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Fix HTU21 sensor loss after ESP32 restart

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This commit is contained in:
Theo Arends 2020-04-18 17:04:00 +02:00
parent 684b7dc3a4
commit 48dd608da9
1 changed files with 44 additions and 38 deletions
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82
tasmota/xsns_08_htu21.ino
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@ -59,14 +59,18 @@
const char kHtuTypes[] PROGMEM = "HTU21|SI7013|SI7020|SI7021|T/RH?";
uint8_t htu_address;
uint8_t htu_type = 0;
uint8_t htu_delay_temp;
uint8_t htu_delay_humidity = 50;
uint8_t htu_valid = 0;
float htu_temperature = 0;
float htu_humidity = 0;
char htu_types[7];
struct {
float temperature = 0;
float humidity = 0;
uint8_t address;
uint8_t type = 0;
uint8_t delay_temp;
uint8_t delay_humidity = 50;
uint8_t valid = 0;
char types[7];
} Htu;
/*********************************************************************************************/
uint8_t HtuCheckCrc8(uint16_t data)
{
@ -82,6 +86,8 @@ uint8_t HtuCheckCrc8(uint16_t data)
uint8_t HtuReadDeviceId(void)
{
HtuReset(); // Fixes ESP32 sensor loss at restart
uint16_t deviceID = 0;
uint8_t checksum = 0;
@ -146,12 +152,12 @@ bool HtuRead(void)
uint8_t checksum = 0;
uint16_t sensorval = 0;
if (htu_valid) { htu_valid--; }
if (Htu.valid) { Htu.valid--; }
Wire.beginTransmission(HTU21_ADDR);
Wire.write(HTU21_READTEMP);
if (Wire.endTransmission() != 0) { return false; } // In case of error
delay(htu_delay_temp); // Sensor time at max resolution
delay(Htu.delay_temp); // Sensor time at max resolution
Wire.requestFrom(HTU21_ADDR, 3);
if (3 == Wire.available()) {
@ -161,12 +167,12 @@ bool HtuRead(void)
}
if (HtuCheckCrc8(sensorval) != checksum) { return false; } // Checksum mismatch
htu_temperature = ConvertTemp(0.002681 * (float)sensorval - 46.85);
Htu.temperature = ConvertTemp(0.002681 * (float)sensorval - 46.85);
Wire.beginTransmission(HTU21_ADDR);
Wire.write(HTU21_READHUM);
if (Wire.endTransmission() != 0) { return false; } // In case of error
delay(htu_delay_humidity); // Sensor time at max resolution
delay(Htu.delay_humidity); // Sensor time at max resolution
Wire.requestFrom(HTU21_ADDR, 3);
if (3 <= Wire.available()) {
@ -177,19 +183,19 @@ bool HtuRead(void)
if (HtuCheckCrc8(sensorval) != checksum) { return false; } // Checksum mismatch
sensorval ^= 0x02; // clear status bits
htu_humidity = 0.001907 * (float)sensorval - 6;
if (htu_humidity > 100) { htu_humidity = 100.0; }
if (htu_humidity < 0) { htu_humidity = 0.01; }
Htu.humidity = 0.001907 * (float)sensorval - 6;
if (Htu.humidity > 100) { Htu.humidity = 100.0; }
if (Htu.humidity < 0) { Htu.humidity = 0.01; }
if ((0.00 == htu_humidity) && (0.00 == htu_temperature)) {
htu_humidity = 0.0;
if ((0.00 == Htu.humidity) && (0.00 == Htu.temperature)) {
Htu.humidity = 0.0;
}
if ((htu_temperature > 0.00) && (htu_temperature < 80.00)) {
htu_humidity = (-0.15) * (25 - htu_temperature) + htu_humidity;
if ((Htu.temperature > 0.00) && (Htu.temperature < 80.00)) {
Htu.humidity = (-0.15) * (25 - Htu.temperature) + Htu.humidity;
}
htu_humidity = ConvertHumidity(htu_humidity);
Htu.humidity = ConvertHumidity(Htu.humidity);
htu_valid = SENSOR_MAX_MISS;
Htu.valid = SENSOR_MAX_MISS;
return true;
}
@ -197,17 +203,17 @@ bool HtuRead(void)
void HtuDetect(void)
{
htu_address = HTU21_ADDR;
if (I2cActive(htu_address)) { return; }
Htu.address = HTU21_ADDR;
if (I2cActive(Htu.address)) { return; }
htu_type = HtuReadDeviceId();
if (htu_type) {
Htu.type = HtuReadDeviceId();
if (Htu.type) {
uint8_t index = 0;
HtuInit();
switch (htu_type) {
switch (Htu.type) {
case HTU21_CHIPID:
htu_delay_temp = 50;
htu_delay_humidity = 16;
Htu.delay_temp = 50;
Htu.delay_humidity = 16;
break;
case SI7021_CHIPID:
index++; // 3
@ -215,16 +221,16 @@ void HtuDetect(void)
index++; // 2
case SI7013_CHIPID:
index++; // 1
htu_delay_temp = 12;
htu_delay_humidity = 23;
Htu.delay_temp = 12;
Htu.delay_humidity = 23;
break;
default:
index = 4;
htu_delay_temp = 50;
htu_delay_humidity = 23;
Htu.delay_temp = 50;
Htu.delay_humidity = 23;
}
GetTextIndexed(htu_types, sizeof(htu_types), index, kHtuTypes);
I2cSetActiveFound(htu_address, htu_types);
GetTextIndexed(Htu.types, sizeof(Htu.types), index, kHtuTypes);
I2cSetActiveFound(Htu.address, Htu.types);
}
}
@ -233,15 +239,15 @@ void HtuEverySecond(void)
if (uptime &1) { // Every 2 seconds
// HTU21: 68mS, SI70xx: 37mS
if (!HtuRead()) {
AddLogMissed(htu_types, htu_valid);
AddLogMissed(Htu.types, Htu.valid);
}
}
}
void HtuShow(bool json)
{
if (htu_valid) {
TempHumDewShow(json, (0 == tele_period), htu_types, htu_temperature, htu_humidity);
if (Htu.valid) {
TempHumDewShow(json, (0 == tele_period), Htu.types, Htu.temperature, Htu.humidity);
}
}
@ -258,7 +264,7 @@ bool Xsns08(uint8_t function)
if (FUNC_INIT == function) {
HtuDetect();
}
else if (htu_type) {
else if (Htu.type) {
switch (function) {
case FUNC_EVERY_SECOND:
HtuEverySecond();