CYW43907 QSPI Flash

[Anonymous]

Hello

We are debugging our application board which is almost same as CYW43907EVAL1F but

we use Adesto AT25SF641 instead of MX25L6433FZNI.

We are facing strange problem when bring up the board.

The debug port show the message ;

!!! Sflash will work in generic 1-bit mode ( unknown sflash id :0x17321f ) !!!

I think id :0x17321f is AT25SF641.

Is there any thing for us to change QSPI flash in software ?

Regards

[RaktimR_11 · Accepted solution]

You can find the list of supported sflash CYW43907 with External SFLASH in WICED in this help article.

[Anonymous]

Thank you for the answer.

We will replace flash to the supported one.

When we try to connect JATG, we get some errors.

Is this for unsupported flash ?

Info : Consider using the 'ftdi' interface driver, with configuration files in interface/ftdi/...

Info : max TCK change to: 30000 kHz

Info : clock speed 100 kHz

Info : JTAG tap: BCM43909.cpu tap/device found: 0x5ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x5)

Info : BCM43909.cpu: hardware has 4 breakpoints, 4 watchpoints

Warn : Timeout (1000ms) waiting for ACK=OK/FAULT in JTAG-DP transaction - aborting

Error: JTAG-DP OVERRUN - check clock, memaccess, or reduce jtag speed

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Error: JTAG-DP STICKY ERROR

Polling target BCM43909.cpu failed, trying to reexamine

Error: JTAG-DP STICKY ERROR

Error: Could not initialize the APB-AP

Examination failed, GDB will be halted. Polling again in 100ms

Error: JTAG-DP STICKY ERROR

Polling target BCM43909.cpu failed, trying to reexamine

Error: JTAG-DP STICKY ERROR

Error: Could not initialize the APB-AP

Examination failed, GDB will be halted. Polling again in 300ms

[RaktimR_11]

Most likely, you are receiving the error because the flash protection is active which should not be the case if you use MX25L6433FZNI or any other supported flash .

[AxLi_1746341]

Is it hard to add new flash to wiced sdk?

Tell people how to add new flash support to wiced sdk is better than force people to replace the flash.

[RaktimR_11]

The 6,7 points of the blog post provide a basic outline of adding a new flash support to WICED SDK.

[Anonymous]

Hi rroy,

We are still struggling to bring up the board.

Our board doesn't have 32.768kHz crystal to HIB_XTAL_IN/OUT.

HIB_LPO_SEL is tied to 3.3V.

I think we can use internal RC oscillator in this case.

Is this understanding correct ?

[RaktimR_11]

In order to achieve good power consumption numbers, it is strongly recommended to use an external 32.768 kHz crystal.