This is an old revision of the document!
4. Exercise: Packet Transmission
Most protocol in communication networks are packet oriented. To send a packet, all user data stored in the TX FIFO will be send. To store data in TX FIFO, function cc1200_reg_write will be used. As address parameter the address 0x3F will be provided and the data to store. After the TX FIFO has been filled. The CC1200 has to be switched in sending mode.
In sending mode, CC1200 will prepend the data to send with a programmable preamble and a sync word. After the data of the TX FIFO has been sent, an optional CRC will be calculated and also been sent. After the packet has been sent, CC1200 will go back to idle mode. The mode to enter after sending a packet can be changed by programming the RFEND_CFG0 register.
The aim of this exercise is to send fixed length packets and variable length packets.
Requirements
This task requires
- a ready BeagleBone Black equipped with the CC1200
- one TI Development Kit for the CC1200
- Smart RF Studio.
