Jim Carver / Mbed OS mbed-cloud-workshop-connect

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main.cpp@0:6b753f761943, 2018-10-12 (annotated)

Committer:
JimCarver
Date:
Fri Oct 12 21:22:49 2018 +0000
Revision:
0:6b753f761943
Initial commit

Who changed what in which revision?

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JimCarver 0:6b753f761943 1 // ----------------------------------------------------------------------------
JimCarver 0:6b753f761943 2 // Copyright 2016-2018 ARM Ltd.
JimCarver 0:6b753f761943 3 //
JimCarver 0:6b753f761943 4 // SPDX-License-Identifier: Apache-2.0
JimCarver 0:6b753f761943 5 //
JimCarver 0:6b753f761943 6 // Licensed under the Apache License, Version 2.0 (the "License");
JimCarver 0:6b753f761943 7 // you may not use this file except in compliance with the License.
JimCarver 0:6b753f761943 8 // You may obtain a copy of the License at
JimCarver 0:6b753f761943 9 //
JimCarver 0:6b753f761943 10 // http://www.apache.org/licenses/LICENSE-2.0
JimCarver 0:6b753f761943 11 //
JimCarver 0:6b753f761943 12 // Unless required by applicable law or agreed to in writing, software
JimCarver 0:6b753f761943 13 // distributed under the License is distributed on an "AS IS" BASIS,
JimCarver 0:6b753f761943 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JimCarver 0:6b753f761943 15 // See the License for the specific language governing permissions and
JimCarver 0:6b753f761943 16 // limitations under the License.
JimCarver 0:6b753f761943 17 // ----------------------------------------------------------------------------
JimCarver 0:6b753f761943 18
JimCarver 0:6b753f761943 19 #include "mbed.h"
JimCarver 0:6b753f761943 20 #include <stdio.h>
JimCarver 0:6b753f761943 21 #include <errno.h>
JimCarver 0:6b753f761943 22
JimCarver 0:6b753f761943 23 #include "qspi_api.h"
JimCarver 0:6b753f761943 24 #include "QSPI.h"
JimCarver 0:6b753f761943 25 #include "qspi-blockdevice/QSPIFBlockDevice.h"
JimCarver 0:6b753f761943 26 #define DEVICE_QSPI
JimCarver 0:6b753f761943 27
JimCarver 0:6b753f761943 28 #include "FATFileSystem.h"
JimCarver 0:6b753f761943 29 #include "LittleFileSystem.h"
JimCarver 0:6b753f761943 30 #include "simple-mbed-cloud-client.h"
JimCarver 0:6b753f761943 31 // #include "SDBlockDevice.h"
JimCarver 0:6b753f761943 32 #include "ISM43362Interface.h"
JimCarver 0:6b753f761943 33 // #include "SPIFBlockDevice.h" // to use onboard spi flash
JimCarver 0:6b753f761943 34
JimCarver 0:6b753f761943 35 #define WIFI_SSID "mbed"
JimCarver 0:6b753f761943 36 #define WIFI_PASSWORD "workshop-password"
JimCarver 0:6b753f761943 37
JimCarver 0:6b753f761943 38
JimCarver 0:6b753f761943 39
JimCarver 0:6b753f761943 40
JimCarver 0:6b753f761943 41 // An event queue is a very useful structure to debounce information between contexts (e.g. ISR and normal threads)
JimCarver 0:6b753f761943 42 // 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
JimCarver 0:6b753f761943 43 EventQueue eventQueue;
JimCarver 0:6b753f761943 44
JimCarver 0:6b753f761943 45 // Declaring net interface as a global variable instead of local to avoid stack overflow
JimCarver 0:6b753f761943 46 ISM43362Interface net;
JimCarver 0:6b753f761943 47
