Hi,
I have a Mega 1280, the latest Ethernet Shield, and an SPI-connected SCP1000 (on a Sparkfun Breakout).
I am using this library (http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1236443720/14#14) to interface with the SCP1000. I have changed the following to correspond to the mega:
- const byte DataOutPin = 50;
- const byte DataInPin = 51;
- const byte SPIClockPin = 52;
I initialise the SCP1000 with a slave select pin of 37.
The SCP1000 and Ethernet Shield work fine independently. My research suggests there are/have been problems with the Ethernet Shield co-existing with other SPI devices.
I have tried setting the SS pins of both devices to LOW to enable and HIGH to disable, and PORTB |= _BV(4); to reset the SS on the Ethernet Shield.
My current hacky code is as follows - any ideas?
/*
Web Server
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 4 Sep 2010
by Tom Igoe
*/
#include <SPI.h>
#include <Ethernet.h>
#include <SCP1000.h>
#define PIN_BAROM_CSB 37 //also referred to as Slave Select
#define PIN_ETHER_SS 10 //also referred to as Slave Select
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192,168,0, 16 };
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
Server server(80);
SCP1000 scp1000(PIN_BAROM_CSB);
void setup()
{
// start the Ethernet connection and the server:
pinMode(PIN_ETHER_SS, OUTPUT);
digitalWrite(PIN_ETHER_SS, HIGH);
pinMode(PIN_BAROM_CSB, OUTPUT);
digitalWrite(PIN_BAROM_CSB, LOW);
scp1000.init();
scp1000.readSensor();
digitalWrite(PIN_BAROM_CSB, HIGH);
digitalWrite(PIN_ETHER_SS, LOW);
Ethernet.begin(mac, ip);
server.begin();
}
void loop()
{
// listen for incoming clients
Client client = server.available();
if (client) {
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
// client.print("Temprature (C/F): ");
// client.print(scp1000.TempC);
// client.print(" / ");
// client.println( (1.8*scp1000.TempC + 32) );
// client.print("Pressure (hPa): ");
// client.println(scp1000.BaroP);
// client.println();
// client.println();
// output the value of each analog input pin
for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
client.print("analog input ");
client.print(analogChannel);
client.print(" is ");
client.print(analogRead(analogChannel));
client.println("
");
}
break;
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
}
else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
}
}