Ligne 7 : |
Ligne 7 : |
| | | |
| As the kit contains contains two Pico microcontroller we will be able to create the "Data Emitter" on the CanSat as well as the Data Receiver at the ground station. | | As the kit contains contains two Pico microcontroller we will be able to create the "Data Emitter" on the CanSat as well as the Data Receiver at the ground station. |
− |
| |
− | In this simple example:
| |
− | # The '''Data Emitter''' will send a message and wait 500ms for a response (ACK).
| |
− | # The '''Data Receiver''' will receive the message.
| |
− | # The '''Data Receiver''' will send a ACK reply.
| |
| | | |
| [[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00.jpg|640px]] | | [[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00.jpg|640px]] |
| | | |
− | As we will see, there are 2 key items to be highlighted: | + | As we will see, there are 3 key items to be highlighted: |
| # The frequency must be identical in the emitter and the receiver (eg: 433.1 MHz in this example). | | # The frequency must be identical in the emitter and the receiver (eg: 433.1 MHz in this example). |
| # The encryption key must be identical on the both side. | | # The encryption key must be identical on the both side. |
| + | # Node_IDs used to allow ACK exchange between nodes |
| + | |
| + | [[Fichier:ENG-CANSAT-PICO-RFM69HCW-TEST-00a.jpg|640px]] |
| + | |
| + | In this simple example: |
| + | # The '''Data Emitter''' (CanSat) will send a message and wait 500ms for a response (ACK). |
| + | # The '''Data Receiver''' (BaseStation) will receive the message. |
| + | # The '''Data Receiver''' (BaseStation) will send a ACK reply. |
| | | |
| == Installing the RFM69 library == | | == Installing the RFM69 library == |