mirror of
https://github.com/rfivet/stm32bringup.git
synced 2024-12-18 06:46:23 -05:00
32 lines
834 B
C
32 lines
834 B
C
/* dht11main.c -- sample DHT11 sensor */
|
|
/* Copyright (c) 2020-2021 Renaud Fivet */
|
|
#include <stdio.h>
|
|
|
|
#include "system.h"
|
|
#include "dht11.h"
|
|
|
|
int main( void) {
|
|
static unsigned last ;
|
|
|
|
dht11_init() ;
|
|
for( ;;)
|
|
if( last == uptime)
|
|
yield() ;
|
|
else {
|
|
last = uptime ;
|
|
if( 2 == (last % 5)) /* every 5 seconds starting 2s after boot */
|
|
switch( dht11_read()) {
|
|
case DHT11_SUCCESS:
|
|
printf( "%u%%RH, %d.%uC\n", dht11_humid, dht11_tempc, dht11_tempf) ;
|
|
break ;
|
|
case DHT11_FAIL_TOUT:
|
|
puts( "Timeout") ;
|
|
break ;
|
|
case DHT11_FAIL_CKSUM:
|
|
puts( "Cksum error") ;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* end of dht11main.c */
|