pw-module/main.c

 /*
 * MAIN Generated Driver File
 * 
 * @file main.c
 * 
 * @defgroup main MAIN
 * 
 * @brief This is the generated driver implementation file for the MAIN driver.
 *
 * @version MAIN Driver Version 1.0.2
 *
 * @version Package Version: 3.1.2
*/

/*
© [2025] Microchip Technology Inc. and its subsidiaries.

    Subject to your compliance with these terms, you may use Microchip 
    software and any derivatives exclusively with Microchip products. 
    You are responsible for complying with 3rd party license terms  
    applicable to your use of 3rd party software (including open source  
    software) that may accompany Microchip software. SOFTWARE IS ?AS IS.? 
    NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS 
    SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT,  
    MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 
    WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, 
    INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY 
    KIND WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF 
    MICROCHIP HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE 
    FORESEEABLE. TO THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP?S 
    TOTAL LIABILITY ON ALL CLAIMS RELATED TO THE SOFTWARE WILL NOT 
    EXCEED AMOUNT OF FEES, IF ANY, YOU PAID DIRECTLY TO MICROCHIP FOR 
    THIS SOFTWARE.
*/
#include "mcc_generated_files/system/system.h"
#include <math.h>
#include "commons.h"
#include "proto.h"

static uint16_t   led1 = 0, led2 = 0, moisture = 0, light = 0;
static errors_t   retcode = SUCCESS;
static uint8_t    in_rx, cmd;
static bool       rx_over = false, update_sensor = false;
volatile bool tx_timed_out = false;

//==============================================================================
// Private Declarations
//==============================================================================
static void init();
static void read_adc(adc_channel_t channel, uint16_t* p_val);
static void convert_adc_lux();
static void show_error();

static void tmr_tx_cb();
static void tmr_sensor_cb();

//==============================================================================
// Public
//==============================================================================
/*=****************************************************************************/
int main(void)
{
    init();
    
    while(1)
    {
        if (RET_FAILURE(retcode))
            show_error();
        
        // Update sensor if it's time
        if (update_sensor)
        {
            update_sensor = false;
#if (HAS_MOISTURE == 1)
            read_adc(channel_ANC0, &moisture);
#endif
#if (HAS_LDR == 1)
            read_adc(channel_ANA0, &light);
#endif
        }
        
        retcode = uart_rx_byte(&in_rx);
        if (retcode == SUCCESS)
        {
            rx_over = byte_in(in_rx, &cmd, &led1, &led2);
            if (rx_over)
            {
                switch (cmd)
                {
                case GET_MODEL_CMD_ID:
                    // Wait for Master to stop writing
                      __delay_ms(DELAY_TO_REPLY);
                      retcode = send_model(MY_ID, MODEL);
                    break;
                    
                case GET_CMD_ID:
                    // Wait for Master to stop writing
                    __delay_ms(DELAY_TO_REPLY);
                    retcode = send_data(MY_ID, moisture, light);
                  break;
                    
                case SET_CMD_ID:
#if (HAS_LED == 1)
                    PWM3_LoadDutyValue(led1);
                    PWM4_LoadDutyValue(led2);
                    __delay_ms(DELAY_TO_REPLY);
                    retcode = send_error(MY_ID, SUCCESS);
#endif
                  break;
                  
                default:
                  retcode = UNSUPPORTED_CMD;
                  break;
                }
            }
        }
    }
    
    return 0;
}

//==============================================================================
// Private
//==============================================================================
/*=****************************************************************************/
static void init()
{
    SYSTEM_Initialize();
    INTERRUPT_GlobalInterruptEnable(); 
    INTERRUPT_PeripheralInterruptEnable(); 
    
    ADC_Initialize();

    // TMR callback
    TMR_TX_OverflowCallbackRegister(tmr_tx_cb);
    TMR_SENSOR_OverflowCallbackRegister(tmr_sensor_cb);
    
    // Initial variables and pins
    RS_MODE_SetLow();
    TMR_TX_Stop();
    tx_timed_out = false;
    
    DEBUG_SetHigh();
    __delay_ms(1000);
    DEBUG_SetLow();
}

/*=****************************************************************************/
static void read_adc(adc_channel_t channel, uint16_t* p_val)
{
    ADC_SelectChannel(channel);
    ADC_StartConversion();
    while(!ADC_IsConversionDone());
    *p_val = ADC_GetConversionResult();
}

/*=****************************************************************************/
static void show_error()
{
    uint16_t time = retcode * 100;
    
    while(1)
    {
        DEBUG_Toggle();
        
        for (uint16_t i = 0; i < time; ++i)
            __delay_ms(1);
    }
}

/*=****************************************************************************/
static void tmr_tx_cb()
{
    tx_timed_out = true;
}

/*=****************************************************************************/
static void tmr_sensor_cb()
{
    update_sensor = true;
}