natanaeljr

#!/bin/bash
## Setup GTest/GMock

set -Eeuxo pipefail

# Require root
[ "$UID" -eq 0 ] || exec sudo "$0" "$@"

# Check required packages are installed
dpkg -s libgtest-dev

natanaeljr

cmake_minimum_required(VERSION 3.5)
include(ExternalProject)

#########################################################################################
# GLEW
#########################################################################################
set(GLEW_PREFIX ${CMAKE_BINARY_DIR}/glew)
set(GLEW_INCLUDE_DIR ${GLEW_PREFIX}/include CACHE STRING "GLEW Include Directory")
set(GLEW_LIBRARY ${GLEW_PREFIX}/lib64/libGLEW.a CACHE STRING "GLEW Static Library")
set(GLEW_LIB_DEPENDENCIES CACHE STRING "GLEW Library Dependencies"

natanaeljr

cmake_minimum_required(VERSION 3.5)
include(ExternalProject)

#########################################################################################
# GLFW3
#########################################################################################
option(BUILD_GLFW3 "Download and build GLFW3" OFF)

# Use GLFW from system
if(NOT BUILD_GLFW3)

natanaeljr

cmake_minimum_required(VERSION 3.5)
include(ExternalProject)

#########################################################################################
# GLAD
#########################################################################################
option(DOWNLOAD_GLAD "Download and build GLAD" OFF)

# Build settings
set(GLAD_PREFIX ${CMAKE_BINARY_DIR}/GLAD)

natanaeljr

#
# Set FullHD resolution (1920x1080) into a HD monitor of native resolution 1366x768.
#
xrandr --output eDP1 --mode 1366x768 --panning 1920x1080 --scale 1.41

#
# Set a scaled down resolution of 1920x1080 to 21:9 monitor (2560x1080)
$
xrandr --output HDMI1 --mode 1920x1080 --panning 1920x1080

natanaeljr

#include <cstdio>
#include <utility>
#include <GLFW/glfw3.h>
#include <unistd.h>

static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {}
static void error_callback_glfw(int error, const char* description) {}
static void framebuffer_size_callback(GLFWwindow* window, int width, int height) {}

natanaeljr

BEGIN {
  getline < "/tmp/cpu-usage-cache"
  close("/tmp/cpu-usage-cache")
  prev_idle = $1
  prev_total = $2
  getline < "/proc/stat"
  close("/proc/stat")
  idle = $5
  total = 0
  for (i=2; i<=NF; i++)

natanaeljr

#!/bin/sh

# Module showing CPU load as a changing bars.
# Just like in polybar.
# Each bar represents amount of load on one core since
# last run.

# Cache in tmpfs to improve speed and reduce SSD load
cache=/tmp/cpubarscache

natanaeljr

1. Install ArchLinux ARMv7 on the SD card

Follow the guide lines in: https://archlinuxarm.org/platforms/armv8/broadcom/raspberry-pi-3


2. Configure Serial UART0 to the Linux console

Only need to disable the bluetooth on UART0 to free it to operate as linux console:
Add the following to /boot/config.txt to disable the onboard bluetooth on UART0:

natanaeljr

#!/bin/sh

# array of connected monitors
monitors=( $(xrandr | grep ' connected ' | cut -d' ' -f1) )

# for the integrated display, set a higher resolution
if [ ${#monitors[@]} -eq 1 ]; then
    xrandr --output $monitors --mode 1366x768 --panning 1920x1080 --scale 1.41

# for multiple monitors, enable them all