# I2C

* <https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/>
  includes GPIO, SPI, UART, JTAG, I2C, PinCtrl, UART and PWM.  Also included
  is a Watchdog Timer and others.
* <http://opencores.org/project,i2c_master_slave>