User`s guide

L1 Controller Commands

007-3938-003 91

• Use test i2c <passes> to test the I

C bus as many passes as you enter for the

<passes> variable.

• Use test ioexp set <index> <value> to set a value for an I/O expander. The

variable <index> is an I

C bus address and the variable <value> is the value for the

I/O expander.

• Use test ioexp get <index> to read a value from an I/O expander. The variable

<index> is an I

C bus address.

• Use test ioexp get all to read the values from all of the I/O expanders.

• Use test intr to view the I

C bus interrupt counts. Example 3-65 shows sample

output.

• Use test display to reset the L1 controller liquid crystal display (LCD).

• Use test exception <mem|stack|wdog|fatal> to test the memory fault

handling, stack corruption error handling, software watchdog reset, or fatal_error()

call.

Example 3-65 test intr Command Output

001r19-L1>test intr

I2C interrupts, High: 25 Low: 406

DS1780 0, 1: 0 (0x00) 2: 0 (0x00)

IOExp 0: 197

IOExp 1: 0

IOExp 2: 0

IOExp 3: 0

IOExp 4: 137

IOExp 5: 0

IOExp 6: 11

IOExp 7: 0

Used on all bricks.

uart

The following uart command set displays the status of the following UARTs (universal

asynchronous receivers/transmitters): CTI, CTC, SMP, and Junkbus. This command also

enables you to reset the UART of the Junkbus ASIC.