[参考译文] LAUNCHXL-CC1312R1：UART PRINT ON 按钮按压中断

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请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1108186/launchxl-cc1312r1-uart-print-on-button-press-interrupt

器件型号：LAUNCHXL-CC1312R1
主题中讨论的其他器件：CC1312R

您好！

按下 launchpad 上的用户按钮时、我正在尝试在终端上打印字符串。但代码不起作用。

请帮助了解我在这里遗漏的内容。

#include <stdint.h>
#include <stddef.h>
#include <unistd.h>
#include <string.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART2.h>

/* Driver configuration */
#include "ti_drivers_config.h"

UART2_Handle uart;
UART2_Params uartParams;

const char b[] = "Positive\r\n";
const char c[] = "Negative\r\n";

size_t bytes_written;

void gpioButtonIsr(uint_least8_t index)
{
    GPIO_disableInt(CONFIG_GPIO_BUTTON_0);
    GPIO_toggle(CONFIG_GPIO_LED_0);
    UART2_write(uart,b,sizeof(b),&bytes_written);
    GPIO_enableInt(CONFIG_GPIO_BUTTON_0);
}

/*
 *  ======== mainThread ========
 */

void *mainThread(void *arg0)
{
    const char welcome[] = "Welcome....\r\n";
    /* Call driver init functions */
    GPIO_init();
    UART2_Params_init(&uartParams);
    uartParams.readMode = UART2_Mode_CALLBACK;
    uartParams.writeMode = UART2_Mode_CALLBACK;
    uartParams.baudRate = 115200;

    uart = UART2_open(CONFIG_UART2_0,&uartParams);

    if(uart==NULL){while(1);}

    /* Configure the LED and button pins */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
    GPIO_setConfig(CONFIG_GPIO_BUTTON_0, GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_FALLING);
    GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);

    /* Turn on user LED */
    GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);

    /* Install Button callback */
    GPIO_setCallback(CONFIG_GPIO_BUTTON_0, gpioButtonIsr);
    GPIO_enableInt(CONFIG_GPIO_BUTTON_0);

    UART2_write(uart,welcome,sizeof(welcome),&bytes_written);

    return(NULL);
}

3 年多前

0 admin 3 年多前

TI__Guru**** 2595800 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

我认为 UART2没有打开。不过、我们非常感谢您的帮助。谢谢

0 admin 3 年多前

TI__Guru**** 2595800 points

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

我从6_10 SDK 中获取了 uart2echo 示例、并对 uart2echo.c 文件进行了以下修改

#include <stdint.h>
#include <stddef.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/UART2.h>

/* Driver configuration */
#include "ti_drivers_config.h"

#include <ti/devices/DeviceFamily.h>
#include DeviceFamily_constructPath(driverlib/cpu.h)

#include <semaphore.h>

static sem_t buttonSemaphore;

void buttonCallbackFunction(uint_least8_t index) {

    /* Simple debounce logic, only toggle if the button is still pushed (low) */
    CPUdelay((uint32_t)((48000000/3)*0.050f));
    if (!GPIO_read(index)) {
        sem_post(&buttonSemaphore);
    }
}

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    const char   uartMessage[] = "Writing on UART :-)\r\n";
    UART2_Handle uart;
    UART2_Params uartParams;
    size_t       bytesWritten = 0;
    int retc;

    /* Call driver init functions */
    GPIO_init();

    /* Configure the LED pin and button pin */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
    GPIO_setConfig(CONFIG_GPIO_BTN1, GPIO_CFG_IN_PU | GPIO_CFG_IN_INT_FALLING);

    /* Install Button callback */
     GPIO_setCallback(CONFIG_GPIO_BTN1, buttonCallbackFunction);

     /* Enable interrupts */
     GPIO_enableInt(CONFIG_GPIO_BTN1);

     retc = sem_init(&buttonSemaphore, 0, 0);
     if (retc != 0) {
         while (1);
     }

    /* 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);

    while(1)
    {
        /* Wait for a button press */
        retc = sem_wait(&buttonSemaphore);
        if (retc == -1) {
            while (1);
        }

        UART2_write(uart, uartMessage, sizeof(uartMessage), &bytesWritten);

    }
}

在 CC1312R LP 上测试了代码并按预期工作。

Siri

低于 1GHz（参考译文帖）

低于 1GHz（参考译文帖）(Read Only)

[参考译文] LAUNCHXL-CC1312R1：UART PRINT ON 按钮按压中断