FDI LP3180, Руководство пользователя, Страница: 27 / 40

FDI
NXP LPC3180 Demo
User’s Manual
FDI
Rev 2 Page 27 9/7/2007
Figure 13: Probe locations for SPI1 Test
Figure 14: Probe locations for SPI2 Test
After satisfactory results are obtained, the Enter key/Clear button may be pressed to
advance to the SPI2 test. During this test, the oscilloscope probe should be moved to pins
1 and 2 on connector J16 (see Figure 14), and the same procedure should be used to issue
the test.
To exit the test and return to the main menu, the Enter key/Clear button may be pressed.
9.7 Test UART2 to Bluetooth
This test verifies the connection of UART2 from the LPC3180 to the Bluetooth device.
After selecting the test from the main menu, the Space key/OK button may be used to
send the ‘U’ character over the UART. To verify this actually takes place, the
oscilloscope should be configured as described in the previous section. The oscilloscope
probe should be connected to pin 2 of U33 as shown in Figure 15. A similar spike as in
the previous test should be observable on the oscilloscope output when the ‘U’ is sent
across the UART.