Renesas M-Station, Руководство пользователя

Страница: 80 / 82

M-Station Baseboard
•
No power to M-Station: If the M-Station is connected to the computer, but there is no
power on the V
DD
signal to the micro-board, or on the V
DE
signal powering the interface
logic, no characters are received or sent. Check that the M-Station and the micro-board
have power, and that JP1 and JP2 are set appropriately for the micro-board.
•
M-Station jumpers not set for UART communication: To use the UART on the M-Station
USB interface for communication, JP8 must be set to connect pins 1-2 (TXDSO to UTXD)
and JP9 must be set to connect pins 1–2 (RXDSI to URXD).
•
Micro-board jumpers not set for UART communication: Check that the jumpers on the
micro-board are set in a configuration that connects UART pins to the TXDSO and RXDSI
lines of the flash programming interface. Please see the User’s Manual for the appropriate
board.
•
No program in micro-board flash device: If the flash device on the micro-board has been
erased, there will be no communication.
•
Program not initializing or using UART correctly: The flash device must have a program
that properly initializes and operates the UART port. Most micro-boards are shipped with a
functioning monitor or test program that can communicate with the M-Station in the board’s
default configuration; other demonstration programs are available for the micro-boards on
the M-Station CD-ROM. Check operation with one of these programs in the flash memory,
or examine the code for UART operation to base your own program on.
•
USB cable disconnected during MSTTERM operation: When the USB cable is
disconnected from the M-Station or computer, the M-Station USB driver is unloaded from
memory, and programs can no longer communicate with the M-Station. This may cause an
error message from the MSTTERM program.
72