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38 lines
992 B
C
38 lines
992 B
C
/* ds18b20main.c -- sample temperature using 1-Wire temperature sensor */
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/* Copyright (c) 2020 Renaud Fivet */
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#include <stdio.h>
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#include "system.h" /* uptime */
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#include "ds18b20.h" /* ds18b20_() */
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int main( void) {
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unsigned last = 0 ;
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ds18b20_init() ;
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ds18b20_resolution( 12) ; /* Set highest resolution: 12 bits */
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ds18b20_convert() ; /* start temperature conversion */
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for( ;;)
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if( last == uptime)
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yield() ;
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else {
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short val ;
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last = uptime ;
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switch( ds18b20_fetch( &val)) {
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case DS18B20_SUCCESS:
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printf( "%i.%i\n", val / 10, val % 10) ;
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break ;
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case DS18B20_FAIL_TOUT:
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puts( "Timeout") ;
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break ;
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case DS18B20_FAIL_CRC:
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puts( "CRC Error") ;
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}
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ds18b20_convert() ; /* start temperature conversion */
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}
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}
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/* end of ds18b20main.c */
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