**SMS Control** rev_03

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    - Project: **SMS Control**
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-12-05 23:08:04

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Develop a project utilizing the SIM900 GSM module */
    /* for sending and receiving SMS messages. Ensure the */
    /* SoftwareSerial interface on A0 and A1 is */
    /* configured for seamless communication and */
    /* implement basic command responses. */
/****** SYSTEM REQUIREMENT 2 *****/
    /* each time receive a new sms so increase pot value */
    /* of 5% */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SoftwareSerial.h>
#include <sim900.h> //https://github.com/nthnn
#include <X9C10X.h> //https://github.com/RobTillaart/X9C10X

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateOutputs();
void checkForSMS();
void increasePotValue(float percentage);

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t pot_X9C10X_CS_PIN_D2      = 2;
const uint8_t pot_X9C10X_INC_PIN_D3     = 3;
const uint8_t pot_X9C10X_UD_PIN_D4      = 4;

/***** DEFINITION OF Software Serial *****/
const uint8_t gsm_SIM900A_Serial_PIN_SERIAL_TX_A0       = A0;
const uint8_t gsm_SIM900A_Serial_PIN_SERIAL_RX_A1       = A1;
SoftwareSerial gsm_SIM900A_Serial(gsm_SIM900A_Serial_PIN_SERIAL_RX_A1, gsm_SIM900A_Serial_PIN_SERIAL_TX_A0);

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool    pot_X9C10X_CS_PIN_D2_rawData        = 0;
bool    pot_X9C10X_INC_PIN_D3_rawData       = 0;
bool    pot_X9C10X_UD_PIN_D4_rawData        = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float   pot_X9C10X_CS_PIN_D2_phyData        = 0.0;
float   pot_X9C10X_INC_PIN_D3_phyData       = 0.0;
float   pot_X9C10X_UD_PIN_D4_phyData        = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(pot_X9C10X_CS_PIN_D2,    OUTPUT);
    pinMode(pot_X9C10X_INC_PIN_D3,   OUTPUT);
    pinMode(pot_X9C10X_UD_PIN_D4,    OUTPUT);

    gsm_SIM900A_Serial.begin(9600);

    // Initialize SIM900 module
    if (gsm_SIM900A_Serial.available()) {
        gsm_SIM900A_Serial.println("AT"); // Test AT command
        delay(100);
    }
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    updateOutputs(); // Refresh output data
    checkForSMS(); // Check for incoming SMS
}

void updateOutputs()
{
    digitalWrite(pot_X9C10X_CS_PIN_D2, pot_X9C10X_CS_PIN_D2_rawData);
    digitalWrite(pot_X9C10X_INC_PIN_D3, pot_X9C10X_INC_PIN_D3_rawData);
    digitalWrite(pot_X9C10X_UD_PIN_D4, pot_X9C10X_UD_PIN_D4_rawData);
}

void checkForSMS()
{
    if (gsm_SIM900A_Serial.available()) {
        String sms = gsm_SIM900A_Serial.readString();
        if (sms.indexOf("NEW_SMS") != -1) { // Assuming "NEW_SMS" is part of the SMS content
            increasePotValue(5.0); // Increase pot value by 5%
        }
    }
}

void increasePotValue(float percentage)
{
    // Assuming the potentiometer position is managed by a variable
    static uint8_t currentPosition = 0; // Initialize current position
    uint8_t increment = (uint8_t)(currentPosition * (percentage / 100.0));
    currentPosition += increment; // Increase position
    if (currentPosition > 255) currentPosition = 255; // Limit to max value
    pot_X9C10X_INC_PIN_D3_rawData = currentPosition; // Update the raw data for the potentiometer
}

/* END CODE */