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AT42QT1070: Add string based constructor for QTouch

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Signed-off-by: Adelin Dobre <adelin.dobre@rinftech.com>
This commit is contained in:
Adelin Dobre 2018-07-11 17:51:35 +03:00 committed by Stefan Andritoiu
parent 60a5500260
commit ae55df8b75
2 changed files with 35 additions and 0 deletions
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26
src/at42qt1070/at42qt1070.cxx
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@ -62,6 +62,32 @@ AT42QT1070::AT42QT1070(int bus, uint8_t address)
m_overflow = false; m_overflow = false;
} }
AT42QT1070::AT42QT1070(std::string initStr) : mraaIo(initStr)
{
mraa_io_descriptor* descs = mraaIo.getMraaDescriptors();
if(!descs->i2cs) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_init() failed");
}
else {
if( !(m_i2c = descs->i2cs[0]) ) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_i2c_init() failed");
}
}
if (readChipID() != 0x2E) {
throw std::runtime_error("Chip ID does not match the expected value (2Eh)");
}
m_buttonStates = 0;
m_calibrating = false;
m_overflow = false;
}
AT42QT1070::~AT42QT1070() AT42QT1070::~AT42QT1070()
{ {
mraa_i2c_stop(m_i2c); mraa_i2c_stop(m_i2c);

9
src/at42qt1070/at42qt1070.hpp
View File

@ -28,6 +28,7 @@
#include <string> #include <string>
#include <mraa/i2c.h> #include <mraa/i2c.h>
#include <mraa/initio.hpp>
#define AT42QT1070_I2C_BUS 0 #define AT42QT1070_I2C_BUS 0
#define AT42QT1070_DEFAULT_I2C_ADDR 0x1b #define AT42QT1070_DEFAULT_I2C_ADDR 0x1b
@ -149,6 +150,13 @@ class AT42QT1070
*/ */
AT42QT1070(int bus, uint8_t address = AT42QT1070_DEFAULT_I2C_ADDR); AT42QT1070(int bus, uint8_t address = AT42QT1070_DEFAULT_I2C_ADDR);
/**
* Instantiates AT42QT1070 QTouch Sensor based on a given string.
*
* @param initStr string containing specific information for AT42QT1070 initialization.
*/
AT42QT1070(std::string initStr);
/** /**
* AT42QT1070 destructor * AT42QT1070 destructor
*/ */
@ -309,6 +317,7 @@ class AT42QT1070
bool m_overflow; bool m_overflow;
mraa_i2c_context m_i2c; mraa_i2c_context m_i2c;
mraa::MraaIo mraaIo;
uint8_t m_addr; uint8_t m_addr;
}; };
} }