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polish SMA HomeManager integration
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* remove/comment unused variables to avoid compiler warnings

* cleanups: fix indention and style, make variable private, implement
  getters in header and make const.

* optimize message output: respect verbose logging setting. prefix
  output with SMA_HM.

* use newly introduced mutex in PowerMeterClass also for SMA HomeManager

* refactor code for readibility, unindent where possible.
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@schlimmchen
schlimmchen committed Mar 17, 2024
1 parent d420b27 commit 5cca71f
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Showing 3 changed files with 181 additions and 162 deletions.
23 changes: 15 additions & 8 deletions include/SMA_HM.h
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Original file line number Diff line number Diff line change
Expand Up @@ -9,21 +9,28 @@

class SMA_HMClass {
public:
void init(Scheduler& scheduler);
void init(Scheduler& scheduler, bool verboseLogging);
void loop();
void event1();
float getPowerTotal();
float getPowerL1();
float getPowerL2();
float getPowerL3();
uint32_t serial = 0;
float getPowerTotal() const { return _powerMeterPower; }
float getPowerL1() const { return _powerMeterL1; }
float getPowerL2() const { return _powerMeterL2; }
float getPowerL3() const { return _powerMeterL3; }

private:
uint32_t _lastUpdate = 0;
void Soutput(int kanal, int index, int art, int tarif,
char const* name, float value, uint32_t timestamp);

uint8_t* decodeGroup(uint8_t* offset, uint16_t grouplen);

bool _verboseLogging = false;
float _powerMeterPower = 0.0;
float _powerMeterL1 = 0.0;
float _powerMeterL2 = 0.0;
float _powerMeterL3 = 0.0;
uint32_t previousMillis = 0;
uint32_t _previousMillis = 0;
uint32_t _serial = 0;
Task _loopTask;
};

extern SMA_HMClass SMA_HM;
3 changes: 2 additions & 1 deletion src/PowerMeter.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,7 @@ void PowerMeterClass::init(Scheduler& scheduler)
break;

case SOURCE_SMAHM2:
SMA_HM.init(scheduler);
SMA_HM.init(scheduler, config.PowerMeter.VerboseLogging);
break;
}
}
Expand Down Expand Up @@ -229,6 +229,7 @@ void PowerMeterClass::readPowerMeter()
}
}
else if (config.PowerMeter.Source == SOURCE_SMAHM2) {
std::lock_guard<std::mutex> l(_mutex);
_powerMeter1Power = SMA_HM.getPowerL1();
_powerMeter2Power = SMA_HM.getPowerL2();
_powerMeter3Power = SMA_HM.getPowerL3();
Expand Down
317 changes: 164 additions & 153 deletions src/SMA_HM.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13,18 +13,22 @@ unsigned int multicastPort = 9522; // local port to listen on
IPAddress multicastIP(239, 12, 255, 254);
WiFiUDP SMAUdp;

const uint32_t interval = 1000;

static void Soutput(int kanal, int index, int art, int tarif, String Bezeichnung, double value, int timestamp){
MessageOutput.print(Bezeichnung);
MessageOutput.print('=');
MessageOutput.println(value);
}
constexpr uint32_t interval = 1000;

SMA_HMClass SMA_HM;

void SMA_HMClass::init(Scheduler& scheduler)
void SMA_HMClass::Soutput(int kanal, int index, int art, int tarif,
char const* name, float value, uint32_t timestamp)
{
if (!_verboseLogging) { return; }

MessageOutput.printf("SMA_HM: %s = %.1f (timestamp %d)\r\n",
name, value, timestamp);
}

void SMA_HMClass::init(Scheduler& scheduler, bool verboseLogging)
{
_verboseLogging = verboseLogging;
scheduler.addTask(_loopTask);
_loopTask.setCallback(std::bind(&SMA_HMClass::loop, this));
_loopTask.setIterations(TASK_FOREVER);
Expand All @@ -35,158 +39,165 @@ void SMA_HMClass::init(Scheduler& scheduler)

void SMA_HMClass::loop()
{
uint32_t currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
event1();
}
uint32_t currentMillis = millis();
if (currentMillis - _previousMillis >= interval) {
_previousMillis = currentMillis;
event1();
}
}

