File content as of revision 0:8a6003b8bb5b:

#include <mbed.h>
#include "rtos.h"
#include "Periphery/SupportSystem.h"
#include "Misc/SystemTimer.h"
#include "Threads/MachineDirectionControl.h"

#define PI 3.14159265

Serial serialMinnow(p13, p14);
PwmOut drivePWM(p22);
PwmOut steerPWM(p21);
I2C i2c(p9, p10);

DigitalOut heartbeatLED(LED1);
DigitalOut buttonLED(LED2);
DigitalOut redlightLED(LED3);

DigitalIn buttonOne(p25);
DigitalIn buttonTwo(p26);
DigitalIn buttonThree(p29);
DigitalIn buttonFour(p30);

IMU_RegisterDataBuffer_t *IMU_registerDataBuffer;
RadioDecoder_RegisterDataBuffer_t *RadioDecoder_registerDataBuffer;

uint32_t pulse_duration_drive_pwm_current, pulse_duration_drive_pwm_last;

// Queues von der Bahnplanung
Queue<float, 2> quadrature_queue;
Queue<float, 2> machine_direction_queue;
float steering_angle_minnow_queue;
float velocity_minnow_queue;


// Queues von dem Maussensor
Queue<float, 2> imu_queue_velocity;
Queue<float, 2> imu_queue_steering_angle;
float steering_angle_imu_queue;
float velocity_imu_queue;


// Variablen von der Trajektorienplanung

float velocity_set = 0, steering_angle_set = 0;

// Variablen für die Längsregelung
float velocity_current = 0, velocity_last = 0;


// Variablen für die Querregelung
float steering_angle_current = 0, steering_angle_last = 0;

uint8_t timer_steering_angle_sampling_time = 0.01;

float q_Kp = 8.166343211;
float q_Ki = 18.6661236;
float feed_forward_control_factor = 13.37091452;
float q_esum = 0;
float feed_forward = 0;
float q_Ki_sampling_time = q_Ki * timer_steering_angle_sampling_time;
float q_PI_controller, q_PWM, q_e, q_output;

// Variablen für die Querregelung Ende

void serial_thread(void const *args) {
    while (true) {
        Thread::wait(100);
    }
}

void machine_direction_control(void const *args) {
    osEvent velocity_set_event = machine_direction_queue.get(0);
    if (velocity_set_event.status == osEventMessage) {
        velocity_set = *(float*)velocity_set_event.value.p;
    }
    
    osEvent velocity_current_event = imu_queue_velocity.get(0);
    if (velocity_current_event.status == osEventMessage) {
        velocity_current = *(float *)velocity_current_event.value.p;
    }
    
    drivePWM.pulsewidth_us(1800);
}

void quadrature_control(void const *args) {
    osEvent steering_angle_set_event = quadrature_queue.get(0);
    if (steering_angle_set_event.status == osEventMessage) {
        steering_angle_set = *(float *)steering_angle_set_event.value.p;
    }
    
    osEvent steering_angle_current_event = imu_queue_steering_angle.get(0);
    if (steering_angle_current_event.status == osEventMessage) {
        steering_angle_current = *(float *)steering_angle_current_event.value.p;
    }
    
    q_e = steering_angle_set - steering_angle_current;
    q_esum = q_esum + q_e;
    
    feed_forward = steering_angle_set * feed_forward_control_factor;
    q_PI_controller = q_Kp*q_e + q_Ki_sampling_time * q_esum;

    q_output = feed_forward + q_PI_controller;

    if(q_output > 500){q_output = 500;}           // evtl Begrenzung schon auf z.b. 300/ -300 stellen (wegen Linearität)
    if(q_output < -500){q_output = - 500;}

    q_PWM = 1500 + q_output;
    
    steerPWM.pulsewidth_us(q_PWM);
}

int main() {
    serialMinnow.baud(115200);

    drivePWM.period_ms(20);
    steerPWM.period_ms(20);

    SystemTimer *millis = new SystemTimer();

    SupportSystem *supportSystem = new SupportSystem(0x80, &i2c);

    Thread machineDirectionControl(test_thread);
    
    RtosTimer machine_direction_control_timer(machine_direction_control);
    RtosTimer quadrature_control_timer(quadrature_control);

