Tiva C Uart Changing UARTCharPutNonBlocking

Hello Selim,

The UARTprintf works on TIVA as much as it works on Stellaris parts. Can you check if the FIFO is enabled in UART otherwise that may be the reason it would be missing characters.

Regards

Amit

Amit Ashara said:

Hello Selim,

The UARTprintf works on TIVA as much as it works on Stellaris parts. Can you check if the FIFO is enabled in UART otherwise that may be the reason it would be missing characters.

Regards

Amit

Thanks for ur help.

How I will found UARTprintf example for TIVA. I searched I found for stellaris they didnt work.

#include <stdint.h>
#include <stdbool.h>
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_gpio.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "driverlib/adc.h"
 
void UARTAyarla(void)
{
	SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
 
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); 
 
	UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200, (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));
 
	GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
 
	UARTFIFOEnable(UART0_BASE); .
 
	UARTEnable(UART0_BASE);
}
 
void ADCAyarla(void)
{
	SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0); 
 
	ADCHardwareOversampleConfigure(ADC0_BASE, 64); 
																								
	ADCSequenceDisable(ADC0_BASE, 1); 
 
	ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0); 
																															  // interrupt'ın değerini 0 yaparak en yüksek önceliği veriyoruz.
 
 
	ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH0);
	ADCSequenceStepConfigure(ADC0_BASE, 1, 1, ADC_CTL_CH1); 
	ADCSequenceStepConfigure(ADC0_BASE, 1, 2, ADC_CTL_CH2); 
	ADCSequenceStepConfigure(ADC0_BASE, 1, 3, ADC_CTL_TS | ADC_CTL_IE | ADC_CTL_END);
																																									//interrupt'ın açılarak konfigürasyonun tamamlanması
 
	ADCSequenceEnable(ADC0_BASE, 1); 
 
int main(void) 
{
	uint32_t ulADC0Value[8]; 
 
	char a[4],b[4],c[4],d[4]; 
	SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN|SYSCTL_XTAL_16MHZ); 
	UARTAyarla();
 
	ADCAyarla();
 
	while(1)
	{
		ADCIntClear(ADC0_BASE, 1);
		ADCProcessorTrigger(ADC0_BASE, 1);
 
		while(!ADCIntStatus(ADC0_BASE, 1, false)) 
		{
		}
 
		ADCSequenceDataGet(ADC0_BASE, 1, ulADC0Value); 
 
		UARTCharPutNonBlocking(UART0_BASE, '@');
		UARTCharPutNonBlocking(UART0_BASE, ','); 
 
 
		a[3] = ulADC0Value[0]%10 + 48;
		ulADC0Value[0] = ulADC0Value[0]/10 ;
		a[2] = ulADC0Value[0]%10 + 48;
		ulADC0Value[0] = ulADC0Value[0]/10 ;
		a[1] = ulADC0Value[0]%10 + 48;
		a[0] = ulADC0Value[0]/10 + 48;
 
		b[3] = ulADC0Value[1]%10 + 48;
		ulADC0Value[1] = ulADC0Value[1]/10 ;
		b[2] = ulADC0Value[1]%10 + 48;
		ulADC0Value[1] = ulADC0Value[1]/10 ;
		b[1] = ulADC0Value[1]%10 + 48;
		b[0] = ulADC0Value[1]/10 + 48;
 
		c[3] = ulADC0Value[2]%10 + 48;
		ulADC0Value[2] = ulADC0Value[2]/10 ;
		c[2] = ulADC0Value[2]%10 + 48;
		ulADC0Value[2] = ulADC0Value[2]/10 ;
		c[1] = ulADC0Value[2]%10 + 48;
		c[0] = ulADC0Value[2]/10 + 48;
 
		d[3] = ulADC0Value[3]%10 + 48;
		ulADC0Value[3] = ulADC0Value[3]/10 ;
		d[2] = ulADC0Value[3]%10 + 48;
		ulADC0Value[3] = ulADC0Value[3]/10 ;
		d[1] = ulADC0Value[3]%10 + 48;
		d[0] = ulADC0Value[3]/10 + 48;
 
		UARTCharPutNonBlocking(UART0_BASE, a[0]); 
		UARTCharPutNonBlocking(UART0_BASE, a[1]);
		UARTCharPutNonBlocking(UART0_BASE, a[2]);
		UARTCharPutNonBlocking(UART0_BASE, a[3]);
 
		UARTCharPutNonBlocking(UART0_BASE, ','); // 
 
		SysCtlDelay(5000);
 
		UARTCharPutNonBlocking(UART0_BASE, b[0]); 
		UARTCharPutNonBlocking(UART0_BASE, b[1]);
		UARTCharPutNonBlocking(UART0_BASE, b[2]);
		UARTCharPutNonBlocking(UART0_BASE, b[3]);
 
		UARTCharPutNonBlocking(UART0_BASE, ','); // 
 
		SysCtlDelay(5000);
 
		UARTCharPutNonBlocking(UART0_BASE, c[0]); 
		UARTCharPutNonBlocking(UART0_BASE, c[1]);
		UARTCharPutNonBlocking(UART0_BASE, c[2]);
		UARTCharPutNonBlocking(UART0_BASE, c[3]);
 
		UARTCharPutNonBlocking(UART0_BASE, ','); 
 
		SysCtlDelay(5000);
 
		UARTCharPutNonBlocking(UART0_BASE, d[0]);
		UARTCharPutNonBlocking(UART0_BASE, d[1]);
		UARTCharPutNonBlocking(UART0_BASE, d[2]);
		UARTCharPutNonBlocking(UART0_BASE, d[3]);
 
		SysCtlDelay(5000);
 
		UARTCharPutNonBlocking(UART0_BASE, '\n'); 
 
		SysCtlDelay(1000000); 
	}

This is my code.

Hi,

Also the ADC pins must be configured as analog ones, after enabling the ADC peripheral. 

Petrei

Petrei said:

Hi,

Also the ADC pins must be configured as analog ones, after enabling the ADC peripheral. 

Petrei

Hi

How i Will do it?

Thanks.

Amit Ashara said:

Hello Selim,

My suspicion is that at the rate you are writing to the buffer, at one point you may start losing the data. The FIFO is not a very large one.

I am not sure which Tiva Device you are using but the following example code will show how to use the UARTprintf on Tiva Devices.

C:\ti\TivaWare_C_Series-2.1.0.12573\examples\boards\ek-tm4c123gxl\hello

Regards

Amit

Hi.

Thanks for help. I used hello code and I used Uartprintf function. 

Thanks.

Hi,

Use the GPIOPinTypeADC(uint32_t ui32Port, uint8_t ui8Pins) function.

Read also each function comment in driverlib before its use to better understand all. This will help you more than you can imagine now.

Petrei