diff options
Diffstat (limited to 'peripheral/libmraa/api/mraa/aio.h')
| -rw-r--r-- | peripheral/libmraa/api/mraa/aio.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/peripheral/libmraa/api/mraa/aio.h b/peripheral/libmraa/api/mraa/aio.h index 23c0857..753c907 100644 --- a/peripheral/libmraa/api/mraa/aio.h +++ b/peripheral/libmraa/api/mraa/aio.h @@ -59,20 +59,19 @@ typedef struct _aio* mraa_aio_context; mraa_aio_context mraa_aio_init(unsigned int pin); /** - * Read the input voltage. By default mraa will shift the raw value up or down - * to a 10 bit value. + * Read the input voltage. By default mraa will shift + * the raw value up or down to a 10 bit value. * * @param dev The AIO context - * @returns The current input voltage or -1 for error + * @returns The current input voltage. */ -int mraa_aio_read(mraa_aio_context dev); +unsigned int mraa_aio_read(mraa_aio_context dev); /** * Read the input voltage and return it as a normalized float (0.0f-1.0f). * * @param dev The AIO context - * @returns The current input voltage as a normalized float (0.0f-1.0f), error - * will be signaled by -1.0f + * @returns The current input voltage as a normalized float (0.0f-1.0f) */ float mraa_aio_read_float(mraa_aio_context dev); |