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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| en:iot:examples:oled [2018/05/21 08:16] – Somepub | en:iot:examples:oled [Unknown date] (current) – external edit (Unknown date) 127.0.0.1 | ||
|---|---|---|---|
| Line 7: | Line 7: | ||
| Needed libraries: | Needed libraries: | ||
| - | < | + | < |
| The example code above shows counter value on screen | The example code above shows counter value on screen | ||
| <code c> | <code c> | ||
| - | |||
| #include < | #include < | ||
| #include < | #include < | ||
| #include < | #include < | ||
| #include < | #include < | ||
| - | #include <SPI.h> | + | #include <Adafruit_I2CDevice.h> |
| - | #include <Wire.h> | + | |
| #include < | #include < | ||
| #include < | #include < | ||
| + | #define WIFI_NAME " | ||
| + | #define WIFI_PASSWORD " | ||
| + | |||
| + | // OLED reset pin is GPIO0 | ||
| #define OLED_RESET 0 // GPIO0 | #define OLED_RESET 0 // GPIO0 | ||
| Ticker timeTicker; | Ticker timeTicker; | ||
| - | Adafruit_SSD1306 display(OLED_RESET); | + | Adafruit_SSD1306 display(OLED_RESET); |
| - | // ITT splashs screen bitmap. Generator: http:// | + | bool isBootModeNormal; |
| + | bool sendDataFlag; | ||
| + | |||
| + | int i = 0; // Counter variable is defined | ||
| + | |||
| + | // ITT splashs screen bitmap. Generator | ||
| static const unsigned char PROGMEM logo16_glcd_bmp[] = | static const unsigned char PROGMEM logo16_glcd_bmp[] = | ||
| { | { | ||
| Line 55: | Line 62: | ||
| 0x00, 0x00, 0x00, 0x00, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | 0x00, 0x00, 0x00, 0x00, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | ||
| }; | }; | ||
| - | |||
| - | #if (SSD1306_LCDHEIGHT != 48) | ||
| - | # | ||
| - | #endif | ||
| - | |||
| - | bool isBootModeNormal; | ||
| - | bool sendDataFlag; | ||
| - | |||
| - | int i = 0; | ||
| // Ticker library callback, which will occur 0.5 second interval. | // Ticker library callback, which will occur 0.5 second interval. | ||
| Line 69: | Line 67: | ||
| { | { | ||
| sendDataFlag=true; | sendDataFlag=true; | ||
| + | } | ||
| + | |||
| + | // If message received print it out. | ||
| + | void iot_received(String topic, String msg) | ||
| + | { | ||
| + | Serial.print(" | ||
| + | Serial.print(topic); | ||
| + | Serial.print(" | ||
| + | Serial.println(msg); | ||
| } | } | ||
| Line 81: | Line 88: | ||
| void setup() | void setup() | ||
| { | { | ||
| - | Serial.begin(115200); | + | Serial.begin(115200); |
| Serial.println(" | Serial.println(" | ||
| Line 87: | Line 94: | ||
| display.begin(SSD1306_SWITCHCAPVCC, | display.begin(SSD1306_SWITCHCAPVCC, | ||
| - | // Since the buffer is intialized | + | // Since the buffer is initialized |
| // internally, we should clear it | // internally, we should clear it | ||
| display.clearDisplay(); | display.clearDisplay(); | ||
| Line 98: | Line 105: | ||
| // Display splashscreen two second | // Display splashscreen two second | ||
| delay(2000); | delay(2000); | ||
| + | |||
| + | // | ||
| + | // | ||
| // print IoT json config to serial | // print IoT json config to serial | ||
| Line 109: | Line 119: | ||
| } | } | ||
| + | // Main code, which runs in loop | ||
| void loop() | void loop() | ||
| { | { | ||
| Line 114: | Line 125: | ||
| iot.handle(); | iot.handle(); | ||
| - | // Increase counter value | + | // Increase counter value by 1 |
| i++; | i++; | ||
| - | // Display counter value and boot mode on the OLED screen | + | // Display counter value on the OLED screen |
| - | display.clearDisplay(); | + | display.clearDisplay(); |
| - | display.setTextSize(1); | + | display.setTextSize(1); |
| - | display.setTextColor(WHITE); | + | display.setTextColor(WHITE); |
| - | display.setCursor(0, | + | display.setCursor(0, |
| - | display.println(" | + | display.println(" |
| - | display.println(i); | + | display.println(i); |
| - | + | display.display(); | |
| - | display.setCursor(0, | + | |
| - | + | ||
| - | if(isBootModeNormal) | + | |
| - | { | + | |
| - | display.println(" | + | |
| - | } | + | |
| - | else | + | |
| - | { | + | |
| - | display.println(" | + | |
| - | } | + | |
| - | + | ||
| - | display.display(); | + | |
| - | // Send counter value to the server | + | // Send counter value to the computer |
| if(WiFi.isConnected() && isBootModeNormal) | if(WiFi.isConnected() && isBootModeNormal) | ||
| { | { | ||
| Line 149: | Line 148: | ||
| } | } | ||
| } | } | ||
| + | |||
| + | delay(500); // delay of 0.5s, to change the counter value slowly | ||
| } | } | ||
| - | |||
| </ | </ | ||
