77 lines
2.3 KiB
Arduino
77 lines
2.3 KiB
Arduino
/*
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* Esp32SerialMonitor - read a Selectronic SP PRO from an ESP32 and print a
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* dashboard to the USB serial monitor, using the thin Sppro C++ wrapper.
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*
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* The SP PRO serial port is RS-232 (+/-12V) - you MUST use a level shifter
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* (MAX3232); do not wire it straight to a GPIO. See docs/HARDWARE.md:
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*
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* SP PRO RJ45 pin 3 (TXD) --> MAX3232 R1IN ; R1OUT --> ESP32 GPIO16 (RX2)
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* ESP32 GPIO17 (TX2) --> MAX3232 T1IN ; T1OUT --> SP PRO RJ45 pin 6 (RXD)
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* SP PRO RJ45 pin 4/5 (GND)--> MAX3232 GND --> ESP32 GND (common ground!)
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* ESP32 3V3 --> MAX3232 VCC (+ four 0.1uF charge-pump caps)
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*
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* Build with PlatformIO (this folder has its own platformio.ini):
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* cd examples/Esp32SerialMonitor && pio run
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* or open the .ino in the Arduino IDE after installing this library.
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*/
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#include <Sppro.h>
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static const int PIN_RX = 16; /* ESP32 RX2 <- MAX3232 R1OUT */
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static const int PIN_TX = 17; /* ESP32 TX2 -> MAX3232 T1IN */
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static const char *PASSWORD = ""; /* inverter serial-port password ("" if none) */
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/* Sppro wraps any Arduino Stream; here it is UART2. */
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Sppro sp(Serial2);
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bool ready = false;
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static bool connectSppro() {
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if (sp.login(PASSWORD) != SPPRO_OK) {
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Serial.println("login failed - check wiring/password");
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return false;
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}
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if (sp.readScales() != SPPRO_OK) {
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Serial.println("could not read scale factors");
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return false;
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}
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Serial.println("connected to SP PRO");
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return true;
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}
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static void show(const char *name) {
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const sppro_reg_t *reg = sppro_reg_by_name(name);
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if (!reg) return;
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if (reg->conv == SPPRO_C_SHUNT_NAME) {
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Serial.printf("%-26s %12s\n", reg->description, sp.name(name));
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} else {
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double v;
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if (sp.read(name, v) != SPPRO_OK)
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Serial.printf("%-26s (read error)\n", reg->description);
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else
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Serial.printf("%-26s %12.2f %s\n", reg->description, v, reg->units);
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}
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}
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void setup() {
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Serial.begin(115200);
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Serial2.begin(SPPRO_BAUD, SERIAL_8N1, PIN_RX, PIN_TX);
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delay(200);
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ready = connectSppro();
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}
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void loop() {
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if (!ready) {
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delay(2000);
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ready = connectSppro();
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return;
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}
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Serial.println("\n== Selectronic SP PRO ==");
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show("BatteryVolts");
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show("BattSocPercent");
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show("BatteryTemperature");
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show("DCBatteryPower");
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show("LoadAcPower");
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show("CombinedKacoAcPowerHiRes");
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show("ACGeneratorPower");
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delay(5000);
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}
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