6. Host connection
The Calypso is intended to be used as a radio module in a system, interfaced with a host
micro-controller. The use of industry standard UART as the primary interface ensures a very
minimal requirement set on the host MCU. As a result of this, the module can be designed
in with most host controllers from a 8051 to the more advanced ARM core architecture.
Figure 6: Host Interface
6.1. UART parameters
The Calypso implements the standard UART interface with the following parameters.
Parameter
Range
Standard
Baud
115200 to 3000000
921600
Data bits
8
8
Stop bits
1
1
Parity
none, odd, even
even
Flow control
none, RTS/CTS
none
Table 15: Application modes
The configuration of the UART in factory state is 921600 baud with data format of 8 data
bits, even parity and 1 stop bit ("8e1"). The baud rate and the parity of the UART can be
configured using corresponding commands (see section
). The data format is fixed to 8
data bits and one stop bit. This results in a 11 UART symbols per 8 bit user data ratio.
Calypso reference manual version 1.2
© April 2019
www.we-online.com/wireless-connectivity
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