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SDS0X1 take one stable reading every 3 minutes

This commit is contained in:
Johann Weging 2018-05-27 14:29:53 +02:00
parent 4a588581d1
commit 87e3dcddb9
1 changed files with 32 additions and 5 deletions
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37
sonoff/xsns_20_novasds.ino
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@ -31,6 +31,10 @@ TasmotaSerial *NovaSdsSerial;
uint8_t novasds_type = 1;
uint8_t novasds_valid = 0;
uint8_t novasds_running = 1;
uint8_t novasds_read_tick = 30;
uint8_t novasds_wakup_tick = 179;
uint8_t novasds_ticker = 0;
struct sds011data {
uint16_t pm100;
@ -69,12 +73,35 @@ bool NovaSdsReadData(bool publish)
void NovaSdsSecond() // Every second
{
if (NovaSdsReadData()) {
novasds_valid = 10;
} else {
if (novasds_valid) {
novasds_valid--;
if (novasds_ticker < novasds_read_tick) {
// wake up the sensor and wait read ticks to stabalize the sensor
if (!novasds_running) {
NovaSdsStart();
novasds_running = 1;
}
// drain the serial without publishing data
NovaSdsReadData(false);
novasds_ticker++;
} else if (novasds_ticker == novasds_read_tick) {
// try to take a single stable reading and sleep the sensor
if (NovaSdsReadData(true)) {
novasds_valid = 1;
NovaSdsStop();
novasds_running = 0;
novasds_ticker++;
} else {
novasds_valid = 0;
}
} else if (novasds_ticker >= novasds_wakup_tick) {
// reset the counter
novasds_ticker = 0;
} else {
// sensor is sleeping keep waiting
novasds_ticker++;
}
}