how to debug writing registers in ade 7753

[charlyking]

HI ALL

I have a project using ADE7753.
Right now I am trying to write the registers inside ADE7753 with atmega168 microprocessor.
I modified some SPI code online and I do use oscilloscope to check the write and read sequence.
But the strange thing is that all the signal sequence looks fine.
I could read default value inside. The reading immediately after the write is fine but it I read the same address again, then it came out to the default value.

I am not sure if the writing is completely successful.
How could I debug the circuit and make sure the registers have been fully and successfully modified.

Thanks!

 

[bobcat1]

Hi

Find a register who can be READ from and write to and write & read the 0x55 and 0xAA value when you write & read is OK (verified) it can be say that communication is OK

All the best

Bobi

The microcontroller specialist

 

[charlyking]

actually I found my problem.
The reset pin should not be floated.

However, currently I am working on the calibration.
the AENERGY and RAENERGY registers I have read are quite small, only in 0x0189~ 0x489

here is my current setting:
0x09, 2, 0x00, 0x81, 0x03, // Mode,
0x0A, 2, 0x00, 0x40, 0x03, // Interrupt enable register,
0x0F, 1, 0x00, 0x00, 0x03, // PGA Gain 0 for 0.5V,
0x10, 1, 0x00, 0x0D, 0x03, // PHCAL, phase calibration register
0x11, 2, 0x00, 0x00, 0x03, // APOS, active power offset correstion
//
0x12, 2, 0x00, 0xFF, 0x03, // WGAIN, Power Gain, output = Active Power * (1 + WGAIN/2^12).
// 0x7FF up by 50%, 0x0800 scale by -50%
0x13, 1, 0x00, 0x00, 0x03, // WDIV, Active energy divider, 8-bit unsigned
0x14, 2, 0x00, 0x00, 0x03, // CFNUM, CF Divider numberator
0x15, 2, 0x00, 0x10, 0x03, // CFDEN, CF Divider denominator CFDEN Lower den, higher freq.
0x1C, 2, 0x00, 0xFF, 0x03, // LINECYC, Line cycle energy accumulation mode

how to use the half line cycle registers?

Thanks!