Microprocessor systems

$6-$ I$2$C Based Display

$1.$In this task you are required to display time on a I$2$C based seven segment display. The time should at $00$:$00$

$($minutes$,$ seconds$)$ when the microcontroller is started and internal timing should be used to keep the time. You

may use millis function for this purpose.

In the simulator you should be using HT$16$K$33$ Backback $7-$segment display. This device has multiple commands

to control its behaviour and a system to setup output of the device. To initiate the device, you must send following

commands either in a single transmission or one by one to the device:

$0$x$21$: Turn on clock

$0$xE$?$: Set brightness $?$ should be replaced by the brightness value. Use $0$xEF for full brightness.

$0$x$81$: Enable display

In order to update the display, you should first send the starting section. The controller supports up to $16$ sections

each having $16$ segments in it$.$ However, in our device we have $5$ section, first and last two have $8$ segment digits

$(7-$segments $+.),$ middle section $($: sign$)$ only has $1$ segment at bit $1.$ After sending the starting section, without

ending the transmission, send $2$ bytes per section $(2$nd bytes do not matter as each section is $8$ bits$)$ to set their state.

This will allow you to control segments on each $7-$segment display. Once the data is written, end the transmission

to request device to apply your changes. If you want to change all sections at once, you need to send $0$ and then $10$

bytes to set the state of each section.

a$.$Draw your circuit using thinker card

b$.$write your program in c $++$ code. give me good answer $.$