File content as of revision 7:f4e248182d31:

/* File inclusion */
#include "mbed.h"
#include "stdint.h"
#include "QEI.h"
#include "project_defines.h"
#include "buttons.h"
#include "encoder_interface.h"
#include "nextion_interface.h"
#include "pressure_sensors.h"
#include "ventilator.h"


/* Global variable definition */

volatile uint8_t read_pressure_sensors_flag;
volatile uint8_t pressure_sensor_display_update_flag;
volatile uint8_t pressure_sensor_waveform_update_flag;

uint16_t volume_setpoint = VOLUME_SETPOINT_VALUE_DEFAULT;
uint16_t volume_measured = 480;
uint8_t resp_frequency = RESP_FREQUENCY_VALUE_DEFAULT;
float   inspiration_time = INSPIRATION_TIME_VALUE_DEFAULT;
float   expiration_time = EXPIRATION_TIME_VALUE_DEFAULT;
uint8_t pressure_measured = 16;
uint8_t gas_input = AIR_INPUT;


Main_Screen_State_t main_screen_state = MAIN_SCREEN_DEFAULT_STATE;
uint8_t first_time_in_state = 1;

/* Function definition */
void Nextion_Encoder_Interaction(void){

 switch(main_screen_state){
            case Main_Screen_Cursor_Disable:
                if(Get_Button_Press(1 << ENTER_SW)){
                    rotary_encoder.reset();
                    main_screen_state = Main_Screen_Cursor_Enable;
                }
                
                break;  
            
            case Main_Screen_Cursor_Enable:
                if(first_time_in_state){
                    first_time_in_state = 0;
                    Parameter_Selection_Box_Update();
                }else if(parameter_selection_index_change_flag){
                    parameter_selection_index_change_flag = 0; 
                    Parameter_Selection_Box_Update();
                }else{
                    //Does nothing
                }
                
                if(Get_Button_Press(1 << ENTER_SW)){
                    main_screen_state = (Main_Screen_State_t)(2 + parameter_selection_index);
                    first_time_in_state = 1;
                }
                
                break;         
            
            
            case Main_Screen_Volume_Setpoint_Adjust:
                if(first_time_in_state){
                    first_time_in_state = 0;
                    nextion_display.printf("t6.pco=%d", ADJUST_COLOR); // Change font color
                    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff);
                   // pc.printf("t6.pco=%d\n\r", ADJUST_COLOR); // Change font color
                   // pc.printf("%c%c%c\n\r", 0xff, 0xff, 0xff);
                    Volume_Setpoint_Display_Update();
                }else if(volume_setpoint_index_change_flag){
                    volume_setpoint_index_change_flag = 0; 
                    Volume_Setpoint_Display_Update();
                }else{
                    //Does nothing
                }
                
                if(Get_Button_Press(1 << ENTER_SW)){
                    main_screen_state = Main_Screen_Cursor_Disable;
                    first_time_in_state = 1;
                    Volume_Setpoint_Fix();
                    Parameter_Selection_Box_Remove();
                }
                
                break;
 
            case Main_Screen_Resp_Frequency_Adjust:
                if(first_time_in_state){
                    first_time_in_state = 0;
                    nextion_display.printf("t7.pco=%d", ADJUST_COLOR); // Change font color
                    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff);
                   // pc.printf("t7.pco=%d\n\r", ADJUST_COLOR); // Change font color
                   // pc.printf("%c%c%c\n\r", 0xff, 0xff, 0xff);
                    Resp_Frequency_Display_Update();
                }else if(resp_frequency_index_change_flag){
                    resp_frequency_index_change_flag = 0; 
                    Resp_Frequency_Display_Update();
                }else{
                    //Does nothing
                }
                
                if(Get_Button_Press(1 << ENTER_SW)){
                    main_screen_state = Main_Screen_Cursor_Disable;
                    first_time_in_state = 1;
                    Resp_Frequency_Fix();
                    Parameter_Selection_Box_Remove(); 
                }
                
                break;         
            
            
            case Main_Screen_I_E_Ratio_Adjust:
                if(first_time_in_state){
                    first_time_in_state = 0;
                    nextion_display.printf("t8.pco=%d", ADJUST_COLOR); // Change font color
                    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff);
                    //pc.printf("t8.pco=%d\n\r", ADJUST_COLOR); // Change font color
                   // pc.printf("%c%c%c\n\r", 0xff, 0xff, 0xff);
                    I_E_Ratio_Display_Update();
                }else if(i_e_ratio_index_change_flag){
                    i_e_ratio_index_change_flag = 0; 
                    I_E_Ratio_Display_Update();
                }else{
                    //Does nothing
                }
                
                if(Get_Button_Press(1 << ENTER_SW)){
                    main_screen_state = Main_Screen_Cursor_Disable;
                    first_time_in_state = 1;
                    I_E_Ratio_Fix();
                    Parameter_Selection_Box_Remove();
                }
                
                break; 
                
            default:
                break;
                
        }   
 }
 
 
 void Nextion_Update_Sensor_Values(void){
    
    static float previous_pressure_01_psi = 0, previous_pressure_02_psi = 0;
    static float previous_diff_pressure_psi = 0;
    float delta;
    
    /* Check if anu value has change in a meningful way */
    delta = pressure_01_psi - previous_pressure_01_psi;
    if((delta > PRESSURE_DISPLAY_THRESHOLD) || (delta < -PRESSURE_DISPLAY_THRESHOLD)){
        Pressure_01_Display_Update();
    } 
    
    delta = pressure_02_psi - previous_pressure_02_psi;
    if((delta > PRESSURE_DISPLAY_THRESHOLD) || (delta < -PRESSURE_DISPLAY_THRESHOLD)){
        Pressure_02_Display_Update();
    }
    
    delta = diff_pressure_psi - previous_diff_pressure_psi;
    if((delta > PRESSURE_DISPLAY_THRESHOLD) || (delta < -PRESSURE_DISPLAY_THRESHOLD)){
        Diff_Pressure_Display_Update();
    }    
    
    
    /* Update the previous values */
    previous_pressure_01_psi = pressure_01_psi;
    previous_pressure_02_psi = pressure_02_psi;
    previous_diff_pressure_psi = diff_pressure_psi;
 
 }
 
 
  void Nextion_Update_Waveform_Values(void){
 
    uint8_t pressure_graph_val;
    
    /* Plot pressure 01 in a 0 to 1 PSI scale */
    pressure_graph_val = (uint8_t)(pressure_01_psi * 128);
    nextion_display.printf("add 10,0,%d", pressure_graph_val);
    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff);
    
    /* Plot pressure 02 in a 0 to 1 PSI scale */
    pressure_graph_val = (uint8_t)(pressure_02_psi * 128);
    nextion_display.printf("add 11,0,%d", pressure_graph_val); 
    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff); 
    
    /* Plot differential pressure in a -1 PSI to 1 PSI scale */
    pressure_graph_val = 64 + (uint8_t)(diff_pressure_psi * 64);
    nextion_display.printf("add 1,0,%d", pressure_graph_val);
    nextion_display.printf("%c%c%c", 0xff, 0xff, 0xff);  
 
  }