PSoC™ 5, 3 & 1 Forum Discussions

Hello,

I am writing a custom component to drive WS2812 pixels with as less hardware as possible. I am already done with Verilog part, but I can't get DMA working. When I write to FIFO using CPU, it is working as expected. When I try my DMA code, nothing happens.

Does anyone see what I am doing wrong? I need to use DMA. Simultaneously driving 24 strings + generating patterns seems like too much for CPU only approach.

Thanks in advance,

Stanislav

#include "cytypes.h"
#include "cyfitter.h"
#include "`$INSTANCE_NAME`_DMA_dma.h"
#define `$INSTANCE_NAME`_Data_Reg `$INSTANCE_NAME`_WS2812Internal_Shifter_u0__F0_REG
#define `$INSTANCE_NAME`_DMAStatus_Active 0
#define `$INSTANCE_NAME`_DMAStatus_Completed 1
#define `$INSTANCE_NAME`_DMAStatus_Failure -1
void `$INSTANCE_NAME`_InitDMA();
void `$INSTANCE_NAME`_InitIRQ(cyisraddress isr);
void `$INSTANCE_NAME`_SendDMA(uint8_t *data, uint16_t count);
uint8_t `$INSTANCE_NAME`_GetDMAStatus();
void `$INSTANCE_NAME`_WaitDMAComplete();

#include <project.h>
#include "cytypes.h"
#include "stdlib.h"
#include "cyfitter.h"
#include "`$INSTANCE_NAME`_WS2812.h"
uint8_t `$INSTANCE_NAME`_DmaChannel;
uint8_t `$INSTANCE_NAME`_DmaTd;
void `$INSTANCE_NAME`_InitDMA()
{
    `$INSTANCE_NAME`_DmaChannel = `$INSTANCE_NAME`_DMA_DmaInitialize(1,1,HI16(CYDEV_SRAM_BASE),HI16(CYDEV_PERIPH_BASE));
    `$INSTANCE_NAME`_DmaTd = CyDmaTdAllocate();
}
void `$INSTANCE_NAME`_InitIRQ(cyisraddress isr)
{
    `$INSTANCE_NAME`_IsrTxComplete_StartEx(isr);
}
void `$INSTANCE_NAME`_SendDMA(uint8_t *data, uint16_t count)
{
    CyDmaTdSetConfiguration(`$INSTANCE_NAME`_DmaTd,count,`$INSTANCE_NAME`_DmaTd,CY_DMA_TD_INC_SRC_ADR | WS2812_1_DMA__TD_TERMOUT_EN );
    CyDmaTdSetAddress(`$INSTANCE_NAME`_DmaTd,LO16((uint32)data),LO16(`$INSTANCE_NAME`_Data_Reg));
    CyDmaChSetInitialTd(`$INSTANCE_NAME`_DmaChannel,`$INSTANCE_NAME`_DmaTd);
    CyDmaChEnable(`$INSTANCE_NAME`_DmaChannel,1);
    CyDmaChSetRequest(`$INSTANCE_NAME`_DmaChannel,CPU_REQ);
}
uint8_t `$INSTANCE_NAME`_GetDMAStatus()
{
    uint8_t state;
    if(CyDmaChStatus(`$INSTANCE_NAME`_DmaChannel,NULL,&state) == CYRET_SUCCESS)
    {
        if((state && STATUS_CHAIN_ACTIVE) == STATUS_CHAIN_ACTIVE)
            return 0;
        else
            return 1;
    }
    return -1;
}
void `$INSTANCE_NAME`_WaitDMAComplete()
{
    uint8_t state;
    while(1)
    {
        CyDmaChStatus(`$INSTANCE_NAME`_DmaChannel,NULL,&state);
        if((state & STATUS_CHAIN_ACTIVE) == 0)
            return;
    }
}

This is weird problem faced by me. I stucked from days. I have given a task to add some features like pwm to the firmware. I am using 29666 psoc1 chip 32kb . Almost 95% chip is used. however there is some place for pwm16 module to be added.

My problem is I successfully added the pwm 16 module and updated the boot.tpl for appropriate isr on correct block interrupt but still my code under ISR routine doesnt get executed as i am not getting the interrupt call within the firmware.

Is it that if chip is almost full with firmware starts giving error.

Hello

I am having some problems connecting the ice cube with the pod

I could download a design but I could not connect the pod  and it shows me an error

"could not detect the pod"

The power led of the pod turns on for a few seconds but vanishes  when connection is attempt

Thanks for any help....I would like to power my pod to make a circuit debug

Hi...

On my PCB MCU CY8C26643-24PI is mounted and which is working with software.

And now that MCU gone faulty and i want replace it with new fresh MCU.

So for that i have programme it or will it work directly.

Already we are giving commands from PC.

I want to use timer 8 capture and  terminal count isr in my code .  how to to that. psoc designer 5.4 gives opportunity to either use capture isr or terminal isr. but is there any way to use both isr at once in firmware.

My psoc1 29666 is almost out of resources and i cant generate the pwm using the hardware digital block. I want to use capture isr and terminal count isr to toggle the output pin  for desired pwm. pwm frequency is very low in few hz. so my firmware will handle. But i can see how to generate the two simultaneous isrs in firmware.

Hi,

I have 8 digital outputs that are on various pins of the 5LP that I want to control as a port using an 8-bit variable in code.

I created a digital output pin then then set number of pins to 8. I named the port "POWER"

Next I selected "Display as Bus" mapping.

Then I went to "pins" tab and set the pin designation.

I am having trouble setting the value of "PORT" in code.

The intellisense in PSOC creator shows "POWER_0, POWER_1 etc but I cannot work out correct syntax to do equivalent of POWER_Write(23) for instance.

Have I set this up wrong or simply not using corect syntax?

Thanks

I send info thru a UART and I see that the program stays in Main. I think the timer is not running. I have attached a bundle.

thanks for any advice.

Hi,

I am working on SPI Slave communication using SPI Slave component on PSoC 5LP IC.

SPI Slave component is configured as 8-bit word size CPHA = 0, CPOL = 0 with 4-byte Rx and Tx buffers.

The first byte in the communication determines what will be transmitted afterwards, if bytes will be subsequently sent or received.

Any number of bytes can be transferred. The transmission will be terminated after the SS (Slave Select) signal deaserted, when the waiting time for the instruction byte is set again.
How is it possible to capture deaserting SS singal via SPI Slave component?

There is no flag in the Rx and Tx Status registers to capture the beginning or end of the communication specified by the SS signal.

Thank you

Milos

Dear Sirs and Madams,

We would like to use SysTick Timer of PSoC5LP, However I can't use it well.

Is there a sample project that turns on the LED with a SysTick timer interrupt?

Regards,