PSoC™ 4 Forum Discussions

Hello,

In the attached Datasheet is the range of PSOC 4100S MAX but in the pin assignment there is no info on pins 11 and 15. If someone has already used this system and knows why there are no assignments I would like him to share the information with me.
Knowing that I haven't found any other datasheet concerning this microcontroller and by entering this reference on the Cypress site I can't find a dedicated datasheet for it.

Thank you for help

Dear Sirs and Madams,

(1) When NMIPENDSET is set,
Specify the process in the vector table.

(2) When the time of system call,
The NMI handler code on ROM is executed.
At this time, the code is used for the operation of the non-volatile program and cannot be accessed by the user.

Is the above recognition correct?

Regards,

Dear Sirs and Madams,

We read the stack area and vector table area from map file of PSoC4S.

<Stack area>
0x20000800 PROVIDE (__cy_stack, (ORIGIN (ram) + LENGTH (ram))) [! Provide] PROVIDE (__cy_heap_end, (__cy_stack --0x200))

The above code is the location of the stack area、

_cy_stack --Since it says 0x200,

is it correct to recognize that 0x20000600 to 0x200007FF is the stack area?

<Vector table>
.ramvectors 0x20000000 0x80. \ CortexM0p \ ARM_GCC_541 \ Debug \ Cm0plusStart.o
0x20000000 CyRam Vectors

The above code is the location of the vvector table area、

Is it correct to recognize that the size from 0x20000000 to 0x80 (up to 0x2000007F) is the area of the vector table?

Regards,

Hello everyone!  (about this all I had discussions with PY_21)

Still about “Broadcats+Observe” project  sent us  September 13^th 2019, (here attached again, as we consider it as original Cypress reference),

we find that Broadcast Receiver does not receive all broadcasted BLE packets sent from an advertising device, much less!

This we find is a normal behavior, not a sporadic problem….

Even not enabling Advertising task and having only Observer working most time (scan time duty at 90 percent), the behavior is more less the same…

Here attached a trace, made on a device advertising at the same time, from:

• Nordic Semiconductor Sniffer, connected on WireShark Application
• Cypress “Broadcats+Observe” original project (where, as you can see, I only do data printing on Uart if packet comes from a particular sensor device family)

As you can see Cypress application looses many packets the device sends in the same narrow period of time…

Pls consider that our application is a simple BLE antitheft system where BLE devices only broadcast their state:

• Sensor alive
• Tamper alarm
• Alarm
• Low battery

And so on.

Hello, 
I have two Cy8C-042 Evaluation boards. I want to synchronize them. 
They shared two GPIOs over optocouplers. 1 is the output of 1 and input of other and other ist input of 1 and output of other. 
There is a test I have to perform for 10ms.  for 1ms microcontroller but i cannot be able to synchronize them 100 percent.
at the start of the test, they are almost synchronized but later at the end of test they have a difference of around 200 to 300 uS. 
Can somebody help me to figure out the problem?

In KBA210620 you say that 22Ohm resistors should be placed in series with the D+ and D- USB data line but the technical reference manual specifically says that the silicon has 22Ohm resistors internal to the chip:

18.1 Features
The PSoC USB has these features:
...
■ Integrated 22  USB termination resistors on D+ and D– lines, and 1.5-k pull-up resistor on the D+ line

Do I need external 22Ohm resistors as well?

KBA210620 also says that 0.1uF should be connected between VBUS and GND. Is this necessary even if VBUS is just used to sense the presence of the host, and enable the USB drivers? There is no reference to this in the trm.

I am having problems getting the USB to work reliably. It works as long as there is at least one USB hub between the PSOC and host controller on the PC, but not if the PSOC is connected directly to the host controller, either USB3 or USB2. Error message is : "USB device not recognised, the last device connected to this computer malfunctioned and windows does not recognise it" with device manager saying "Windows has stopped this device because it has reported problems. (Code 43). A request for the USB device descriptor failed."

Traces on the PCB between USB connector and PSOC are about 5mm in length, matched to about 0.5mm,  and reasonably matched to 100 Ohms. PSOC is self powered.

Hi,

What happens to PSoC4 if RS-232 serial cable is unplugged during a bootlodable update by the bootloader via UART? Does the bootloader keep waiting for the next UART reception?

Since it's only halfway written to Flash, it may lead to corruption of the bootlodable. But if PSoC4 is reset and the Host System sends the bootloadable image again, I think it's possible to update the bootloadable.

Best regards

Hi, we are preparing our device with a cyble 012011-00 ble module for RED certification testing. One of the test requires to turn the radio/transmitter off/idle, but the receiver should be on. How can we do that? We are using EZ-serial firmware on the cyble, but I can't find any setting or parameter to do this. (the test is the receiver spurious emission test)