工具使用的是IAR,创建工程,导入TI-RTOS Examples中的UART Echo的例程。
问题:
1.在Debug模式下,在任务中设置断点,程序可以进入到echoFxn()任务中,在串口助手中也能打印调试信息
2.在运行模式下,程序则不进入echoFxn()任务中,串口助手没有任何调试信息。请问是什么原因?
以下为例程代码:主程序中点亮了一个灯,echoFxn()任务中去灭这个灯,这样更方便观察
请各位大佬帮忙解答,万分感谢!
/*
* ======== echoFxn ========
* Task for this function is created statically. See the project's .cfg file.
*/
Void echoFxn(UArg arg0, UArg arg1)
{
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 = 9600;
uart = UART_open(Board_UART0, &uartParams);
PIN_setOutputValue(ledPinHandle, Board_LED1, 0);
Task_sleep(333000/10);
if (uart == NULL) {echo
System_abort("Error opening the UART");
}
UART_write(uart, echoPrompt, sizeof(echoPrompt));
/* Loop forever echoing */
while (1) {
UART_read(uart, &input, 1);
UART_write(uart, &input, 1);
UART_write(uart, &input, 1);
}
}
/*
* ======== main ========
*/
int main(void)
{
Task_Params taskParams;
/* Call board init functions */
Board_initGeneral();
Board_initUART();
/* Construct BIOS objects */
Task_Params_init(&taskParams);
taskParams.stackSize = TASKSTACKSIZE;
taskParams.stack = &task0Stack;
Task_construct(&task0Struct, (Task_FuncPtr)echoFxn, &taskParams, NULL);
/* Open LED pins */
ledPinHandle = PIN_open(&ledPinState, ledPinTable);
if(!ledPinHandle) {
System_abort("Error initializing board LED pins\n");
}
PIN_setOutputValue(ledPinHandle, Board_LED1, 1);
/* This example has logging and many other debug capabilities enabled */
System_printf("This example does not attempt to minimize code or data "
"footprint\n");
System_flush();
System_printf("Starting the UART Echo 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);
}