I am working on a project that involves monitoring temperature and humidity levels using the HDC302x humidity sensor and an MCU. I've configured the sensor in auto measurement mode (10 measurements per second, command: 0x27 0x37), but I'm experiencing an issue with the sensor's behavior after an ALERT is issued.
Issue: When the ALERT is triggered, the sensor defaults to Trigger mode, despite being initially configured to run in auto mode. To address this, I've added a step to reconfigure the sensor to auto-measurement mode within the ISR (code snippet below). However, I'm unsure if this is the correct approach or if there's a better solution.
See sample code snippet -
// ISR
void hum_alert_isr() {
// Read humidity and temperature values
hdc302x_read(hdc302x_handle, hdc302x_read_bytes);
// Extract temperature and humidity values
hdc302x_temp_celsius = hdc302x_to_celsius(hdc302x_read_bytes[0]);
hdc302x_relative_humidity = hdc302x_to_rh(hdc302x_read_bytes[1]);
// Clear status
hdc302x_read_status(hdc302x_handle);
hdc302x_clear_status(hdc302x_handle);
// Re-enter auto measurement mode
hdc302x_enter_auto_meas_mode(hdc302x_handle);
}
Question: Is this the correct approach to handling the ALERT and ensuring the sensor remains in auto measurement mode? Are there any other considerations or potential issues I should be aware of?
Relevant documentation: I've consulted the HDC302x datasheet and the MCU's documentation, but I'm still unsure about the best approach.
Thank you for your time and expertise. I look forward to your guidance.
