Nettet13. mai 2024 · Re: UART "RX FIFO not empty" IRQ when the FIFO is empty. Well, for me that is at least a possibility. It might work in the example, because the instructions are put there directly after each other. In your code there might be a delay (blackened) and this difference is enough, so the interrupt flag is set again in your case and not in the example. Nettet18. okt. 2024 · Hi, Currently we config spi0 as slave mode connect to a external devices. The external device would output frames continuously. So we try not to reset controller during each application transfer request, and try to re-enable interrupt/DMA in spi isr handle. For PIO mode, this mechanism seems work well per spitest result. But in DMA …
Si446x 上的共享 FIFO - Silicon Labs
Nettet22. jan. 2016 · I have a routine that transmits several bytes of data over the SPI and naturally, the RX FIFO will contain a dummy byte for every byte that i transmit. Later on in the code, i have a routine that reads data from the SPI. In order to properly read data, I need to clear the dummy bytes from the RX FIFO that resulted from my previous transmit. NettetI used, //test the rx fifo level and flush any residual data; while (LL_SPI_GetRxFIFOLevel (SPI2)!= LL_SPI_RX_FIFO_EMPTY); LL_SPI_ReceiveData8 (SPI2); //read to empty … jean\\u0027s ez
Shared FIFO on the Si446x - siliconlabs.force.com
NettetThis was it! Without overrun disable the FIFO threshold interrupt works fine. I've developed a habit to always disable overrun detection because it somehow interfered with polling … NettetAs an embedded developer my two main complaints about UART / SPI / I2C FIFOs are FIFOs of only one byte length and lack of separate interrupt for FIFO empty vs FIFO has some space. One byte FIFOs are problematic when you have RTS / CTS but can't always react within exactly one byte. Lack of empty (or peripheral finished) interrupt causes ... NettetFor devices which contain unmanaged switches (e.g. legacy SR-IOV or multi-host NICs) the events counted may not pertain exclusively to the packets destined to the local host … jean\\u0027s eu