号，取值 [0, 47]， 具体的引脚连接请看电路图， 也可以使用board_info.然后按TAB按键补全来获得板子的常用引脚，比如board_info.LED_Gfunc： 外设功能，传一个整型值，可以通过fm.fpioa.help()或者查本页末尾的 附录： 外设表 表得到
比如 需要将连接 绿色 LED 的引脚映射到 高速 GPIO0 上：
fpioa = FPIOA()
fpioa.set_function(board_info.LED_G, fm.fpioa.GPIOHS0)
get_Pin_num(func)
获取外设映射到哪个引脚上了
参数
func： 外设功能，传一个整型值，可以通过fm.fpioa.help()或者查本页末尾的 附录： 外设表 表得到
比如：
fpioa = FPIOA()
fpioa.set_function(board_info.LED_G, fm.fpioa.GPIOHS0)
pin = fpioa.get_Pin_num(fm.fpioa.GPIOHS0)
if pin == board_info.LED_G:
print("set function ok")
2. 附录： 外设表
| 外设功能（func） | 简要描述 |
|---|---|
| JTAG_TCLK | JTAG Test Clock |
| JTAG_TDI | JTAG Test Data In |
| JTAG_TMS | JTAG Test Mode Select |
| JTAG_TDO | JTAG Test Data Out |
| SPI0_D0 | SPI0 Data 0 |
| SPI0_D1 | SPI0 Data 1 |
| SPI0_D2 | SPI0 Data 2 |
| SPI0_D3 | SPI0 Data 3 |
| SPI0_D4 | SPI0 Data 4 |
| SPI0_D5 | SPI0 Data 5 |
| SPI0_D6 | SPI0 Data 6 |
| SPI0_D7 | SPI0 Data 7 |
| SPI0_SS0 | SPI0 Chip Select 0 |
| SPI0_SS1 | SPI0 Chip Select 1 |
| SPI0_SS2 | SPI0 Chip Select 2 |
| SPI0_SS3 | SPI0 Chip Select 3 |
| SPI0_ARB | SPI0 Arbitration |
| SPI0_SCLK | SPI0 Serial Clock |
| UARTHS_RX | UART High speed Receiver |
| UARTHS_TX | UART High speed Transmitter |
| RESV6 | Reserved function |
| RESV7 | Reserved function |
| CLK_SPI1 | Clock SPI1 |
| CLK_I2C1 | Clock I2C1 |
| GPIOHS0 | GPIO High speed 0 |
| GPIOHS1 | GPIO High speed 1 |
| GPIOHS2 | GPIO High speed 2 |
| GPIOHS3 | GPIO High speed 3 |
| GPIOHS4 | GPIO High speed 4 |
| GPIOHS5 | GPIO High speed 5 |
| GPIOHS6 | GPIO High speed 6 |
| GPIOHS7 | GPIO High speed 7 |
| GPIOHS8 | GPIO High speed 8 |
| GPIOHS9 | GPIO High speed 9 |
| GPIOHS10 | GPIO High speed 10 |
| GPIOHS11 | GPIO High speed 11 |
| GPIOHS12 | GPIO High speed 12 |
| GPIOHS13 | GPIO High speed 13 |
| GPIOHS14 | GPIO High speed 14 |
| GPIOHS15 | GPIO High speed 15 |
| GPIOHS16 | GPIO High speed 16 |
| GPIOHS17 | GPIO High speed 17 |
| GPIOHS18 | GPIO High speed 18 |
| GPIOHS19 | GPIO High speed 19 |
| GPIOHS20 | GPIO High speed 20 |
| GPIOHS21 | GPIO High speed 21 |
| GPIOHS22 | GPIO High speed 22 |
| GPIOHS23 | GPIO High speed 23 |
| GPIOHS24 | GPIO High speed 24 |
| GPIOHS25 | GPIO High speed 25 |
| GPIOHS26 | GPIO High speed 26 |
| GPIOHS27 | GPIO High speed 27 |
| GPIOHS28 | GPIO High speed 28 |
| GPIOHS29 | GPIO High speed 29 |
| GPIOHS30 | GPIO High speed 30 |
| GPIOHS31 | GPIO High speed 31 |
| GPIO0 | GPIO pin 0 |
| GPIO1 | GPIO pin 1 |
| GPIO2 | GPIO pin 2 |
| GPIO3 | GPIO pin 3 |
| GPIO4 | GPIO pin 4 |
| GPIO5 | GPIO pin 5 |
| GPIO6 | GPIO pin 6 |
| GPIO7 | GPIO pin 7 |
| UART1_RX | UART1 Receiver |
| UART1_TX | UART1 Transmitter |
