From 896be6271b80774b1336f857ff2dd525c404e7bc Mon Sep 17 00:00:00 2001
From: PythonLinks <34622952+PythonLinks@users.noreply.github.com>
Date: Thu, 7 Nov 2024 05:12:09 +0100
Subject: [PATCH 1/2] Added installation instructions to README.md

---
 README.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/README.md b/README.md
index af177cba..f2e7b312 100644
--- a/README.md
+++ b/README.md
@@ -8,3 +8,17 @@
 | [Discord](https://discord.gg/t2CzbAYeD2)
 
 This is the SDK for building custom firmware for the RP2040 on the [pico-ice](https://pico-ice.tinyvision.ai/) board.
+Part of this SDK runs on the RP2040 on the Pico-Ice circuit board, it is used to build the pico-ice firmware. Part runs on your desktop, and communicates with the pico-ice over a USB cable. 
+
+## Installation
+
+First clone this repository. 
+
+`git clone https://github.com/tinyvision-ai-inc/pico-ice-sdk`
+
+Then install the two libraries it requires. 
+
+```
+cd pico-ice-sdk
+git submodule update --init
+```

From f6b917090e46490a005501ffa7b3c1647ffe6c4e Mon Sep 17 00:00:00 2001
From: PythonLinks <34622952+PythonLinks@users.noreply.github.com>
Date: Thu, 7 Nov 2024 05:23:36 +0100
Subject: [PATCH 2/2] Documented cram programming.

---
 examples/pico_cram/README.md | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/examples/pico_cram/README.md b/examples/pico_cram/README.md
index 66e7c4d4..8da2addc 100644
--- a/examples/pico_cram/README.md
+++ b/examples/pico_cram/README.md
@@ -1,3 +1,33 @@
-# pico_cram
+# Pico-Ice Cram Configuration
 
-Program an `rgb_blink.bin` bitstream, prior embedded into a code array (see `rgb_blink.py` and `rgb_blink.h` to the FPGA CRAM.
+There are two ways to program the FPGA. A bitstream can be witten to
+FLASH and loaded by the FPGA when booting, or the bitstream can be
+directly written to the fpga's configuration RAM (cram) by the RP2040 chip.
+This SDK example shows how to directly write the bitstream to the cram.
+
+To build the executable, first follow the installation instructions in the root directory and then type:
+
+
+`cmake .`
+
+This drives a multistage process. In the first stage, a python
+program reads in the bitstream and writes out a .h file with the
+bitstream data embedded in it.
+
+python3 rgb_blink.py > rgb_blink.h
+
+In the second stage, the new .h file is compiled into an executable found at 
+
+`examples/pico_cram/picoasm/picoasm`
+
+This is an RP2040 executable which can be run on the RP2040 and will
+drive the cram initialization process for the FPGA.  Just drag it over to the usb drive, and 
+it will install the bitstream on the FPGA.  You will need to do this everytime that you power on the board. 
+
+If you want to install a different bitstream on the FPGA, just overwrite `rgb_blink.bin` with your bitstream and rerun
+
+`cmake .`
+
+## TODO
+
+Pasa an argument to the cmake file with the name of the bitstream to be used.