Fix AM2302 sensor

code/espurna/config/prototypes.h

@@ -77,6 +77,7 @@ bool i2cGetLock(unsigned char address);
 bool i2cReleaseLock(unsigned char address);
 unsigned char i2cFindAndLock(size_t size, unsigned char * addresses);
 
+void i2c_wakeup(uint8_t address);
 uint8_t i2c_write_buffer(uint8_t address, uint8_t * buffer, size_t len);
 uint8_t i2c_write_uint8(uint8_t address, uint8_t value);
 uint8_t i2c_write_uint8(uint8_t address, uint8_t reg, uint8_t value);

code/espurna/sensors/AM2320Sensor.h

@@ -120,7 +120,9 @@ class AM2320Sensor : public I2CSensor {
 */
 
         void _read() {
+
             i2c_wakeup();
+
             // waiting time of at least 800 μs, the maximum 3000 μs
             delayMicroseconds(800); // just to be on safe side
 
@@ -128,7 +130,7 @@ class AM2320Sensor : public I2CSensor {
             //    4 = number of bytes to read
             if (i2c_write_uint8(_address, AM2320_I2C_READ_REGISTER_DATA, 0x00, 4) != I2C_TRANS_SUCCESS) {
                 _error = SENSOR_ERROR_TIMEOUT;
-                return false;
+                return;
             }
 
             unsigned char _buffer[8];