SiFive HiFive1 Rev B

The HiFive1 Rev B is low-cost, Arduino-compatible development board featuring the Freedom E310 320+ MHz RISC-V chip.

Interfaces

Interface	Hardware Supported	TinyGo Support
GPIO	YES	YES
UART	YES	YES
SPI	YES	YES
I2C	YES	YES
ADC	NO	NO
PWM	YES	Not yet
USBDevice	?	?

Pins

Pin	Hardware pin	Alternative names
`D0`	`P16`	`D7`, `UART_RX_PIN`
`D1`	`P17`	`UART_TX_PIN`
`D2`	`P18`
`D3`	`P19`	`LED2`, `LED_GREEN`
`D4`	`P20`
`D5`	`P21`	`LED3`, `LED_BLUE`
`D6`	`P22`	`LED`, `LED1`, `LED_RED`
`D9`	`P01`
`D10`	`P02`
`D11`	`P03`	`SPI1_SDO_PIN`
`D12`	`P04`	`SPI1_SDI_PIN`
`D13`	`P05`	`SPI1_SCK_PIN`
`D15`	`P09`
`D16`	`P10`
`D17`	`P11`
`D18`	`P12`	`I2C0_SDA_PIN`
`D19`	`P13`	`I2C0_SCL_PIN`

Machine Package Docs

Documentation for the machine package for the SiFive HiFive1b

Flashing

MSD Flashing

The HiFive1 RevB comes with a bootloader that allows Mass Storage Device (MSD) flashing. This means you can just copy the compiled .hex file generated by TinyGo onto it, no additional flashing software is needed.

Plug your HiFive1 RevB into your computer’s USB port.
The HiFive1 RevB board will appear to your computer like a USB drive.
Build and flash your TinyGo program using tinygo flash like this:
```
tinygo flash -target=hifive1b [PATH TO YOUR PROGRAM]
```
The HiFive1 RevB should restart and begin running your program.

Last modified June 28, 2022: microcontrollers: auto-generate a list of available pins (0710c6d)