单相逆变双极性PI控制，给出基于DSP的代码

单相逆变器双极性PI控制的代码基于DSP实现，具体代码如下（仅供参考）：

#include "DSP2833x_Device.h"      // DSP2833x Headerfile Include File
#include "DSP2833x_Examples.h"    // DSP2833x Examples Include File

// Define the PI parameters
#define KP_VOLTAGE 0.1
#define KI_VOLTAGE 0.001
#define KP_CURRENT 0.1
#define KI_CURRENT 0.001

// Define the voltage and current variables
float voltage_ref, voltage_meas, voltage_error, voltage_integral;
float current_ref, current_meas, current_error, current_integral;

// Define the PI output variables
float voltage_output, current_output;

// Define the ADC reading variables
Uint16 adc_voltage_reading, adc_current_reading;

// Define the PWM duty cycle variables
Uint16 pwm_voltage_duty, pwm_current_duty;

// Define the main function
void main()
{
    // Initialize system
    InitSysCtrl();

    // Initialize ADC
    InitAdc();

    // Initialize PWM
    InitPwm();

    // Enable global interrupts
    EINT;

    // Initialize voltage PI controller
    voltage_integral = 0;

    // Initialize current PI controller
    current_integral = 0;

    // Main loop
    while(1)
    {
        // Read voltage ADC
        adc_voltage_reading = ReadAdcVoltage();

        // Convert ADC reading to voltage
        voltage_meas = ConvertAdcVoltage(adc_voltage_reading);

        // Calculate voltage error
        voltage_error = voltage_ref - voltage_meas;

        // Calculate voltage integral
        voltage_integral += voltage_error;

        // Calculate voltage output
        voltage_output = KP_VOLTAGE * voltage_error + KI_VOLTAGE * voltage_integral;

        // Limit voltage output
        voltage_output = LimitPwmDuty(voltage_output);

        // Set PWM duty cycle for voltage
        SetPwmVoltageDuty(voltage_output);

        // Read current ADC
        adc_current_reading = ReadAdcCurrent();

        // Convert ADC reading to current
        current_meas = ConvertAdcCurrent(adc_current_reading);

        // Calculate current error
        current_error = current_ref - current_meas;

        // Calculate current integral
        current_integral += current_error;

        // Calculate current output
        current_output = KP_CURRENT * current_error + KI_CURRENT * current_integral;

        // Limit current output
        current_output = LimitPwmDuty(current_output);

        // Set PWM duty cycle for current
        SetPwmCurrentDuty(current_output);
    }
}

// Function to read voltage ADC
Uint16 ReadAdcVoltage()
{
    // TODO: Implement ADC reading code for voltage
}

// Function to convert voltage ADC reading to voltage
float ConvertAdcVoltage(Uint16 adc_voltage_reading)
{
    // TODO: Implement ADC voltage conversion code
}

// Function to read current ADC
Uint16 ReadAdcCurrent()
{
    // TODO: Implement ADC reading code for current
}

// Function to convert current ADC reading to current
float ConvertAdcCurrent(Uint16 adc_current_reading)
{
    // TODO: Implement ADC current conversion code
}

// Function to limit PWM duty cycle
float LimitPwmDuty(float duty_cycle)
{
    // TODO: Implement PWM duty cycle limiting code
}

// Function to set PWM duty cycle for voltage
void SetPwmVoltageDuty(float duty_cycle)
{
    // TODO: Implement PWM voltage duty cycle setting code
}

// Function to set PWM duty cycle for current
void SetPwmCurrentDuty(float duty_cycle)
{
    // TODO: Implement PWM current duty cycle setting code
}

需要注意的是，以上代码中的TODO注释需要根据实际情况进行实现。同时，代码中需要实现ADC、PWM等外设的初始化和配置。