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Aus Hackerspace Ffm
Another requirement was fast responsiveness. The [[SimpleSDAudio]]-library from [[Benutzer:Tut|Tut]] provides just that. [[Benutzer:Tut|Tut]] helped quite a lot with the circuit design in this project.
== Features ==
Choose between 8bit Stereo or 16bit mono Sound.
Board size: 15 x 30mm(0.6 x 1.2 inches) 8 Pins are accessible including i²C PINS == License Connections ==[[Datei:ChimeConnections.png]] == Design Files == [https://github.com/DCEM/HackFFM-Duino-Chime HackFFM-Duino-Chime on GitHub] == Arduino code (for use with SimpleSDAudio library) ==<pre>/* Simple SD Audio bare minimum example, plays file EX1.MIX from root folder of SD card. This example shows how to use the SimpleSDAudio library with Chime http://hackerspace-ffm.de/wiki/index.php?title=HackFFM-Duino_Chime See SimpleSDAudio.h or our website for more information: http://www.hackerspace-ffm.de/wiki/index.php?title=SimpleSDAudio created 27 Sep 2015 by Lutz Lisseck */#include <SimpleSDAudio.h> /* Chime Special function block start */#define CHIME_GAIN_SW 2#define CHIME_GAIN_EN A3#define CHIME_SPK_EN A1#define CHIME_LED 5#define CHIME_SD_DET 8#define CHIME_SD_CS 4/* gain 0 off, 1 quiet, 2 loud */void setupChime(unsigned char gain) { pinMode(CHIME_GAIN_SW, OUTPUT); pinMode(CHIME_GAIN_EN, OUTPUT); pinMode(CHIME_SPK_EN, OUTPUT); pinMode(CHIME_LED, OUTPUT); digitalWrite(CHIME_LED, LOW); pinMode(CHIME_SD_DET, INPUT_PULLUP); switch(gain) { case 0: // off digitalWrite(CHIME_SPK_EN, LOW); digitalWrite(CHIME_GAIN_EN, HIGH); digitalWrite(CHIME_GAIN_SW, LOW); break; case 1: // soft digitalWrite(CHIME_SPK_EN, HIGH); digitalWrite(CHIME_GAIN_EN, HIGH); digitalWrite(CHIME_GAIN_SW, LOW); break; default: // loud digitalWrite(CHIME_SPK_EN, HIGH); digitalWrite(CHIME_GAIN_EN, LOW); digitalWrite(CHIME_GAIN_SW, HIGH); break; } SdPlay.setSDCSPin(CHIME_SD_CS);}/* Chime Special function block end */ void setup(){ // Open serial communications and wait for port to open: Serial.begin(9600); setupChime(2); // Using F("...") to avoid wasting RAM Serial.print(F("\nInitializing SD card...")); if (!SdPlay.init(SSDA_MODE_FULLRATE | SSDA_MODE_STEREO | SSDA_MODE_AUTOWORKER)) { Serial.println(F("initialization failed. Is FAT formated card inserted?")); Serial.print(F("Error code: ")); Serial.println(SdPlay.getLastError()); while(1); } else { Serial.println(F("Wiring is correct and a card is present.")); } Serial.print(F("Looking for EX1.MIX... ")); if(!SdPlay.setFile("EX1.MIX")) { Serial.println(F(" not found on card! Error code: ")); Serial.println(SdPlay.getLastError()); while(1); } else { Serial.println(F("found.")); } Serial.print(F("Playing... ")); SdPlay.play(); while(!SdPlay.isStopped()) { ; // no worker needed anymore :-) delay(500); digitalWrite(CHIME_LED, !digitalRead(CHIME_LED)); } Serial.println(F("done.")); SdPlay.deInit();} void loop(void) { }</pre>
Licensing CC v4.0 Share-Alike (http://creativecommons.org/licenses/by-sa/4.0/)
I started out with the open log design. Although there is not much left of it, it was some help.
I also used libraries from sparkfun and adafruit.
[[Kategorie:Projekte]]
