Prompt
解释下列Arduino代码 #include <Wire.h> #include "paj7620.h" /* Notice: When you want to recognize the Forward/Backward gestures, your gestures' reaction time must less than GES_ENTRY_TIME(0.8s). You also can adjust the reaction time according to the actual circumstance. */ #define GES_REACTION_TIME 500 // You can adjust the reaction time according to the actual circumstance. #define GES_ENTRY_TIME 800 // When you want to recognize the Forward/Backward gestures, your gestures' reaction time must less than GES_ENTRY_TIME(0.8s). #define GES_QUIT_TIME 1000 void setup() { uint8_t error = 0; Serial.begin(9600); Serial.println("\nPAJ7620U2 TEST DEMO: Recognize 9 gestures."); error = paj7620Init(); // initialize Paj7620 registers if (error) { Serial.print("INIT ERROR,CODE:"); Serial.println(error); } else { Serial.println("INIT OK"); } Serial.println("Please input your gestures:\n"); } void loop() { uint8_t data = 0, data1 = 0, error; error = paj7620ReadReg(0x43, 1, &data); // Read Bank_0_Reg_0x43/0x44 for gesture result. if (!error) { switch (data) { // When different gestures be detected, the variable 'data' will be set to different values by paj7620ReadReg(0x43, 1, &data). case GES_RIGHT_FLAG: delay(GES_ENTRY_TIME); paj7620ReadReg(0x43, 1, &data); if (data == GES_FORWARD_FLAG) { Serial.println("Forward"); delay(GES_QUIT_TIME); } else if (data == GES_BACKWARD_FLAG) { Serial.println("Backward"); delay(GES_QUIT_TIME); } else { Serial.println("Right"); } break; case GES_LEFT_FLAG: delay(GES_ENTRY_TIME); paj7620ReadReg(0x43, 1, &data); if (data == GES_FORWARD_FLAG) { Serial.println("Forward"); delay(GES_QUIT_TIME); } else if (data == GES_BACKWARD_FLAG) { Serial.println("Backward"); delay(GES_QUIT_TIME); } else { Serial.println("Left"); } break; case GES_UP_FLAG: delay(GES_ENTRY_TIME); paj7620ReadReg(0x43, 1, &data); if (data == GES_FORWARD_FLAG) { Serial.println("Forward"); delay(GES_QUIT_TIME); } else if (data == GES_BACKWARD_FLAG) { Serial.println("Backward"); delay(GES_QUIT_TIME); } else { Serial.println("Up"); } break; case GES_DOWN_FLAG: delay(GES_ENTRY_TIME); paj7620ReadReg(0x43, 1, &data); if (data == GES_FORWARD_FLAG) { Serial.println("Forward"); delay(GES_QUIT_TIME); } else if (data == GES_BACKWARD_FLAG) { Serial.println("Backward"); delay(GES_QUIT_TIME); } else { Serial.println("Down"); } break; case GES_FORWARD_FLAG: Serial.println("Forward"); delay(GES_QUIT_TIME); break; case GES_BACKWARD_FLAG: Serial.println("Backward"); delay(GES_QUIT_TIME); break; case GES_CLOCKWISE_FLAG: Serial.println("Clockwise"); break; case GES_COUNT_CLOCKWISE_FLAG: Serial.println("anti-clockwise"); break; default: paj7620ReadReg(0x44, 1, &data1); if (data1 == GES_WAVE_FLAG) { Serial.println("wave"); } break; } } delay(100); }
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This is the Arduino code for the PAJ7620 gesture recognition sensor. The code includes setting up the sensor, reading gesture data, recognizing different gestures and outputting corresponding messages. Where GESTURE_REACTION_TIME, GESTURE_ENTRY_TIME, and GESTURE_QUIT_TIME are predefined parameters that determine the timing of gesture recognition. The main loop function of the code is to get the result of the gesture by reading the 0x43 register and respond in different ways depending on the type of gesture. When a pre/post gesture is detected, the user's reaction time must be less than GESTURE_ENTRY_TIME (0.8 seconds) or it will not be recognized. At the end of each loop, there is a delay of 100 milliseconds.
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