Problems on having programmed arduino

[Francisco Cabrera]

Hello my name is frank, I am electronic and live in canary island, I have a doubt on having programmed arduino 1 R3,
If in program I put one temporizador for 1 second .... when worked in the arduino not late one second, he late 7 seconds .. I not understand it ....Can help me please?

[kersing]

Please post your flow chart so we can take a look at it if you need help with your program. (Use the 'Upload attachment' TAB just below the 'Save' button)

[MJU]

What are the clock settings in your project?
The 7 seconds, is that when you run your program on the Arduino or when you simulate it in Flowcode?

In "build", "project options" what is the clock frequency?
The Arduino you mention should be set to 16Mhz.

Otherwise post your project here so others can investigate it.

[Francisco Cabrera]

Flowcode does not give option to change anything into the configuration of the clock .... I leave capture of screen, In flowcode the this simulation well

[LeighM]

That sounds like the CKDIV8 (Divide clock by 8 ) Fuse bit is programmed.
Can you give more details about what you are doing, such as, are you using the Arduino Bootloader, or ICSP socket?

[Francisco Cabrera]

I generate the hex, and later I programme it with the programmer minipro tl866, Because I cannot programme it from the flowcode,

[LeighM]

Hi,

That shows that the "Fuse Low Byte" is 0x62, hence bit 7 the CKDIV8 is 0 (programmed) causing the divide clock by 8.
You might need to check other bits too, concerning which clock is used. Have a look at "Fuse Bits" in the AVR datasheet.

Hope that helps you.
Leigh

[Francisco Cabrera]

Yes you have reason. Please can you help my? .. have I that to remove the selection of ckdiv=0?

[LeighM]

For full speed you need:

[no tick] CKDIV8=1

For 16Mhz crystal you need:

[tick] CKSEL3=0
[no tick] CKSEL2=1
[no tick] CKSEL1=1
[tick] CKSEL0=0

[Francisco Cabrera]

Friend leighM, thank you very much for your help, I live in canary island, here thousands of english family come to the year of vacations, if some day your you want to come here, do not forget to warn me, I will be your tourist guide free .... regards.