BERG Cloud / Mbed 2 deprecated LittleCounter-Example

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Dependencies:   BERGCloud mbed

main.cpp@0:4e40266a9d41, 2013-11-19 (annotated)

Committer:
nickludlam
Date:
Tue Nov 19 16:19:24 2013 +0000
Revision:
0:4e40266a9d41
Example mbed code for the Little Counter tutorial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nickludlam 0:4e40266a9d41 1 /*
nickludlam 0:4e40266a9d41 2 LittleCounter - A simple demonstration of how you use the BERG Cloud mbed
nickludlam 0:4e40266a9d41 3 client libraries to fetch and send data to BERG Cloud. For
nickludlam 0:4e40266a9d41 4 more info see http://bergcloud.com/
nickludlam 0:4e40266a9d41 5
nickludlam 0:4e40266a9d41 6 This example code is in the public domain.
nickludlam 0:4e40266a9d41 7
nickludlam 0:4e40266a9d41 8 https://github.com/bergcloud/devshield-mbed
nickludlam 0:4e40266a9d41 9 */
nickludlam 0:4e40266a9d41 10
nickludlam 0:4e40266a9d41 11 #include "mbed.h"
nickludlam 0:4e40266a9d41 12 #include "BERGCloudMbed.h"
nickludlam 0:4e40266a9d41 13 #include <sstream> // std::stringstream
nickludlam 0:4e40266a9d41 14
nickludlam 0:4e40266a9d41 15 // Select the pins to be used for the SPI interface
nickludlam 0:4e40266a9d41 16 #if defined(TARGET_LPC176X) || defined(TARGET_LPC11UXX)
nickludlam 0:4e40266a9d41 17 // mbed DIP40 pinout
nickludlam 0:4e40266a9d41 18 #define MOSI_PIN p5
nickludlam 0:4e40266a9d41 19 #define MISO_PIN p6
nickludlam 0:4e40266a9d41 20 #define SCLK_PIN p7
nickludlam 0:4e40266a9d41 21 #define nSSEL_PIN p8
nickludlam 0:4e40266a9d41 22 #endif
nickludlam 0:4e40266a9d41 23
nickludlam 0:4e40266a9d41 24 #if defined(TARGET_KL25Z)
nickludlam 0:4e40266a9d41 25 // Arduino compatible pinout
nickludlam 0:4e40266a9d41 26 #define MOSI_PIN D11
nickludlam 0:4e40266a9d41 27 #define MISO_PIN D12
nickludlam 0:4e40266a9d41 28 #define SCLK_PIN D13
nickludlam 0:4e40266a9d41 29 #define nSSEL_PIN D10
nickludlam 0:4e40266a9d41 30 #endif
nickludlam 0:4e40266a9d41 31
nickludlam 0:4e40266a9d41 32 #if !defined(MOSI_PIN) || !defined(MISO_PIN) || !defined(SCLK_PIN) || !defined(nSSEL_PIN)
nickludlam 0:4e40266a9d41 33 #error Please add the pin names for your microcontroller.
