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Circuit.Cellar.-.Cortex-M3.Applications.Using.Stellaris.MCUs
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an I2
C， two channels of UART， and
plenty of general-purpose I/O ports
（GPIO）。 There is a small OLED display
on the evaluation board. This 1″
bright yellowish panel is a fine-pitch
96 × 16 graphic display connected to
the LM3S811 through the I2
C interface. Unlike most LCDs， the OLED
display has a very fast response time，
which is ideal for displaying rapidly
changing oscilloscope
waveforms. A USB controller is also available on
the board for JTAG control
and serial port emulation.
The USB serial port emulation connection can be
used to deliver the captured waveform to a host
PC and show the waveform on a larger， higherresolution PC screen.
Finally， we developed a
small battery-powered
multifunction device with
the following functions： A
dual-channel oscilloscope
supports 250 ksps for each
channel. Each channel has
seven gain settings， which
allow the full-scale display
to be independently set to
±10 V， ±5 V， ±2 V， ±1 V， ±500
mV， ±200 mV， or ±100 mV.
The trigger method includes
Free-Running （Auto） modeastic box. The
e dual-channel
e other end.
This is the
he LM3S811
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