[sigrok-dumps.git] / sdcard / spi_mode / write_single_block / README

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SD card / SPI-mode / CMD24 (write single block)
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This set of example captures demonstrates CMD24 (write single block)
commands including their data phase.

Pierre Poulain provided these files in bug #1365 as public domain.


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

  Probe    SD card
  ----------------
  0        CS#
  1        MOSI
  2        MISO
  3        CLK / SCK


Data
----

File data_transfer_start_snippet.sr was recorded in a live setup, and
contains the start of a write command -- but does not complete it which
is why the decoder won't annotate the operation.

File data_transfer_complete_simulated.sr contains a complete CMD24 start
as well as the communication of the R1 response, the data start token,
the payload data, and the data response. This capture was created by a
simulation.

File data_transfer_complete_real.sr is similar to the above, but is a
capture of a "real" transfer. The data (512 bytes) is all-zero, except for
the first 12 bytes which are ASCII "Sigrok rocks".
Commit	Line	Data
e528cbd4 GS	1	-------------------------------------------------------------------------------
	2	SD card / SPI-mode / CMD24 (write single block)
	3	-------------------------------------------------------------------------------
	4
	5	This set of example captures demonstrates CMD24 (write single block)
	6	commands including their data phase.
	7
	8	Pierre Poulain provided these files in bug #1365 as public domain.
	9
	10
	11	Logic analyzer setup
	12	--------------------
	13
	14	Probe SD card
	15	----------------
	16	0 CS#
	17	1 MOSI
	18	2 MISO
	19	3 CLK / SCK
	20
	21
	22	Data
	23	----
	24
	25	File data_transfer_start_snippet.sr was recorded in a live setup, and
	26	contains the start of a write command -- but does not complete it which
	27	is why the decoder won't annotate the operation.
	28
	29	File data_transfer_complete_simulated.sr contains a complete CMD24 start
	30	as well as the communication of the R1 response, the data start token,
	31	the payload data, and the data response. This capture was created by a
	32	simulation.
9b05e5de UH	33
	34	File data_transfer_complete_real.sr is similar to the above, but is a
	35	capture of a "real" transfer. The data (512 bytes) is all-zero, except for
	36	the first 12 bytes which are ASCII "Sigrok rocks".