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| network_protocol_programming_lab:15.3_2_exercise [2021/04/19 12:07] – [Requirements] rathke | network_protocol_programming_lab:15.3_2_exercise [2021/04/19 12:38] (current) – [Requirements] rathke | ||
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| * a ready BeagleBone Black equipped with the CC1200. | * a ready BeagleBone Black equipped with the CC1200. | ||
| - | * 5C attached to a second BeagleBone Black equipped with the CC1200. | + | * 4C attached to a second BeagleBone Black equipped with the CC1200. |
| ===== Tasks ===== | ===== Tasks ===== | ||
| * connect the first BeagleBone Black to your computer and install, execute 4C. | * connect the first BeagleBone Black to your computer and install, execute 4C. | ||
| - | * open RX Synchronous Serial | + | * open "RX Packet |
| - | * press the button “Packet RX” in the lower window. Some registers in the register view will change their value | + | |
| * in the option '' | * in the option '' | ||
| * now, choose an appropriate length of the '' | * now, choose an appropriate length of the '' | ||
| * export all registers to a file. This means 208 registers must be exported. | * export all registers to a file. This means 208 registers must be exported. | ||
| - | * connect | + | * login to the second |
| - | * copy the export file from SmartRF Studio | + | * copy the export file from 4C to the BeagleBone Black |
| * import the export file into your program and initialize the registers according the values of the export file. | * import the export file into your program and initialize the registers according the values of the export file. | ||
| * verify that the registers have been written correctly. | * verify that the registers have been written correctly. | ||
| * Read chapter 8 about the packet handling of the [[http:// | * Read chapter 8 about the packet handling of the [[http:// | ||
| - | * Bring SmartRF Studio in “Packet | + | * Bring 4C “TX Packet Mode", change the '' |
| * start the transmitter. At the receiver, the BeagleBone Black, You should now receive the packets. | * start the transmitter. At the receiver, the BeagleBone Black, You should now receive the packets. | ||
| If you are able to receive packets in fixed length mode, the next step will be to receive packets in variable length mode: | If you are able to receive packets in fixed length mode, the next step will be to receive packets in variable length mode: | ||
| - | * go back to SmartRF Studio | + | * go back to 4C and change the '' |
| * look, which registers have been changed. | * look, which registers have been changed. | ||
| * modify the changed registers in your program. You do not need to reexport the complete registers. | * modify the changed registers in your program. You do not need to reexport the complete registers. | ||
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| ===== Hints ===== | ===== Hints ===== | ||
| - | * keep in mind, that SmartRF Studio | + | * keep in mind, that 4C transmitter will add a CRC to the packet. |
| * the CC1200 at the receiver is programmed to add a packet status in the RX FIFO | * the CC1200 at the receiver is programmed to add a packet status in the RX FIFO | ||
| * in variabel packet length mode the size of the received packet is limited. Packets larger than that limit will be discarded. | * in variabel packet length mode the size of the received packet is limited. Packets larger than that limit will be discarded. | ||
| + | * you have to adjust the packet mode bits in register PKT_CFG0 and the PTK_LEN register by yourself. | ||