| UART2_RX | UART2 Receiver |
| UART2_TX | UART2 Transmitter |
| UART3_RX | UART3 Receiver |
| UART3_TX | UART3 Transmitter |
| SPI1_D0 | SPI1 Data 0 |
| SPI1_D1 | SPI1 Data 1 |
| SPI1_D2 | SPI1 Data 2 |
| SPI1_D3 | SPI1 Data 3 |
| SPI1_D4 | SPI1 Data 4 |
| SPI1_D5 | SPI1 Data 5 |
| SPI1_D6 | SPI1 Data 6 |
| SPI1_D7 | SPI1 Data 7 |
| SPI1_SS0 | SPI1 Chip Select 0 |
| SPI1_SS1 | SPI1 Chip Select 1 |
| SPI1_SS2 | SPI1 Chip Select 2 |
| SPI1_SS3 | SPI1 Chip Select 3 |
| SPI1_ARB | SPI1 Arbitration |
| SPI1_SCLK | SPI1 Serial Clock |
| SPI_SLAVE_D0 | SPI Slave Data 0 |
| SPI_SLAVE_SS | SPI Slave Select |
| SPI_SLAVE_SCLK | SPI Slave Serial Clock |
| I2S0_MCLK | I2S0 Master Clock |
| I2S0_SCLK | I2S0 Serial Clock(BCLK) |
| I2S0_WS | I2S0 Word Select(LRCLK) |
| I2S0_IN_D0 | I2S0 Serial Data Input 0 |
| I2S0_IN_D1 | I2S0 Serial Data Input 1 |
| I2S0_IN_D2 | I2S0 Serial Data Input 2 |
| I2S0_IN_D3 | I2S0 Serial Data Input 3 |
| I2S0_OUT_D0 | I2S0 Serial Data Output 0 |
| I2S0_OUT_D1 | I2S0 Serial Data Output 1 |
| I2S0_OUT_D2 | I2S0 Serial Data Output 2 |
| I2S0_OUT_D3 | I2S0 Serial Data Output 3 |
| I2S1_MCLK | I2S1 Master Clock |
| I2S1_SCLK | I2S1 Serial Clock(BCLK) |
| I2S1_WS | I2S1 Word Select(LRCLK) |
| I2S1_IN_D0 | I2S1 Serial Data Input 0 |
| I2S1_IN_D1 | I2S1 Serial Data Input 1 |
| I2S1_IN_D2 | I2S1 Serial Data Input 2 |
| I2S1_IN_D3 | I2S1 Serial Data Input 3 |
| I2S1_OUT_D0 | I2S1 Serial Data Output 0 |
| I2S1_OUT_D1 | I2S1 Serial Data Output 1 |
| I2S1_OUT_D2 | I2S1 Serial Data Output 2 |
| I2S1_OUT_D3 | I2S1 Serial Data Output 3 |
| I2S2_MCLK | I2S2 Master Clock |
| I2S2_SCLK | I2S2 Serial Clock(BCLK) |
| I2S2_WS | I2S2 Word Select(LRCLK) |
| I2S2_IN_D0 | I2S2 Serial Data Input 0 |
| I2S2_IN_D1 | I2S2 Serial Data Input 1 |
| I2S2_IN_D2 | I2S2 Serial Data Input 2 |
| I2S2_IN_D3 | I2S2 Serial Data Input 3 |
| I2S2_OUT_D0 | I2S2 Serial Data Output 0 |
| I2S2_OUT_D1 | I2S2 Serial Data Output 1 |
| I2S2_OUT_D2 | I2S2 Serial Data Output 2 |
| I2S2_OUT_D3 | I2S2 Serial Data Output 3 |
| RESV0 | Reserved function |
| RESV1 | Reserved function |
| RESV2 | Reserved function |
| RESV3 | Reserved function |
| RESV4 | Reserved function |
| RESV5 | Reserved function |
| I2C0_SCLK | I2C0 Serial Clock |
| I2C0_SDA | I2C0 Serial Data |
| I2C1_SCLK | I2C1 Serial Clock |
| I2C1_SDA | I2C1 Serial Data |
| I2C2_SCLK | I2C2 Serial Clock |
| I2C2_SDA | I2C2 Serial Data |
| CMOS_XCLK | DVP System Clock |
| CMOS_RST | DVP System Reset |
| CMOS_PWDN | DVP Power Down Mode |
| CMOS_VSYNC | DVP Vertical Sync |
| CMOS_HREF | DVP Horizontal Reference output |
| CMOS_PCLK | Pixel Clock |
