Raspberries/mraa
Private
Public Access
2
0
Fork 0
Code Activity

aio: Change mraa_aio_read to use int and return -1

Browse Source 
This commit changes also the _replace function and adds exceptions to the C++
API for errors in AIO read

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2016-04-22 11:57:18 +01:00
parent e961558fd2
commit 0b74aa68ab
5 changed files with 27 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
api/mraa/aio.hpp
View File

@@ -65,22 +65,32 @@ class Aio
* Read a value from the AIO pin. By default mraa will shift
* the raw value up or down to a 10 bit value.
*
* @throws std::invalid_argument in case of error
* @returns The current input voltage. By default, a 10bit value
*/
int
unsigned int
read()
{
return mraa_aio_read(m_aio);
int x = mraa_aio_read(m_aio);
if (x == -1) {
throw std::invalid_argument("Unknown error in Aio::read()");
}
return (unsigned int) x;
}
/**
* Read a value from the AIO pin and return it as a normalized float.
*
* @throws std::invalid_argument in case of error
* @returns The current input voltage as a normalized float (0.0f-1.0f)
*/
float
readFloat()
{
return mraa_aio_read_float(m_aio);
float x = mraa_aio_read_float(m_aio);
if (x == -1.0f) {
throw std::invalid_argument("Unknown error in Aio::readFloat()");
}
return x;
}
/**
* Set the bit value which mraa will shift the raw reading