nickludlam 0:4e40266a9d41 34 #endif
nickludlam 0:4e40266a9d41 35
nickludlam 0:4e40266a9d41 36 // The Project Key ties this code into a Project on developer.bergcloud.com
nickludlam 0:4e40266a9d41 37 const uint8_t PROJECT_KEY[BC_KEY_SIZE_BYTES] = \
nickludlam 0:4e40266a9d41 38 {0x8B,0x05,0xF7,0x25,0x10,0x54,0x0A,0xE4,0x7C,0x35,0xEE,0xE7,0x26,0xDC,0xD5,0xA8};
nickludlam 0:4e40266a9d41 39
nickludlam 0:4e40266a9d41 40 // The version of your code
nickludlam 0:4e40266a9d41 41 #define VERSION 0x0001
nickludlam 0:4e40266a9d41 42
nickludlam 0:4e40266a9d41 43 // Define your commands and events here, according to the schema from bergcloud.com
nickludlam 0:4e40266a9d41 44 #define COMMAND_SET_COUNTER 0x01
nickludlam 0:4e40266a9d41 45 #define COMMAND_DISPLAY_TEXT 0x02
nickludlam 0:4e40266a9d41 46 #define EVENT_COUNTER_CHANGED 0x01
nickludlam 0:4e40266a9d41 47
nickludlam 0:4e40266a9d41 48 // Forward declarations
nickludlam 0:4e40266a9d41 49 void loop(void);
nickludlam 0:4e40266a9d41 50
nickludlam 0:4e40266a9d41 51 // These two methods correspond to the two commands defined within the Little Counter
nickludlam 0:4e40266a9d41 52 // project on the BERG Cloud developer site
nickludlam 0:4e40266a9d41 53 void handleSetCounter(BERGCloudMessage&);
nickludlam 0:4e40266a9d41 54 void handleGreet(BERGCloudMessage&);
nickludlam 0:4e40266a9d41 55
nickludlam 0:4e40266a9d41 56 // Create an instance of the BERGCloudMbed class
nickludlam 0:4e40266a9d41 57 BERGCloudMbed BERGCloud;
nickludlam 0:4e40266a9d41 58
nickludlam 0:4e40266a9d41 59 // The counter we will increment and send up to the cloud
nickludlam 0:4e40266a9d41 60 int32_t counter;
nickludlam 0:4e40266a9d41 61
nickludlam 0:4e40266a9d41 62 int main(void)
nickludlam 0:4e40266a9d41 63 {
nickludlam 0:4e40266a9d41 64 BERGCloud.begin(MOSI_PIN, MISO_PIN, SCLK_PIN, nSSEL_PIN);
nickludlam 0:4e40266a9d41 65 printf("--- mbed reset ---\r\n");
nickludlam 0:4e40266a9d41 66
nickludlam 0:4e40266a9d41 67 counter = 0; // Initialise our counter
nickludlam 0:4e40266a9d41 68
nickludlam 0:4e40266a9d41 69 // Attempt to connect with our project key and build version
nickludlam 0:4e40266a9d41 70 if (BERGCloud.connect(PROJECT_KEY, VERSION)) {
nickludlam 0:4e40266a9d41 71 printf("Connected to network");
nickludlam 0:4e40266a9d41 72 } else {
nickludlam 0:4e40266a9d41 73 printf("BERGCloud.connect() returned false.");
nickludlam 0:4e40266a9d41 74 }
nickludlam 0:4e40266a9d41 75
nickludlam 0:4e40266a9d41 76 // Run continuously
nickludlam 0:4e40266a9d41 77 while (1)
nickludlam 0:4e40266a9d41 78 {
nickludlam 0:4e40266a9d41 79 // The loop() function handles commands and events
nickludlam 0:4e40266a9d41 80 loop();
nickludlam 0:4e40266a9d41 81 }
nickludlam 0:4e40266a9d41 82
nickludlam 0:4e40266a9d41 83 }
nickludlam 0:4e40266a9d41 84
nickludlam 0:4e40266a9d41 85 void loop(void)
nickludlam 0:4e40266a9d41 86 {
nickludlam 0:4e40266a9d41 87 // The ID of the command we've received.
