PSoC™ 5, 3 & 1 Forum Discussions

Hi,

I am trying to work with Sigma-Delta ADC in single-sample mode for 16 bit in PSoC 5. I am testing my ADC by feeding it with 20Hz sine wave. This sine wave is generated by waveform DAC.

For 60 samples at sampling interval of 5 milli-sec about 6 peaks are expected from the ADC output [(60 *5ms)/50ms =6]. However I see 9 peaks when the raw ADC samples are plotted. I have attached the screenshot of the same.

Note :- I have checked the waveform DAC on the oscilloscope and 20Hz was observed.

Am I doing something wrong here ?

I am also attaching the project bundle.

My main.c looks something like this:

#define NO_SAMPLES 60
#define SAMPLING_INTERVAL_MS 5
#include <project.h>
#include<ADC_DelSig_1.h>

uint8 count=0;
int32 samples[NO_SAMPLES];

int main()
{
    
    CyGlobalIntEnable; /* Enable global interrupts. */
    WaveDAC8_1_Start();
    ADC_DelSig_1_Start();

    /* Place your initialization/startup code here (e.g. MyInst_Start()) */
    
    for(count =0; count<NO_SAMPLES;count++)
    {
        ADC_DelSig_1_StartConvert();
        if(ADC_DelSig_1_IsEndConversion(ADC_DelSig_1_WAIT_FOR_RESULT)!=0)
        {
            samples[count]=ADC_DelSig_1_GetResult32();
        }
        ADC_DelSig_1_StopConvert();
        CyDelay(SAMPLING_INTERVAL_MS);
    }   

}

I want to measure the width of each pulse from an external signal. For this I set up a timer to run continuously,trigger at the rising edge and capture at the falling edge. There is an ISR attached to the interrupt terminal of the timer and is called Channel_1_ISR as can be seen below.

The ISR runs once since the led state is only toggled once but not after that. What am I missing?

 

CY_ISR(Channel_1_ISR_Handler){
   
    Channel_1_Count=Channel_1_Timer_ReadCapture();
    onboard_led_Write(~onboard_led_Read());
    Channel_1_ISR_ClearPending();
}

int main(void)
{
    CyGlobalIntEnable;
    onboard_led_Write(~onboard_led_Read());
   Channel_1_Timer_Start();
   Channel_1_Timer_EnableTrigger();
   Channel_1_ISR_Enable();
   Channel_1_ISR_StartEx(Channel_1_ISR_Handler);

for(;;){}

}

Hi.

In my project I need a DMA to write values to a Timer counter register (according to some SW logic).

When I implement this using a UDB-based Timer - it works.

When I changed the Timer to Fixed - it doesn't.

Is there some limitation regarding DMA and Fixed peripherals?

Thanks.

Hi.

I use the Kitprog as a programmer for my board. Occasionally, when plugging the Kitprog to the PC, it doesn't automatically recognize the target, and goes into the Mass Storage mode.

Is there a way to disable this mode? I want the Kitprog to connect itself only as a "normal" programmer/debugger. This "5 seconds reset button hold" drives me crazy...

Thanks.

Hello, All! I am new in PSoC world. Currently I am working on a project that require accurate frequency measurement. Since PSOC5 internal clock doesn’t accurate, using external crystal oscillator will provide  more accurate measurement.

I have an external crystal with part number ECS-240-20-33-CKM-TR, which is 24 Mhz crystal and 20 pF load capacitance. I already soldered this crystal on the PCB board next to PSOC chip at Pin 15[0] and Pin 15[1](I have attached schematic). I choose two 22 pF capacitors as load.

I followed procedure (AN54439_External crystal oscillators) and tried to enable this external crystal oscillator in PSOC creator, but it never work.  (See attached setup).

I don’t know why that it doesn’t work. Thank you for any help, I will really appreciate.  

Hi everyone,

We have a S6SAL211A94SA2001 (Intelligent LED Lighting Starter Kit for BLE Communication) and we are trying to communicate with it through a linux application. So far we have managed to connect to it using bluetoothctl and it used to appear with the name 'Cypress Demo'. Now I want to ask two things:

1. For an unknown reason, it has somehow lost it's name. It advertises itself with it's MAC address but the name has been replaced with the ASCII 0x01 character. How can I set it's name to the original string. It can still be connected with bluetoothctl but not through the android app.

2. What steps should I take to create a linux based application for controlling the leds via bluetooth? As I have already stated that it only connects when we are using bluetoothctl, other tools like gatttool, hcitool, pyblue library of python have all failed to connect to this module. Also, I can see only three characteristics of this module when connected with bluetoothctl. How can I use those characteristics to manually send led controlling instructions to the module?

Thanks.

Ahsan

I want to use TX8 (RS232) in PSoC1. However, in the result window, broken characters are output. I want to know how to set up hardware and software(please check attached my project file)