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Add initial support for Sensors AHT1x

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Add initial support for Sensors AHT10 and AHT15 by Martin Wagner (#7596)
This commit is contained in:
Theo Arends 2020-02-20 13:38:03 +01:00
parent 92258703d8
commit f674feb0ef
4 changed files with 47 additions and 47 deletions
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1
tasmota/CHANGELOG.md
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@ -3,6 +3,7 @@
### 8.1.0.9 20200220
- Revert most wifi connectivity changes introduced in 8.1.0.5 (#7746, #7602, #7621)
- Add initial support for Sensors AHT10 and AHT15 by Martin Wagner (#7596)
### 8.1.0.8 20200212

1
tasmota/tasmota_post.h
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@ -164,6 +164,7 @@ extern "C" void custom_crash_callback(struct rst_info * rst_info, uint32_t stack
//#define USE_PAJ7620 // Enable PAJ7620 gesture sensor (I2C address 0x73) (+2.5k code)
//#define USE_PCF8574 // Enable PCF8574 I/O Expander (I2C addresses 0x20 - 0x26 and 0x39 - 0x3F) (+1k9 code)
#define USE_HIH6 // Enable Honywell HIH Humidity and Temperature sensor (I2C address 0x27) (+0k6)
//#define USE_AHT1x // Enable AHT10/15 humidity and temperature sensor (I2C address 0x38) (+0k8 code)
#define USE_MHZ19 // Add support for MH-Z19 CO2 sensor (+2k code)
#define USE_SENSEAIR // Add support for SenseAir K30, K70 and S8 CO2 sensor (+2k3 code)

88
tasmota/xsns_63_aht1x.ino
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@ -30,10 +30,10 @@
#define AHT10_ADDR 0x38
unsigned char eSensorCalibrateCmd[3] = {0xE1, 0x08, 0x00};
unsigned char eSensorNormalCmd[3] = {0xA8, 0x00, 0x00};
unsigned char eSensorMeasureCmd[3] = {0xAC, 0x33, 0x00};
unsigned char eSensorResetCmd = 0xBA;
uint8_t eSensorCalibrateCmd[3] = {0xE1, 0x08, 0x00};
uint8_t eSensorNormalCmd[3] = {0xA8, 0x00, 0x00};
uint8_t eSensorMeasureCmd[3] = {0xAC, 0x33, 0x00};
uint8_t eSensorResetCmd = 0xBA;
struct AHT10 {
float humidity = NAN;
@ -43,75 +43,73 @@ struct AHT10 {
char name[6] = "AHT1x";
} AHT10;
bool AHT10Read(void)
{
unsigned long result_t, result_h, data[6];
if (AHT10.valid) { AHT10.valid--; }
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorMeasureCmd, 3);
Wire.endTransmission();
delay(100);
uint8_t data[6];
Wire.requestFrom(AHT10_ADDR, 6);
for(uint8_t i = 0; Wire.available() > 0; i++)
{
data[i] = Wire.read();
}
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorMeasureCmd, 3);
Wire.endTransmission();
delay(100);
result_h = ((data[1] << 16) | (data[2] << 8) | data[3]) >> 4;
result_t = ((data[3] & 0x0F) << 16) | (data[4] << 8) | data[5];
Wire.requestFrom(AHT10_ADDR, 6);
for (uint32_t i = 0; Wire.available() > 0; i++) {
data[i] = Wire.read();
}
AHT10.humidity = result_h * 100 / 1048576;
AHT10.temperature = ((200 * result_t) / 1048576) - 50;
uint32_t result_h = ((data[1] << 16) | (data[2] << 8) | data[3]) >> 4;
uint32_t result_t = ((data[3] & 0x0F) << 16) | (data[4] << 8) | data[5];
if (isnan(AHT10.temperature) || isnan(AHT10.humidity)) { return false; }
float humidity = result_h * 100 / 1048576;
float temperature = ((200 * result_t) / 1048576) - 50;
if (isnan(temperature) || isnan(humidity)) { return false; }
AHT10.humidity = ConvertHumidity(humidity);
AHT10.temperature = ConvertTemp(temperature);
AHT10.valid = SENSOR_MAX_MISS;
return true;
}
/********************************************************************************************/
bool AHT10Init()
{
Wire.begin(AHT10_ADDR);
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorCalibrateCmd, 3);
Wire.endTransmission();
delay(500);
if((AHT10ReadStatus() & 0x68) == 0x08) {
return true;}
else
{ return false; }
bool AHT10Init(void)
{
Wire.begin(AHT10_ADDR);
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorCalibrateCmd, 3);
Wire.endTransmission();
delay(500); // ?!?! too long
return (0x08 == (AHT10ReadStatus() & 0x68));
}
unsigned char AHT10ReadStatus(void)
uint8_t AHT10ReadStatus(void)
{
unsigned char result = 0;
Wire.requestFrom(AHT10_ADDR, 1);
result = Wire.read();
return result;
Wire.requestFrom(AHT10_ADDR, 1);
uint8_t result = Wire.read();
return result;
}
void AHT10Reset(void)
{
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorResetCmd);
Wire.endTransmission();
delay(20);
Wire.beginTransmission(AHT10_ADDR);
Wire.write(eSensorResetCmd);
Wire.endTransmission();
delay(20);
}
/********************************************************************************************/
void AHT10Detect(void)
{
if (I2cActive(AHT10_ADDR))
{return;}
if (I2cActive(AHT10_ADDR)) { return; }
if (AHT10Init())
{
if (AHT10Init()) {
I2cSetActiveFound(AHT10_ADDR, AHT10.name);
AHT10.count = 1;
}

4
tools/decode-status.py
View File

@ -193,7 +193,7 @@ a_features = [[
"USE_ARDUINO_SLAVE","USE_HIH6","USE_HPMA","USE_TSL2591",
"USE_DHT12","USE_DS1624","USE_GPS","USE_HOTPLUG",
"USE_NRF24","USE_MIBLE","USE_HM10","USE_LE01MR",
"","","",""
"USE_AHT1x","","",""
],[
"","","","",
"","","","",
@ -236,7 +236,7 @@ else:
obj = json.load(fp)
def StartDecode():
print ("\n*** decode-status.py v20200210 by Theo Arends and Jacek Ziolkowski ***")
print ("\n*** decode-status.py v20200220 by Theo Arends and Jacek Ziolkowski ***")
# print("Decoding\n{}".format(obj))