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