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Hello, I need to complete UART Comm using SPORT by DMA mode.The DSP I use is SHARC 21062.when receiving data,I encounter one problem which doesn't happen everytime .But sometimes the Cx register doesn't decounter anymore.So no interrupt generates and the program won't go into the receive interrupt service program and the communication terminate. HOW does this happened?and how can I fix it?plz help me. thanks. samuel |
Problem while realizing UART Communication Using SPORT with DMA MODE
Started by ●January 16, 2005
Reply by ●January 17, 20052005-01-17
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On Sun, 16 Jan 2005, wyfchina2002 wrote: > > Hello, > I need to complete UART Comm using SPORT by DMA mode.The DSP I > use is SHARC 21062.when receiving data,I encounter one problem which > doesn't happen everytime .But sometimes the Cx register doesn't > decounter anymore.So no interrupt generates and the program won't go > into the receive interrupt service program and the communication > terminate. > HOW does this happened?and how can I fix it?plz help me. > thanks. > samuel Howdy Samuel, See if any other registers are being set to zero, like the IMx or EMx or ECx. The first 2 should not be a problem, but the last might be. Patience, persistence, truth, Dr. mike |
