PSoC™ 4 Forum Discussions

I want to use 4 buttons to generate 4 interrupts(4 pins belong to different ports), but it seems that there is a limit on the port. What should I do? thanks in advance. 

We are prototyping a device compose of the CY8C4247FNI-BL493 chip, two clocks (24MHz and 32KHz), a digital gyro, and antenna chip (Johansson Technology: 2450AT18B100E). We have learned (reading about the module CYBLE-022001-00) that the trace connecting antenna pin (H7) on the CY8C4247FNI-BL493 chip and the chip antenna should have a specific shape (see attached pic), and impedance (50 Ohm) set by a couple of capacitors and inductors. Also, the 24 MHz clock looks key for a correct load capacitance. But before to move deep in the combination of all these small and critical details associated with the antenna, I would like to ask a basic question associated with the impedance between the pin antenna (H7) and ground on the board we are prototyping. Probing our prototype between the points mentioned above, we got a value ~2 Ohm after mount the CY8C4247FNI-BL493 chip. I understand 2 Ohm doesn't mean a short but still, it looks weird or not? On the other hand, when I probed same points in the bare board it looks open so the board itself is not short.

Thanks, 
Marcelo.

Hi,

i want to use a periodic wakeup from deep sleep mode one times per second.

For testing my hardware i use the PSOC4 S Pioneer Kit with the example project CE210292. (related document CE210192.pdf)

This code example demonstrates how to use Watchdog Timer (WDT) to reset the device and to periodically generate interrupts. It also shows how to use the ILO compensate APIs to improve the WDT interrupt period accuracy.

All seems ok but the accuracy of the 40kHz ILO is not very good.

I measured the signal with an oscilloscope and the result is a periodic WDT-Interrupt with 1040ms. 

Is there a way, that i can further improve the accuracy?

I'm currently trying to develop a high data rate application using BLE. I had intended to send data over bluetooth at 100 Hz. The amount of data in each packet is about 18 bytes. The throughput should not be an issue.  However if I place a requirement that says I must connect 100 times per second to transfer data that means I have a connection event every 10 ms. If the minimum connection interval that means nothing else can be allowed to begin a connection interval. My question is can I write to a few small characteristics as well as this data characteristic and trust the lower layers to push it all through?

Otherwise I can just half the transfer rate and buffer the data, but I'd like to get the data to the central as soon as possible so 100 Hz is preferable.

Hello,

I'm searching for the pinout from a CYBLE-224110 Module with EZ-Serial Firmware.

I mean the pinout that show's how to connect the Module with an MC when use the EZ-Serial Firmware.

Regards,
Michael

I am trying to write the device name (0x2A00) of the GAP service (0x1800) from an iPhone or Android phone. We'd like to be able to set user-defined names for our devices (like Julian's Product) so that devices can be distinguished already when scanning for them. 

Should I set the name by ticking the 'write' checkmark on the device name characteristic and write the name directly over Bluetooth?

I tried to write it through iOS, but the GAP service doesn't show up like the other services. I don't know what lever to pull to make this work. 

Should I have a custom profile for sending the device name, and then setting the device name programmatically with the received string?

I read here that I might be able to use CyBle_ChangeAdLocalName for this purpose. I couldn't find any documentation on this though.