Part Number: EK-TM4C1294XL
Tool/software: TI-RTOS
Hi,
How can initalize Hwi_create to handle the UART0 interrupt?
I came across multiple threads, but non of them solved my issue. I have setup the Hwi and passed the uart0Func as a (Hwi_FuncPtr). but it doesn't execute the function at all. I'm following the uartecho example, but instead of creating a task, I wanna use Hwi_create. I understand that uartecho and UART_Open uses Hwi_create under the hood, but I need to do it manualy. Any hints will be appreciated. Thank you.
here is the source file:
/* XDCtools Header files */
#include <xdc/std.h>
#include <xdc/runtime/System.h>
#include <xdc/runtime/System.h>
#include <xdc/runtime/Error.h>
/* BIOS Header files */
#include <ti/sysbios/BIOS.h>
#include <ti/sysbios/knl/Task.h>
#include <ti/sysbios/hal/Timer.h>
#include <ti/sysbios/knl/Semaphore.h>
#include <ti/sysbios/knl/Swi.h>
#include <ti/sysbios/knl/Queue.h>
#include <ti/sysbios/hal/Hwi.h>
/* TI-RTOS Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART.h>
#include <ti/drivers/uart/UARTTiva.h>
/* Board Header file */
#include "Board.h"
#include "inc/hw_ints.h"
#define TASKSTACKSIZE 512
void uart0Func(UArg arg0, UArg arg1) {
System_printf("UART is set\n");
char input;
UART_Handle uart;
UART_Params uartParams;
const char echoPrompt[] = "\fEchoing characters:\r\n";
/* Create a UART with data processing off. */
UART_Params_init(&uartParams);
uartParams.writeDataMode = UART_DATA_BINARY;
uartParams.readDataMode = UART_DATA_BINARY;
uartParams.readReturnMode = UART_RETURN_FULL;
uartParams.readEcho = UART_ECHO_OFF;
uartParams.baudRate = 115200;
uart = UART_open(Board_UART0, &uartParams);
if (uart == NULL) System_abort("Error opening the UART\n");
else System_printf("UART is set\n");
UART_write(uart, echoPrompt, sizeof(echoPrompt));
/* Loop forever echoing */
while (1) {
UART_read(uart, &input, 1);
UART_write(uart, &input, 1);
}
}
void initHwiInt() {
/* Turn on user LED */
GPIO_write(Board_LED0, Board_LED_ON);
Hwi_Params hwiParams;
Hwi_Handle HwiUART;
Hwi_Params_init(&hwiParams);
hwiParams.eventId = INT_UART0_TM4C129;
hwiParams.enableInt = true;
HwiUART = Hwi_create(INT_UART0_TM4C129, (Hwi_FuncPtr)uart0Func, &hwiParams, NULL);
if (HwiUART == NULL) System_printf("Hwi create failed\n");
else System_printf("Hwi is set\n");
Hwi_enableInterrupt(INT_UART0_TM4C129);
}
/* main */
int main(void) {
/* Call board init functions */
Board_initGeneral();
Board_initGPIO();
Board_initUART();
initHwiInt();
System_printf("Starting the example\nSystem provider is set to SysMin. "
"Halt the target to view any SysMin contents in ROV.\n");
/* SysMin will only print to the console when you call flush or exit */
System_flush();
/* Start BIOS */
BIOS_start();
return (0);
}
