main.cpp

00001 #include "mbed.h"
00002 #include "MSS.h"
00003 #include "BME280.h"
00004 
00005 #define SPI_IF 1
00006 #define I2C_IF 2
00007 
00008 #define BME280_I2C_ADDRESS 0x76
00009 
00010 DigitalOut csb(PIN_CS0, 1) ;
00011 
00012 int main() {
00013     float temp, hum, pres ;
00014     BME280 *bme280 = 0 ;
00015     int used_if = I2C_IF ; /* SPI_IF for SPI */
00016     
00017     if (used_if == I2C_IF) {
00018         bme280 = new BME280(PIN_SDA, PIN_SCL, BME280_I2C_ADDRESS) ;
00019     } else if (used_if == SPI_IF) {
00020         bme280 = new BME280(PIN_SCK, PIN_MISO, PIN_MOSI, PIN_CS0) ;
00021     } else {
00022         printf("Unsupported IF for BME280 [%d]\n", used_if) ;
00023         exit(EXIT_FAILURE) ;
00024     }
00025 
00026     bme280->reset() ;
00027     wait(2) ;
00028     bme280->init() ;
00029     wait(1) ;
00030     printf("\n=== test BME280 for %s (%s) ===\n", BOARD_NAME, __DATE__) ;
00031     if (used_if == I2C_IF) {
00032         printf("IF = I2C, ") ;
00033     } else if (used_if == SPI_IF) {
00034         printf("IF = SPI, ") ;
00035     }
00036     printf("ID = 0x%02X (0x60 expected for BME280)\n", bme280->getID()) ;
00037     
00038     printf("Temperature(C) , Humidity(%%), Pressure(hPa)\n") ;
00039     while(1) {
00040         bme280->trigger() ;
00041         while(bme280->busy()) {
00042             wait(0.1) ;
00043         }
00044         temp = bme280->getTemperature() ;
00045         hum = bme280->getHumidity() ;
00046         pres = bme280->getPressure() ;
00047         printf("%.2f, %.2f, %.2f\n", temp, hum, pres) ;
00048         wait(2) ;
00049     }
00050 }