Silicon Laboratories SI4421 Manual do Utilizador descarregar pdf (Página 9)

RF WIRELESS FOUNDATION COURSE BOOK ONE

Rev. 0.1 9

Exercise 1—How to Set Up an EZLink Si4421 Module as a CW Transmitter

This example project modulates the output power of the transmitter IC according the state of the push button on

the EZLink main board:

 If the SW2 button is pressed then the output is modulated through the FSK pin of the transmitter by 1, the RC

LED will be illuminated.

 If the SW2 button is not pressed, the output is modulated through the FSK pin of the transmitter by 0 and the TR

LED will be illuminated.

To run this project on the EZLink Si4421 module, please follow the following steps:

1. Run Silicon Laboratories IDE and load the project from:

“C:\Silabs\SRW\RF_Basics_Lesson\Lesson2”.

2. Uncomment the “#define CW_TRANSMITTER_MODE” and comment the “#define CW_RECEIVER_MODE”

definition for compiling the source code as a transmitter.

3. Compile the project and program it into an EZLink module.

4. Disconnect the programmer from the board, then by pressing the SW2 button the RC LED should illuminate

instead of TR LED. For further testing please follow the steps in Exercise 2.

Figure 12. Lesson 2 Project in Silabs IDE

1. Open project

2. Select CW_TRANSMITTER_MODE

3. Compile the project

4. Connect to the programmer

5. Load to the MCU

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Sem comentários

Silicon Laboratories SI4421 Manual do Utilizador Página 9