    // Konfiguration AMF-IMU
    // [0]: Conversation Factor
    // [1]: Sensor Position X
    // [2]: Sensor Position Y
    // [3]: Sensor Position Angle
    float configData[4] = {0.002751114f, 167.0f, 0.0f, 269.0f};

    supportSystem->writeData(SUPPORT_SYSTEM_REGISTER_ADDRESS_IMU_CONVERSION_FACTOR, configData, sizeof(float)*4);

    // Flag setzen
    uint8_t command = 1<<3;
    supportSystem->writeData(SUPPORT_SYSTEM_REGISTER_ADDRESS_IMU_COMMAND, &command, sizeof(uint8_t));
    
    bool timer_started = false;

    wait(0.1);
    
    velocity_minnow_queue = 12.0;
    quadrature_queue.put(&velocity_minnow_queue);

    while(true) {
        IMU_registerDataBuffer = supportSystem->getImuRegisterDataBuffer();
        RadioDecoder_registerDataBuffer = supportSystem->getRadioDecoderRegisterDataBuffer();

        for(uint8_t i=0; i<3; i++) {
            serialMinnow.printf("RadioDecoder - Ch[%d] Valid:      %d\r\n",i,RadioDecoder_registerDataBuffer->channelValid[i]);
            serialMinnow.printf("RadioDecoder - Ch[%d] ActiveTime: %d\r\n",i,RadioDecoder_registerDataBuffer->channelActiveTime[i]);
            serialMinnow.printf("RadioDecoder - Ch[%d] Percentage: %d\r\n",i,RadioDecoder_registerDataBuffer->channelPercent[i]);
        }

        uint16_t rc_percentage = RadioDecoder_registerDataBuffer->channelActiveTime[0];
        uint8_t rc_valid = RadioDecoder_registerDataBuffer->channelValid[0];
        
        uint16_t drive_percentage = RadioDecoder_registerDataBuffer->channelActiveTime[1];
        uint8_t drive_valid = RadioDecoder_registerDataBuffer->channelValid[1];

        uint16_t steer_percentage = RadioDecoder_registerDataBuffer->channelActiveTime[2];
        uint8_t steer_valid = RadioDecoder_registerDataBuffer->channelValid[2];


        if (rc_percentage > (uint16_t) 1800 && rc_valid != 0) {
            // oben => Wettbewerb
            heartbeatLED = true;
            buttonLED = false;
            redlightLED = false;
            supportSystem->setLightManagerRemoteLight(false, true);
            if (!timer_started) {
                timer_started = true;
                machine_direction_control_timer.start(10);
                quadrature_control_timer.start(10);
            }
        } else if (rc_percentage > (uint16_t) 1200 && rc_valid != 0) {
            // unten => RC-Wettbewerb
            heartbeatLED = false;
            buttonLED = false;
            redlightLED = true;
            supportSystem->setLightManagerRemoteLight(true, true);
            if (drive_valid) {
                drivePWM.pulsewidth_us(drive_percentage);
            }
            if (steer_valid) {
                steerPWM.pulsewidth_us(steer_percentage);
            }
            if (timer_started) {
                timer_started = false;
                machine_direction_control_timer.stop();
                quadrature_control_timer.stop();
            }
        } else if (rc_percentage > (uint16_t) 800 && rc_valid != 0) {
            // mitte => RC-Training
            heartbeatLED = false;
            buttonLED = true;
            redlightLED = false;
            supportSystem->setLightManagerRemoteLight(true, true);
            if (drive_valid) {
                drivePWM.pulsewidth_us(drive_percentage);
            }
            if (steer_valid) {
                steerPWM.pulsewidth_us(steer_percentage);
            }
            if (timer_started) {
                timer_started = false;
                machine_direction_control_timer.stop();
                quadrature_control_timer.stop();
            }
        }
        
        velocity_imu_queue = IMU_registerDataBuffer->velocityXFilteredRegister;
        imu_queue_velocity.put(&velocity_imu_queue);
        
        float radius = IMU_registerDataBuffer->velocityXFilteredRegister/IMU_registerDataBuffer->velocityAngularFilteredRegister;
        
        steering_angle_imu_queue = atan(0.205/radius)*180/PI;
        imu_queue_steering_angle.put(&steering_angle_imu_queue);
        

        serialMinnow.printf("%f\r\n\r\n", IMU_registerDataBuffer->sensorPositionAngleRegister);
        Thread::wait(50);
    }
}