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Commit e8d0927a authored by Tiberiu Breana's avatar Tiberiu Breana Committed by Jonathan Cameron
Browse files

tools: iio: Add single-byte case for generic_buffer 



Some sensors export data in an 8-bit format.
Add a single-byte case for the generic_buffer tool so that
these sensors' buffer data can be visualized.

Signed-off-by: default avatarTiberiu Breana <tiberiu.a.breana@intel.com>
Reviewed-by: default avatarHartmut Knaack <knaack.h@gmx.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 12ebb052

tools/iio/generic_buffer.c

+21 −0
Original line number Diff line number Diff line
@@ -61,6 +61,23 @@ int size_from_channelarray(struct iio_channel_info *channels, int num_channels) 
	return bytes;

}



void print1byte(uint8_t input, struct iio_channel_info *info)

{

	/*

	 * Shift before conversion to avoid sign extension

	 * of left aligned data

	 */

	input >>= info->shift;

	input &= info->mask;

	if (info->is_signed) {

		int8_t val = (int8_t)(input << (8 - info->bits_used)) >>

			     (8 - info->bits_used);

		printf("%05f ", ((float)val + info->offset) * info->scale);

	} else {

		printf("%05f ", ((float)input + info->offset) * info->scale);

	}

}



void print2byte(uint16_t input, struct iio_channel_info *info)

{

	/* First swap if incorrect endian */
@@ -152,6 +169,10 @@ void process_scan(char *data, 
	for (k = 0; k < num_channels; k++)

		switch (channels[k].bytes) {

			/* only a few cases implemented so far */

		case 1:

			print1byte(*(uint8_t *)(data + channels[k].location),

				   &channels[k]);

			break;

		case 2:

			print2byte(*(uint16_t *)(data + channels[k].location),

				   &channels[k]);