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[RN8209] Detect voltage changes #1850

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Jan 5, 2024
Merged

[RN8209] Detect voltage changes #1850

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3d5aa52
[RN8209] Detect voltage changes
1technophile Jan 4, 2024
ccce77f
Add documentation
1technophile Jan 5, 2024
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2 changes: 1 addition & 1 deletion docs/use/sensors.md
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Expand Up @@ -52,7 +52,7 @@ This notification pin can be inverted if driving directly or through a transisto
`#define INVERT_LED_NOTIFY true`

### RN8209
You will receive every `TimeBetweenPublishingRN8209` (set into config_RN8209.h) the RN8209 measurements (every 60s per default), or if the difference between the previous current reading and the new reading is more than 0.1A.
You will receive every `TimeBetweenPublishingRN8209` (set into config_RN8209.h) the RN8209 measurements (every 60s per default), or if the difference between the previous current reading and the new reading is more than 0.1A, or if the difference between the previous voltage reading and the new reading is more than 2V.
One reading is done every 0.5s.

`home/OpenMQTTGateway/RN8209toMQTT {"volt":120.34,"current":7.92,"power":954.61}`
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10 changes: 7 additions & 3 deletions main/ZsensorRN8209.ino
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Expand Up @@ -49,6 +49,7 @@ void rn8209_loop(void* mode) {
uint8_t retc = 1;
uint8_t retp = 1;
static float previousCurrent = 0;
static float previousVoltage = 0;
if (ret) {
uint32_t temp_current = 0;
retc = rn8209c_read_current(phase_A, &temp_current);
Expand All @@ -61,21 +62,25 @@ void rn8209_loop(void* mode) {
current = current / 10000.0;
overLimitCurrent(current);
}
if (retv == 0) {
voltage = (float)temp_voltage / 1000.0;
}
}
unsigned long now = millis();
if ((now > (PublishingTimerRN8209 + TimeBetweenPublishingRN8209) ||
!PublishingTimerRN8209 ||
(abs(current - previousCurrent) > MinCurrentThreshold)) &&
(abs(current - previousCurrent) > MinCurrentThreshold) || (abs(voltage - previousVoltage) > MinVoltageThreshold)) &&
!ProcessLock) {
StaticJsonDocument<JSON_MSG_BUFFER> RN8209dataBuffer;
JsonObject RN8209data = RN8209dataBuffer.to<JsonObject>();
if (retc == 0) {
previousCurrent = current;
RN8209data["current"] = round2(current);
}
uint32_t temp_power = 0;
retp = rn8209c_read_power(phase_A, &temp_power);
if (retv == 0) {
voltage = (float)temp_voltage / 1000.0;
previousVoltage = voltage;
RN8209data["volt"] = round2(voltage);
}
if (ret == 1) {
Expand All @@ -88,7 +93,6 @@ void rn8209_loop(void* mode) {
RN8209data["power"] = round2(power);
}
PublishingTimerRN8209 = now;
previousCurrent = current;
if (RN8209data) {
RN8209data["origin"] = subjectRN8209toMQTT;
handleJsonEnqueue(RN8209data, QueueSemaphoreTimeOutTask);
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3 changes: 3 additions & 0 deletions main/config_RN8209.h
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Expand Up @@ -53,4 +53,7 @@ extern void RN8209toMQTT();
#ifndef MinCurrentThreshold
# define MinCurrentThreshold 0.1 // (A) Minimum current change that will trigger the publishing of the RN8209 measurements
#endif
#ifndef MinVoltageThreshold
# define MinVoltageThreshold 2 // (V) Minimum voltage change that will trigger the publishing of the RN8209 measurements
#endif
#endif