[sigrok-dumps.git] / spi / ade7758 / README

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Analog Devices ADE7758
-------------------------------------------------------------------------------

This is a set of example captures of ADE7758 SPI communications.

Note that Chip Select is _optional_ on this device, provided that you are
careful to only use valid, full length SPI read/write requests.

Details:
http://www.analog.com/en/products/analog-to-digital-converters/integrated-special-purpose-converters/energy-metering-ics/ade7758.html


Logic analyzer setup
--------------------

The logic analyzer used was a Saleae Logic16 clone (at 50MHz):

  Probe       ADE7758 pin
  -----------------------
  0           CLK
  1           MISO
  2           MOSI
  3           IRQ


Data
----

In this case, the chip is configured to provide interrupts on voltage zero
crossings, and the host MCU is reading the status register, and then the
appropriate (phase B) voltage/current registers.

It is largely an example of SPI without CS, in SPI mode 0,1.

Correct decodings with the ADE7758 decoder should show:

  RSTATUS: 0x400
  FREQ: 0x0 (frequency is from phase A, not connected on this device)
  BVRMS: 0x10cd0c (context) or 0x10ccfa (nocontext)
  BIRMS: 0x2ac    (context) or 0x2a8    (nocontext)


ade7758-phaseB-zx-irq-context.sr
--------------------------------

Trigger with precapture on the IRQ pin falling edge.


ade7758-phaseB-zx-irq-nocontext.sr
----------------------------------

Trigger on SPI CLK rising edge.
Commit	Line	Data
cefb8a22 UH	1	-------------------------------------------------------------------------------
	2	Analog Devices ADE7758
	3	-------------------------------------------------------------------------------
	4
	5	This is a set of example captures of ADE7758 SPI communications.
	6
047542b9	7	Note that Chip Select is _optional_ on this device, provided that you are
cefb8a22 UH	8	careful to only use valid, full length SPI read/write requests.
	9
	10	Details:
	11	http://www.analog.com/en/products/analog-to-digital-converters/integrated-special-purpose-converters/energy-metering-ics/ade7758.html
	12
	13
	14	Logic analyzer setup
	15	--------------------
	16
	17	The logic analyzer used was a Saleae Logic16 clone (at 50MHz):
	18
	19	Probe ADE7758 pin
	20	-----------------------
	21	0 CLK
	22	1 MISO
	23	2 MOSI
	24	3 IRQ
	25
	26
	27	Data
	28	----
047542b9 KP	29
	30	In this case, the chip is configured to provide interrupts on voltage zero
	31	crossings, and the host MCU is reading the status register, and then the
	32	appropriate (phase B) voltage/current registers.
	33
cefb8a22 UH	34	It is largely an example of SPI without CS, in SPI mode 0,1.
	35
	36	Correct decodings with the ADE7758 decoder should show:
	37
	38	RSTATUS: 0x400
	39	FREQ: 0x0 (frequency is from phase A, not connected on this device)
	40	BVRMS: 0x10cd0c (context) or 0x10ccfa (nocontext)
	41	BIRMS: 0x2ac (context) or 0x2a8 (nocontext)
	42
	43
	44	ade7758-phaseB-zx-irq-context.sr
	45	--------------------------------
	46
	47	Trigger with precapture on the IRQ pin falling edge.
	48
047542b9	49
cefb8a22 UH	50	ade7758-phaseB-zx-irq-nocontext.sr
cefb8a22 UH	51	----------------------------------
047542b9	52
cefb8a22	53	Trigger on SPI CLK rising edge.
047542b9	54