void SMA_HMClass::event1()
uint8_t* SMA_HMClass::decodeGroup(uint8_t* offset, uint16_t grouplen)
{
uint8_t buffer[1024];
int packetSize = SMAUdp.parsePacket();
float Pbezug,BezugL1,BezugL2,BezugL3;
Pbezug = 0;
BezugL1 = 0;
BezugL2 = 0;
BezugL3 = 0;
float Peinspeisung,EinspeisungL1,EinspeisungL2,EinspeisungL3;
Peinspeisung = 0;
EinspeisungL1 = 0;
EinspeisungL2 = 0;
EinspeisungL3 = 0;
int count =0;
if (packetSize) {
int rSize = SMAUdp.read(buffer, 1024);
if (buffer[0] != 'S' || buffer[1] != 'M' || buffer[2] != 'A') {
MessageOutput.println("Not an SMA packet?");
return;
float Pbezug = 0;
float BezugL1 = 0;
float BezugL2 = 0;
float BezugL3 = 0;
float Peinspeisung = 0;
float EinspeisungL1 = 0;
float EinspeisungL2 = 0;
float EinspeisungL3 = 0;

uint8_t* endOfGroup = offset + grouplen;

// not used: uint16_t protocolID = (offset[0] << 8) + offset[1];
offset += 2;

// not used: uint16_t susyID = (offset[0] << 8) + offset[1];
offset += 2;

_serial = (offset[0] << 24) + (offset[1] << 16) + (offset[2] << 8) + offset[3];
offset += 4;

uint32_t timestamp = (offset[0] << 24) + (offset[1] << 16) + (offset[2] << 8) + offset[3];
offset += 4;

unsigned count = 0;
while (offset < endOfGroup) {
uint8_t kanal = offset[0];
uint8_t index = offset[1];
uint8_t art = offset[2];
uint8_t tarif = offset[3];
offset += 4;

if (kanal == 144) {
// Optional: Versionsnummer auslesen... aber interessiert die?
offset += 4;
continue;
}

if (art == 8) {
offset += 8;
continue;
}
uint16_t grouplen;
uint16_t grouptag;
uint8_t* offset = buffer + 4;
do {
grouplen = (offset[0] << 8) + offset[1];
grouptag = (offset[2] << 8) + offset[3];

if (art == 4) {
uint32_t data = (offset[0] << 24) +
(offset[1] << 16) +
(offset[2] << 8) +
offset[3];
offset += 4;
if (grouplen == 0xffff) return;
if (grouptag == 0x02A0 && grouplen == 4) {
offset += 4;
} else if (grouptag == 0x0010) {
uint8_t* endOfGroup = offset + grouplen;
uint16_t protocolID = (offset[0] << 8) + offset[1];
offset += 2;
uint16_t susyID = (offset[0] << 8) + offset[1];
offset += 2;
uint32_t serial = (offset[0] << 24) + (offset[1] << 16) + (offset[2] << 8) + offset[3];
SMA_HM.serial=serial;
offset += 4;
uint32_t timestamp = (offset[0] << 24) + (offset[1] << 16) + (offset[2] << 8) + offset[3];
offset += 4;
while (offset < endOfGroup) {
uint8_t kanal = offset[0];
uint8_t index = offset[1];
uint8_t art = offset[2];
uint8_t tarif = offset[3];
offset += 4;
if (art == 8) {
uint64_t data = ((uint64_t)offset[0] << 56) +
((uint64_t)offset[1] << 48) +
((uint64_t)offset[2] << 40) +
((uint64_t)offset[3] << 32) +
((uint64_t)offset[4] << 24) +
((uint64_t)offset[5] << 16) +
((uint64_t)offset[6] << 8) +
offset[7];
offset += 8;
} else if (art == 4) {
uint32_t data = (offset[0] << 24) +
(offset[1] << 16) +
(offset[2] << 8) +
offset[3];
offset += 4;
switch (index) {
case (1):
Pbezug = data * 0.1;
count +=1;
break;
case (2):
Peinspeisung = data * 0.1;
count +=1;
break;
case (21):
BezugL1 = data * 0.1;
count +=1;
break;
case (22):
EinspeisungL1 = data * 0.1;
count +=1;
break;
case (41):
BezugL2 = data * 0.1;
count +=1;
break;
case (42):
EinspeisungL2 = data * 0.1;
count +=1;
break;
case (61):
BezugL3 = data * 0.1;
count +=1;
break;
case (62):
count +=1;
EinspeisungL3 = data * 0.1;
break;
default:
break; // Wird nicht benötigt, wenn Statement(s) vorhanden sind
}
if (count == 8){
_powerMeterPower = Peinspeisung - Pbezug;
_powerMeterL1=EinspeisungL1-BezugL1;
_powerMeterL2=EinspeisungL2-BezugL2;
_powerMeterL3=EinspeisungL3-BezugL3;
Soutput(kanal, index, art, tarif, "Leistung", _powerMeterPower, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L1", _powerMeterL1, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L2", _powerMeterL2, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L3", _powerMeterL3, timestamp);
count=0;
}
} else if (kanal==144) {
// Optional: Versionsnummer auslesen... aber interessiert die?
offset += 4;
} else {
offset += art;
MessageOutput.println("Strange measurement skipped");
}
}
} else if (grouptag == 0) {
// end marker
offset += grouplen;
} else {
MessageOutput.print("unhandled group ");
MessageOutput.print(grouptag);
MessageOutput.print(" with len=");
MessageOutput.println(grouplen);
offset += grouplen;

