Programming
The RISC-V architecture has a gcc
compiler.
The best reference for getting the correct cross-compiler version is the PicoRV32 source
in the cliffordwolf/picorv32 repository.
Specifically, see the top-level README.md
file section
Building a pure RV32I Toolchain.
For programming examples specifically for the Caravel chip
(assuming a correct installation of a RISC-V gcc
toolchain as described above),
see efabless/caravel repository.
The directory verilog/dv
contains example source code to program the Ravenna chip
along with the header file defs.h
that defines the memory-mapped locations
as described throughout this text.
The verilog/dv
directory contains a Makefile
that compiles hex
files
and runs simulations of a number of test programs that exercise various features of the chip.
Additional documentation exists on the same site for the provided demonstration circuit board and driver software.