nickludlam 0:4e40266a9d41 88 uint8_t commandID;
nickludlam 0:4e40266a9d41 89
nickludlam 0:4e40266a9d41 90 // The command and event objects we use below
nickludlam 0:4e40266a9d41 91 BERGCloudMessage command, event;
nickludlam 0:4e40266a9d41 92
nickludlam 0:4e40266a9d41 93 // Some simple string manipulation
nickludlam 0:4e40266a9d41 94
nickludlam 0:4e40266a9d41 95 ///////////////////////////////////////////////////////////////
nickludlam 0:4e40266a9d41 96 // Fetching commands //
nickludlam 0:4e40266a9d41 97 ///////////////////////////////////////////////////////////////
nickludlam 0:4e40266a9d41 98
nickludlam 0:4e40266a9d41 99 printf("Poll for command... ");
nickludlam 0:4e40266a9d41 100 if (BERGCloud.pollForCommand(command, commandID)) {
nickludlam 0:4e40266a9d41 101
nickludlam 0:4e40266a9d41 102 // Print the
nickludlam 0:4e40266a9d41 103 printf("got command with ID: %u\r\n", commandID);
nickludlam 0:4e40266a9d41 104
nickludlam 0:4e40266a9d41 105 // Here we can map the command IDs to method calls within our code
nickludlam 0:4e40266a9d41 106 switch (commandID) {
nickludlam 0:4e40266a9d41 107 case COMMAND_SET_COUNTER:
nickludlam 0:4e40266a9d41 108 // Command one contains an integer
nickludlam 0:4e40266a9d41 109 handleSetCounter(command);
nickludlam 0:4e40266a9d41 110 break;
nickludlam 0:4e40266a9d41 111 case COMMAND_DISPLAY_TEXT:
nickludlam 0:4e40266a9d41 112 // Command two is a simple message containing a string
nickludlam 0:4e40266a9d41 113 handleGreet(command);
nickludlam 0:4e40266a9d41 114 break;
nickludlam 0:4e40266a9d41 115 // Default case, we don't have a match for the Command ID
nickludlam 0:4e40266a9d41 116 default:
nickludlam 0:4e40266a9d41 117 printf("WARNING: Unknown command\r\n");
nickludlam 0:4e40266a9d41 118 }
nickludlam 0:4e40266a9d41 119 } else {
nickludlam 0:4e40266a9d41 120 // No command!
nickludlam 0:4e40266a9d41 121 printf("none.\r\n");
nickludlam 0:4e40266a9d41 122 }
nickludlam 0:4e40266a9d41 123
nickludlam 0:4e40266a9d41 124 ///////////////////////////////////////////////////////////////
nickludlam 0:4e40266a9d41 125 // Sending events //
nickludlam 0:4e40266a9d41 126 ///////////////////////////////////////////////////////////////
nickludlam 0:4e40266a9d41 127
nickludlam 0:4e40266a9d41 128 printf("Sending an event... ");
nickludlam 0:4e40266a9d41 129
nickludlam 0:4e40266a9d41 130 // In this Little Counter example we send up a string and a counter
nickludlam 0:4e40266a9d41 131 //
nickludlam 0:4e40266a9d41 132 // Packing is very straight forward. Just define your
nickludlam 0:4e40266a9d41 133 // BERGCloudMessage object and call pack() passing in each type
nickludlam 0:4e40266a9d41 134 // you wish to encode.
nickludlam 0:4e40266a9d41 135
nickludlam 0:4e40266a9d41 136 // There is currently a 64 byte limit on the size of events, so be
nickludlam 0:4e40266a9d41 137 // careful with how much data you're sending up!
nickludlam 0:4e40266a9d41 138
nickludlam 0:4e40266a9d41 139 event.pack("BERG"); // Pack a string
nickludlam 0:4e40266a9d41 140 event.pack(counter); // Pack an unsigned int32
nickludlam 0:4e40266a9d41 141
nickludlam 0:4e40266a9d41 142 // Send the event object
nickludlam 0:4e40266a9d41 143 if (BERGCloud.sendEvent(EVENT_COUNTER_CHANGED, event)) {
nickludlam 0:4e40266a9d41 144 printf("ok\r\n");
nickludlam 0:4e40266a9d41 145 } else {
nickludlam 0:4e40266a9d41 146 printf("failed/busy\r\n");
nickludlam 0:4e40266a9d41 147 }
nickludlam 0:4e40266a9d41 148
nickludlam 0:4e40266a9d41 149 counter++; // Increment our counter each time we loop around
nickludlam 0:4e40266a9d41 150
nickludlam 0:4e40266a9d41 151 // A simple delay to rate limit what we send up to the cloud
