Tool/software:
Hello
I run the demo "uart2echo_LP_EM_CC2674P10_nortos_ticlang",
int main(void)
{
Board_init();
// initUART();
/* Start NoRTOS */
NoRTOS_start();
/* Call mainThread function */
mainThread(NULL);
while (1) {}
}
void *mainThread(void *arg0)
{
char input;
const char echoPrompt[] = "Echoing characters:\r\n";
UART2_Handle uart;
UART2_Params uartParams;
size_t bytesRead;
size_t bytesWritten = 0;
uint32_t status = UART2_STATUS_SUCCESS;
/* Call driver init functions */
GPIO_init();
/* Configure the LED pin */
GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
/* Create a UART where the default read and write mode is BLOCKING */
UART2_Params_init(&uartParams);
uartParams.baudRate = 115200;
uart = UART2_open(CONFIG_UART2_0, &uartParams);
if (uart == NULL)
{
/* UART2_open() failed */
while (1) {}
}
/* Turn on user LED to indicate successful initialization */
GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);
UART2_write(uart, echoPrompt, sizeof(echoPrompt), &bytesWritten);
/* Loop forever echoing */
while (1)
{
bytesRead = 0;
while (bytesRead == 0)
{
status = UART2_read(uart, &input, 1, &bytesRead);
if (status != UART2_STATUS_SUCCESS)
{
/* UART2_read() failed */
while (1) {}
}
}
bytesWritten = 0;
while (bytesWritten == 0)
{
status = UART2_write(uart, &input, 1, &bytesWritten);
if (status != UART2_STATUS_SUCCESS)
{
/* UART2_write() failed */
while (1) {}
}
}
}
}
when I test the demo, Why enter this function
void
PRCMDeepSleep(void)
{
// Enable deep-sleep.
HWREG(NVIC_SYS_CTRL) |= NVIC_SYS_CTRL_SLEEPDEEP;
// Wait for an interrupt.
CPUwfi();
// Disable deep-sleep so that a future sleep will work correctly.
HWREG(NVIC_SYS_CTRL) &= ~(NVIC_SYS_CTRL_SLEEPDEEP);
}
