User's Manual

User Manual
SM3000 OEM module
Remarks – Host implementationWin32
In case a PC host implementation uses the C++ Win32 API to open a COM port it can use the flow control
provided by it (WindowsXP and up):
In the DCB of the SetCommState function use the following values:
// The windows driver will only transmit if the CTS line is low
fOutxCtsFlow = TRUE
// Make sure the DTR line is always low
fDtrControl = DTR_CONTROL_ENABLE
//RTS is low when there is data in the output buffer and high if not
fRtsControl = RTS_CONTROL_TOGGLE
Be sure to write exactly one SPP message to the COM port and wait for it to complete before sending
another.
Wait at least T
C
between messages.
6.2.3 I2C interface
The SM3000 OEM module supports up to two software emulated I2C bus. One of the bus is used by the
current on-board temperature sensor while the other bus is available on pins 11 and 12 of JP2.
20/27 Ambient Systems B.V.