Adeunis RF ARF8180AA, User Manual

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EN
LoRaWAN TEMP - Guide utilisateur / User guide version V2.0.1
74 of 86
The associated uplink frame has the code 0x31 (see paragraph 4.1.5).
0 1 2 3 4 5 … 11
Code PAYLOAD
0x31 Status VALUE1 VALUE1 VALUE2 VALUE3 VALUE3 X
In this example: CONF ID1 is a 2-byte register, CONF ID2 a 1-byte register and CONF ID3 a 2-byte register.
If an error is detected in the request, the returned 0x31 frame will be empty.
IMPORTANT : The user can specify several CONF IDs in his downlink frame but it is his responsibility to verify that according to the protocol the
size of the data available in a downlink frame will be large enough to contain all the desired data. Otherwise, the application will only send the
first values.
4.2.4 Frame for updating the value of specific registers
This frame (0x41) allows to change the value of requested registers.
0 1 2 3 4 5 … n
Code PAYLOAD
0x41 CONF ID1
CONF ID1
value
CONF ID2
CONF ID2
value (MSB)
CONF ID2
value (LSB)
…
CONF IDn
value
Description of the frame :
• Byte 1: CONF ID1 (8bits) : index of the first register to change. The corresponding register is 300 + value of CONF IDX. For example, if
CONF ID1 = 0x14 (hexadecimal, so 20 decimal), the product will change the value of register number 320.
• Byte 2: value to assign to CONF ID1 : in this example, its value has a size of 1 byte
• Byte 3: CONF ID2 (8bits) : index of the second register to change. The corresponding register is 300 + value of CONF IDX.
• Bytes 4 and 5: value to assign to CONF ID2 : in this example, its value has a size of 2 bytes
• …
The product does not return any uplink frame following the reception of a downlink frame 0x41. However, the Config bit of the status byte (see
section 4.1.1.2) will be set to 1 in the next scheduled uplink frame (periodic or alarm or keep alive frame) if all was well done.
IMPORTANT: the value 0xFF for a CONF IDX will stop the reading of the downlink frame. Only the bytes preceding this value 0xFF will be taken
into account. This mechanism can be useful when you need to work in fixed downlink frame lengths and you do not want to use all available
bytes.