Does this device have input voltage ripple or spike regulations?

Ripple will occur up to 130mVp-p at 5V in low temperature conditions. LVD is set to 4.81V(Typ), but it has not been reset. (VM[2: 0] = 111b)

Thanks,
Tetsuo

I am trying to compile a C/C++ makefile project using the Eclipse IDE for ModusToolbox (Version:  2.2.0, Build ID: 2181) for CY8CKIT-062-BLE  target.  I am able to compile  *.c and *.cpp files but *.cc files  is excluded from the compilation.

If I add following in the Makefile:

SOURCES = $(wildcard extlib/*.cc) 

The build console displays following error message:

../mtb_shared/core-make/latest-v1.X/make/core/build.mk:386: *** Incompatible source file type encountered while constructing explicit rule: extlib/utils.cc. Stop.

Hi Sir,

我在调试43455的时候，在加载FW出现error，导致DHD 加载失败。

我使用的环境是IMX.8的平台，arm64，Linux4.18，DHD版本125.15~125.19都有验证过，海华197（43438），288（43362），256（43455）EVK，其中197,288都可以正常工作，256在以上所有版本驱动都出现FW加载失败的问题，理论上来说43438与43455共用同一版驱动没有问题的，也怀疑过可能是256EVK本身的问题，用FMAC验证256EVK是可以正常工作的，所以现在比较疑惑，请帮忙分析下，谢谢。

以下是256加载驱动时的dmesg log，其中一份是通过256EVK的SD口供电，另一份是256EVK的USB口供电。

SD口供电dmesg：

dhd_module_init in
no wifi platform data, skip
DHD wifi platform data is required for Android build
DHD registeing bus directly
F1 signature read @0x18000000=0x15264345
F1 signature OK, socitype:0x1 chip:0x4345 rev:0x6 pkg:0x2
DHD: dongle ram size is set to 819200(orig 819200) at 0x198000
CFG80211-ERROR) wl_setup_wiphy :
Registering Vendor80211
wl_create_event_handler(): thread:wl_event_handler:deb started
CFG80211-ERROR) wl_event_handler :
tsk Enter, tsk = 0xffff800074961bb8
dhd_attach(): thread:dhd_watchdog_thread:ded started
dhd_attach(): thread:dhd_dpc:dee started
dhd_attach(): thread:dhd_rxf:def started
dhd_deferred_work_init: work queue initialized
dhdsdio_membytes: membytes transfer failed
dhdsdio_membytes: FAILED to set window back to 0x18100000
dhdsdio_download_code_file: error -1 on writing 2048 membytes at 0x00198000
_dhdsdio_download_firmware: dongle image file download failed
dhdsdio_htclk: Failed access turning clock off: -35
dhd_bus_start: failed to download firmware /home/root/fw256.bin
dhdsdio_probe: dhd_bus_start failed
dhd_wlfc_deinit():3750, Already disabled!
dhd_detach(): thread:dhd_watchdog_thread:ded terminated OK
dhd_detach(): thread:dhd_rxf:def terminated OK
dhd_dpc_thread: Unexpected up_cnt 0
dhd_detach(): thread:dhd_dpc:dee terminated OK
CFG80211-ERROR) wl_event_handler :
was terminated
wl_destroy_event_handler(): thread:wl_event_handler:deb terminated OK
bcmsdh_sdmmc: probe of mmc1:0001:2 failed with error -12
dhd_module_init out

