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| #include <ModbusMaster.h> | |
| ModbusMaster decibel; | |
| void setup() { | |
| Serial.begin(115200); | |
| // Modbus communication runs at 9600 baud | |
| Serial2.begin(9600, SERIAL_8N1, 27, 26); // IOXESP32 Modbus RTU shield | |
| // ATS-DECIBEL init with Modbus slave ID 1 | |
| decibel.begin(1, Serial2); | |
| } | |
| void loop() { | |
| // ATS-DECIBEL read | |
| uint8_t result; | |
| result = decibel.readInputRegisters(1, 2); // Read Input Register start at 1 -> 2 word (0x0001 - 0x0002) | |
| if (result == decibel.ku8MBSuccess) { | |
| float sound_level_db = decibel.getResponseBuffer(0) / 10.0; | |
| Serial.println("Sound Level: " + String(sound_level_db, 1) + " dB"); | |
| } else { | |
| Serial.println("Read ATS-DECIBEL error, check your serial configs, wiring and power supply"); | |
| } | |
| delay(1000); | |
| } |
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