This commit adds a minimal logging driver for the LP core. The logging
driver provides a printf function which is built on top of the LP UART
driver. The commit also adds an example to demonstrate how to use print
statements in an LP core program.
This commit adds a UART driver for the LP core to interact with the LP
UART. The commit also adds an example to demonstrate the usage of the LP
UART driver.
This commit adds support for the LP I2C peripheral driver to be used by
the LP core. An example is also added to demonstrate the usage of the LP
I2C peripheral from the LP core.