StamPLC input signal and relay control related APIs and example programs.
/* *SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD * *SPDX-License-Identifier: MIT */#include <Arduino.h>#include <M5StamPLC.h> void setup(){ /* Init M5StamPLC */ M5StamPLC.begin();} void loop(){ static bool relay_state = false; /* Toggle relay state */ relay_state = !relay_state; for (int i = 0; i < 4; i++) { M5StamPLC.writePlcRelay(i, relay_state); printf("Write Relay %d to %s\n", i, relay_state ? "ON" : "OFF"); delay(500); } delay(1000);}
Function Prototype:
void writePlcRelay(const uint8_t& channel, const bool& state);
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const uint8_t& channel:
const bool& state:
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Function Prototype:
void writePlcAllRelay(const uint8_t& relayState);
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Function Prototype:
bool readPlcRelay(const uint8_t& channel);
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/* *SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD * *SPDX-License-Identifier: MIT */#include <Arduino.h>#include <M5StamPLC.h> void setup(){ /* Init M5StamPLC */ M5StamPLC.begin();} void loop(){ static std::array<bool, 8> input_list; // Read inputs for (int i = 0; i < 8; i++) { input_list[i] = M5StamPLC.readPlcInput(i); } // Print input reading result printf("Input: %d, %d, %d, %d, %d, %d, %d, %d\n", input_list[0], input_list[1], input_list[2], input_list[3], input_list[4], input_list[5], input_list[6], input_list[7]); delay(1000);}
Function Prototype:
bool readPlcInput(const uint8_t& channel);
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