Users Manual Part 3

SIM7022-EVB User Guide V1.00
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3.4.1UART Serial Communication
The serial data frame format and serial baud rate of the SIM7022 module are as follows.
1. Set the serial data frame format
SIM7022 supports multiple serial data frame formats. The default data frame format is 8 data bits, 1 stop bit,
and no parity bit.
Table 15: UART frame format
UART frame format
Supported formats
Data bit
8bit,7bit
Stop bit
1bit
Parity bit
Odd, Even, None
2. Set the serial port baud rate
SIM7022 supports a variety of common baud rates. The factory default baud rate of the standard module is
115200, and it supports automatic baud rate adaptation. You can use AT+IPR to set the baud rate.
Table 16: UART baud rate support
UART baud rate support
Supported rate
Serial communication baud rate
4800,9600,19200,38400,57600,115200,230400
,460800,921600 230400,460800,921600
Serial port adaptive baud rate
4800,9600,19200,38400,57600,115200
Common baud rate instructions for serial ports：
Table 17: UART common baud rate operations
UART common baud rate operations
Related instructions
Query the current baud rate
AT+IPR?
Set the boot default baud rate
AT+IPR=
Set temporary baud rate to match automatically
AT+IPR=0