µTasker Forum

µTasker Forum => NXPTM M522XX, KINETIS and i.MX RT => Topic started by: neil on December 27, 2010, 08:11:44 PM

Title: DMA Timer
Post by: neil on December 27, 2010, 08:11:44 PM
Hi Mark,
  On the 52259 I am using one of the 4 DMA timers (timer 1), is there any DMA timers I should avoid in my application due to utasker use?

Thanks
Neil
Title: Re: DMA Timer
Post by: mark on December 28, 2010, 12:09:49 AM
Hi Neil

The uTasker MODBUS module uses DMA timers when in serial RTU mode [defined by MODBUS0_DMA_TIMER_CHANNEL, MODBUS1_DMA_TIMER_CHANNEL and MODBUS2_DMA_TIMER_CHANNEL].
When GLOBAL_HARDWARE_TIMER is active (this is generally not used since this mode is probably being phased out) it uses a DMA timer [defined as HW_TIMER_USES_DMA_TIMER].

Otherwise there are no further restrictions.

Regards

Mark