nickludlam 0:4e40266a9d41 152 wait_ms(5000);
nickludlam 0:4e40266a9d41 153 }
nickludlam 0:4e40266a9d41 154
nickludlam 0:4e40266a9d41 155 void handleSetCounter(BERGCloudMessage &command) {
nickludlam 0:4e40266a9d41 156 string prefixText;
nickludlam 0:4e40266a9d41 157 int32_t newCounterVal;
nickludlam 0:4e40266a9d41 158 stringstream counterText;
nickludlam 0:4e40266a9d41 159
nickludlam 0:4e40266a9d41 160 prefixText = "Counter set to";
nickludlam 0:4e40266a9d41 161
nickludlam 0:4e40266a9d41 162 // We're expecting an integer value for the counter
nickludlam 0:4e40266a9d41 163 if (command.unpack(newCounterVal)) {
nickludlam 0:4e40266a9d41 164
nickludlam 0:4e40266a9d41 165 printf("Decoded newCounterVal as: %i\r\n", newCounterVal);
nickludlam 0:4e40266a9d41 166
nickludlam 0:4e40266a9d41 167 // Set the global to our new value
nickludlam 0:4e40266a9d41 168 counter = newCounterVal;
nickludlam 0:4e40266a9d41 169
nickludlam 0:4e40266a9d41 170 // Convert to string (see std::stringstream)
nickludlam 0:4e40266a9d41 171 counterText << newCounterVal;
nickludlam 0:4e40266a9d41 172
nickludlam 0:4e40266a9d41 173 // Show the string on the OLED screen with display()
nickludlam 0:4e40266a9d41 174 BERGCloud.clearDisplay();
nickludlam 0:4e40266a9d41 175
nickludlam 0:4e40266a9d41 176 // Print in reverse order
nickludlam 0:4e40266a9d41 177 BERGCloud.display(counterText.str().c_str());
nickludlam 0:4e40266a9d41 178 BERGCloud.display(prefixText.c_str());
nickludlam 0:4e40266a9d41 179 } else {
nickludlam 0:4e40266a9d41 180 printf("WARNING: unpacking the new counter value failed\r\n");
nickludlam 0:4e40266a9d41 181 }
nickludlam 0:4e40266a9d41 182 }
nickludlam 0:4e40266a9d41 183
nickludlam 0:4e40266a9d41 184 void handleGreet(BERGCloudMessage &command) {
nickludlam 0:4e40266a9d41 185 string prefixText, suffixText, finalText;
nickludlam 0:4e40266a9d41 186 int32_t number;
nickludlam 0:4e40266a9d41 187
nickludlam 0:4e40266a9d41 188 prefixText = "Hello, ";
nickludlam 0:4e40266a9d41 189
nickludlam 0:4e40266a9d41 190 // We're expecting a string and a number for display-text, so
nickludlam 0:4e40266a9d41 191 // we attempt to decode these types in turn
nickludlam 0:4e40266a9d41 192
nickludlam 0:4e40266a9d41 193 if (command.unpack(suffixText)) {
nickludlam 0:4e40266a9d41 194 printf("Decoded text: '%s'\r\n", suffixText.c_str());
nickludlam 0:4e40266a9d41 195
nickludlam 0:4e40266a9d41 196 // Concatenate our strings
nickludlam 0:4e40266a9d41 197 finalText = prefixText + suffixText;
nickludlam 0:4e40266a9d41 198
nickludlam 0:4e40266a9d41 199 // Show the string on the OLED screen with display()
nickludlam 0:4e40266a9d41 200 BERGCloud.clearDisplay();
nickludlam 0:4e40266a9d41 201 BERGCloud.display(finalText.c_str());
nickludlam 0:4e40266a9d41 202 } else {
nickludlam 0:4e40266a9d41 203 printf("WARNING: unpacking text failed\r\n");
nickludlam 0:4e40266a9d41 204 }
nickludlam 0:4e40266a9d41 205
nickludlam 0:4e40266a9d41 206 // For this command, we can optionally be passed an integer
nickludlam 0:4e40266a9d41 207 // and we log this out on the serial console.
nickludlam 0:4e40266a9d41 208 //
nickludlam 0:4e40266a9d41 209 // This is to demonstrate serializing multiple values within
nickludlam 0:4e40266a9d41 210 // one command.
nickludlam 0:4e40266a9d41 211
nickludlam 0:4e40266a9d41 212 if (command.unpack(number)) {
nickludlam 0:4e40266a9d41 213 printf("Decoded number: %i\r\n", number);
nickludlam 0:4e40266a9d41 214 } else {
nickludlam 0:4e40266a9d41 215 printf("No additional number given\r\n");
nickludlam 0:4e40266a9d41 216 }
nickludlam 0:4e40266a9d41 217 }