Software description

AN2957

12/21

Doc ID 15550 Rev 2

3

Software description

3.1

Introduction

The software provided with this application note enables the user to send all RC5

instructions to all RC5 receiver devices. It contains an RC5 driver with functions and

software flags.

The software is designed to avoid frame collisions; an idle time is inserted between two

frames with a specific width (50 bits).

The application uses 5 peripherals:

●

IRTIM: (IR interface with timers) generates the IR signal using TIM2 and TIM3

●

TIM2: (Timer2) provides the Carrier signal with a frequency of 36 kHz

●

TIM3: (Timer3) provides the main signal to be sent (RC5 Frame)

●

GPIO: (General purpose I/O) provides the I/O to be connected to the buttons of the the

remote control

●

CLK: (Clock controller) enables the clocks and provides the correct clock frequency for

the timers