JimCarver 0:6b753f761943 48 // Storage implementation definition, currently using SDBlockDevice (SPI flash, DataFlash, and internal flash are also available)
JimCarver 0:6b753f761943 49 // SDBlockDevice sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS);
JimCarver 0:6b753f761943 50 QSPIFBlockDevice sd(PE_12, PE_13, PE_14, PE_15,PE_10,PE_11,0,8000000);
JimCarver 0:6b753f761943 51
JimCarver 0:6b753f761943 52 // FATFileSystem fs("sd", &bd);
JimCarver 0:6b753f761943 53
JimCarver 0:6b753f761943 54 LittleFileSystem fs("sd");
JimCarver 0:6b753f761943 55
JimCarver 0:6b753f761943 56 // Declaring pointers for access to Mbed Cloud Client resources outside of main()
JimCarver 0:6b753f761943 57 MbedCloudClientResource *button_res;
JimCarver 0:6b753f761943 58 MbedCloudClientResource *pattern_res;
JimCarver 0:6b753f761943 59
JimCarver 0:6b753f761943 60 // This function gets triggered by the timer. It's easy to replace it by an InterruptIn and fall() mode on a real button
JimCarver 0:6b753f761943 61 void fake_button_press() {
JimCarver 0:6b753f761943 62 int v = button_res->get_value_int() + 1;
JimCarver 0:6b753f761943 63
JimCarver 0:6b753f761943 64 button_res->set_value(v);
JimCarver 0:6b753f761943 65
JimCarver 0:6b753f761943 66 printf("Simulated button clicked %d times\n", v);
JimCarver 0:6b753f761943 67 }
JimCarver 0:6b753f761943 68
JimCarver 0:6b753f761943 69 /**
JimCarver 0:6b753f761943 70 * PUT handler
JimCarver 0:6b753f761943 71 * @param resource The resource that triggered the callback
JimCarver 0:6b753f761943 72 * @param newValue Updated value for the resource
JimCarver 0:6b753f761943 73 */
JimCarver 0:6b753f761943 74 void pattern_updated(MbedCloudClientResource *resource, m2m::String newValue) {
JimCarver 0:6b753f761943 75 printf("PUT received, new value: %s\n", newValue.c_str());
JimCarver 0:6b753f761943 76 }
JimCarver 0:6b753f761943 77
JimCarver 0:6b753f761943 78 /**
JimCarver 0:6b753f761943 79 * POST handler
JimCarver 0:6b753f761943 80 * @param resource The resource that triggered the callback
JimCarver 0:6b753f761943 81 * @param buffer If a body was passed to the POST function, this contains the data.
JimCarver 0:6b753f761943 82 * Note that the buffer is deallocated after leaving this function, so copy it if you need it longer.
JimCarver 0:6b753f761943 83 * @param size Size of the body
JimCarver 0:6b753f761943 84 */
JimCarver 0:6b753f761943 85 void blink_callback(MbedCloudClientResource *resource, const uint8_t *buffer, uint16_t size) {
JimCarver 0:6b753f761943 86 printf("POST received. Going to blink LED pattern: %s\n", pattern_res->get_value().c_str());
JimCarver 0:6b753f761943 87
JimCarver 0:6b753f761943 88 static DigitalOut augmentedLed(LED1); // LED that is used for blinking the pattern
JimCarver 0:6b753f761943 89
JimCarver 0:6b753f761943 90 // Parse the pattern string, and toggle the LED in that pattern
JimCarver 0:6b753f761943 91 string s = std::string(pattern_res->get_value().c_str());
JimCarver 0:6b753f761943 92 size_t i = 0;
JimCarver 0:6b753f761943 93 size_t pos = s.find(':');
JimCarver 0:6b753f761943 94 while (pos != string::npos) {
JimCarver 0:6b753f761943 95 wait_ms(atoi(s.substr(i, pos - i).c_str()));
JimCarver 0:6b753f761943 96 augmentedLed = !augmentedLed;
