/*
 -----------------------ESP32 Pins-------------------------------
================================================================= 
 Pin         Used   App         Pin         Used   App
=================================================================
 GPIO-36(SVP)no                 GPIO-23     yes    MODEM_POWER_ON
 GPIO-39(SVN)no                 GPIO-22     yes    I2C_SCL_2
 GPIO-34     yes    Vibration   GPIO-01(TX) no
 GPIO-35     yes    Battery     GPIO-03(RX) no
 GPIO-32     no                 GPIO-21     yes    I2C_SDA_2
 GPIO-33     no                 GPIO-19     yes    I2C_SCL
 GPIO-25     no                 GPIO-18     yes    I2C_SDA
 GPIO-26     yes    MODEM_RX    GPIO-05     yes    MODEM_RST
 GPIO-27     yes    MODEM_TX    GPIO-04     yes    MODEM_PWKEY
 GPIO-14     yes    nex_RX      GPIO-0      yes    gpsRXPin
 GPIO-12     no                 GPIO-02     no
 GPIO-13     yes    nex_TX      GPIO-15     yes    gpsTXPin
=================================================================
 */