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Hello dazz! Thank you very much for the answer. I tested the code on AVR atmega32... wdt_enable(WDTO_2S); This code works, very good :D ... Also code for the reset WD works... wdt_reset(); Thanks dazz again for the information. I have another question. I use procesr ATmega2560 (http://www.atmel.com/...

Hello!

Using ATmega2560 processor.
How to use a watchdog?

Enable watchdog Is that right?

Disable watchdog Is that right?

Reset watch dog Is that right?

I wonder whether the commands are correct for the watchdog?

Thanks for the reply.

Hello. It's me again :wink: . Compiled program for reading DHT11, but does not work. I used atmega32 and 10MHz Quartz. I changed the value of TCNT0 = 0xE0. Prescaler 1:64. The program is written in Flowcode4 DHT11 sensor is purchased http://www.ebay.com/itm/370691456827?ssPageName=STRK:MEWNX:IT&_trk...

Thank you very much. Very good explanation.

I understand now.

Good luck!

RR

Hello.

Sorry for the bad question.

I do not understand how to calculate the value TMR0 is 204.8 us.

204.8 us how to get this value?
Thanks.

RR

Hello Enamul. Thank you very much for the information. Very nicely explained. I understand: 1/20000000Hz = 0,00000005s = 0,05us. One cycle takes 0,05us. I do not understand: How to get value TMR0 is 204.8 us??? Can you explain that? I understand: 204.8/(0.05 * 64)=64..so 64 increment should cause ov...

Hello Enamul. Thank you very much for the optimization Flowcode4 AVR for DHT11. Sorry, but program does not work. Using DHT22 sensor. DHT11 works the same as DHT22. I think the problem in ATMEGA32. The maximum frequency is 16MHz for atmega32. On the atmega32 is necessary to reduce the frequency. Ena...

Hello. I used the attached file PIC_One_Wire.c. When translated into HEX code return error. Attach PIC_One_Wire.c C code from Flowcode4. Code works, but I can use only 1 x 1Wire pin. Beny, or you can check the attached code? Your attached code is not working correct. Benj, can you please stick also ...

Hello.

Thank you for answer.

I attach the program for DHT11 Flowcode4 for AVR ATMEGA32. It is necessary to set TMR0.
Please see, if everything is OK.

RR

Hello. Thanks for the information. I write code for AVR ATMEGA32. I have a problem with sharing frequency. I can not share the frequency 20MHz clock with 1:4. The figure below What should I do? One more question. My mistake, picture number 12 and 13 is OK. I have a question for Figure 10, calculatio...

Hello, Please have a little help.I have some questions. Picture 8 - function calculation can not see everything. Picture number 12 and 13 can not see everything. Picture 7, C code... is so OK st_bit(intcon, TMR0|E); tmr0=0x00; I would have to window variables. Thank you. rr

Thanks for answer.

The problem is Flowcode4 It allows only one component 1wire.

rr

If I DS18S20 the individual pin then you can skip address and reading code.
But flowcode but allows only one 1wire one pin.
Use the C code in the project, do not know how.

Any suggestions…

rr

Sorry for bad english
I understand that it can be 1wire pin connected more DS18S20.
But it's complicated for me. I would like to skip addressing
I would like to connect DS18S20 on each individual pin.
This connection is much more understand for me.

Any other a suggestion?

rr

Hello to everybody.

I'm new to the forum.
I have one question. It is possible to the microcontroller ATmega32 create 2 X 1Wire the pin PB0 and PB1?
How to define two input 1Wire?
To better understand the attach picture.

Thank you very much for the answer.

Radojko