PSoC™ 4 Forum Discussions

Hello,

I have CY8CKIT-042 PSoC® 4 Pioneer Kit. I need to configure this kit as master with SPI mode and need to drive some slave device.

I have got some example code from code samples, which used SCB1 configured as SPI(master) and have tested loopback(MOSI to MISO) which worked fine.

Now I need to configure SCB1_SPI as master which drives 24MHz to slave, as below.

But I am unable to do it. I have configured SPI as below. As per the TRM, this configuration must produce 24MHz clock for SPI but it is driving only 4MHz.

But in the clock section, I can see 24MHz for SPIM_SCBCLK.

Why there is a difference in SPIM_SCBCLK(24MHz) and SPIM:sclk_m(4MHz) which is driving?

Any other configurations, which are affecting the desired frequency of SPI? Please suggest.

Any suggestion should be grateful.

Hello all,

I am using cyble-014008-00 and I have a characteristic with notify property: when the characteristic is written a notification with the response is sent back

I am using cysmart to connect and read/write

Here you can find that notify is disabled, but the notification is received:

read Client Characteristic Configuration (ccc)

[15:20:11:337] : 'Read Characteristic Descriptor' request sent

[15:20:11:337] : Attribute Handle: 0x0010

[15:20:11:338] : 'Command Status' event received

[15:20:11:338] : Status: BLE_STATUS_OK

[15:20:11:356] : 'Read Characteristic Descriptor Response' event received

[15:20:11:356] : Value: [00:00]

[15:20:11:374] : 'Command Complete' event received

[15:20:11:374] : Status: BLE_STATUS_OK

write

[15:20:26:790] : 'Write Characteristic Value' request sent

[15:20:26:790] : Attribute Handle: 0x000E

[15:20:26:790] : Value: [7B:22:54:53:22:3A:31:31:7D]

[15:20:26:791] : 'Command Status' event received

[15:20:26:791] : Status: BLE_STATUS_OK

[15:20:26:808] : 'Command Complete' event received

[15:20:26:808] : Status: BLE_STATUS_OK

notify

[15:20:26:836] : 'Characteristic Value Notification' event received

[15:20:26:836] : Attribute Handle: 0x000E

[15:20:26:836] : Value: [7B:22:52:43:22:3A:30:2C:22:54:53:22:3A:31:31:2C:22:4D:50:56:22:3A:22:32:2E:33:22:7D]

It seems that CyBle_GattsNotification does not check ccc

How can I read ccc and send the notify only if it is enabled?

Please answer below.
The same question is written in English and Japanese.

・English
What can I do with "Unprotected" (U) and "Full Protection" (W)?

think as follows. Is this correct?
"Unprotected" (U) → bootloader, self-rewritable
"Full Protection" (W) → bootloader, self-rewriting not possible

・Japanese(日本語)
“Unprotected”(U)、“Full Protection”(W)はどのようなことができる設定ですか？

以下、理解で間違いないでしょうか？
“Unprotected”(U)→bootloader,自己書き換え可能
“Full Protection”(W)→bootloader,自己書き換え不可能

Regards

Hi,

I'm using host processor communicates via i2c to configure CY8CMBR3116 device. After sending 128bytes of configuration, I send command 0x02 to CTRL_CMD register. Documentation says that write operation takes 220ms, and after this time there should be 0x00 in CTRL_CMD register. I get 0x00 but after about 600ms. After this, device works correctly. Is this correct behavior? Mayby I should not check CTRL_CMD register for 0x00, only wait 250 ms and check CTRL_CMD_STATUS?

Hi,

Following on from this thread: How do you determine brown out detection event?

How do you actually detect the brown out?  It appears that when the MCU enters hibernate and then comes out, that this flag is set.

Is there a pattern for accurately detecting a brown out, as the simple pattern of checking if key==0x3A71 doesn't always indicate a brown out?

Thanks, Dave

Hello,

I refer the section of 5.3.2.2.1 Sense Clock Related Parameters.

it describe that the typical value of the GPIO resistance is 500 Ω.

Please tell me the spec of min/max of GPIO resistance.

If there is no specification about it, what % of error should I assume?

PSoC® 4 and PSoC 6 MCU CapSense® Design Guide

Document Number. 001-85951 Rev. *W

https://www.cypress.com/file/46081/download

Best Regards,

Naoaki Morimoto

PSoC® 4 and PSoC 6 MCU CapSense® Design Guide

Document Number. 001-85951 Rev. *W

https://www.cypress.com/file/46081/download