#!/usr/bin/python
# -*- coding:utf-8 -*-

import smbus
import time
from pca9534d import PCA9534D

address = 0x78
busNumber = 1

bus = smbus.SMBus(busNumber)
str = ""

class expBoard:
    def __init__(self, addr, port):
        self.addr = addr
        self.bus = smbus.SMBus(port)
    def write_block_data(self, byte, array):
        self.bus.write_i2c_block_data(self.addr, byte, array)
    def write_data(self, value):
        self.bus.write_byte(self.addr, value)
    def read_data(self):
        self.bus.read_byte(self.addr)
    def read_nbytes_data(self, data, n):
        return self.bus.read_i2c_block_data(self.addr, data, n)
'''
def send_AT(expBoard):
    at = [65,84,13,10]
    hex_AT = [0x41,0x54,0xD,0xA]
    print("---> {}".format(str.join(chr(n) for n in at)))
    expBoard.write_block_data(0x00,at)
    time.sleep(0.7)
    rx = expBoard.read_nbytes_data(0x00, len("ATrrnOKrn"))
    print(rx)
    list = [chr(n) for n in rx]
'''

def send_Cz(expBoard):
    Cz = [0x1A]
    print("---> {}".format(str.join(chr(n) for n in Cz)))
    expBoard.write_block_data(0x00,Cz)
    time.sleep(0.7)
    rx = expBoard.read_nbytes_data(0x00, len("ATrrnOKrn"))
    print(rx)
    list = [chr(n) for n in rx]

def send_AT_command(expBoard, commandAT):
    print('Command:', commandAT)
    hex_list = [ord(c) for c in commandAT]
    hex_list.append(ord('\r'))
    hex_list.append(ord('\n'))
    #print('Hex list:', hex_list)
    expBoard.write_block_data(0x0,hex_list)
    #print("---> {}".format(str.join(chr(n) for n in hex_list)))
    print("--->", hex_list)
    time.sleep(0.7)
    rx = expBoard.read_nbytes_data(0x00, len(hex_list)+5)
    list = [chr(n) for n in rx]
    rxwoniv = [x for x in rx if x >= 32]
    listwoniv = [chr(n) for n in rxwoniv]
    print("<---", rx)
    print("Resposta:", str.join(listwoniv))
    return hex_list


def send_data(expBoard,data):
    hex_data = [ord(char) for char in data]
    print('Sending:',hex_data)
    expBoard.write_block_data(0x0,hex_data)


def send_sms(expBoard, num, msg):
    send_AT_command(expBoard,'AT')
    send_AT_command(expBoard,'AT+CFUN=1')
    send_AT_command(expBoard,'AT+CMGF=1')
    send_AT_command(expBoard,'AT+CMGS="'+num+'"')
    send_data(expBoard,msg)
    send_Cz(expBoard)


def main():
    pca9534d = PCA9534D(i2c_bus=1, device_address=0x20)
    pca9534d.set_rst_low()

    i2c_bus = expBoard(address, busNumber)
    i2c_bus.write_data(123) # reset module
    time.sleep(0.7)

    i2c_bus.write_data(16) # set baudrate to 57600
    time.sleep(0.1)

    #send_AT(i2c_bus)
    #send_Cz(i2c_bus)
    #send_AT_command(i2c_bus,"AT")
    
    while True:
        cmd=input("Enter command: ")
        if cmd == 'q':
            print("DEW :D")
            break

        elif cmd == 'Cz':
            send_Cz(i2c_bus)

        elif cmd == 'sM':
            print('Sending message')
            num = input("Telephone number: ")
            msg = input("Message: ")
            send_sms(i2c_bus,num,msg)

        else:
            send_AT_command(i2c_bus,cmd)
        time.sleep(0.5)    #necesitan, no la verda

if __name__ == "__main__":
    main()