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[FAQ] TMS320C5517: IDLE3 wake-up with INT0

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Part Number: TMS320C5517

The C55x CSL has an example that demonstrates waking-up the DSP core from IDLE3 via RTC.

This is an example that demonstrates waking up from IDLE3 via the INT0 pin on the C5517 using the EVM5517.

Instructions for running this example:

1) Import the CSL example \c55_csl_3.08\ccs_v6.x_examples\power\CSL_PowerManagement_IDLE3_Example\ into the CCS workspace.

2) Replace the file csl_power_management_idle3_example.c with the file that's attached to this post.

3) Ensure JP10 CLKSEL is shorted so that usb osc is not used.

4) Run the test.

5) Test will stop once usb clk is shut off.

6) Pause and Resume the test.

7) The test will execute the idle instruction that will idle the cpu and wait for the INT0 pin to be grounded (EVM5517).

8) Observe if the INT0 interrupt got the CPU out of idle state. The XF LED will blink. Console will indicate a completion of the test.

Here is a video that demonstrates this procedure.