PSoC™ 4 Forum Discussions

I am trying to access register bits but MCU always go into hardfault handler. From disassembly, I can say whenever it executes ldrb instruction, hard fault happen.

Although register access works fine as that uses ldr instruction instead of ldrb instruction.

I am using Cypress-041-41XX PSOC 4100S Pioneer kit.

I have 2 question about PSOC4000 WDT (CY8C4014SXA-421Z)

1- WDT is reset/stop by both software and hardware, right?

2- If 1- is right, how to disable the function that reset/stop WDT from software?

Regards,

CY8C4147AXI-S475で、SAR ADCを使用し、外付けCapcitorを接続する際は、

割り当てることが可能な端子はP1.7のみという認識で間違いないでしょうか？

Hello,

We are working with a CYBLE-214015-01 module, and for my question here is the relevant excerpt from the datasheet:

It says max. injection current is +/- 0.5mA, with the conditions V_IH>VDD (I'll ignore V_IL here). What puzzles me is that the condition is not V_IH>V_GPIO_ABS. For me this would mean that even if the inj.current is limited to +/-0.5mA, V_IH<VDD+0.5V must still always hold to prevent damage to the device. Is this true?

My hope for our use case is that V_IH can go above VDD+0.5V as long as the injection current limit is not overstepped, but the current datasheets suggests otherwise. I'm not sure this is correct in the datasheet though. Can you please advice?

Thank you,

Karoly P.

Hi,

I would like to send a 24bit serial data using assembly code but I am not experienced in assembly at all. Can anyone help me on this? If there are any resources about data transfer in assembly like application notes or something please share with me.

By the way let me give some more detail about what I am trying to do. Basically I want to drive WS2812B RGB LEDs and as you may know they require strict timing for sending bits. I actually implemented a code in C, which using CyPins_SetPin() and Pin_Write() builtin functions but using them is not a good way to solve the issue I guess. Therefore I would like to implement this in Assembly language putting some "nop"s for the delay required sending bits.

So I am in need of all kinds of help,

Thanks in advance!

I am trying to use one of the codes taken from PSOC community (MPU 6050 - Need help reading sensor values), and made the changes as recommended by latest API as suggested by the community. When I run it, it says that MPU6050 failed to connect. I wonder if someone pro at i2c and psoc could help me resolve that issue. I am attaching my project here.

Thanks in advance:

Apoorva

The ADC_SAR_Seq component has an Injector Channel. The datasheet tells that it can be used as a firmware controlled channel, separate from the main channels, to use at a lower sample rate. But what are the benefits of using this channel? If I am going to make samples at a high rate anyway, I suppose I could get this signal for free as a main channel. Or do I get any power saving gains by using the Injector Channel?