USB口供电dmesg：

dhd_module_init in
no wifi platform data, skip
DHD wifi platform data is required for Android build
DHD registeing bus directly
F1 signature read @0x18000000=0x15264345
F1 signature OK, socitype:0x1 chip:0x4345 rev:0x6 pkg:0x2
DHD: dongle ram size is set to 819200(orig 819200) at 0x198000
CFG80211-ERROR) wl_setup_wiphy :
Registering Vendor80211
wl_create_event_handler(): thread:wl_event_handler:dda started
CFG80211-ERROR) wl_event_handler :
tsk Enter, tsk = 0xffff800074921b70
dhd_attach(): thread:dhd_watchdog_thread:ddc started
dhd_attach(): thread:dhd_dpc:ddd started
dhd_attach(): thread:dhd_rxf:dde started
dhd_deferred_work_init: work queue initialized
dhdsdio_write_vars: Download, Upload and compare of NVRAM succeeded.
dhdsdio_download_state: Failed to write 0xb83ef198 to addr 0
dhdsdio_download_state: contents of addr 0 is 0xffff0000
_dhdsdio_download_firmware: error getting out of ARM core reset
dhd_bus_start: failed to download firmware /home/root/fw256.bin
dhdsdio_probe: dhd_bus_start failed
dhd_wlfc_deinit():3750, Already disabled!
dhd_detach(): thread:dhd_watchdog_thread:ddc terminated OK
dhd_detach(): thread:dhd_rxf:dde terminated OK
dhd_dpc_thread: Unexpected up_cnt 0
dhd_detach(): thread:dhd_dpc:ddd terminated OK
CFG80211-ERROR) wl_event_handler :
was terminated
wl_destroy_event_handler(): thread:wl_event_handler:dda terminated OK
bcmsdh_sdmmc: probe of mmc1:0001:2 failed with error -12
dhd_module_init out

Best Regards，

Leo

I'm trying to send data packets between two BLE devices (A and B) with both peripheral/central GAP roles.  When I add and remove other devices to the BLE network, I find by debugging device A that it can enter a state where any attempt at sending a GATT notification to device B returns a  CY_BLE_ERROR_INVALID_OPERATION error, though it can send GATT notifications to other devices that are connected.  In this circumstance, A is peripheral wrt to device B, and GATT write requests can be sent from device B to device A.  Cypress code comments indicate CY_BLE_ERROR_INVALID_OPERATION occurs when the BLE stack queue is full or some other problem occurs.  Is it possible to look at the BLE stack queue in debug mode to get a clearer idea of what's going wrong?

Dear Sirs and Madams,

The item "Table 3. External Clock Input Requirements" is defined in AN72332, where "Rise time / fall time 3 [ns] (Max)" is specified. 

Please tell us this voltage condition. (For example, 20% -80% VCC, not specified, etc.)

AN72332

https://www.cypress.com/file/122726/download

Regards,

Can someone modify the Handsfree or headset snip in Modus 2.2 to demonstrate PCM out and PCM in for the 353027-EVAL board?

I've been trying but unsuccessfully to get this to work.

Hello, 

I am designing a capacitive sensing trackpad using the CYBLE-214015-01 module. I notice that when I have my finger also touching the battery, the trackpad works great to control the cursor of my computer use the BLE HID Mouse Trackpad code provided by Cypress. Conversely, when I am not physically touching the battery, the trackpad works poorly. Do you have any insights on why this is the case? I have added a hatched ground plane to the front and back layer of the PCB as well as solid ground planes to the two middle layers of the  PCB. Originally, I thought it was a grounding issue, however, I have maximized the amount of ground planes I can add to my design. I also added the 560 ohm resistors to each of the CapSense pins.

Thank you.

I downloaded the cyfx3ad9269 example file posted on the forums here:  https://community.cypress.com/t5/USB-Superspeed-Peripherals/how-to-read-asynchronous-data-to-FX3/td-p/101517?start=0&tstart=0

Unfortunately, the example doesn't seem to build with the current SDK.  I changed the return value of CyU3PDmaBufferFree as described in the porting guide, and that gets me as far as linking.  That fails with a number of undefined references:

./cyfxbulksrcsink.o: In function `CyFxBulkSrcSinkApplnDebugInit':
C:\Users\user\Workspace\cyfx3ad9269\Debug/../cyfxbulksrcsink.c:102: undefined reference to `CyU3PUartInit'
C:\Users\user\Workspace\cyfx3ad9269\Debug/../cyfxbulksrcsink.c:119: undefined reference to `CyU3PUartSetConfig'
C:\Users\user\Workspace\cyfx3ad9269\Debug/../cyfxbulksrcsink.c:126: undefined reference to `CyU3PUartTxSetBlockXfer'
./cyfxspi_bb.o: In function `CyU3PSpiReadAd9269':
C:\Users\user\Workspace\cyfx3ad9269\Debug/../cyfxspi_bb.c:40: undefined reference to `CyU3PGpioSetValue'
C:\Users\user\Workspace\cyfx3ad9269\Debug/../cyfxspi_bb.c:49: undefined reference to `CyU3PGpioSetValue'

I'm not too familiar with the SDK yet.  Could someone point me in the right direction for getting this building on a modern SDK version?