Last modified by Bei Jinggeng on 2022/12/19 11:05
<
From version < 7.3 >
edited by Xiaoling
on 2022/09/26 11:27
To version < 7.4 >
edited by Xiaoling
on 2022/09/26 11:34
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... ... @@ -1,80 +1,85 @@
1 -= Overview: =
1 += 1.  Overview: =
2 2  
3 +
3 3  This instruction is for how to use Peer to Peer firmware in LA66.
4 4  
5 5  
6 -= Firmware Location: =
7 += 2.  Firmware Location: =
7 7  
9 +
8 8  Click[[ here>>https://www.dropbox.com/sh/dq03kkfdrqnhy66/AACpHIcKYMa4o1IySKtVoeENa?dl=0]] to download the firmware and update it to LA66 according to the instruction for different boards.
9 9  
10 10  
11 -= How to use? =
13 += 3.  How to use? =
12 12  
13 13  
14 14  
15 -== 1. AT command： ==
17 +== 3.1  AT command： ==
16 16  
17 17  
18 -(% style="color:blue" %)**1) Lora parameter configuration:**
20 +(% style="color:blue" %)**1). Lora parameter configuration:**
19 19  
20 -AT+FRE: Get or Set TX and RX frequency
21 21  
22 -AT+BW: Get or Set TX and RX BandWidth
23 +AT+FRE:  Get or Set TX and RX frequency
23 23  
24 -AT+SF: Get or Set TX and RX Spreading Factor
25 +AT+BW:  Get or Set TX and RX BandWidth
25 25  
26 -AT+POWER: Get or Set Tx Power Range
27 +AT+SF:  Get or Set TX and RX Spreading Factor
27 27  
28 -AT+CRC: Get or Set TX and RX CRC Type
29 +AT+POWER:  Get or Set Tx Power Range
29 29  
30 -AT+HEADER: Get or Set TX and RX Header Type
31 +AT+CRC:  Get or Set TX and RX CRC Type
31 31  
32 -AT+CR: Get or Set TX and RX Header Type
33 +AT+HEADER:  Get or Set TX and RX Header Type
33 33  
34 -AT+IQ: Get or Set TX and RX InvertIQ
35 +AT+CR:  Get or Set TX and RX Header Type
35 35  
36 -AT+PREAMBLE: Get or Set TX and RX Preamble Length
37 +AT+IQ:  Get or Set TX and RX InvertIQ
37 37  
38 -AT+SYNCWORD: Get or Set sync word
39 +AT+PREAMBLE:  Get or Set TX and RX Preamble Length
39 39  
41 +AT+SYNCWORD:  Get or Set sync word
40 40  
41 -(% style="color:blue" %)**2) General configuration:**
42 42  
43 -ATZ: Trig a reset of the MCU
44 44  
45 -AT+FDR: Reset Parameters to Factory Default
45 +(% style="color:blue" %)**2). General configuration:**
46 46  
47 -AT+CFG: Print all configurations
48 48  
49 -AT+FCU: Get or Set the Frame Counter Uplink
48 +ATZ:  Trig a reset of the MCU
50 50  
51 -AT+FCD: Get or Set the Frame Counter Downlink
50 +AT+FDR:  Reset Parameters to Factory Default
52 52  
53 -AT+GROUPMOD: Get or Set TX and RX group
52 +AT+CFG:  Print all configurations
54 54  
55 -AT+RXMOD: Get or Set Rx Timeout and Reply mode
54 +AT+FCU:  Get or Set the Frame Counter Uplink
56 56  
57 -AT+SEND: Send text data or hex along with the application port and confirm status
56 +AT+FCD:  Get or Set the Frame Counter Downlink
58 58  
59 -AT+RECV: Print last receive message, RSSI and SNR
58 +AT+GROUPMOD:  Get or Set TX and RX group
60 60  
60 +AT+RXMOD:  Get or Set Rx Timeout and Reply mode
61 61  
62 +AT+SEND:  Send text data or hex along with the application port and confirm status
62 62  
63 -== 2. Serial port information ==
64 +AT+RECV:  Print last receive message, RSSI and SNR
64 64  
65 65  
66 -(% style="color:blue" %)**1) Information initialized at reset：**
67 67  
68 +== 3.2  Serial port information ==
69 +
70 +
71 +(% style="color:blue" %)**1). Information initialized at reset：**
72 +
68 68  [[image:image-20220926112125-1.png]]
69 69  
70 70  
71 -(% style="color:blue" %)**2) In retransmission, the Uplinkcounter does not accumulate. The following figure shows that the third count packet is retransmitted twice when the ACK packet is not received.**
76 +(% style="color:blue" %)**2). In retransmission, the Uplinkcounter does not accumulate. The following figure shows that the third count packet is retransmitted twice when the ACK packet is not received.**
72 72  
73 73  
74 74  [[image:image-20220926112125-2.png]]
75 75  
76 76  
77 -(% style="color:blue" %)**3) In the figure below, the receiver sends an ACK to the sender after receiving the packet, and the sender stops retransmission after receiving the ACK.**
82 +(% style="color:blue" %)**3). In the figure below, the receiver sends an ACK to the sender after receiving the packet, and the sender stops retransmission after receiving the ACK.**
78 78  
79 79  
80 80  (% style="color:red" %)**Receiver: (configured as AT+RXMOD=65535,2)**
... ... @@ -89,10 +89,9 @@
89 89  
90 90  
91 91  
97 +== 3.3  Data Format: ==
92 92  
93 -== 3. Data Format: ==
94 94  
95 -
96 96  1 byte of TXGROUPMOD +n payload + 4 bytes of checksum
97 97  
98 98  
... ... @@ -104,27 +104,30 @@
104 104  
105 105  
106 106  
111 += 4.  AT Command Set: =
107 107  
108 -= AT Command Set. =
109 109  
110 -== Set TX and RX Bandwidth ==
114 +== 4.1  Set TX and RX Bandwidth ==
111 111  
112 -Set TX and RX BandWidth (0 ~~ 9)
113 -0: 125 kHz
114 -1: 250 kHz
115 -2: 500 kHz
116 -3: 62.5 kHz
117 -4: 41.67 kHz
118 -5: 31.25 kHz
119 -6: 20.83 kHz
120 -7: 15.63 kHz
121 -8: 10.42 kHz
122 -9: 7.81 kHz
123 123  
117 +(% style="color:blue" %)**Set TX and RX BandWidth (0 ~~ 9):**
124 124  
125 -Default Value: AT+BW=0,0 ~/~/ BandWidth: 125kHz ,125kHz
126 126  
127 -Range: (0 ~~ 9)
120 +**0:  125 kHz
121 +1:  250 kHz
122 +2:  500 kHz
123 +3:  62.5 kHz
124 +4:  41.67 kHz
125 +5:  31.25 kHz
126 +6:  20.83 kHz
127 +7:  15.63 kHz
128 +8:  10.42 kHz
129 +9:  7.81 kHz**
128 128  
129 129  
132 +(% style="color:red" %)**Default Value: AT+BW=0,0**  (%%) ~/~/  BandWidth: 125kHz ,125kHz
133 +
134 +(% style="color:red" %)**Range: (0 ~~ 9)**
135 +
136 +
130 130  

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