JimCarver 0:6b753f761943 97
JimCarver 0:6b753f761943 98 i = ++pos;
JimCarver 0:6b753f761943 99 pos = s.find(':', pos);
JimCarver 0:6b753f761943 100
JimCarver 0:6b753f761943 101 if (pos == string::npos) {
JimCarver 0:6b753f761943 102 wait_ms(atoi(s.substr(i, s.length()).c_str()));
JimCarver 0:6b753f761943 103 augmentedLed = !augmentedLed;
JimCarver 0:6b753f761943 104 }
JimCarver 0:6b753f761943 105 }
JimCarver 0:6b753f761943 106 }
JimCarver 0:6b753f761943 107
JimCarver 0:6b753f761943 108 /**
JimCarver 0:6b753f761943 109 * Notification callback handler
JimCarver 0:6b753f761943 110 * @param resource The resource that triggered the callback
JimCarver 0:6b753f761943 111 * @param status The delivery status of the notification
JimCarver 0:6b753f761943 112 */
JimCarver 0:6b753f761943 113 void button_callback(MbedCloudClientResource *resource, const NoticationDeliveryStatus status) {
JimCarver 0:6b753f761943 114 printf("Button notification, status %s (%d)\n", MbedCloudClientResource::delivery_status_to_string(status), status);
JimCarver 0:6b753f761943 115 }
JimCarver 0:6b753f761943 116
JimCarver 0:6b753f761943 117 /**
JimCarver 0:6b753f761943 118 * Registration callback handler
JimCarver 0:6b753f761943 119 * @param endpoint Information about the registered endpoint such as the name (so you can find it back in portal)
JimCarver 0:6b753f761943 120 */
JimCarver 0:6b753f761943 121 void registered(const ConnectorClientEndpointInfo *endpoint) {
JimCarver 0:6b753f761943 122 printf("Connected to Mbed Cloud. Endpoint Name: %s\n", endpoint->internal_endpoint_name.c_str());
JimCarver 0:6b753f761943 123 }
JimCarver 0:6b753f761943 124
JimCarver 0:6b753f761943 125 int main(void) {
JimCarver 0:6b753f761943 126 printf("Starting Simple Mbed Cloud Client example\n");
JimCarver 0:6b753f761943 127
JimCarver 0:6b753f761943 128 printf("Checking SDCard is Formatted\r\n");
JimCarver 0:6b753f761943 129 int err = fs.mount(&sd);
JimCarver 0:6b753f761943 130 printf("%s\n", (err ? "Fail :(" : "OK"));
JimCarver 0:6b753f761943 131 if (err) {
JimCarver 0:6b753f761943 132 // Reformat if we can't mount the filesystem
JimCarver 0:6b753f761943 133 // this should only happen on the first boot
JimCarver 0:6b753f761943 134 printf("No filesystem found, formatting... ");
JimCarver 0:6b753f761943 135 fflush(stdout);
JimCarver 0:6b753f761943 136 err = fs.reformat(&sd);
JimCarver 0:6b753f761943 137 printf("%s\n", (err ? "Fail :(" : "OK"));
JimCarver 0:6b753f761943 138 if (err) {
JimCarver 0:6b753f761943 139 error("error: %s (%d)\n", strerror(-err), err);
JimCarver 0:6b753f761943 140 }
JimCarver 0:6b753f761943 141 }
JimCarver 0:6b753f761943 142 // err = fs.unmount();
JimCarver 0:6b753f761943 143 // printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
JimCarver 0:6b753f761943 144 // if (err < 0) {
JimCarver 0:6b753f761943 145 // error("error: %s (%d)\n", strerror(-err), err);
JimCarver 0:6b753f761943 146 // }
JimCarver 0:6b753f761943 147
JimCarver 0:6b753f761943 148 printf("Connecting to the network using Wifi...\n");
JimCarver 0:6b753f761943 149
JimCarver 0:6b753f761943 150 // Connect to the internet (DHCP is expected to be on)
