sudo nano /etc/modprobe.d/raspi-blacklist.confYou will then see
sudo reboot
git clone https://github.com/doceme/py-spidev
cd py-spidev
sudo python setup.py install
import spidev/* Happy Birthday Melody with flickering Candle
* By Chris Hawkins
* with modified code from the Melody example
* (cleft) 2005 D. Cuartielles for K3
*
*
* Taken from (cleft) 2005 D. Cuartielles for K3
*
* The calculation of the tones is made following the mathematical
* operation:
*
* timeHigh = period / 2 = 1 / (2 * toneFrequency)
*
* where the different tones are described as in the table:
*
* note frequency period timeHigh
* c 1 261 Hz 3830 1915
* d 2 294 Hz 3400 1700
* e 3 329 Hz 3038 1519
* f 4 349 Hz 2864 1432
* g 5 392 Hz 2550 1275
* a 6 440 Hz 2272 1136
* b 7 493 Hz 2028 1014
* C 8 523 Hz 1912 956
*
* http://www.arduino.cc/en/Tutorial/Melody
*
*
*/
int speaker = 6;
int led1pin = 9; // RED LED
int led2pin = 10; // Yellow LED
int button =4; // state swicth to play music
int x = 0;
int buttonState = 0;
int length = 28; // the number of notes
char notes[] = "ccdcfe ccdcgf ccCafed bbafgf"; // a space represents a rest
int beats[] = { 1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1, 1,1,1,1,1,1,1,1,1,1,1,1,2};
int tempo = 300;
void playTone(int tone, int duration) {
for (long i = 0; i < duration * 1000L; i += tone * 2) {
digitalWrite(speaker, HIGH);
delayMicroseconds(tone);
digitalWrite(speaker, LOW);
delayMicroseconds(tone);
}
}
void playNote(char note, int duration) {
char names[] = {
'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
int tones[] = {
1915, 1700, 1519, 1432, 1275, 1136, 1014, 956 };
// play the tone corresponding to the note name
for (int i = 0; i < 8; i++) {
if (names[i] == note) {
playTone(tones[i], duration);
}
}
}
void playmusic ()
{
for (int i = 0; i < length; i++) {
if (notes[i] == ' ') {
delay(beats[i] * tempo); // rest
}
else {
if (i % 2 == 0)
{
analogWrite (led1pin,200);
analogWrite (led2pin,100);
}
else {
analogWrite (led1pin,100);
analogWrite (led2pin,200);
}
playNote(notes[i], beats[i] * tempo);
}
// pause between notes
delay(tempo / 2);
}
digitalWrite (led1pin,LOW);
digitalWrite (led2pin,LOW);
}
void setup() {
pinMode(speaker, OUTPUT); /* Speaker to play tune */
pinMode(led1pin, OUTPUT); /* Red led from tri colour LED */
pinMode(led2pin, OUTPUT); /* Yellow led from tri colour LED */
pinMode (button, INPUT); /* Start playing melody button */
}
void loop(){
buttonState = digitalRead (button); /* check if button pressed */
if (buttonState == HIGH){
playmusic();
}
}
/************************************//* SD card temperature Logger *//* Version 1.e *//* Chris Hawkins *//************************************/#include "AF_SDLog.h"#include "util.h"#include <avr/pgmspace.h>AF_SDLog card;File f;#define ledBusyPin 8#define powerPin 9#define temperaturePin 0#define BUFFSIZE 99#define buttonStartStop 7int buttonState = 0; // current state of the buttonint runState = false; // previous state of the buttonfloat lastPressed =0;char buffer[BUFFSIZE];uint8_t bufferidx = 0;uint8_t i;unsigned int logCount;// blink out an error codevoid error(uint8_t errno) {while(1) {for (i=0; i<errno; i++) {digitalWrite(ledBusyPin, HIGH);digitalWrite(powerPin, HIGH);delay(200);digitalWrite(ledBusyPin, LOW);digitalWrite(powerPin, LOW);delay(200);}for (; i<10; i++) {delay(300);}}}void setup(){Serial.begin(9600);putstring_nl("\r\nData logger");// configure PINSpinMode(ledBusyPin, OUTPUT);pinMode(powerPin, OUTPUT);pinMode(buttonStartStop, INPUT);digitalWrite(powerPin, HIGH);// check SD card - FAT 2GBif (!card.init_card()) {putstring_nl("Card init. failed!");error(1);}if (!card.open_partition()) {putstring_nl("No partition!");error(2);}if (!card.open_filesys()) {putstring_nl("Can't open filesys");error(3);}if (!card.open_dir("/")) {putstring_nl("Can't open /");error(4);}// Check for next file in sequence 00 to 99strcpy(buffer, "TMPLOG00.TXT");for (buffer[6] = '0'; buffer[6] <= '9'; buffer[6]++) {for (buffer[7] = '0'; buffer[7] <= '9'; buffer[7]++) {putstring("\ntrying to open ");Serial.println(buffer);f = card.open_file(buffer);if (!f)break;card.close_file(f);}if (!f)break;}if(!card.create_file(buffer)) {putstring("couldnt create ");Serial.println(buffer);error(5);}f = card.open_file(buffer);if (!f) {putstring("error opening ");Serial.println(buffer);card.close_file(f);error(6);}putstring("writing to ");Serial.println(buffer);putstring_nl("ready!");delay(250);// clear bufferstrcpy(buffer,"");}void loop(){// get button statebuttonState = digitalRead(buttonStartStop);// if button pressed and 2 seconds passedif (buttonState ==HIGH && (millis() - lastPressed)>2000) {lastPressed = millis();runState = !runState;}// if the state has true then log temperature dataif (runState == true) {// build string to write to cardsprintf(buffer, "%s,%d,%u,%d\n",getDate(),getTime (),logCount++,getTemperature());//log data to SD CardlogData();}}int getTemperature(){//getting the voltage reading from the temperature sensorfloat temperature = getVoltage(temperaturePin);//converting from 10 mv per degree wit 500 mV offsettemperature = (temperature - .5) * 100;return temperature;}unsigned int getTime(){//replace with RTC code once addedreturn (millis() /1000);}char* getDate (){//replace with RTC code once addedreturn "24/04/2010";}float getVoltage(int pin){return (analogRead(pin) * .004882814); //converting from a 0 to 1024 digital range// to 0 to 5 volts (each 1 reading equals ~ 5 millivolts// using TMP36 temperature sensor}void logData( ){digitalWrite(ledBusyPin, HIGH);// LED on for witting to card// get string lengthbufferidx = strlen(buffer);// write data to sd cardif(card.write_file(f, (uint8_t *) buffer, bufferidx) != bufferidx) {putstring_nl("can't write!");error(5);}digitalWrite(ledBusyPin, LOW);// LED off to show finished writting to card}/* End code */
