Diff: main.cpp

Revision:

0:6b753f761943

Child:

1:521604503e81

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Oct 12 21:22:49 2018 +0000
@@ -0,0 +1,199 @@
+// ----------------------------------------------------------------------------
+// Copyright 2016-2018 ARM Ltd.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// ----------------------------------------------------------------------------
+
+#include "mbed.h"
+#include <stdio.h>
+#include <errno.h>
+
+#include "qspi_api.h"
+#include "QSPI.h"
+#include "qspi-blockdevice/QSPIFBlockDevice.h"
+#define DEVICE_QSPI
+
+#include "FATFileSystem.h"
+#include "LittleFileSystem.h"
+#include "simple-mbed-cloud-client.h"
+// #include "SDBlockDevice.h"
+#include "ISM43362Interface.h"
+// #include "SPIFBlockDevice.h" // to use onboard spi flash
+
+#define WIFI_SSID       "mbed"
+#define WIFI_PASSWORD   "workshop-password"
+
+
+
+
+// An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
+// This is great because things such as network operations are illegal in ISR, so updating a resource in a button's fall() function is not allowed
+EventQueue eventQueue;
+
+// Declaring net interface as a global variable instead of local to avoid stack overflow
+ISM43362Interface net;
+
+// Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available)
+// SDBlockDevice sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS);
+QSPIFBlockDevice sd(PE_12, PE_13, PE_14, PE_15,PE_10,PE_11,0,8000000);
+
+// FATFileSystem fs("sd", &bd);
+
+LittleFileSystem fs("sd");
+
+// Declaring pointers for access to Mbed Cloud Client resources outside of main()
+MbedCloudClientResource *button_res;
+MbedCloudClientResource *pattern_res;
+
+// This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button
+void fake_button_press() {
+    int v = button_res->get_value_int() + 1;
+
+    button_res->set_value(v);
+
+    printf("Simulated button clicked %d times\n", v);
+}
+
+/**
+ * PUT handler
+ * @param resource The resource that triggered the callback
+ * @param newValue Updated value for the resource
+ */
+void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
+    printf("PUT received, new value: %s\n", newValue.c_str());
+}
+
+/**
+ * POST handler
+ * @param resource The resource that triggered the callback
+ * @param buffer If a body was passed to the POST function, this contains the data.
+ *               Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
+ * @param size Size of the body
+ */
+void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
+    printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str());
+
+    static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern
+
+    // Parse the pattern string, and toggle the LED in that pattern
+    string s = std::string(pattern_res->get_value().c_str());
+    size_t i = 0;
+    size_t pos = s.find(':');
+    while (pos != string::npos) {
+        wait_ms(atoi(s.substr(i, pos - i).c_str()));
+        augmentedLed = !augmentedLed;
+
+        i = ++pos;
+        pos = s.find(':', pos);
+
+        if (pos == string::npos) {
+            wait_ms(atoi(s.substr(i, s.length()).c_str()));
+            augmentedLed = !augmentedLed;
+        }
+    }
+}
+
+/**
+ * Notification callback handler
+ * @param resource The resource that triggered the callback
+ * @param status The delivery status of the notification
+ */
+void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
+    printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
+}
+
+/**
+ * Registration callback handler
+ * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
+ */
+void registered(const ConnectorClientEndpointInfo *endpoint) {
+    printf("Connected to Mbed Cloud. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
+}
+
+int main(void) {
+    printf("Starting Simple Mbed Cloud Client example\n");
+
+    printf("Checking SDCard is Formatted\r\n");
+    int err = fs.mount(&sd);
+    printf("%s\n", (err ? "Fail :(" : "OK"));
+    if (err) {
+        // Reformat if we can't mount the filesystem
+        // this should only happen on the first boot
+        printf("No filesystem found, formatting... ");
+        fflush(stdout);
+        err = fs.reformat(&sd);
+        printf("%s\n", (err ? "Fail :(" : "OK"));
+        if (err) {
+            error("error: %s (%d)\n", strerror(-err), err);
+        }
+    }
+    // err = fs.unmount();
+    // printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
+    // if (err < 0) {
+    //     error("error: %s (%d)\n", strerror(-err), err);
+    // }
+
+    printf("Connecting to the network using Wifi...\n");
+
+    // Connect to the internet (DHCP is expected to be on)
+    nsapi_error_t status = net.connect(WIFI_SSID, WIFI_PASSWORD, (strlen(WIFI_PASSWORD) > 1) ? NSAPI_SECURITY_WPA_WPA2 : NSAPI_SECURITY_NONE);
+
+    if (status != 0) {
+        printf("Connecting to the network failed %d!\n", status);
+        return -1;
+    }
+
+    printf("Connected to the network successfully. IP address: %s\n", net.get_ip_address());
+
+    // SimpleMbedCloudClient handles registering over LwM2M to Mbed Cloud
+    SimpleMbedCloudClient client(&net, &sd, &fs);
+    int client_status = client.init();
+    if (client_status != 0) {
+        printf("Initializing Mbed Cloud Client failed (%d)\n", client_status);
+        return -1;
+    }
+
+    // Creating resources, which can be written or read from the cloud
+    button_res = client.create_resource("3200/0/5501", "button_count");
+    button_res->set_value(0);
+    button_res->methods(M2MMethod::GET);
+    button_res->observable(true);
+    button_res->attach_notification_callback(button_callback);
+
+    pattern_res = client.create_resource("3201/0/5853", "blink_pattern");
+    pattern_res->set_value("500:500:500:500:500:500:500:500");
+    pattern_res->methods(M2MMethod::GET | M2MMethod::PUT);
+    pattern_res->attach_put_callback(pattern_updated);
+
+    MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action");
+    blink_res->methods(M2MMethod::POST);
+    blink_res->attach_post_callback(blink_callback);
+
+    printf("Initialized Mbed Cloud Client. Registering...\n");
+
+    // Callback that fires when registering is complete
+    client.on_registered(&registered);
+
+    // Register with Mbed Cloud
+    client.register_and_connect();
+
+    // Placeholder for callback to update local resource when GET comes.
+    // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
+    Ticker timer;
+    timer.attach(eventQueue.event(&fake_button_press), 5.0);
+
+    // You can easily run the eventQueue in a separate thread if required
+    eventQueue.dispatch_forever();
+}