switch (index) {
case (1):
Pbezug = data * 0.1;
++count;
break;
case (2):
Peinspeisung = data * 0.1;
++count;
break;
case (21):
BezugL1 = data * 0.1;
++count;
break;
case (22):
EinspeisungL1 = data * 0.1;
++count;
break;
case (41):
BezugL2 = data * 0.1;
++count;
break;
case (42):
EinspeisungL2 = data * 0.1;
++count;
break;
case (61):
BezugL3 = data * 0.1;
++count;
break;
case (62):
EinspeisungL3 = data * 0.1;
++count;
break;
default:
break;
}

if (count == 8) {
_powerMeterPower = Peinspeisung - Pbezug;
_powerMeterL1 = EinspeisungL1 - BezugL1;
_powerMeterL2 = EinspeisungL2 - BezugL2;
_powerMeterL3 = EinspeisungL3 - BezugL3;
Soutput(kanal, index, art, tarif, "Leistung", _powerMeterPower, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L1", _powerMeterL1, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L2", _powerMeterL2, timestamp);
Soutput(kanal, index, art, tarif, "Leistung L3", _powerMeterL3, timestamp);
count = 0;
}
} while (grouplen > 0 && offset + 4 < buffer + rSize);

continue;
}

MessageOutput.printf("SMA_HM: Skipped unknown measurement: %d %d %d %d\r\n",
kanal, index, art, tarif);
offset += art;
}

return offset;
}
float SMA_HMClass::getPowerTotal()
{
return _powerMeterPower;
}
float SMA_HMClass::getPowerL1()
{
return _powerMeterL1;
}
float SMA_HMClass::getPowerL2()
{
return _powerMeterL2;
}
float SMA_HMClass::getPowerL3()

void SMA_HMClass::event1()
{
return _powerMeterL3;
int packetSize = SMAUdp.parsePacket();
if (!packetSize) { return; }

uint8_t buffer[1024];
int rSize = SMAUdp.read(buffer, 1024);
if (buffer[0] != 'S' || buffer[1] != 'M' || buffer[2] != 'A') {
MessageOutput.println("SMA_HM: Not an SMA packet?");
return;
}

uint16_t grouplen;
uint16_t grouptag;
uint8_t* offset = buffer + 4; // skips the header 'SMA\0'

do {
grouplen = (offset[0] << 8) + offset[1];
grouptag = (offset[2] << 8) + offset[3];
offset += 4;

if (grouplen == 0xffff) return;

if (grouptag == 0x02A0 && grouplen == 4) {
offset += 4;
continue;
}

if (grouptag == 0x0010) {
offset = decodeGroup(offset, grouplen);
continue;
}

if (grouptag == 0) {
// end marker
offset += grouplen;
continue;
}

MessageOutput.printf("SMA_HM: Unhandled group 0x%04x with length %d\r\n",
grouptag, grouplen);
offset += grouplen;
} while (grouplen > 0 && offset + 4 < buffer + rSize);
}

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