139 lines
3.3 KiB
C++
139 lines
3.3 KiB
C++
/**
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* @file dshot300.ino
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* @brief Demo sketch for DShotRMT library
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* @author Wastl Kraus
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* @date 2025-06-11
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* @license MIT
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*/
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#include <Arduino.h>
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#include <DShotRMT.h>
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// USB serial port settings
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static constexpr HardwareSerial &USB_SERIAL = Serial0;
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static constexpr uint32_t USB_SERIAL_BAUD = 115200;
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// Motor configuration
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// Pin number or GPIO_PIN
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// static constexpr gpio_num_t MOTOR01_PIN = GPIO_NUM_17;
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static constexpr uint16_t MOTOR01_PIN = 17;
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// Supported: DSHOT150, DSHOT300, DSHOT600, (DSHOT1200)
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static constexpr dshot_mode_t DSHOT_MODE = DSHOT300;
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// BiDirectional DShot Support (default: false)
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static constexpr bool IS_BIDIRECTIONAL = false;
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// Motor magnet count for RPM calculation
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static constexpr uint8_t MOTOR01_MAGNET_COUNT = 14;
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//
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//
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DShotRMT motor01(MOTOR01_PIN, DSHOT_MODE, IS_BIDIRECTIONAL);
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//
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void setup()
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{
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// Start the USB Serial Port
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USB_SERIAL.begin(USB_SERIAL_BAUD);
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// Initialize DShot Signal
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motor01.begin();
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// Arm ESC with minimum throttle
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// motor01.sendThrottle(DSHOT_THROTTLE_MIN);
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USB_SERIAL.println("***********************************");
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USB_SERIAL.println(" === DShotRMT Demo started. === ");
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USB_SERIAL.println("Enter a throttle value (48 – 2047):");
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}
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//
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void loop()
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{
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// Read value input from Serial
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uint16_t throttle_input = readSerialThrottle(USB_SERIAL);
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// Send the value to the ESC
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motor01.sendThrottle(throttle_input);
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// Prints out RPM if BiDirectional DShot is enabled every 2 seconds
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printRPMPeriodically(2000);
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// Prints out "raw" DShot packet every 2 seconds
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// printTXPacket(2000);
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}
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// Reads throttle value from serial input
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uint16_t readSerialThrottle(HardwareSerial &serial)
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{
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static uint16_t last_throttle = DSHOT_THROTTLE_MIN;
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if (serial.available() > NULL)
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{
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// Reads a value
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uint16_t throttle = (serial.readStringUntil('\n').toInt());
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// Check for valid throttle value
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if (throttle < DSHOT_THROTTLE_MIN || throttle > DSHOT_THROTTLE_MAX)
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{
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USB_SERIAL.println("Throttle value not in range (48 - 2047)!");
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return last_throttle;
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}
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last_throttle = throttle;
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USB_SERIAL.println("*********************");
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USB_SERIAL.print("Throttle set to: ");
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USB_SERIAL.println(last_throttle);
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}
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return last_throttle;
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}
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// Prints RPM every ms
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void printRPMPeriodically(uint16_t timer_ms)
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{
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if (IS_BIDIRECTIONAL)
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{
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static unsigned long last_print_time = 0;
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if (millis() - last_print_time >= timer_ms)
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{
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uint32_t rpm = motor01.getMotorRPM(MOTOR01_MAGNET_COUNT);
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USB_SERIAL.print("RPM: ");
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USB_SERIAL.println(rpm);
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last_print_time = millis();
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}
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}
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}
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// Prints "raw" packet every ms
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void printTXPacket(uint16_t timer_ms)
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{
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static unsigned long last_print_time = 0;
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if (millis() - last_print_time >= timer_ms)
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{
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uint16_t packet = motor01.getDShotPacket();
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// Print bit by bit
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for (int i = 15; i >= 0; --i)
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{
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if ((packet >> i) & 1)
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{
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USB_SERIAL.print("1");
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}
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else
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{
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USB_SERIAL.print("0");
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}
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}
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USB_SERIAL.println("");
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last_print_time = millis();
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}
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}
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