main.cpp

00001 #include "mbed.h"
00002 #include "stm32746g_discovery_lcd.h"
00003 #include "DS1820.h"
00004 
00005 #define     MAX_SENSOSRS   1 
00006 
00007 Thread thread;
00008 volatile float       temp = 0;
00009  
00010 void oneWireThread() {
00011     DS1820*     ds1820[MAX_SENSOSRS];
00012     DigitalOut  led(LED1);
00013     OneWire     oneWire(D8); 
00014     int         sensorsFound = 0;
00015     
00016     printf("OneWireThread Starting...\n");
00017 
00018     for (sensorsFound = 0; sensorsFound < MAX_SENSOSRS; sensorsFound++) {
00019         ds1820[sensorsFound] = new DS1820(&oneWire);
00020         if (!ds1820[sensorsFound]->begin()) {
00021             delete ds1820[sensorsFound];
00022             break;
00023         }
00024     }
00025  
00026     if(sensorsFound != 0) {
00027         printf("Found %d DS1820 sensors.\n", sensorsFound);
00028         while (1) {
00029             printf("----------------\r\n");
00030             for (int i = 0; i < sensorsFound; i++)
00031                 ds1820[i]->startConversion();       // start temperature conversion from analog to digital
00032             ThisThread::sleep_for(1000);                         // let DS1820 sensors complete the temperature conversion
00033             for (int i = 0; i < sensorsFound; i++) {
00034                 if (ds1820[i]->isPresent())
00035                     temp = ds1820[i]->read();
00036                     printf("temp[%d] = %3.1f%cC\r\n", i, temp, 176); // read temperature
00037             }
00038             ThisThread::sleep_for(5000);  
00039         }
00040     }else{
00041         printf("No DS1820 sensor found!\r\n");        
00042     }
00043 }
00044 
00045 int main()
00046 {
00047     printf("Starting\n");
00048     thread.start(oneWireThread);
00049     char buffer[20]= {0};
00050     HAL_Delay(500);
00051     BSP_LCD_Init();
00052     BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FB_START_ADDRESS);
00053     BSP_LCD_SelectLayer(LTDC_ACTIVE_LAYER);
00054     BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
00055     HAL_Delay(500);
00056 
00057     while(1){
00058         BSP_LCD_Clear(LCD_COLOR_BLACK);
00059         BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
00060         BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
00061         BSP_LCD_DisplayStringAt(0, 1, (uint8_t *)"MBED", CENTER_MODE);
00062         BSP_LCD_SetTextColor(LCD_COLOR_YELLOW);
00063         BSP_LCD_DisplayStringAt(0, 100, (uint8_t *)"DISCOVERY STM32F746NG", CENTER_MODE);
00064         sprintf (buffer, "temp = %3.1fC", temp);
00065         BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)buffer, LEFT_MODE);  
00066         HAL_Delay(2000);//ThisThread::sleep_for(1000);  //not working
00067         
00068     }  
00069 }