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3.2. Serial Ports
The applicable settings for serial ports are as follows.
Serial Port Settings
Baud rate
Data bite
Parity
Stop bit
Hardware Flow Control
The values in box are the factory default settings.
3.3. Data Bit
Parani-ESD supports only 8 data bit. In the case of 7 data bit and even/odd parity, use Parani-ESD 8
data bit and none parity. At this time, master and slave are Parani-SD, Parani-ESD or Parani-MSP1000
series. But 7 data bit and none parity is not support.
3.4. Hardware Flow Control
Parani-ESD plugged into its host system transmits data from host to the other side Bluetooth device.
This data is saved temporarily in the internal buffer of Parani-ESD and sent repeatedly until the
transmission is completed packet by packet. When the radio transmission condition is not good enough
to send data promptly, it can cause a transmission delay. If the host sends more data when the buffer is
full, buffer overflow will make Parani-ESD malfunction consequently. In order to prevent this buffer
overflow, Parani-ESD works as follows.
When using hardware flow control, Parani-ESD disables RTS so that it stops receiving any further data
from the host when the buffer becomes full. RTS will be re-enabled again to begin receiving data from
the host when the buffer has created more room for more data.
When hardware flow control is not being used, the Parani-ESD clears the buffer to secure room for the
next data when the buffer becomes full. This can mean a loss of data may occur. As the transmission
data becomes large, the possibility of data loss becomes greater.
For large data transmissions, the use of hardware flow control is highly recommended. (Not support flow
control in Multi-Drop Mode.)
3.5. Remote Configuration
Parani-SD1000 supports remote configuration. After connecting to the Parani-SD1000 through
Bluetooth, before sending any other character, send three escape character (default :+). Then, the
Parani-SD1000 will enter remote configuration mode and print "Please Enter Password". You have to
enter the password with "AT+PASS" command within 2 minutes. After the password authentication, you
are able to enter any at command except "ATH", "ATO", "ATD", "AT+BTSCAN", "AT+BTINQ?" and
"AT+BTCANCEL". The default password is "0000" and it is configurable with "AT+CHPASS" command.
Table 3-2 The Parani-ESD Serial Port Settings
Values
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200, 230400, 460800,
921600
8
No parity, Even parity, Odd parity
1, 2
Use, No Use
13
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