SEN0501 Environmental Sensor Reference: API, Protocol & Pinout

Library

Communication Protocol Description

The environmental sensor supports two communication methods, UART and I2C.

About UART/I2C mode switching:

The default mode in the code is UART. Dial the switch to UART side to use it.
For using I2C, dial the switch to I2C side and replace the 1 at the beginning of the code with 0, as shown below:

mode to MODE

API Description

/**
   * @fn begin
   * @brief Init SEN0500/SEN0501 sensor
   * @return Return init status
   * @retval 0  Succeed
   * @retval -1 failed
   */
  int8_t begin(void);

  /**
   * @fn getTemperature
   * @brief Get SEN0500/SEN0501 temperature data
   * @param units Temperature data unit select
   * @n     TEMP_C ℃
   * @n     TEMP_F ℉ 
   * @return Return the obtained temperature data
   */
  float getTemperature(uint8_t unist);

  /**
   * @fn getHumidity
   * @brief Get SEN0500/SEN0501 humidity data 
   * @return Return the obtained humidity data
   */
  float getHumidity(void);

  /**
   * @fn getUltravioletIntensity
   * @brief Get SEN0500/SEN0501 UV intensity index data 
   * @return Return the obtained UV intensity index data
   */
  float getUltravioletIntensity(void);

  /**
   * @fn getLuminousIntensity
   * @brief Get SEN0500/SEN0501 luminous intensity data 
   * @return Return the obtained luminous intensity data
   */
  float getLuminousIntensity(void);

  /**
   * @fn getAtmospherePressure
   * @brief Get SEN0500/SEN0501 atmosphere pressure data 
   * @param units Atmosphere pressure data unit select
   * @n            HPA: Hectopascal
   * @n            KPA: Kilopascal
   * @return Return the obtained atmosphere pressure data
   */
  uint16_t getAtmospherePressure(uint8_t units);

  /**
   * @fn getElevation
   * @brief Get SEN0500/SEN0501 altitude data 
   * @return Return the obtained altitude data
   */
  float getElevation(void);

Other Supplementary Information

SEN0500(SEN0501）Design changes notification-EN .pdf