theapi’s gists

theapi / spi.c

Created May 27, 2018 10:07

SPI on the raspberry pi with http://www.airspayce.com/mikem/bcm2835/index.html

	// spi.c
	//
	// Example program for bcm2835 library
	// Shows how to interface with SPI to transfer a byte to and from an SPI device
	//
	// After installing bcm2835, you can build this
	// with something like:
	// gcc -o spi spi.c -l bcm2835
	// sudo ./spi
	//

theapi / boards.txt

Last active August 29, 2015 14:17

ATmega328 on a breadboard (8 MHz internal clock)

	atmega328bb.name=ATmega328 on a breadboard (8 MHz internal clock)

	atmega328bb.upload.protocol=stk500
	atmega328bb.upload.maximum_size=30720
	atmega328bb.upload.speed=57600
	atmega328bb.bootloader.low_fuses=0xE2
	atmega328bb.bootloader.high_fuses=0xDA
	atmega328bb.bootloader.extended_fuses=0x05
	atmega328bb.bootloader.path=arduino:atmega
	atmega328bb.bootloader.file=ATmegaBOOT_168_atmega328_pro_8MHz.hex

theapi / reset.php

Created September 23, 2014 18:13

Reset button for MythTv

	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.or
	g/TR/html4/loose.dtd">
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<title>Reset XBMC</title>
	<link rel="shortcut icon" href="/reset_xbmc.ico">
	<style>
	input#reset{
	width:200px; /same as the height/

theapi / .avrduderc

Created August 4, 2014 22:19

Setting for Arduino IDE to slow down the USBASP programmer for the ATTINY85 at 1mhz

default_bitclock = 10;

theapi / blink_fade.ino

Created June 12, 2014 08:56

Blink Fade without delay



	const byte ledPin = 13; // the number of the LED pin
	const byte fadeLed = 11;

	// Variables will change :
	int ledState = LOW; // ledState used to set the LED

	// Generally, you shuould use "unsigned long" for variables that hold time
	// The value will quickly become too large for an int to store

theapi / avr_timer0.txt

Last active August 29, 2015 13:55

Notes from Bruce Land video - microcontrollers #2

	// see http://people.ece.cornell.edu/land/courses/ece4760/labs/s2012/Sched1GCC644.c
	// see http://people.ece.cornell.edu/land/courses/ece4760/Timers/index.html

	//**********************************************************
	//timer 0 compare ISR
	ISR (TIMER0_COMPA_vect)
	{
	// Called every millis

	// 75 cycles in

theapi / mattrix_alpha.ino

Created February 2, 2014 12:00

	/*
	Shift Register Example
	for 74HC595 shift register
	*/

	//Pin connected to latch pin (ST_CP) of 74HC595
	const int latchPin = 13;
	//Pin connected to clock pin (SH_CP) of 74HC595
	const int clockPin = 12;
	////Pin connected to Data in (DS) of 74HC595

theapi / shift_register.c

Created January 27, 2014 19:30

Attiny85 avr-c shift register 74HC595

theapi / blinkc_nodelay.c

Last active January 3, 2016 22:49

Port manipulation using a timer interrupt instead of delay

theapi / blinkc.c

Created January 20, 2014 13:20

Port manipulation in avr-c

Peter Clarke theapi