ADE7758 WFORM Register

wform

Hi
ADE 7758 has a WAVEFORM register for voltage or current or active power or reactive power or apparent power. The value is selected in WAVEMODE register.

But whatever I select in WAVEMODE, I get zero in WAVEFORM.

(The AIRMS and AVRMS work fine).
Another problem is AWATTHR. The values are undefined. I do read the register in 100 ms cycle and LCYCMODE ==0xC8, that means reset at reading.

I have any experience with ADE7758, can you give me a hint.
Best regards
Hans

I have your same Problem. I have made a test circuit.
to test the voltage I use a transformer from 220v~/9V~ and resistors 25k and 1k. However, when i read the waveform régister

Write1byte(0x15,0x04);//Write to ADE Wavemode register and I check it
//wavemode = 0x04 successfull
Read3byte(0x12);Read WFORM ,and the data read is 0x000000 ( so sad

Hi tranthudo

Thank you for sharing with me the same bad experience. Hopefully we will find somebody who has experience with ADE7758.

Best regards
Hans

@Hanskarl2000: So you can read AVRMS?. I haven't test to read AVRMS because i think if i can read wform, I can do well all other module.
I have uncomfortable about the way Analog present this ADE7758 datasheet.
Acording to this page : bit 2 - 4:WAVSEL (default value =0).
So I think bit in red area is the zero bit of WAVSEL[2]
and the 3rd bit of WAVMODE register? Is it right?



Added after 51 minutes:

I have just tested to read AVRMS and it's successfull. Thanks

When i did read o wform whithout a interrupt of ADE7758, i did read 0x00.
I can read only when the interrupt WFSM happen.

#define WAVMODE 0x15
#define PHSEL_FA 0x00
#define DTRT_3kSPS 0x60
#define WAVSEL_VAR_MO 0x0C
#define Fase 0x00

u8 temp = PHSEL_FA | Fase | WAVSEL_VAR_MO | DTRT_3kSPS;
MA_Write_Data( WAVMODE, &temp , 1);

/* Enable Int MSP430 */
__enable_interrupt();
/* Enable Int of ADE7758 */
Enable_Interrupts( WFSM );

/* Wait Int of WAVFORM */
while( !IsFlagIntStatus );
IsFlagIntStatus = RESET;

/* Read 3 bytes of ADE*/
PReactive = MA_Read_Data( WFORM, 3 );

Disable_Interrupts( WFSM );
__disable_interrupt();

thanks for attention.