Nespresso RGB Sensor / Mbed 2 deprecated nespresso_endpoint

This is a full demo that connects to mbed Device Server. It is used with a I2C Grove Color sensor, so it should be compatible on all platforms that support Ethernet.

Dependencies:   ColorDetectorV2 EthernetInterface mbed-rtos mbed nsdl

Fork of nespresso_endpoint by Brian Daniels

mbed Software Configuration

The default mbed Device Server (NSP or mDS) configuration is used by an instance of the web app (Barista) here: http://barista-test.cloudapp.net:4005.

In main.cpp, find the following lines:

// ****************************************************************************
// Configuration section
 
// I2C Settings
#define COLOR_SENSOR_SCL I2C_SCL
#define COLOR_SENSOR_SDA I2C_SDA
 
// Ethernet configuration
/* Define this to enable DHCP, otherwise manual address configuration is used */
#define DHCP
 
/* Manual IP configurations, if DHCP not defined */
#define IP      "0.0.0.0"
#define MASK    "255.255.255.0"
#define GW      "0.0.0.0"
 
// NSP configuration
/* Change this IP address to that of your mbed Device Server installation if you're not using mbed Connector */
static const char* NSP_ADDRESS = "api.connector.mbed.org";
static const int NSP_PORT = 5683;
char endpoint_name[] = "nespresso-machine-ethernet";
uint8_t ep_type[] = {"nespresso-endpoint"};
char nsp_domain[] = "56645321f5e24c49908e42f4d71b9ccb";
uint8_t lifetime_ptr[] = {"1200"};
 
// ****************************************************************************

Edit COLOR_SENSOR_SCL and COLOR_SENSOR_SDA to the appropriate I2C pins on your mbed platform.

You should not edit the DHCP/static IP settings if you are not using a static IP address. If you are using a static IP address, provide the appropriate information and remove the following line:

#define DHCP

Change endpoint_name to uniquely identify your Nespresso endpoint.

If you are using mbed Connector, change the nsp_domain string to your domain.

If you are using your own installation of mDS, you should change NSP_ADDRESS to the url of your mDS installation, NSP_PORT if you're using a non default port on mDS for CoAP, and nsp_domain to a valid domain on your mDS instance ("domain" is the default mDS domain).

Diff: main.cpp

Revision:
0:0782597771bc
Child:
2:f26ac95c5029
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Apr 15 19:31:33 2015 +0000
@@ -0,0 +1,164 @@
+#include "mbed.h"
+#include "EthernetInterface.h"
+#include "nsdl_support.h"
+#include "dbg.h"
+#include "GroveColourSensor.h"
+#include "ColorDetector.h"
+#include "color_detector.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+
+// ****************************************************************************
+// Configuration section
+
+// Ethernet configuration
+/* Define this to enable DHCP, otherwise manual address configuration is used */
+#define DHCP
+
+/* Manual IP configurations, if DHCP not defined */
+#define IP      "0.0.0.0"
+#define MASK    "255.255.255.0"
+#define GW      "0.0.0.0"
+
+// NSP configuration
+/* Change this IP address to that of your mbed Device Server installation */
+static const char* NSP_ADDRESS = "10.112.30.70";
+static const int NSP_PORT = 5683;
+char endpoint_name[] = "nespresso-client";
+uint8_t ep_type[] = {"mbed_device"};
+uint8_t lifetime_ptr[] = {"1200"};
+
+// ****************************************************************************
+// Ethernet initialization
+
+EthernetInterface eth;
+
+static void ethernet_init()
+{
+    // Initialize network
+#ifdef DHCP
+    NSDL_DEBUG("DHCP in use\r\n");
+    eth.init();
+#else
+    eth.init(IP, MASK, GW);
+#endif
+    if(eth.connect(30000) == 0)
+        pc.printf("Connect OK\n\r");
+
+    NSDL_DEBUG("IP Address:%s ", eth.getIPAddress());
+}
+
+// ****************************************************************************
+// NSP initialization
+
+UDPSocket server;
+Endpoint nsp;
+
+static void nsp_init()
+{
+    server.init();
+    server.bind(NSP_PORT);
+
+    nsp.set_address(NSP_ADDRESS, NSP_PORT);
+    
+    NSDL_DEBUG("name: %s", endpoint_name);
+    NSDL_DEBUG("NSP=%s - port %d\n", NSP_ADDRESS, NSP_PORT);
+}
+
+// ****************************************************************************
+// Resource creation
+
+static int create_resources()
+{
+    sn_nsdl_resource_info_s *resource_ptr = NULL;
+    sn_nsdl_ep_parameters_s *endpoint_ptr = NULL;
+    
+    NSDL_DEBUG("Creating resources");
+
+    // Create resources
+    resource_ptr = (sn_nsdl_resource_info_s*)nsdl_alloc(sizeof(sn_nsdl_resource_info_s));
+    if(!resource_ptr)
+        return 0;
+    memset(resource_ptr, 0, sizeof(sn_nsdl_resource_info_s));
+
+    resource_ptr->resource_parameters_ptr = (sn_nsdl_resource_parameters_s*)nsdl_alloc(sizeof(sn_nsdl_resource_parameters_s));
+    if(!resource_ptr->resource_parameters_ptr)
+    {
+        nsdl_free(resource_ptr);
+        return 0;
+    }
+    memset(resource_ptr->resource_parameters_ptr, 0, sizeof(sn_nsdl_resource_parameters_s));
+
+    // Dynamic resources
+    create_color_detector_resource(resource_ptr);
+    
+    // Register with NSP
+    endpoint_ptr = nsdl_init_register_endpoint(endpoint_ptr, (uint8_t*)endpoint_name, ep_type, lifetime_ptr);
+    if(sn_nsdl_register_endpoint(endpoint_ptr) != 0)
+        pc.printf("NSP registering failed\r\n");
+    else
+        pc.printf("NSP registering OK\r\n");
+    nsdl_clean_register_endpoint(&endpoint_ptr);
+
+    nsdl_free(resource_ptr->resource_parameters_ptr);
+    nsdl_free(resource_ptr);
+    return 1;
+}
+
+// ****************************************************************************
+// Program entry point
+
+int main()
+{
+    NSDL_DEBUG("mbed Nespresso Demo\n");
+    
+    // Begin Color Sensor init
+    
+    // First, ensure I2C bus is released by toggling clock (fixes reset errors)
+    DigitalOut scl_dummy(I2C_SCL);
+    
+    for (int i = 0; i < 100; i++) {
+        scl_dummy = !scl_dummy;
+        wait_us(2);
+    }
+    
+    // Next, initialize I2C
+    I2C i2c(I2C_SDA, I2C_SCL);
+    
+    // Create color sensor instance
+    GroveColourSensor colorSensor(&i2c);
+    
+    // Various config
+    colorSensor.powerUp();
+    colorSensor.setGain(1);
+    colorSensor.setBlockRead();
+    
+    // Create color detector
+    ColorDetector detector(&colorSensor, 50);
+    detector.setBaseline();
+    
+    // Pass reference to color detector
+    set_color_detector(&detector);
+    
+    // Initialize Ethernet interface first
+    ethernet_init();
+    
+    // Initialize NSP node
+    nsp_init();
+    
+    // Initialize NSDL stack
+    nsdl_init();
+    
+    // Create NSDL resources
+    create_resources();
+    
+    nsdl_event_loop_init();
+    
+    while(true) {
+        // Check if any nsdl events need to be handled
+        nsdl_event_loop_run_once();
+        
+        // Sample the color detector and potentially send samples to mDS
+        run_color_detector();
+    }
+}