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micsv89: updated to new mraa I2C API and added exceptions

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Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Mihai Tudor Panu 2015-10-06 13:05:24 -07:00
parent 81c5962220
commit 9bd5e78472
1 changed files with 20 additions and 6 deletions
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26
src/micsv89/micsv89.cxx
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@ -31,6 +31,10 @@ MICSV89::MICSV89 (int bus, uint8_t address) {
m_valid = false;
m_address = address;
i2c = new mraa::I2c(bus);
if(i2c->frequency(mraa::I2C_STD) != mraa::SUCCESS){
throw std::invalid_argument(std::string(__FUNCTION__) + ": I2c.frequency(I2C_STD) failed");
return;
}
tx_buf[0] = 0x09;
tx_buf[1] = 0x00;
tx_buf[2] = 0x00;
@ -38,13 +42,23 @@ MICSV89::MICSV89 (int bus, uint8_t address) {
void MICSV89::update() {
m_valid = false;
i2c->address(m_address);
i2c->frequency(MRAA_I2C_STD);
i2c->write(tx_buf, 3);
if(i2c->address(m_address) != mraa::SUCCESS){
throw std::invalid_argument(std::string(__FUNCTION__) + ": I2c.address() failed");
return;
}
if(i2c->write(tx_buf, 3) != mraa::SUCCESS){
throw std::invalid_argument(std::string(__FUNCTION__) + ": I2c.write() failed");
return;
}
sleep(1); //Give the device time to make the measurement.
i2c->address(m_address);
i2c->frequency(MRAA_I2C_STD);
i2c->read(rx_buf, 6);
if(i2c->address(m_address) != mraa::SUCCESS){
throw std::invalid_argument(std::string(__FUNCTION__) + ": I2c.address() failed");
return;
}
if(i2c->read(rx_buf, 6) != 6){
throw std::invalid_argument(std::string(__FUNCTION__) + ": I2c.read() failed");
return;
}
m_valid = true;
}