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Thx for your research. I solved this problem. When I read hour, minute, and second data serially, It gave me wrong datas. after that I wrote separate routines to read these datas. Now, It gives me tru ...

Hi,

I tried to use your ds1340 driver. But when I read hour, minute and second, I always read hour=0x2D, minute=0x55, and second=0x55. what do you think about my problem ?

I am using ds134 ...

Thak you very much. I accomplished to run the HMC6352. When @PCM Programmer said that it is like EEPROM, I remembered that I wrote my EEPROM software.

But, in page 10 of HMC6352 datasheet said tha ...

when I send these commands;

I2C_START();
ack1=I2C_WRITE(0x43); // Read from HMC6352
ack2=I2C_WRITE(0x72); // Read from EEprom
ack3=I2C_WRITE(0 ...

Yes, I have. But I have 2 pieces 10k pull-up on SDA and SCL. I know that, 10K is needed for 100kHz communication and 1K is needed for 400kHz communication. am I right? What is your opinion about value ...

@PCM programmer,

I wrote a new software as you said. But it isn't working. When the program start, it gives NOACK, MSB=255 and LSB=255.

when write only this commands;
Start bit
Send 0x43 ...

I want to add something. When I send 0x43 command without force_HW, it gives to me ACK and I read MSB of heading=0 and LSB of heading=255.

I haven't got a oscillascope. So, I don't see my signals. ...

Hi,

I try to use my HMC6352 sensor with PIC16f687 and CCS. But I didn't accomplish to use it. When I send a first command, it gives to me ACK. But when I send next command or new command, it g ...