21489 DPI PWM doesn't work?

Processors & DSP wjlcde Aug 12, 2016 00:00 2 replies Original on forum ↗

wjlcde Question

Aug 12, 2016 00:00

I need to use 21489's pwm via DPI.

From the datasheet ,PWMONDPIEN bit (bit30 of SYSCTL) should be set to 1.So ,

*pSYSCTL |= (PWMONDPIEN);

But,this didn't work.The reg SYSCTL didn't has this bit,and the bit30 still is 0;

My project options as:

and the include files:

Need help

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wjlcde Reply

Aug 15, 2016 00:00

Problem solved! Also need to set PWMxEN such as:

*pSYSCTL |= (PWMONDPIEN|PWM1EN|PWM2EN);

But something is wrong in the header file "def21489.h",not only for Data pin but also DPI pin.

#define PWM0EN (BIT_24) /* Enables Data[19:16] as PWM3-0 */

#define PWM1EN (BIT_25) /* Enables Data[23:20] as PWM7-4 */

#define PWM2EN (BIT_26) /* Enables Data[27:24] as PWM11-8 */

#define PWM3EN (BIT_27) /* Enables Data[31:28] as PWM15-12 */

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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