Hi , I have problems with interfacing DS1820 to LPC2368. i can see only "127" on display. Thnks.
Did you post in the wrong thread?
You can't choose the communication frequency for the DS1820. You can choose how long to pause between each bit (infinity is ok as long as the device stays powered), but the bit timing for the communication is dictated by the datasheet. It isn't like I2C where you configure a baudrate, and then clock the data synchronously.
i use c language.
Here are the frequencies :
/* Clock Definitions */ #define Fosc 12000000 /* System frequence,should be less than 80MHz. */ #define Fcclk 57600000 #define Fcco 288000000
i testes several pauses , but at all of them there is no different result.