Switch to using calloc on all calls to malloc where the memory isn't
initialized. For things like the mraa_board_t, not allocating all to zero
causes issues such as with the sub_platform member, where if that's not zero
mraa_get_platform_type will try to dereference a random memory location for the
sub_platform->platform_name, which can result in segmentation faults and other
issues.
Note that in some places where immediately after the malloc call is a copy
operation, there is no need for calloc, as all the memory gets overwritten
anyways, but in cases where there may or may not be memory written to (such as
in mraa_file_contains, with reading from a file), even though in most cases the
memory is overwritten, it could be the case that the read operation does
nothing, but the memory still has non-zero values, by virtue of the fact it
wasn't overwritten.
Signed-off-by: Ian Johnson <ijohnson@wolfram.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
E.g. on Edison they have LFs and that may cause problems
with downstream consumers of this data.
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
We now take into account only "iio:device*" files to filter out
fake devices like triggers.
Closes#299.
Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This means that a valid platform is no longer required for iio operations and
therefore this is now only a req for using USBPLAT
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Code crept in from ft4222 branch merge and is superflous becuase of the new
advance function structure
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
scale and other attributes have to be read individually as they vary quite alot
depending on the channel. We only care/take data from scan_elements
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit creates a new structure inside each _iio device when used and can
then be used to understand the data being read after a trigger is run/executed
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Now platform_type is no longer global it tracks with board instance
so that platform and sub-platform can report different types.
Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This also means arm subplatforms can work and removes a plat == NULL check
which will never be true if -DUSBPLAT=ON
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Add two new API to get the usable I2C bus count and related I2C adapter number
Signed-off-by: Yong Li <yong.b.li@intel.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
All files in sysfs are 4K minimum so allocate a 4k buffer to hold the result -
even if it'll never be that big
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
If platform is not initalised at this stage then there is no need to attempt
again
Signed-off-by: Michael Ring <mail@michael-ring.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
