Delay update log(?)

[cha8138]

Hi.
Currently, I am working on registering values on log and receiving data using python3 library.

I tried to update integer data(65 to 90) in order and monitored the received data with Crazyflie PC client.
But the received data wasn't matching with the data I updated.

Here is my code and result.

Code: Select all

#define DEBUG_MODULE "uartDeck"
#include "debug.h"

#include "deck.h"
#include "deck_core.h"

#include "log.h"
#include "FreeRTOS.h"
#include "stdbool.h"
#include "timers.h"

#include "uart1.h"
#include "console.h"
#include "task.h"


//static xTimerHandle timer;
char cData;
char i=65;

void receiveData(void *param)
{

	//DEBUG_PRINT("Running Uart:\n");
	while(1)
	{
		cData=i;
		i++;
		if(i==90)
			i=65;

	}

}


static void uartCommInit(DeckInfo *info)
{
  uart1Init(9600);
  xTaskCreate(receiveData, "commUart",configMINIMAL_STACK_SIZE, NULL, /*priority*/1, NULL);
  DEBUG_PRINT("Inited uartComm deck.\n");
}


static const DeckDriver uartCommDriver = {
  .name = "commUart",
  .usedGpio = 0,
  .init = uartCommInit,
};

DECK_DRIVER(uartCommDriver);

LOG_GROUP_START(myUartData)
LOG_ADD(LOG_UINT8, character, &cData)
LOG_GROUP_STOP(myUartData)

Is there any problem in my code? or Is there any limit on the rate of updating data?

Thank you.

[tobias]

Yes the data update is limited to the specified sample rate and currently limited to every 10ms. So you are seeing an aliasing effect.

[cha8138]

Yes the data update is limited to the specified sample rate and currently limited to every 10ms. So you are seeing an aliasing effect.

Oh, I see. Thank you.