Add QMP6988 environmental telemetry support

src/configuration.h

@@ -241,6 +241,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define QMC5883L_ADDR 0x0D
 #define HMC5883L_ADDR 0x1E
 #define SHTC3_ADDR 0x70
+#define QMP6988_ADDR 0x70
+#define QMP6988_ADDR_ALT 0x56
 #define LPS22HB_ADDR 0x5C
 #define LPS22HB_ADDR_ALT 0x5D
 #define SFA30_ADDR 0x5D

src/detect/ScanI2C.h

@@ -97,6 +97,7 @@ class ScanI2C
         CW2015,
         SCD30,
         ADS1115,
+        QMP6988
     } DeviceType;
 
     // typedef uint8_t DeviceAddress;

src/detect/ScanI2CTwoWire.cpp

@@ -179,6 +179,9 @@ String readSEN5xProductName(TwoWire *i2cBus, uint8_t address)
 #endif
 
 #if HAS_TELEMETRY && !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
+constexpr uint8_t QMP6988_DETECT_CHIP_ID = 0x5C;
+constexpr uint8_t QMP6988_DETECT_CHIP_ID_REG = 0xD1;
+
 bool detectSHT21SerialNumber(TwoWire *i2cBus, uint8_t address)
 {
 
@@ -215,6 +218,19 @@ bool detectSHT21SerialNumber(TwoWire *i2cBus, uint8_t address)
     // Assume we detect the SHT21 if something came back from the request
     return true;
 }
+
+bool detectQMP6988ChipId(TwoWire *i2cBus, uint8_t address)
+{
+    i2cBus->beginTransmission(address);
+    i2cBus->write(QMP6988_DETECT_CHIP_ID_REG);
+    if (i2cBus->endTransmission() != 0)
+        return false;
+
+    if (i2cBus->requestFrom((int)address, 1) != 1)
+        return false;
+
+    return i2cBus->available() && i2cBus->read() == QMP6988_DETECT_CHIP_ID;
+}
 #endif
 
 #define SCAN_SIMPLE_CASE(ADDR, T, ...)                                                                                           \
@@ -506,8 +522,21 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
                 }
 
                 break;
-
-                SCAN_SIMPLE_CASE(SHTC3_ADDR, SHTXX, "SHTXX", (uint8_t)addr.address)
+            case QMP6988_ADDR_ALT:
+                if (detectQMP6988ChipId(i2cBus, (uint8_t)addr.address)) {
+                    type = QMP6988;
+                    logFoundDevice("QMP6988", (uint8_t)addr.address);
+                }
+                break;
+            case SHTC3_ADDR:
+                if (detectQMP6988ChipId(i2cBus, (uint8_t)addr.address)) {
+                    type = QMP6988;
+                    logFoundDevice("QMP6988", (uint8_t)addr.address);
+                } else {
+                    type = SHTXX;
+                    logFoundDevice("SHTXX", (uint8_t)addr.address);
+                }
+                break;
             case RCWL9620_ADDR:
                 // get MAX30102 PARTID
                 registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0xFF), 1);

src/mesh/generated/meshtastic/telemetry.pb.h

@@ -115,7 +115,9 @@ typedef enum _meshtastic_TelemetrySensorType {
     /* SHT family of sensors for temperature and humidity */
     meshtastic_TelemetrySensorType_SHTXX = 50,
     /* DS248X Bridge for one-wire temperature sensors */
-    meshtastic_TelemetrySensorType_DS248X = 51
+    meshtastic_TelemetrySensorType_DS248X = 51,
+    /* QST QMP6988 temperature and pressure sensor */
+    meshtastic_TelemetrySensorType_QMP6988 = 52
 } meshtastic_TelemetrySensorType;
 
 /* Struct definitions */
@@ -496,8 +498,8 @@ extern "C" {
 
 /* Helper constants for enums */
 #define _meshtastic_TelemetrySensorType_MIN meshtastic_TelemetrySensorType_SENSOR_UNSET
-#define _meshtastic_TelemetrySensorType_MAX meshtastic_TelemetrySensorType_DS248X
-#define _meshtastic_TelemetrySensorType_ARRAYSIZE ((meshtastic_TelemetrySensorType)(meshtastic_TelemetrySensorType_DS248X+1))
+#define _meshtastic_TelemetrySensorType_MAX meshtastic_TelemetrySensorType_QMP6988
+#define _meshtastic_TelemetrySensorType_ARRAYSIZE ((meshtastic_TelemetrySensorType)(meshtastic_TelemetrySensorType_QMP6988+1))
 
 
 

src/modules/Telemetry/EnvironmentTelemetry.cpp

@@ -62,6 +62,8 @@ extern void drawCommonHeader(OLEDDisplay *display, int16_t x, int16_t y, const c
 #include "Sensor/DPS310Sensor.h"
 #endif
 
+#include "Sensor/QMP6988Sensor.h"
+
 #if __has_include(<Adafruit_MCP9808.h>)
 #include "Sensor/MCP9808Sensor.h"
 #endif
@@ -200,6 +202,7 @@ void EnvironmentTelemetryModule::i2cScanFinished(ScanI2C *i2cScanner)
 #if __has_include(<Adafruit_DPS310.h>)
     addSensor<DPS310Sensor>(i2cScanner, ScanI2C::DeviceType::DPS310);
 #endif
+    addSensor<QMP6988Sensor>(i2cScanner, ScanI2C::DeviceType::QMP6988);
 #if __has_include(<Adafruit_MCP9808.h>)
     addSensor<MCP9808Sensor>(i2cScanner, ScanI2C::DeviceType::MCP9808);
 #endif