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Hello everyone
Dma transfer meet an error when the transfer size is more than 0x300,Use CyU3PDmaChannelGetStatus to get the DMA statue and the return status is CY_U3P_DMA_ERROR.what can lead the error ,and how can I solve it
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Ayi,
Please change the starting piece of code in the main function as shown below, if you are using GPIF II in 32-bit mode.
CyU3PIoMatrixConfig_t io_cfg;
CyU3PReturnStatus_t status = CY_U3P_SUCCESS;
CyU3PSysClockConfig_t clkCfg = {
CyTrue,
2, 2, 2,
CyFalse,
CY_U3P_SYS_CLK
};
/* Initialize the device */
status = CyU3PDeviceInit (&clkCfg);
if (status != CY_U3P_SUCCESS)
{
goto handle_fatal_error;
}
/* Initialize the caches. Enable instruction cache and keep data cache disabled.
* The data cache is useful only when there is a large amount of CPU based memory
* accesses. When used in simple cases, it can decrease performance due to large
* number of cache flushes and cleans and also it adds to the complexity of the
* code. */
Let me know the result after doing this modification.
Thanks,
sai kirshna.
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Hello RSKV
Thank you very much,The problem has been solved with your suggestion.The issue confused me a week.I am so hanppy the moment of solved the problem. I have notivecd the clock (status = CyU3PDeviceInit (NULL);)last week ,I know you add a parameter in the CyU3PSysClockConfig_t from SDK V1.1.1 , I also went to configure the CyU3PSysClockConfig_t to replease the NULL.But I failed ,becouse I don't know how to configure the other parameter expected setSysClk400 and all the examples are configuration with NULL.So I thought the NULL is the corrected configuration.So I suggest you add the configuration infomation in the examples with the new release SDK ,maybe others will meet the same issue.
Thanks
Best regards