| CMOS_D0 | Data Bit 0 |
| CMOS_D1 | Data Bit 1 |
| CMOS_D2 | Data Bit 2 |
| CMOS_D3 | Data Bit 3 |
| CMOS_D4 | Data Bit 4 |
| CMOS_D5 | Data Bit 5 |
| CMOS_D6 | Data Bit 6 |
| CMOS_D7 | Data Bit 7 |
| SCCB_SCLK | SCCB Serial Clock |
| SCCB_SDA | SCCB Serial Data |
| UART1_CTS | UART1 Clear To Send |
| UART1_DSR | UART1 Data Set Ready |
| UART1_DCD | UART1 Data Carrier Detect |
| UART1_RI | UART1 Ring Indicator |
| UART1_SIR_IN | UART1 Serial Infrared Input |
| UART1_DTR | UART1 Data Terminal Ready |
| UART1_RTS | UART1 Request To Send |
| UART1_OUT2 | UART1 User-designated Output 2 |
| UART1_OUT1 | UART1 User-designated Output 1 |
| UART1_SIR_OUT | UART1 Serial Infrared Output |
| UART1_BAUD | UART1 Transmit Clock Output |
| UART1_RE | UART1 Receiver Output Enable |
| UART1_DE | UART1 Driver Output Enable |
| UART1_RS485_EN | UART1 RS485 Enable |
| UART2_CTS | UART2 Clear To Send |
| UART2_DSR | UART2 Data Set Ready |
| UART2_DCD | UART2 Data Carrier Detect |
| UART2_RI | UART2 Ring Indicator |
| UART2_SIR_IN | UART2 Serial Infrared Input |
| UART2_DTR | UART2 Data Terminal Ready |
| UART2_RTS | UART2 Request To Send |
| UART2_OUT2 | UART2 User-designated Output 2 |
| UART2_OUT1 | UART2 User-designated Output 1 |
| UART2_SIR_OUT | UART2 Serial Infrared Output |
| UART2_BAUD | UART2 Transmit Clock Output |
| UART2_RE | UART2 Receiver Output Enable |
| UART2_DE | UART2 Driver Output Enable |
| UART2_RS485_EN | UART2 RS485 Enable |
| UART3_CTS | UART3 Clear To Send |
| UART3_DSR | UART3 Data Set Ready |
| UART3_DCD | UART3 Data Carrier Detect |
| UART3_RI | UART3 Ring Indicator |
| UART3_SIR_IN | UART3 Serial Infrared Input |
| UART3_DTR | UART3 Data Terminal Ready |
| UART3_RTS | UART3 Request To Send |
| UART3_OUT2 | UART3 User-designated Output 2 |
| UART3_OUT1 | UART3 User-designated Output 1 |
| UART3_SIR_OUT | UART3 Serial Infrared Output |
| UART3_BAUD | UART3 Transmit Clock Output |
| UART3_RE | UART3 Receiver Output Enable |
| UART3_DE | UART3 Driver Output Enable |
| UART3_RS485_EN | UART3 RS485 Enable |
| TIMER0_TOGGLE1 | TIMER0 Toggle Output 1 |
| TIMER0_TOGGLE2 | TIMER0 Toggle Output 2 |
| TIMER0_TOGGLE3 | TIMER0 Toggle Output 3 |
| TIMER0_TOGGLE4 | TIMER0 Toggle Output 4 |
| TIMER1_TOGGLE1 | TIMER1 Toggle Output 1 |
| TIMER1_TOGGLE2 | TIMER1 Toggle Output 2 |
| TIMER1_TOGGLE3 | TIMER1 Toggle Output 3 |
| TIMER1_TOGGLE4 | TIMER1 Toggle Output 4 |
| TIMER2_TOGGLE1 | TIMER2 Toggle Output 1 |
| TIMER2_TOGGLE2 | TIMER2 Toggle Output 2 |
| TIMER2_TOGGLE3 | TIMER2 Toggle Output 3 |
| TIMER2_TOGGLE4 | TIMER2 Toggle Output 4 |
| CLK_SPI2 | Clock SPI2 |
| CLK_I2C2 | Clock I2C2 |