CAPSENSE™ & MagSense Forum Discussions

Hi,

I have an an application that requires 6 button in CDS (self) mode with a shield signal to improve water immunity.

Could you please let me know how check what is the amount of resources (flash an RAM) that this library needs?

Or, do you have a roughly indication of that (for sure it depends if the parameter are fixed or if auto calibration is enable). Thanks a lot,

BR,

Giordano

Hi,

I refer the "Table 5-6. Recommended values for the Threshold parameters" for manual tuning.

Recommended values for the Noise Threshold is 40% of signal on this table.

Please explain why 40% was defined of this value.
The gap between 40% to 80%(Finger Threshold) is no action taking of this method.

What made you decide on this value? Please let us know if you have a design policy or design concept.

Best Regards,

Naoaki Morimoto

Hello:

We have been using CY8CMBR3002 in many projects and for several years. However recently all Cyress distributors have no CY8CMBR3003 in stock and we have trouble to source it and cant deliver to our customers. Is CY8CMBR3002 is EOL or just out of stock?  Please help us find the distributor or provide replacement.

Thanks.

Chang Cao

I saw the link below.

https://community.infineon.com/t5/Knowledge-Base-Articles/Troubleshooting-Guide-for-CapSense-MBR3-Designs-KBA210900/ta-p/250714#ninth

Previously, MiniProg4 was not yet recommended for MBR3.

https://community.infineon.com/t5/Knowledge-Base-Articles/Troubleshooting-Guide-for-CapSense-MBR3-Designs-KBA210900/ta-p/250714#ninth

Currently, MiniProg4 seems to be able to work with the MBR3 configuration.
Is this correct?

Hi,

I know that the slave address of this device has 0x37 as the default value.

Since the slave address cannot be set by the external pin, it seems that multiple CY8CMBR3xxx cannot be connected on the same I2C bus if we do not change the slave address of CY8CMBR3xxx before assembly.

In fact, the host controller was unable to communicate well with multiple CY8CMBR3xxx on the same bus at first boot.

So our customer wants to reset the inactive CY8CMBR3xxx with XRES while the slave address is sent from the host.
Is this solution correct?

I want to make sure that all the functions of CY8CMBR3xxx including the I2C-Slave circuit are guaranteed to start from the initial state when the reset is released and the IC resumes operation.

Hello，

我想用这款 CY8C4014SXI-421这款新品做电容触摸应用，之前没有接触过 cypress，不知道如何使用，想开发哪块板子进行想问下这样的情况选择电容式触摸屏的功能和我所选择的 IC 型号想什么？

Dear Receiver,

I would like to create a whole new Capsense project. So I add a Capsence block and EzI2C block.

But I met a problem, I don't know how to select I2C pin(SCLK/SDA).

I don't know which I2C pin connect to Capsense tuner software. please refer to the attached file.

Could you guide me how to know which I2C pin that Capsense Tuner used ?!

Thank you so much.  

I want to program the CapSense with a µC. Specifically I want to change a SPO register to be used as a driven shield. Since I'm new to this, some of the first instructions in the programming manual are unclear to me: 

//-------------------------------------------------------------------------------
// Note, that this step requires following data from hex-file:
// - I2C Program Address (0x90500002 – offset in hex)
// - I2C Verify Address (0x90500003 – offset in hex)
// Programmer should implement below APIs:
// 1) HEX_GetProgramAddr() and 2) HEX_GetVerifyAddr()
// Reset Target depending on acquire mode – Reset or Power Cycle
If (AcquireMode == “Reset”) ToggleReset(); // Toggle XRES pin, target must be powered.
Else If (AcquireMode == “Power Cycle”) Power(ON);// Supply power to target.
// Loop to find out correct I2C device from hex-file
Program_Address = HEX_GetProgramAddr();
Verify_Address = HEX_GetVerifyAddr();

So do I get this right, that I get the Hex File only by reading it from the chip? What is this the proper way of receiving the hexfile from the CapSense?

So do I need to read the adresses 0x90500002 and 0x90500003 of the CapSense with I2C? Will the result of this reading be the Hex File Record Struct, where I can extract the adresses? If so, how do I know the size of the structure before reading it?

I saw in the Page 22 of CY8CMBR3106S datasheet，pin19  is connected to a BUZZER.But in Page 11,pin19 is not defined as a BUZZER output,is there a mistake?

I want to use a two layers FPC to design a slide with CY8CMBR3106S.But I'm not sure  if the soldermask(usually use PI material)  will  affect the sensitivity or not?Should I expose the slide segment pad?