Help! SHARC DMA UART settings
Hi, anyone can help me with DMA UART settings, I'd like to use DMA UART, with interrupts occurring when receiving data.
here is my code, I don't know how to use PICR2 registers. pls help me ,thanks
picr2 = *pPICR2; /* get PICR2 */
picr2 &= (~(0x1f<<10)); /* clear P14 bits */
picr2 |= (0x13<<10); /* set UART0RX */
(*pPICR2) = picr2; /* put it back */
sysreg_bit_set(sysreg_IMASK, P14I ); /* unmask UART RX interrupt */
(*pUART0IER) = UARTRBFIE; /* enable UART RX interrupt */
//UART interrupt
adi_int_InstallHandler(ADI_CID_P14I , (ADI_INT_HANDLER_PTR)UARTisr, NULL, true);
dsp
software
sharc
dma
uart
Hi,
Could you please confirm whether you are using ADSP-214xx processor.
If so, please find the attached UART DMA code for ADSP-21479 processor. It is in VisualDSP++ project, you can use this code as a reference and port to CCES as per your requirement.
Also, please refer the "Programmable Interrupt Priority Control Registers" in (Pg No: 962) in the below linked HRM.
www.analog.com/.../ADSP-214xx_hwr_rev1.1.pdf
Regards,
Ranjitha.R
6648.UART_DMA.zip
HI Ranjitha, thanks for your reply, I am using SHARC-21489, the example u provided I just tried it before, but this one does not work for the receive interrupt. the code never goes into interruption, any ideas about this issue?
Hi,
Please find the attached UART loopback example for CCES. This can be directly run on the ADSP-21489 board.
We have checked in ADSP-21489 Ez-kit, we could be able to hit the interrupt while received data.
Also, please find the attached screenshot for receive interrupt.
Regards,
Ranjitha.R
UART_DMA_21489.zip
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