RF-Star RF-43UP - Page 25

RF-43UP
www.szrfstar.com V1.3 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 24 of 34
The specific understanding is as follows: [1A] is in hex, and its binary is [0001 1010].
bit7, bit6 means serial parity bit
bit7
bit6
Serial Parity BIt
Description
0
0
8N1 (by default)
The serial port mode of communication module can be
different.
0
1
8O1
1
0
8E1
1
1
8N1 (Equivalent to 00)
bit5, bit4, bit3 means baud rate.
bit5
bit4
bit3
Baud Rate (bps)
Description
0
0
0
1200
The baud rate of both sides of communication
module can be different. The baud rate of the serial
port is independent of the wireless transmission
parameters and does not affect the characteristics of
the wireless transceiver.
0
0
1
2400
0
1
0
4800
0
1
1
9600 (by default)
1
0
0
19200
1
0
1
38400
1
1
0
57600
1
1
1
115200
bit3, bit2, bit1 means air rate.
bit3
bit2
bit1
Air Rate (bps)
Description
0
0
0
0.3k
The lower the air rate, the longer the distance. The
stronger the anti-interference performance and the
longer the transmission time.
The air rate of both sides must be the same.
0
0
1
1.2k
0
1
0
2.4k (by default)
0
1
1
4.8k
1
0
0
9.6k
1
0
1
19.2k
1
1
0
19.2k (Equivalent to 101)
1
1
1
19.2k (Equivalent to 101)
In summary, the parameters of [1A] (in hex) → [0001 1010] (in binary) are: [8N1, baud rate: 9600, air rate of 2.4k].
For example: The parameters needed are the module address of 1000 (in decimal), the serial parity bit of 8N1, the baud
rate of 19200, and air rate 19.2k. Expressed as:
⚫ Address is 1000 in decimal, and the hexadecimal representation is 0x03E8, express it as [03 E8].