main.cpp

00001 #include "mbed.h"
00002 #include "HTU21D.h"
00003 #include "Hexi_OLED_SSD1351.h"
00004 #include "images.h"
00005 #include "string.h"
00006 
00007 // Pin connections
00008 DigitalOut led1(LED_GREEN); // RGB LED
00009 Serial pc(USBTX, USBRX); // Serial interface
00010 HTU21D temphumid(PTB1,PTB0); // HTU21D Sensor
00011 DigitalOut powerEN (PTB12); // Power Enable HTU21D Sensor
00012 SSD1351 oled(PTB22,PTB21,PTC13,PTB20,PTE6, PTD15); // SSD1351 OLED Driver (MOSI,SCLK,POWER,CS,RST,DC)
00013 
00014 // Variables
00015 int sample_ftemp;
00016 int sample_ctemp;
00017 int sample_ktemp;
00018 int sample_humid;
00019 const uint8_t *image1; // Pointer for the image to be displayed
00020 char text[20]; // Text Buffer for dynamic value displayed
00021 
00022 int main() {
00023     powerEN = 0;
00024     
00025     /* Setting pointer location of the 96 by 96 pixel bitmap */
00026     image1  = TempHumid;
00027 
00028     /* Turn on the backlight of the OLED Display */
00029     // oled.DimScreenON();
00030     
00031     /* Fill 96px by 96px Screen with 96px by 96px NXP Image starting at x=0,y=0 */
00032     oled.DrawImage(image1,0,0);  
00033     
00034     while(true) {
00035 
00036         sample_ftemp = temphumid.sample_ftemp();
00037         printf("Temperature: %d F\n\r", sample_ftemp);
00038 
00039         sample_ctemp = temphumid.sample_ctemp();
00040         printf("Temperature: %d C\n\r", sample_ctemp);
00041 
00042         sample_ktemp = temphumid.sample_ktemp();
00043         printf("Temperature: %d K\n\r", sample_ktemp);
00044 
00045         sample_humid = temphumid.sample_humid();
00046         printf("Humidity: %d %%\n\r", sample_humid);
00047         printf("\n\r");
00048         
00049         /* Get OLED Class Default Text Properties */
00050         oled_text_properties_t textProperties = {0};
00051         oled.GetTextProperties(&textProperties);
00052 
00053         /* Set text properties to white and right aligned for the dynamic text */
00054         textProperties.fontColor = COLOR_RED;
00055         textProperties.alignParam = OLED_TEXT_ALIGN_RIGHT;
00056         oled.SetTextProperties(&textProperties);  
00057       
00058         /* Display Legends */
00059         strcpy((char *) text,"Temp.");
00060         oled.Label((uint8_t *)text,5,67);      
00061       
00062         /* Format the value */
00063         sprintf(text,"%i",sample_ctemp);
00064         /* Display time reading in 35px by 15px textbox at(x=55, y=40) */
00065         oled.TextBox((uint8_t *)text,57,67,20,15); //Increase textbox for more digits
00066         
00067         /* Display Units */
00068         strcpy((char *) text,"dC");
00069         oled.Label((uint8_t *)text,82,67);     
00070       
00071         /* Set text properties to white and right aligned for the dynamic text */ 
00072         textProperties.fontColor = COLOR_BLUE;
00073         textProperties.alignParam = OLED_TEXT_ALIGN_RIGHT;
00074         oled.SetTextProperties(&textProperties);  
00075       
00076         /* Display Legends */
00077         strcpy((char *) text,"Humidity");
00078         oled.Label((uint8_t *)text,5,81);       
00079       
00080         /* Format the value */
00081         sprintf(text,"%i",sample_humid);
00082         /* Display time reading in 35px by 15px textbox at(x=55, y=40) */
00083         oled.TextBox((uint8_t *)text,57,81,20,15); //Increase textbox for more digits
00084         
00085         /* Display Units */
00086         strcpy((char *) text,"%");
00087         oled.Label((uint8_t *)text,82,81); 
00088         
00089         led1 = !led1;
00090         Thread::wait(500);
00091     }
00092 }