Q$2($a$)$ An LED is directly connected to the digital pin $6$ of an ESP $32$ microcontroller that based on sinking mode. While a push button switch is connected to the digital pin $7$ of the microcontroller that based on pull$-$down resistor concept so that the logic signal is low when the push button switch is released.

$($i$)$ Sketch a schematic for the microcontroller that connected to the LED and the push button.

$(6$ marks$)$

$($ii$)$ Write a complete C $-$statement code in void setup $()$ subroutine for relevant configurations.

$(2$ marks$)$

$($iii$)$ Write a complete C$-$statement code in void loop $()$ subroutine for controlling the LED based on the push button switch state, i$.$e$.$ when the push button switch is released, the LED will be turned off, and vice versa.

$(6$ marks$)$