SmartWheels self-driving race car. Designed for NXP Cup. Uses FRDM-KL25Z, area-scan camera, and simple image processing to detect and navigate any NXP spec track.
Dependencies: TSI USBDevice mbed-dev
Fork of SmartWheels by
Diff: main.cpp
- Revision:
- 52:078b521c9edf
- Parent:
- 51:a8e58fd3e131
- Child:
- 53:36d9335fec96
--- a/main.cpp Thu Apr 06 18:37:16 2017 +0000 +++ b/main.cpp Thu Apr 06 18:57:54 2017 +0000 @@ -42,7 +42,6 @@ ardu_cam_init(); - float tempCount = 0; //timer.reset(); timer.start(); float timeWas = timer.read(); @@ -50,33 +49,14 @@ servo_set_angle(0.0f); while (1) { - - //servo_set_angle(0.0f); - float deltaTime = timeWas; timeWas = timer.read(); deltaTime = timeWas - deltaTime; - //led = 0; g_core.Update(deltaTime); - //motor.Update(deltaTime); - //servo.Update(deltaTime); - //wheelEncoder.Update(deltaTime); - //cam.Update(deltaTime); - - tempCount += deltaTime; - if(tempCount > 1.0f) - { - //led = !led; - tempCount = 0.0f; - } - if(!isRegRead && g_core.GetUSBServer().GetStatus() == SER_STAT_RUNNING && timer.read() > 2.5f && ardu_cam_is_capture_finished()) { - //OV7725RegBuf * regBuf = new OV7725RegBuf(g_core); - //regBuf->ReadRegisters(); - //delete regBuf; //ardu_cam_print_debug(); isRegRead = true; } @@ -95,17 +75,35 @@ float disY = destY - srcY; float disX = destX - srcX; - float angleRadians = static_cast<float>(atan(static_cast<double>(disX / disY))); + float angleRadians = -1.0f * static_cast<float>(atan(static_cast<double>(disX / disY))); float angleDegrees = (angleRadians * (180.0f / PI)); /////////////////////////////////////// /////////////Calculate the offset: float centerPos = static_cast<float>(RESOLUTION_WIDTH / 2); - float offsetPercent = (static_cast<float>(centerLine[3]) - centerPos); - offsetPercent = offsetPercent / centerPos; + float offsetDegrees = ((srcX - centerPos) / centerPos) * SERVO_MAX_ANGLE; ////////////////////////////////////// + float totalAngleDegrees = (angleDegrees * 0.3f) + (offsetDegrees * 1.0f); + servo_set_angle(totalAngleDegrees); + + if(totalAngleDegrees > SERVO_MAX_ANGLE) + totalAngleDegrees = SERVO_MAX_ANGLE; + else if(totalAngleDegrees < -SERVO_MAX_ANGLE) + totalAngleDegrees = -SERVO_MAX_ANGLE; + + if(totalAngleDegrees < 0.0f) + { + motor_set_left_speed((MOTOR_DIFF_MIN_SPEED) + (1.0f - MOTOR_DIFF_MIN_SPEED) * ((SERVO_MAX_ANGLE - abs(totalAngleDegrees)) / SERVO_MAX_ANGLE)); + motor_set_right_speed(1.0f); + } + else + { + motor_set_right_speed((MOTOR_DIFF_MIN_SPEED) + (1.0f - MOTOR_DIFF_MIN_SPEED) * ((SERVO_MAX_ANGLE - abs(totalAngleDegrees)) / SERVO_MAX_ANGLE)); + motor_set_left_speed(1.0f); + } + /* //////// Steer Vehicle / Adjust Speed for Differential ////////// servo_set_angle((angleDegrees * -0.3f) + (offsetPercent * SERVO_MAX_ANGLE * 0.3f)); @@ -124,7 +122,7 @@ motor_set_right_speed((0.5) + (0.5) * ((0.366 - abs(angleRadians))/0.366)); motor_set_left_speed(1.0); } - + */ //char buf[20];