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Consolidate SHTs into one class (#9859)

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* Consolidate SHTs into one class

* Remove separate SHT imports
* Create one single SHTXX sensor type
* Let the SHTXXSensor class handle variant detection

* Minor logging improvements

* Add functions to set accuracy on SHT3X and SHT4X

* Fix variable init in constructor

* Add bus to SHT sensor init

* Update src/modules/Telemetry/Sensor/SHTXXSensor.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update src/modules/Telemetry/Sensor/SHTXXSensor.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Fix accuracy conditions on SHTXX

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Merge upstream

* Add SHT2X detection on 0x40

* Read second part of SHT2X serial number

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
oscgonfer
2026-04-04 06:51:15 -05:00
committed by GitHub
co-authored by GitHub Ben Meadors Copilot
parent 71c8143f72
commit 2f19a1d7a4
13 changed files with 254 additions and 228 deletions
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src/detect/ScanI2CTwoWire.cpp
+58 -12
View File
@@ -136,7 +136,9 @@ bool ScanI2CTwoWire::i2cCommandResponseLength(ScanI2C::DeviceAddress addr, uint1
return match;
}
/// for SEN5X detection
#if HAS_TELEMETRY && !MESHTASTIC_EXCLUDE_AIR_QUALITY_SENSOR
// FIXME Move to a separate file for detection of sensors that require more complex interactions?
// For SEN5X detection
// Note, this code needs to be called before setting the I2C bus speed
// for the screen at high speed. The speed needs to be at 100kHz, otherwise
// detection will not work
@@ -174,6 +176,46 @@ String readSEN5xProductName(TwoWire *i2cBus, uint8_t address)
return String(productName);
}
#endif
#if HAS_TELEMETRY && !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
bool detectSHT21SerialNumber(TwoWire *i2cBus, uint8_t address)
{
i2cBus->beginTransmission(address);
i2cBus->write(0xFA);
i2cBus->write(0x0F);
if (i2cBus->endTransmission() != 0)
return false;
if (i2cBus->requestFrom(address, (uint8_t)8) != 8)
return false;
// Just flush the data
while (i2cBus->available() < 8) {
i2cBus->read();
}
i2cBus->beginTransmission(address);
i2cBus->write(0xFC);
i2cBus->write(0xC9);
if (i2cBus->endTransmission() != 0)
return false;
if (i2cBus->requestFrom(address, (uint8_t)6) != 6)
return false;
// Just flush the data
while (i2cBus->available() < 6) {
i2cBus->read();
}
// Assume we detect the SHT21 if something came back from the request
return true;
}
#endif
#define SCAN_SIMPLE_CASE(ADDR, T, ...) \
case ADDR: \
@@ -371,7 +413,7 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
break;
#endif
#if !defined(M5STACK_UNITC6L)
case INA_ADDR:
case INA_ADDR: // Same as SHT2X
case INA_ADDR_ALTERNATE:
case INA_ADDR_WAVESHARE_UPS:
registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0xFE), 2);
@@ -387,7 +429,12 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
logFoundDevice("INA260", (uint8_t)addr.address);
type = INA260;
}
} else { // Assume INA219 if INA260 ID is not found
#if HAS_TELEMETRY && !MESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR
} else if (detectSHT21SerialNumber(i2cBus, (uint8_t)addr.address)) {
logFoundDevice("SHTXX (SHT2X)", (uint8_t)addr.address);
type = SHTXX;
#endif
} else { // Assume INA219 if none of the above ones are found
logFoundDevice("INA219", (uint8_t)addr.address);
type = INA219;
}
@@ -448,22 +495,19 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
}
break;
}
case SHT31_4x_ADDR: // same as OPT3001_ADDR_ALT
case SHT31_4x_ADDR_ALT: // same as OPT3001_ADDR
case SHTXX_ADDR: // same as OPT3001_ADDR_ALT
case SHTXX_ADDR_ALT: // same as OPT3001_ADDR
if (getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0x7E), 2) == 0x5449) {
type = OPT3001;
logFoundDevice("OPT3001", (uint8_t)addr.address);
} else if (i2cCommandResponseLength(addr, 0x89, 6)) { // SHT4x serial number (6 bytes inc. CRC)
type = SHT4X;
logFoundDevice("SHT4X", (uint8_t)addr.address);
} else {
type = SHT31;
logFoundDevice("SHT31", (uint8_t)addr.address);
} else { // SHTXX
type = SHTXX;
logFoundDevice("SHTXX", (uint8_t)addr.address);
}
break;
SCAN_SIMPLE_CASE(SHTC3_ADDR, SHTC3, "SHTC3", (uint8_t)addr.address)
SCAN_SIMPLE_CASE(SHTC3_ADDR, SHTXX, "SHTXX", (uint8_t)addr.address)
case RCWL9620_ADDR:
// get MAX30102 PARTID
registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0xFF), 1);
@@ -675,6 +719,7 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
logFoundDevice("BMX160", (uint8_t)addr.address);
break;
} else {
#if HAS_TELEMETRY && !MESHTASTIC_EXCLUDE_AIR_QUALITY_SENSOR
String prod = "";
prod = readSEN5xProductName(i2cBus, addr.address);
if (prod.startsWith("SEN55")) {
@@ -690,6 +735,7 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
logFoundDevice("Sensirion SEN50", addr.address);
break;
}
#endif
if (addr.address == BMX160_ADDR) {
type = BMX160;
logFoundDevice("BMX160", (uint8_t)addr.address);