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| author | Tiberiu Breana <tiberiu.a.breana@intel.com> | 2015-07-03 12:57:36 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-07-05 12:27:33 +0100 |
| commit | e8d0927a19f11cebc4381f5f0cac8fa37154b08a (patch) | |
| tree | fc886523ad9fa8c15674d3b24309cd686aa4b7ad /tools/iio | |
| parent | 12ebb05246338aa9cdee51da50f57237352b3f64 (diff) | |
| download | linux-e8d0927a19f11cebc4381f5f0cac8fa37154b08a.tar.bz2 | |
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: Tiberiu Breana <tiberiu.a.breana@intel.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'tools/iio')
| -rw-r--r-- | tools/iio/generic_buffer.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c index fc362d2ff983..0e737238ca74 100644 --- a/tools/iio/generic_buffer.c +++ b/tools/iio/generic_buffer.c @@ -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]); |