Schaltplan angeschlossener Temperatursensoren
Schaltplan angeschlossener Temperatursensoren
Die Bibliothek muß intern mit den folgenden Parametern übersetzt werden. Dies kann durch Benutzung der originalen Boardkonfiguration über --enable-board=avrctrl-8535-8mhz erreicht werden:
AVRHAL_LIB_OW_PORT="PORTD"AVRHAL_LIB_OW_PORT_DDR="DDRD"AVRHAL_LIB_OW_PORT_IN="PIND"AVRHAL_LIB_OW_DQBIT="4"
#include <avrhal/delay.h>
#include <avrhal/lcd.h>
#include <avrhal/ow.h>
#include <avrhal/ds1820.h>
ow_devices[] auch ein genügend großes Feld vom Typ unsigned char und nicht ow_device_st angelegt sowie w1_init() und w1_search() benutzt: int main(void) { unsigned char ow_devices[2 * 9]; unsigned char devices; lcd_init((2 /* rows */ << 6) + 16 /* columns */); lcd_putstr("--= AVR-Ctrl =--"); lcd_putstr("T"); lcd_control(1, 0, 0); // cursor block off w1_init(); // NO ERROR HANDLING !!! devices = w1_search(0xf0, ow_devices); // NO ERROR HANDLING !!! while (1) { uint8_t dev; for (dev = 0; dev < devices; dev++) { int temp = ds1820_temperature_10(&(ow_devices[dev * 9])); lcd_gotoxy(1,1); lcd_printf("%d = %d.%c %cC", dev + 1, temp / 10, temp % 10 + 0x30, 0xdf); delay_ms(2000); } } } /* main() */ /*************************************EndOfFile*************************** $Id: $ vim:tw=78:ts=4:sw=4:ai: */
doc/examples/ds1820 entnommen werden.ow_devices[] übereinstimmen. In unserem Beispiel: unsigned char ow_devices[2 * 9];
[avr@host] > avr-gcc -g -O2 -Wall -Wstrict-prototypes -Wa \
-mmcu=at90s8535 -DAVRHAL_CONFIG_avrctrl_8535_8mhz \
-c -o main.o main.c
[avr@host] > avr-gcc -Wl,-Map=ds1820.map,--cref -mmcu=at90s8535 \
-o ds1820.out main.o -lavrhal-avrctrl-8535-8mhz
[avr@host] > avr-objcopy -O binary -R .eeprom ds1820.out ds1820.out-rom.bin
[avr@host] > avr-objcopy -O ihex -R .eeprom ds1820.out ds1820.out-rom.hex
[avr@host] > avr-objcopy -O srec -R .eeprom ds1820.out ds1820.out-rom.s19
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[avr@host] > avr-objdump -x ds1820.out > ds1820.inf
[avr@host] > avr-size -d ds1820.out > ds1820.siz
[avr@host] > avr-size -x ds1820.out >> ds1820.siz
text data bss dec hex filename 2776 56 10 2842 b1a ds1820.out text data bss dec hex filename 0xad8 0x38 0xa 2842 b1a ds1820.out