Thanks Glenn,
That is exactly what I wanted to know. I may pick you brain if I have any issues. I may also have a chat with you about the high data rates as I have another project requiring those kinds of bit rates. Thank you very much for the response. Cheers Eric On 2016-09-07 00:31, glen english wrote: > right.. so an interrupt handler that deals with USART ERR condix and buffer > handling (about 4 lines of C) will be just fine. > > On 7/09/2016 8:05 AM, Bruce Perens wrote: > Glenn, he wants to be a CAT target or host. > > On Tue, Sep 6, 2016 at 2:51 PM, glen english <g...@cortexrf.com.au> wrote: > > and furthermore to my previous USART post > > Eric, you are going to have to implement a USASRT interrupt handler anyway. > why ? > Because you need to handle an error condition as it happens. This is for any > peripheral, DMA or not. > > So, using the usart, just have a single IRQ handler that does everything, and > enable all IRQ flags > so it is a catch all. > > Now, if you want fast SPI, so 42 Mbps (what I do on all four ports) > I use DMA for transfer , but I still have a interrupt but have the IRQ flags > only for errors- IE normal TXE or RXNE dont generate interrupts (they trigger > a DMA xfer) in that case but ERR does. > > The peripherals are quite complex compared to the AVR days. And poorly > behaved. > > Read the errata for the chip part number you have > With 20 page errata, there will be something affecting what you are doing.... > > glen ------------------------------------------------------------------------------ _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2 [1] Links: ------ [1] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
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