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Introduce three new RATP commands that allow getting and setting GPIO
values as well as configuring the direction of the GPIO pins.
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Introduce two new RATP commands that allow running i2c read/write
operations, very similar in format to the already existing md/mw
RATP commands.
The messages are defined with a fixed 16-bit long register field, but
it will only be treated as a 16-bit address if I2C_FLAG_WIDE_ADDRESS
is set in the message flags field. If this flag is unset, the start
register address is assumed 8-bit long.
If the message includes the I2C_FLAG_MASTER_MODE flag, the start
register field is ignored and a i2c master send/receive operation is
performed.
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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E.g.:
$ ./bbremote -v --port /dev/ttyUSB2 reset
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This commit introduces support for running the md and mw commands
using the binary interface provided by RATP. This allows clients to
read and write memory files without needing to do custom string
parsing on the data returned by the console 'md' and 'mw' operations.
The request and response messages used for these new operations are
structured in the same way:
* An initial fixed-sized section includes the fixed-sized
variables (e.g. integers), as well as the size and offset of the
variable-length variables.
* After the initial fixed-sized section, the buffer is given, which
contains the variable-length variables in the offsets previously
defined and with the size previously defined.
The message also defines separately the offset of the buffer
w.r.t. the start of the message. The endpoint reading the message will
use this information to decide where the buffer starts. This allows to
extend the message format in the future without needing to break the
message API, as new fields can be appended to the fixed-sized section
as long as the buffer offset is also updated to report the new
position of the buffer.
E.g.:
$ ./bbremote --port /dev/ttyUSB2 md /dev/pic_eeprom_rdu 0x107 5
0000000000
$ ./bbremote --port /dev/ttyUSB2 mw /dev/pic_eeprom_rdu 0x107 0102030405
5 bytes written
$ ./bbremote --port /dev/ttyUSB2 md /dev/pic_eeprom_rdu 0x107 5
0102030405
$ ./bbremote --port /dev/ttyUSB2 mw /dev/pic_eeprom_rdu 0x107 0000000000
5 bytes written
$ ./bbremote --port /dev/ttyUSB2 md /dev/pic_eeprom_rdu 0x107 5
0000000000
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Also, use xstrndup() instead of the custom xmemdup_add_zero() as we're
working with strings anyway.
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We are going to add new RATP command implementations in separate files
within this subdirectory.
Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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