This example shows the receiving of LoRa P2P data
The example is developed on the basis of standard firmware, and the added code is in the comment range of /* User Code */, /* End User Code */.
The example implements the function of receiving LoRa P2P data，and displays RSSI, SNR, data content and it's length.
Example：ret_code = rui_lorap2p_set_work_mode(1)
The following parameters must be configured in the send content:
1. Frequency
Sets the channel frequency.
Range: 150000000HZ - 960000000HZ （150MHz - 960MHz）
Example：uint32_t Frequency = 868100000
2. Spreading Factor
Sets the spreading factor.
Range: 7 - 12
Example：uint8_t Spreadfact = 7
3. Bandwidth
Sets the bandwidth.
Frequencies: 0: 125 kHz, 1: 250 kHz, 2: 500 kHz
Example：uint8_t Bandwidth = 0
4. Coding Rate
Sets the coding rate.
Options: 1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8
Example：uint8_t Codingrate = 1
5. Preamble Length
Sets the preamble length.
Range: 5 - 65535
Example：uint16_t Preamlen = 8
6. TX (Transmission) Power
Sets the TX (Transmission Power).
Range: 0 - 20 dBm
Example：uint8_t Powerdbm = 20