Author Topic: Add MCI interrupt in exsting system uTasker RTOS  (Read 5738 times)

Offline Manish

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Add MCI interrupt in exsting system uTasker RTOS
« on: September 18, 2010, 06:00:22 AM »
Hi Mark,

 This is manish here, Our RTU code running in your Utasker RTOS.  and it is running fine, but now we would like to add MCI (for SDCARD) interrupt in exiting system, so can you suggest me how can i will add interrupt. We are use MCI bus for accessing memory card because of SPI pin already used for another purpose. we have separate module for SDCARD which we want add in our RTU code. Please reply soon .

Thanks,
Manish Dabhi


Offline mark

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Re: Add MCI interrupt in exsting system uTasker RTOS
« Reply #1 on: September 20, 2010, 02:16:53 PM »
Hi Manish

The SDIO interface (MCI) is supported in the latest development version of the utFAT and uTasker LPCXXX project. I will send you this projet so that you can see whether it is already suitable for your use.

The SDIO interfaces uses DMA for transfer but is not interrupt driven - in fact I didn't see any advantages of using interrupts.

There is also a video showing this in operation, whereby 18MHz SDIO clock was possible without TFT operation (also uses DMA) or else 9MHz SDIO clock is the limit with active TFT controller: http://www.youtube.com/watch?v=5dD2cZ8FEqo

Regards

Mark