TMS570LC4357: ETPWM Trip Zone input

Chandra Sekhar N

Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN,

Hi, I have configured nTZ1, nTz2 and nTZ3 as the trip zone inputs for the PWM engine. I have enabled the interrupt for these signals and try to catch the ISR in HL_Notification.c file with etpwmTripNotification function.

I have pulled the pin C3 by connecting to DC ground to trigger interrupt.I did not found the break point hit in the function etpwmTripNotification. I have tried to configure the HalcogGen ETPWM1 with Enable TZ1 as a CBC trip source, and one-shot trip source. No luck.

Looking for help to solve the issue.

Regards,

Chandra

over 5 years ago

0 QJ Wang over 5 years ago

TI__Guru**** 197306 points

Hello Chandra,

1. Have you configure the Pin multiplexing and Input Pin Muxing for this trip zone signal? TZ1_1 has two terminals: N19 and C3. If you use C3 (2nd terminal), please check C3 for nTZ1_1 on HalCoGen Input Pin Muxing.

2. Please enable the etpwm1 TZ1 interrupt in VIM (channel 91)

0 Chandra Sekhar N over 5 years ago in reply to QJ Wang

Intellectual 880 points

Hi,

Yes. These are done. I am already using PWM interrupt, and the ISR is working as expected. Issue with only Trip zone input.

Chandra

0 QJ Wang over 5 years ago in reply to Chandra Sekhar N

TI__Guru**** 197306 points

Hi Chandra,

I knew that you have enable the INT in VIM, and selected the TZ source. Please enable the trip zone interrupt in TZEINT register.

/** - Set interrupt enable */
etpwmREG1->TZEINT = 0x0000U /** - Enable/Disable Digital Comparator Output A Event 1 */
| 0x0000U /** - Enable/Disable Digital Comparator Output A Event 2 */
| 0x0000U /** - Enable/Disable Digital Comparator Output A Event 1 */
| 0x0000U /** - Enable/Disable Digital Comparator Output A Event 2 */
| 0x0004U /** - Enable/Disable one-shot interrupt generation */
| 0x0000U; /** - Enable/Disable cycle-by-cycle interrupt generation */

0 Chandra Sekhar N over 5 years ago in reply to QJ Wang

Intellectual 880 points

Hi,

The Trip Zone interrupt is enabled and the one-shot interrupt generation configuration is present in the etpwmREG1->TZEINT register and enabled.

Regards,

Chandra

0 QJ Wang over 5 years ago in reply to Chandra Sekhar N

TI__Guru**** 197306 points

Hello Chandra,

I got the TZ1 interrupt without any issue with the settings I mentioned.

0 QJ Wang over 5 years ago in reply to QJ Wang

TI__Guru**** 197306 points

I think you forget to configure the Input Pin Muxing:

0 QJ Wang over 5 years ago in reply to QJ Wang

TI__Guru**** 197306 points

BTW, please enable the interrupt in your main().

Attached are my HalCoGen files:

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/4667.TMS570LC43x_5F00_rtiBlinky.hcghttps://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/8360.TMS570LC43x_5F00_rtiBlinky.dil

0 Chandra Sekhar N over 5 years ago in reply to QJ Wang

Intellectual 880 points

Hi,

Can you please check the files you share are correct one?

What ever you show in the pictures for configuring are not in the project.

In ETPWM configuration page, none of Tripzone input source is selected.

Regards,

Chandra

0 QJ Wang over 5 years ago in reply to Chandra Sekhar N

TI__Guru**** 197306 points

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/1261.TMS570LC4357_5F00_rtiBlinky.hcg

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/312/1323.TMS570LC4357_5F00_rtiBlinky.dil

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TMS570LC4357: ETPWM Trip Zone input