Hi TI
Request for your support on enabling the ePWM module. I am currently using Hercules TMS570LC43x Launchpad Kit.
I am intending to verify the Plots in SALEA tool in EPWM1A (J4 Pin 7 : GIOA_5) and EPWM1B (J1 Pin 8 : GIOA_6).
As a initial set up I am intending to replicate the code from spec.. but I am able to see any change in the Plots
Can you Share a template Code so that I can achieve it.
Your Support is highly appreciated.
Regards
Shankar
Hi Shankar,
Do you really want to generate the PWM with 1000 Seconds(16min) period? And your TON(25% duty cycle) will be 250 seconds (4min)?
And also remember the following thing:
The Generated PWM Frequency = (Actual TB clock) / (TBPRD register value + 1)
The Generated PWM Period = (TBPRD register value + 1) / (Actual TB clock)
In your case Actual TB clock is 0.469Mhz
And TBPRD register is a 16 bit value and its max value would be 0xFFFF (65535)
So the max period that we can generate would be
The max generated period for 0.469Mhz TB clock = (0xFFFF + 1) / (0.469 * 1000000) Seconds
= 0.14 seconds only.
But here we are trying to generate 1000Sec which is not possible with the 0.469Mhz clock. So please make sure about this.
I have one example for 6.25usec period generation using ePWM and please refer it for further details:
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Thanks & Regards,
Jagadish.
