GSOE Belueftung DS18B20
Dependencies: LCD_i2c_GSOE DS1820
Revision 4:d263a2860484, committed 2019-01-20
- Comitter:
- hudakz
- Date:
- Sun Jan 20 10:13:38 2019 +0000
- Parent:
- 3:eb195375cde7
- Child:
- 5:4f7330bb1b64
- Commit message:
- Updated.
Changed in this revision
--- a/DS1820.lib Fri Mar 27 12:37:34 2015 +0000 +++ b/DS1820.lib Sun Jan 20 10:13:38 2019 +0000 @@ -1,1 +1,1 @@ -http://developer.mbed.org/users/hudakz/code/DS1820/#8dfdd1603e4d +http://developer.mbed.org/users/hudakz/code/DS1820/#b02fa18b294a
--- a/main.cpp Fri Mar 27 12:37:34 2015 +0000 +++ b/main.cpp Sun Jan 20 10:13:38 2019 +0000 @@ -9,25 +9,36 @@ #include "mbed.h" #include "DS1820.h" -Serial serial(USBTX, USBRX); +Serial pc(USBTX, USBRX); +DigitalOut led(LED1); +DS1820 ds1820(p8); // substitute p8 with actual mbed pin name connected to the DS1820 data pin +float temp = 0; +int result = 0; int main() { - DS1820 ds1820(PA_9); // substitute PA_9 with actual mbed pin name connected to the DS1820 data pin if(ds1820.begin()) { - ds1820.startConversion(); // start temperature conversion - wait(1.0); // let DS1820 complete the temperature conversion while(1) { - serial.printf("temp = %3.1f\r\n", ds1820.read()); // read temperature - ds1820.startConversion(); // start temperature conversion - wait(1.0); // let DS1820 complete the temperature conversion + ds1820.startConversion(); // start temperature conversion from analog to digital + wait(1.0); // let DS1820 complete the temperature conversion + result = ds1820.read(temp); // read temperature from DS1820 and perform cyclic redundancy check (CRC) + switch(result) { + case 0: // no errors -> 'temp' contains the value of measured temperature + pc.printf("temp = %3.1f%cC\r\n", temp, 176); + break; + case 1: // no sensor present -> 'temp' is not updated + pc.printf("no sensor present\n\r"); + break; + case 2: // CRC error -> 'temp' is not updated + pc.printf("CRC error\r\n"); + } + led = !led; } } else - serial.printf("No DS1820 sensor found!\r\n"); + pc.printf("No DS1820 sensor found!\r\n"); } - -// You can create an array of sensors: +// Array of sensors: //int main() { // DS1820 ds1820[3] = {DS1820(PA_8), DS1820(PA_9), DS1820(PC_7)};
--- a/mbed.bld Fri Mar 27 12:37:34 2015 +0000 +++ b/mbed.bld Sun Jan 20 10:13:38 2019 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/7e07b6fb45cf \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/4336505e4b1c \ No newline at end of file