Merge pull request #7416 from andrethomas/bmp

BMPxxx - Add support for deep sleep

RELEASENOTES.md

@@ -70,3 +70,4 @@ The following binary downloads have been compiled with ESP8266/Arduino library c
 - Add support for ``AdcParam`` parameters to control ADC0 Current Transformer Apparent Power formula by Jodi Dillon (#7100)
 - Add optional support for Prometheus using file xsns_91_prometheus.ino (#7216)
 - Add experimental support for NRF24L01 as BLE-bridge for Mijia Bluetooth sensors by Christian Baars (#7394)
+- Add support to BMP driver to enter reset state (sleep enable) when deep sleep is used in Tasmota

tasmota/CHANGELOG.md

@@ -6,6 +6,7 @@
 - Add optional support for Prometheus using file xsns_91_prometheus.ino (#7216)
 - Add command ``ShutterButton <parameters>`` to control shutter(s) by to-scho (#7403)
 - Add experimental support for NRF24L01 as BLE-bridge for Mijia Bluetooth sensors by Christian Baars (#7394)
+- Add support to BMP driver to enter reset state (sleep enable) when deep sleep is used in Tasmota
 - Fix LCD line and column positioning (#7387)
 - Fix Display handling of hexadecimal escape characters (#7387)
 - Fix Improved fade linearity with gamma correction

tasmota/xsns_09_bmp.ino

@@ -40,6 +40,10 @@
 
 #define BMP_REGISTER_CHIPID  0xD0
 
+#define BMP_REGISTER_RESET   0xE0 // Register to reset to power on defaults (used for sleep)
+
+#define BMP_CMND_RESET       0xB6 // I2C Parameter for RESET to put BMP into reset state
+
 #define BMP_MAX_SENSORS      2
 
 const char kBmpTypes[] PROGMEM = "BMP180|BMP280|BME280|BME680";
@@ -601,6 +605,25 @@ void BmpShow(bool json)
   }
 }
 
+#ifdef USE_DEEPSLEEP
+
+void BMP_EnterSleep(void)
+{
+  for (uint32_t bmp_idx = 0; bmp_idx < bmp_count; bmp_idx++) {
+    switch (bmp_sensors[bmp_idx].bmp_type) {
+      case BMP180_CHIPID:
+      case BMP280_CHIPID:
+      case BME280_CHIPID:
+        I2cWrite8(bmp_sensors[bmp_idx].bmp_address, BMP_REGISTER_RESET, BMP_CMND_RESET);
+        break;
+      default:
+        break;
+    }
+  }
+}
+
+#endif // USE_DEEPSLEEP
+
 /*********************************************************************************************\
  * Interface
 \*********************************************************************************************/
@@ -627,6 +650,11 @@ bool Xsns09(uint8_t function)
         BmpShow(0);
         break;
 #endif  // USE_WEBSERVER
+#ifdef USE_DEEPSLEEP
+      case FUNC_SAVE_BEFORE_RESTART:
+        BMP_EnterSleep();
+        break;
+#endif // USE_DEEPSLEEP
     }
   }
   return result;