# L6 - Program activare  LED RGB cu SMS
# Dupa alimentare, modemul GSM are nevoie de conectare la retea.Blink 3 secunde.
# Un SMS cu 1 aprinde LED rosu
# Un SMS cu 2 aprinde LED verde
# Un SMS cu 3 aprinde LED albastru
# Un SMS cu 0 stinge tot
# Nu se verifica numarul de telefon

import machine
import utime

ser = machine.UART(1,9600)   # Pico Tx este la pin6, Rx este la pin 7
ledred = machine.Pin(6, machine.Pin.OUT)       # pin 9 ,LED semnalizare OK
ledgreen = machine.Pin(16, machine.Pin.OUT)    # pin 21 , nefolosit inca

# LED RGB de putere conectat cu ULN2803 alimentat cu LiION bat 4V-dioda SI
blue = machine.Pin(18, machine.Pin.OUT)        # pin 24
red = machine.Pin(19, machine.Pin.OUT)         # pin 25
green = machine.Pin(20, machine.Pin.OUT)       # pin 26

green.off()       # stinse la inceput
red.off()
blue.off()
ledred.on()       # stins
ledgreen.on()     # stins

#utime.sleep(30)   # interval conectare modem GSM pt. main only

def send_at(command):           # trimite comanda AT
    ser.write(command + "\r\n")
    utime.sleep(1)              # acoperire timp procesare locala
    response = ser.read()
    return response

send_at(b'AT')            # start modem GSM
send_at(b'AT+CMGF=1')     # Setare mod text pentru SMS
send_at(b'AT+CPMS="SM"')  # selectare SIM ca element de stocare
# Buclă principală pentru a asculta SMS-uri
while True:
    ledred.off()
    response = send_at(b'AT+CMGL="ALL"')  # Listați toate SMS-urile
    #print(response)
    if b'+CMGL:' in response:
        # 
        index = response.index(b'+CMGL:')
        sms_info = response[index:]
        sms_lines = sms_info.split(b'\r\n')  # separa in termenii unui sir
        
        if len(sms_lines) >= 4:
            sms_text = sms_lines[3].decode('utf-8')
            phone_number = sms_lines[2].decode('utf-8')
            #Listari de test
            print(response)
            print(sms_lines[0])  # nr telefon+data si ora
            print(sms_lines[1])  # mesajul
            print(sms_lines[2])  # b''
            if sms_lines[1] ==  b'1':
                blue.off()   # aprind red
                red.on()
                green.off()
            
            if sms_lines[1] ==  b'2':
                blue.off()   # aprind
                red.off()
                green.on()
                
            if sms_lines[1] ==  b'3':
                blue.on()   # aprind blue
                red.off()
                green.off()             
            
            if sms_lines[1] == b'0':
                blue.off()   # sting tot
                red.off()
                green.off()
                
        # Sterg sms citit
        sms_index = sms_lines[0].decode('utf-8').split(',')[0].split(':')[-1].strip()
        send_at(f'AT+CMGD={sms_index}')
    ledred.on()     # led semnalizare stare activa   
    utime.sleep(1)  #