MAX44009 Ambient Light Sensor with ADC library
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Diff: MAX44009.cpp
- Revision:
- 3:b3745ae13d09
- Parent:
- 2:7aa4718b2e2b
- Child:
- 4:1799f106738d
--- a/MAX44009.cpp Tue Feb 13 00:54:47 2018 +0200 +++ b/MAX44009.cpp Mon Feb 19 18:35:44 2018 +0200 @@ -71,16 +71,15 @@ void MAX44009::setIntEnable(bool Enable) { char cmd[2]; cmd[0] = INT_ENABLE; - cmd[1] = 0x00 | Enable; + cmd[1] = (char) 0x00 | Enable; _i2c->write(_addr, cmd, 2); } /** * Get raw reading over I2C - * @return the reading buffer + * @param buff raw reading buffer */ -char *MAX44009::getRawReading() { - char buff[2]; +void MAX44009::getRawReading(char buff[2]) { char cmd[2]; cmd[0] = LUX_HIGH_B; @@ -90,15 +89,15 @@ _i2c->read(_addr + 1, &buff[0], 1, true); _i2c->write(_addr, &cmd[1], 1, true); _i2c->read(_addr + 1, &buff[1], 1); - - return buff; } /** * Get LUX reading from ADC */ double MAX44009::getLUXReading() { - char *buff = getRawReading(); + char buff[2]; + + this->getRawReading(buff); return this->getLuxFromBuffReading(buff); }