What does NEWVAL mean in TIM?

[seanwu]

Dear sir,

There is a NEWVAL interrupt siganl in TIM. But I don't know what the new value mean.

Could you please help to explain it?

THanks.

BR,

Sean Wu

[Di_W]

Please refer to 28.13.4 TIM Channel Architecture in user manual.

When new data is written into GPR0 and GPR1 the NEWVAL bit is set in TIM[i]_CH[x]_IRQ_NOTIFY register and
depending on corresponding enable bit value the NEWVALx_IRQ interrupt is raised.

[seanwu]

Dear sir,

What is the new data type? A low to high or high to low change? Or a duty cycle?

Thanks.

BR,

Sean

[Di_W]

NEWVAL: The NEWVAL IRQ interrupt is triggered at the end of a measurement cycle, signaling that the registers GPR0 and GPR1 are updated.

[seanwu]

Dear sir,

What does "at the end of a measurement cycle" mean?

Thanks.

BR,

Sean

[seanwu]

Dear sir,

Is like the below picture?  measurement cycle is from "a" to "b"?

The interrupt is triggered at "b". If I want to trigger interrupt at "a" point, how to do that or unable to do?

Thanks. BR,

Sean

[Di_W]

From my understanding, I think it's triggered at the end of measurement cycle. not enable to change.

[seanwu]

Dear sir,

Sorry, I don' understand what you mean

[Jeremy_Z · Accepted solution]

Hi @seanwu 
The NEWVAL IRQ interrupt is triggered at the end of a complete measurement cycle which includes the period and duty cycle, so it's unavailable to customize its working mechanism.
BR,
Jeremy