Running the demonstrations

STR91x demonstration software

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2.4

Demo applications

The following section provides a detailed description of each part of the demonstration.

Notes:

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In the demonstration, the core runs at HCLK = 96 MHz.

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Red LEDs: LD2, LD3, LD4 and LD5 are always blinking.

2.4.1

Calendar

The STR91x has an embedded Real Time Clock (RTC) which provides a set of continuously

running counters that can be used, with suitable software, to implement a clock-calendar

function. The counter values can be written to set the current time of the system.

This sub-menu is used to configure some miscellaneous functions such as time, date and

alarm.

Time

This sub-menu is divided in two items allowing the user to display or to adjust the current

time.

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Time Adjust: After the evaluation board is powered up for the first time, the user has to

select this sub-menu to change the default time (00:00:00) to the current time. Once

"Time Adjust" is selected, the first digit of the hour field is ready to be changed.

Pressing the "UP" button will display the current value plus one. Pressing the "DOWN"

button will display the previous digit value. After choosing the digit value press "SEL",

the cursor jumps automatically to the next digit. When all the time digits are set, the

"Calendar" menu is shown. Some digit values are limited to a range of values

depending on the field (hour, minute or seconds). The following message (with the

default time or the current time) is displayed on the LCD when this sub-menu is

selected:

●

Time Show: this item displays the current time or the default time. The following

message is displayed on the LCD when this sub-menu is selected:

To exit from this sub menu, press the UP/DOWN push buttons.

Date

This sub-menu is divided in two items allowing the user to display or to adjust the current

date.

●

Date Adjust: This item has to be selected after each power-up in order to set the

current date. The user is asked to fill the current date to be stored in the application

memory. The date is displayed on 8 digits: Dayname MM DD YYYY. The default date

HH:MM:SS

Time Adjust

HH:MM:SS

Time Show