Embedded Target for Texas Instruments C6000 DSPs

C6701 EVM LED

Control the light emitting diodes on the C6701 EVM

Library

c6701evmlib in Embedded Target for TI C6000 DSP

Description

Adding an C6701 EVM LED block to your Simulink block diagram lets you trigger one of the red light emitting diodes (LED) on the C6701 EVM. To use the block, select an LED from the LED list -- internal(1) or external(0) and send a nonzero real scalar to the block. The C6701 EVM LED block triggers the external status LED (User Status LED0) located on the C6701 EVM mounting bracket when you select external. When you select internal, the C6701 EVM LED block triggers the internal status LED (User Status LED1) located at the top of the C6701 EVM board.

When you add this block to a model, and send a real scalar to the block input, the block sets the LED state based on the input value it receives:

• When the block receives an input value equal to 0, the specified LED is turned off (disabled)
• When the block receives a non-zero input value, the specified LED is turned on (enabled)

To activate the block, send it a scalar of any real data type. Vectors do not work to activate LEDs; nor do complex numbers as scalars or vectors.

Both LEDs maintain their state until their controlling C6701 EVM LED blocks receive an input value that changes the state. An enabled LED stays on until its block receives an input value equal to zero and turns the LED off; a disabled LED stays off until turned on. Resetting the C6701 EVM turns both LEDs off.

Note    Target for C6701 EVM uses the external LED to signal overrun conditions during processing on the C6701 EVM, when you set the Overrun option on the Real-Time Workshop dialog to Halt or Continue. Using the external LED as a status indicator through a C6701 EVM LED block can conflict with overrun indications. When you are trying to determine why the external LED is on, recall this point.

Dialog Box

LED

Selects which light emitting diode the block activates on the C6701 EVM. The default setting is external(0).

C6701 EVM DIP Switch

C6701 EVM RESET