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你好,
我试图让eMIOS通道在SAIC模式下捕获输入(Falling Edge),然后在每次捕获后触发DMA通道,以便DMA将时间戳从UC寄存器A复制到数据缓冲区。 时间戳取自计数器总线A,由UC23驱动,计数器工作,SAIC模式也工作。 我的问题是eMIOS根本不触发DMA,我只能通过SSRT寄存器手动触发DMA(DMA使能位在eMIOS UC25和UC26控制寄存器中设置)。 SPC58EC80E3 DMA由eMIOS通道触发 eMIOS_0 ... Unified_Channel_25 ... eDMA频道0 eMIOS_0 ...... Unified_Channel_26 ... eDMA频道1 请告知eMIOS无法触发DMA拷贝的可能原因。 最好的祝福, 伊斯兰教Sehsah #edma#spc58ec80e3 #saic#spc58 #dma #emios 以上来自于谷歌翻译 以下为原文 Hello, I am trying to get eMIOS channel to capture an input in SAIC mode (Falling Edge) then trigger DMA channel after each capture in order for the DMA to copy the time stamp from the UC register A to a data buffer. time stamps are taken from Counter Bus A which is driven by UC23, the counter is working and the SAIC mode is also working. My problem is that eMIOS does not trigger DMA at all, i am only able to trigger DMA manually through SSRT register (DMA enable bit is set in the eMIOS UC25 & UC26 control register). SPC58EC80E3 DMA Triggered by eMIOS Channels eMIOS_0 ... Unified_Channel_25 ... eDMA Channel 0 eMIOS_0 ... Unified_Channel_26 ... eDMA Channel 1 Kindly advice of the possible reasons for the failure of eMIOS to trigger the DMA copy. Best Regards, Islam Sehsah #edma #spc58ec80e3 #saic #spc58 #dma #emios |
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你好,Erwan,
DMA触发现在工作正常,问题是BCTU没有启用,因此只要我在触发工作时关闭BCTU,触发器就不会从eMIOS路由到DMA。 现在我有另一个问题,我需要在每次捕获后重新加载计数器总线零值,我的应用程序捕获通道(UC25)中的下降沿,并在每次捕获时从计数器总线A获取时间戳到DMA目标缓冲区,但我需要在每次捕获后重置此时间戳,我可以在SAIC模式下执行此操作,还是在其他模式下可用,或者在捕获后重新加载计数器总线A为零时是否完全无法使用? 以上来自于谷歌翻译 以下为原文 Hello Erwan, The DMA triggering is now working fine, the problem was that the BCTU was not enabled so the trigger was not routed from eMIOS to DMA, as soon as i turned the BCTU on the triggering worked. Now i have another issue, i need to reload the counter bus with zero value after each capture, my application is capturing falling edges in a channel (UC25) and at each capture its taking time stamps from Counter Bus A into the DMA destination buffer, but i need this time stamps to be reset after each capture, can i do this in SAIC mode or is it available in other modes or is it not available at all to reload Counter Bus A with Zero after the capture ? |
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