User Manual

Eddy User's Guide
73
Serial Ports
The applicable settings for serial ports are as follows.
Serial Port Settings
Values
Baud rate
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200, 230400,
460800, 921600
Data bite
8
Parity
No parity, Even parity, Odd parity
Stop bit
1, 2
Hardware Flow
Control
Use, No Use
The values in box are the factory default settings.
Data Bit
Eddy-BT supports only 8 data bit. In the case of 7 data bit and even/odd parity, use Eddy-BT 8 data bit and
none parity. At this time, master and slave are Eddy-BT. But 7 data bit and none parity is not support.
Hardware Flow Control)
Eddy-BT 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 Eddy-BT 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
Eddy-BT malfunction consequently. In order to prevent this buffer overflow, Eddy-BT works as follows.
When using hardware flow control, Eddy-BT 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 Eddy-BT 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.)