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GOB
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/*
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* SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
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*
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* SPDX-License-Identifier: MIT
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*/
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/*
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Example using M5UnitUnified for UnitRF433T
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*/
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#include <M5Unified.h>
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#include <M5UnitUnified.h>
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#include <M5UnitUnifiedRF433.h>
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#include <esp_random.h>
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namespace {
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auto& lcd = M5.Display;
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m5::unit::UnitUnified Units;
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m5::unit::UnitRF433T unit;
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// Payload size sweep test.
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// Use this to find the maximum reliable payload size for your receiver environment.
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// Edit sweep_sizes[] to narrow down the boundary for your setup.
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// The receiver's max depends on RMT hardware and RF noise (see rf433::MaxPayloadSize).
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constexpr uint8_t sweep_sizes[] = {16, 20, 21, 22, 23, 24, 25, 32, 64, 128, 255};
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constexpr size_t SWEEP_COUNT = sizeof(sweep_sizes) / sizeof(sweep_sizes[0]);
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uint8_t sweep_buf[255];
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uint8_t sweep_idx{};
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} // namespace
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void setup()
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{
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M5.begin();
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M5.setTouchButtonHeightByRatio(100);
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// The screen shall be in landscape mode
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if (lcd.height() > lcd.width()) {
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lcd.setRotation(1);
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}
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auto pin_num_gpio_in = M5.getPin(m5::pin_name_t::port_b_in);
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auto pin_num_gpio_out = M5.getPin(m5::pin_name_t::port_b_out);
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if (pin_num_gpio_in < 0 || pin_num_gpio_out < 0) {
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M5_LOGW("PortB is not available");
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Wire.end();
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pin_num_gpio_in = M5.getPin(m5::pin_name_t::port_a_pin1);
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pin_num_gpio_out = M5.getPin(m5::pin_name_t::port_a_pin2);
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}
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M5_LOGI("getPin: %d,%d", pin_num_gpio_in, pin_num_gpio_out);
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if (!Units.add(unit, pin_num_gpio_in, pin_num_gpio_out) || !Units.begin()) {
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M5_LOGE("Failed to begin");
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lcd.fillScreen(TFT_RED);
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while (true) {
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m5::utility::delay(10000);
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}
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}
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auto* custom = static_cast<m5::unit::rf433::M5Codec*>(unit.codec().get());
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custom->setCommunicationIdentifier(esp_random());
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// Fill sweep buffer with printable pattern
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for (uint16_t i = 0; i < 255; ++i) {
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sweep_buf[i] = 'A' + (i % 26);
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}
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M5_LOGI("M5UnitUnified initialized");
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M5_LOGI("%s", Units.debugInfo().c_str());
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M5.Log.printf("MyID: %02X\n", custom->communicationIdentifier());
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lcd.fillScreen(TFT_DARKGREEN);
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lcd.setCursor(0, 0);
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lcd.setTextSize(1);
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lcd.printf("TX %02X", custom->communicationIdentifier());
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}
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void loop()
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{
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M5.update();
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Units.update(); // Send in update()
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// Send: payload size sweep
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if (M5.BtnA.wasClicked()) {
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uint8_t sz = sweep_sizes[sweep_idx];
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sweep_buf[sz - 1] = '\0'; // null terminate
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M5.Log.printf("Send: %u bytes\n", sz);
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lcd.fillScreen(TFT_BLUE);
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unit.push_back(sweep_buf, sz);
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unit.send();
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lcd.fillScreen(TFT_DARKGREEN);
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lcd.setCursor(0, 0);
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lcd.setTextSize(1);
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lcd.printf("TX %02X\n%u bytes",
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static_cast<m5::unit::rf433::M5Codec*>(unit.codec().get())->communicationIdentifier(), sz);
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sweep_buf[sz - 1] = 'A' + ((sz - 1) % 26); // restore pattern
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if (++sweep_idx >= SWEEP_COUNT) {
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sweep_idx = 0;
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}
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M5.Speaker.tone(4000, 20);
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}
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}
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