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application: add DS18B20 temperature sensor

This commit is contained in:
King Kévin 2020-12-11 20:59:39 +01:00
parent 2976f59622
commit 05ad975fe7
1 changed files with 17 additions and 0 deletions
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17
application.c
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@ -33,6 +33,7 @@
#include "terminal.h" // handle the terminal interface
#include "menu.h" // menu utilities
#include "sensor_sr04.h" // range measurement utilities
#include "sensor_ds18b20.h" // 1-Wire temperature sensor utilities
/** watchdog period in ms */
#define WATCHDOG_PERIOD 10000
@ -433,6 +434,17 @@ void main(void)
sensor_sr04_setup(); // setup peripheral
puts("OK\n");
puts("setup DS18B20 temperature sensor: ");
sensor_ds18b20_setup(); // setup peripheral
const bool sensor_ds18b20_present = (1 == sensor_ds18b20_number() && sensor_ds18b20_only()); // ensure there is only one ds18b20 sensor on the bus (so we don't have to use its ROM code)
if (sensor_ds18b20_present) {
sensor_ds18b20_precision(0, 12); // use highest resolution. it requires 750 ms to do the conversion, but we only check once a second
sensor_ds18b20_convert(0); // start the conversion
puts("OK\n");
} else {
puts("KO\n");
}
// setup terminal
terminal_prefix = ""; // set default prefix
terminal_process = &process_command; // set central function to process commands
@ -465,6 +477,11 @@ void main(void)
action = true; // action will be performed
led_toggle(); // toggle LED to indicate if main function is stuck
sensor_sr04_trigger(); // start measurement
const float heater_temp = sensor_ds18b20_temperature(0); // get temperature
if (85.0 != heater_temp) { // the conversion has not been completed
sensor_ds18b20_convert(0); // start next conversion
printf("heater temperature: %.01f °C\n", heater_temp);
}
}
if (sensor_sr04_distance) { // distance measurement is available
printf("%u\n", sensor_sr04_distance); // start measurement