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Slave Sync Fifo examples are differrent in SDK v.1.1 and v.1.1.1: unable to achive hi throughput with v.1.1.1.
With v.1.1.1 there is only ~200MB/s ( IN endpoint), but with v.1.1 throughput is about 330 MB/s!
I found that difference is in state machine programming.
What is wrong with new version?
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Looks like v.1.1.1 use 16 bit bus even define CY_FX_SLFIFO_GPIF_16_32BIT_CONF_SELECT is set to 1.
Version 1.1.1 cyfxgpif_syncsf.h has a lot of differences, for example:
new version v.1.1.1:
uint32_t Sync_Slave_Fifo_2Bit_CyFxGpifRegValue[] = {
0x80000380, /* CY_U3P_PIB_GPIF_CONFIG */
0x000010A7, /* CY_U3P_PIB_GPIF_BUS_CONFIG */
0x01070002, /* CY_U3P_PIB_GPIF_BUS_CONFIG2 */
old version v.1.1:
uint32_t Sync_Slave_Fifo_2Bit_CyFxGpifRegValue[] = {
0x80000380, /* PIB_GPIF_CONFIG */
#if (CY_FX_SLFIFO_GPIF_16_32BIT_CONF_SELECT == 0)
0x000010A7, /* PIB_GPIF_BUS_CONFIG */
#else
0x000010AC, /* PIB_GPIF_BUS_CONFIG */
#endif
0x01070002, /* PIB_GPIF_BUS_CONFIG2 */
If I use this code (i.e. 0x000010AC instead of 0x000010A7) in the example from v.1.1.1 than IN transaction return Error 997.
How to fix v.1.1.1? How to run it in 32-bit mode?
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Hi,
I am also seeing the similar issue and I checking with the internal software team. I will update you soon.
Regards,
sai krishna.
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My sync fifo 32 Bit implementation also stopped working after updating to SDK v1.1.1. Interestingly, when downloading the image to RAM using the j-link debugger, it does work sometimes. Please advice what has been changed between SDK v1.1 and 1.1.1 so as to find the root cause for this.
In parallel I have an additional endpoint that is served by the CPU and there I have no problem at all.
-Sil
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hi sil , I have the same problem like yours .it work well in sdk v1.1.But after I updata to sdk V 1.1.1 ,download the *.img to ram it is not work well .the source code are the same .with sdk v 1.1.1 when burst read size more than 0x330 it is receive nothing .In app FinishDataXfer will return false
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Guys,
Can you please try your projects with the latest SDK that is released few days back. (SDKv1.2).
Please let me know the result.
Regards,
sai krishna.
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The same result: SDK v.1.2 Slave Fifo example is 16-Bit. Still works 16 bit only. If I set second register in GpifRegValue[] array to 0x000018AC then I got error 997. So, nothing was changed since v.1.1.1 of sdk 😞
Note: SDK 1.2 has GPIF-II designe version 1.0.715.0 but SDK 1.2 example (at least slave sync fifo) uses GPIF-II version 1.0.836.1 !
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Guys,
Please change the starting piece of code in the main function as shown below:
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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Yes, it works!
Thank you!