JimCarver 0:6b753f761943 151 nsapi_error_t status = net.connect(WIFI_SSID, WIFI_PASSWORD, (strlen(WIFI_PASSWORD) > 1) ? NSAPI_SECURITY_WPA_WPA2 : NSAPI_SECURITY_NONE);
JimCarver 0:6b753f761943 152
JimCarver 0:6b753f761943 153 if (status != 0) {
JimCarver 0:6b753f761943 154 printf("Connecting to the network failed %d!\n", status);
JimCarver 0:6b753f761943 155 return -1;
JimCarver 0:6b753f761943 156 }
JimCarver 0:6b753f761943 157
JimCarver 0:6b753f761943 158 printf("Connected to the network successfully. IP address: %s\n", net.get_ip_address());
JimCarver 0:6b753f761943 159
JimCarver 0:6b753f761943 160 // SimpleMbedCloudClient handles registering over LwM2M to Mbed Cloud
JimCarver 0:6b753f761943 161 SimpleMbedCloudClient client(&net, &sd, &fs);
JimCarver 0:6b753f761943 162 int client_status = client.init();
JimCarver 0:6b753f761943 163 if (client_status != 0) {
JimCarver 0:6b753f761943 164 printf("Initializing Mbed Cloud Client failed (%d)\n", client_status);
JimCarver 0:6b753f761943 165 return -1;
JimCarver 0:6b753f761943 166 }
JimCarver 0:6b753f761943 167
JimCarver 0:6b753f761943 168 // Creating resources, which can be written or read from the cloud
JimCarver 0:6b753f761943 169 button_res = client.create_resource("3200/0/5501", "button_count");
JimCarver 0:6b753f761943 170 button_res->set_value(0);
JimCarver 0:6b753f761943 171 button_res->methods(M2MMethod::GET);
JimCarver 0:6b753f761943 172 button_res->observable(true);
JimCarver 0:6b753f761943 173 button_res->attach_notification_callback(button_callback);
JimCarver 0:6b753f761943 174
JimCarver 0:6b753f761943 175 pattern_res = client.create_resource("3201/0/5853", "blink_pattern");
JimCarver 0:6b753f761943 176 pattern_res->set_value("500:500:500:500:500:500:500:500");
JimCarver 0:6b753f761943 177 pattern_res->methods(M2MMethod::GET | M2MMethod::PUT);
JimCarver 0:6b753f761943 178 pattern_res->attach_put_callback(pattern_updated);
JimCarver 0:6b753f761943 179
JimCarver 0:6b753f761943 180 MbedCloudClientResource *blink_res = client.create_resource("3201/0/5850", "blink_action");
JimCarver 0:6b753f761943 181 blink_res->methods(M2MMethod::POST);
JimCarver 0:6b753f761943 182 blink_res->attach_post_callback(blink_callback);
JimCarver 0:6b753f761943 183
JimCarver 0:6b753f761943 184 printf("Initialized Mbed Cloud Client. Registering...\n");
JimCarver 0:6b753f761943 185
JimCarver 0:6b753f761943 186 // Callback that fires when registering is complete
JimCarver 0:6b753f761943 187 client.on_registered(&registered);
JimCarver 0:6b753f761943 188
JimCarver 0:6b753f761943 189 // Register with Mbed Cloud
JimCarver 0:6b753f761943 190 client.register_and_connect();
JimCarver 0:6b753f761943 191
JimCarver 0:6b753f761943 192 // Placeholder for callback to update local resource when GET comes.
JimCarver 0:6b753f761943 193 // The timer fires on an interrupt context, but debounces it to the eventqueue, so it's safe to do network operations
JimCarver 0:6b753f761943 194 Ticker timer;
JimCarver 0:6b753f761943 195 timer.attach(eventQueue.event(&fake_button_press), 5.0);
JimCarver 0:6b753f761943 196
JimCarver 0:6b753f761943 197 // You can easily run the eventQueue in a separate thread if required
JimCarver 0:6b753f761943 198 eventQueue.dispatch_forever();
JimCarver 0:6b753f761943 199 }