I have been trying to combine an Arduino Ethernet and a Wave Shield by ladyada but without success. Individually both work perfectly, but when EthernetClient client = server.available(); is called I am unable to deactivate the Wiznet chip by calling pin 10 HIGH. The code I am using for testing is a combination of the WebServer example in Arduino 1.0 and the PiSpeakHC example that comes with the WaveHC library. This is the full code:
#include <SPI.h>
#include <Ethernet.h>
#include <TextFinder.h>
#include <FatReader.h>
#include <SdReader.h>
#include <avr/pgmspace.h>
#include "WaveUtil.h"
#include "WaveHC.h"
byte mac[] = { 0x90, 0xA2, 0xDA, 0x00, 0x5E, 0x16 };
IPAddress ip( 192,168,2,17 );
EthernetServer server(80);
SdReader card; // This object holds the information for the card
FatVolume vol; // This holds the information for the partition on the card
FatReader root; // This holds the information for the filesystem on the card
FatReader f; // This holds the information for the file we're play
WaveHC wave; // This is the only wave (audio) object, since we will only play one at a time
// the names of the WAV files
char* trackname[] = {"0.WAV", "1.WAV", "2.WAV", "3.WAV", "4.WAV",
"5.WAV", "6.WAV", "7.WAV", "8.WAV", "9.WAV", "P.WAV"};
// RAM and SD card checks
int freeRam(void)
{
extern int __bss_end;
extern int *__brkval;
int free_memory;
if((int)__brkval == 0) {
free_memory = ((int)&free_memory) - ((int)&__bss_end);
}
else {
free_memory = ((int)&free_memory) - ((int)__brkval);
}
return free_memory;
}
void sdErrorCheck(void)
{
if (!card.errorCode()) return;
putstring("\n\rSD I/O error: ");
Serial.print(card.errorCode(), HEX);
putstring(", ");
Serial.println(card.errorData(), HEX);
while(1);
}
int runOnce;
void setup()
{
Serial.begin(9600);
pinMode(10, OUTPUT); // Ethernet SS
pinMode(4, OUTPUT); // SD card SS
Ethernet.begin(mac, ip);
server.begin();
putstring("Free RAM: "); // This can help with debugging, running out of RAM is bad
Serial.println(freeRam()); // if this is under 150 bytes it may spell trouble!
if (!card.init()) { //play with 8 MHz spi (default faster!)
putstring_nl("Card init. failed!"); // Something went wrong, lets print out why
sdErrorCheck();
while(1); // then 'halt' - do nothing!
}
// enable optimize read - some cards may timeout. Disable if you're having problems
card.partialBlockRead(true);
// Now we will look for a FAT partition!
uint8_t part;
for (part = 0; part < 5; part++) { // we have up to 5 slots to look in
if (vol.init(card, part))
break; // we found one, lets bail
}
if (part == 5) { // if we ended up not finding one :(
putstring_nl("No valid FAT partition!");
sdErrorCheck(); // Something went wrong, lets print out why
while(1); // then 'halt' - do nothing!
}
// Lets tell the user about what we found
putstring("Using partition ");
Serial.print(part, DEC);
putstring(", type is FAT");
Serial.println(vol.fatType(),DEC); // FAT16 or FAT32?
// Try to open the root directory
if (!root.openRoot(vol)) {
putstring_nl("Can't open root dir!"); // Something went wrong,
while(1); // then 'halt' - do nothing!
}
putstring_nl("Files found:");
root.ls();
// Whew! We got past the tough parts.
putstring_nl("Waveshield Ready!");
}
void loop()
{
EthernetClient client = server.available();
if (runOnce == 0){
client.stop();
delay(20);
enableWaveShield();
playfile(trackname[2]);
runOnce = 1;
}
}
// Plays a full file from beginning to end with no pause.
void playcomplete(char *name) {
enableWaveShield();
// call our helper to find and play this name
playfile(name);
while (wave.isplaying) {
// do nothing while its playing
}
// now its done playing
}
void playfile(char *name) {
// see if the wave object is currently doing something
if (wave.isplaying) {// already playing something, so stop it!
wave.stop(); // stop it
}
// look in the root directory and open the file
if (!f.open(root, name)) {
putstring("Couldn't open file "); Serial.print(name); return;
}
// OK read the file and turn it into a wave object
if (!wave.create(f)) {
putstring_nl("Not a valid WAV"); return;
}
// ok time to play! start playback
wave.play();
}
void enableEthernet(){
digitalWrite(4, HIGH);
digitalWrite(10, LOW);
}
void enableWaveShield(){
digitalWrite(10, HIGH);
digitalWrite(4, LOW);
}
With the above code the web server works well, but the wave shield is silent. When I comment out the server part of the code in void loop like in the example below the WAV file is played properly.
void loop()
{
// EthernetClient client = server.available();
if (runOnce == 0){
// client.stop();
delay(20);
enableWaveShield();
playfile(trackname[2]);
runOnce = 1;
}
}
Has anyone experienced such a problem? Is there a solution?