[参考译文] CC3220SF-LAUNCHXL：在 Simple Link WiFi CC3220SF 中从 TMP006接收负温度

嘿  Ajaykumar、

为了 重新生成 您的问题、您可以向 我提供您的 SDK 版本吗？

此致、

AVI E

尊敬的 Avi Epstein：

我将使用的 SDK 如下 simplelink_cc32xx_sdk_6_10_00_05

谢谢。此致、

Ajaykumar V.

好的、我们将尝试重现并返回给您。

此致、

AVI E

您好、Avi E：

下面是我根据要求修改的代码

请在下方找到：

/*
 *  ======== i2ctmp.c ========
 */
#include <stdint.h>
#include <stddef.h>
#include <unistd.h>
#include <stdio.h>

/* Driver Header files */
#include <ti/drivers/GPIO.h>
#include <ti/drivers/I2C.h>
#include <ti/display/Display.h>

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

#define TASKSTACKSIZE       640

/* Temperature result registers */
#define TMP006_RESULT_REG          0x0001
#define TMP11X_RESULT_REG          0x0000

/* I2C slave addresses */
#define TMP006_LAUNCHPAD_ADDR      0x41
#define TMP11X_BASSENSORS_ADDR     0x48
#define TMP116_LAUNCHPAD_ADDR      0x49

/* Number of supported sensor iterations */
#define TMP_COUNT           3

/*
 * Data structure containing currently supported I2C TMP sensors.
 * Sensors are ordered by descending preference.
 */
static const struct {
    uint8_t address;
    uint8_t resultReg;
    char *id;
} sensors[TMP_COUNT] = {
    { TMP11X_BASSENSORS_ADDR, TMP11X_RESULT_REG, "11X" },
    { TMP116_LAUNCHPAD_ADDR,  TMP11X_RESULT_REG, "116" },
    { TMP006_LAUNCHPAD_ADDR,  TMP006_RESULT_REG, "006" }
};

static uint8_t slaveAddress;
static Display_Handle display;

static void i2cErrorHandler(I2C_Transaction *transaction,
    Display_Handle display);

/*
 *  ======== mainThread ========
 */
void *mainThread(void *arg0)
{
    uint16_t        sample;
    int16_t         temperature_raw;
    float           temperature_c;
    uint8_t         txBuffer[1];
    uint8_t         rxBuffer[2];
    int8_t          i;
    I2C_Handle      i2c;
    I2C_Params      i2cParams;
    I2C_Transaction i2cTransaction;

    /* Call driver init functions */
    //Display_init();
    GPIO_init();
    I2C_init();

    /* Configure the LED and if applicable, the TMP_EN pin */
    GPIO_setConfig(CONFIG_GPIO_LED_0, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_LOW);
#ifdef CONFIG_GPIO_TMP_EN
    GPIO_setConfig(CONFIG_GPIO_TMP_EN, GPIO_CFG_OUT_STD | GPIO_CFG_OUT_HIGH);
    /* Allow the sensor to power on */
    sleep(1);
#endif

    /* Open the UART display for output */
/*    display = Display_open(Display_Type_UART, NULL);
    if (display == NULL) {
        while (1);
    }
*/
    /* Turn on user LED */
    GPIO_write(CONFIG_GPIO_LED_0, CONFIG_GPIO_LED_ON);
    printf("Starting the i2ctmp example\n");

    /* Create I2C for usage */
    I2C_Params_init(&i2cParams);
    i2cParams.bitRate = I2C_400kHz;
    i2c = I2C_open(CONFIG_I2C_TMP, &i2cParams);
    if (i2c == NULL) {
        printf("Error Initializing I2C\n");
        while (1);
    }
    else {
        printf("I2C Initialized!\n");
    }

    /* Common I2C transaction setup */
    i2cTransaction.writeBuf   = txBuffer;
    i2cTransaction.writeCount = 1;
    i2cTransaction.readBuf    = rxBuffer;
    i2cTransaction.readCount  = 0;

    /*
     * Determine which I2C sensors are present by querying known I2C
     * slave addresses.
     */
    for (i = TMP_COUNT - 1; i >= 0; i--) {
        i2cTransaction.slaveAddress = sensors[i].address;
        txBuffer[0] = sensors[i].resultReg;

        if (I2C_transfer(i2c, &i2cTransaction)) {
            slaveAddress = sensors[i].address;
            printf("Detected TMP%s sensor with slave"
            " address 0x%x\n", sensors[i].id, sensors[i].address);
        }
        else {
            i2cErrorHandler(&i2cTransaction, display);
        }
    }

    /* If we never assigned a slave address */
    if (slaveAddress == 0) {
        printf("Failed to detect a sensor!");
        I2C_close(i2c);
        while (1);
    }

    printf("\nUsing last known sensor for samples.\n");
    i2cTransaction.slaveAddress = slaveAddress;

    /* Take 20 samples and print them out onto the console */
    i2cTransaction.readCount  = 2;
    for (sample = 0; sample < 20; sample++) {
        if (I2C_transfer(i2c, &i2cTransaction)) {
            /*
             * Extract degrees C from the received data;
             * see TMP sensor datasheet
             */
            //printf("rxBuffer[0]: %#x, rxBuff[1] : %#x, ", rxBuffer[0], rxBuffer[1]);
            temperature_raw = (rxBuffer[0] << 8) | (rxBuffer[1]);
            //printf("Raw_temperature after zipping : %#X, ", temperature_raw);

            /*
             * If the MSB is set '1', then we have a 2's complement
             * negative value which needs to be sign extended
             */
            if (rxBuffer[0] & 0x80) {
                temperature_raw |= 0xF000;
            }
            /* converting raw temperature (integer) to physical temperature (float) 
             * as per data sheet of TMP006 (SBOS518E –MAY 2011–REVISED APRIL 2015)
             */
            temperature_c = temperature_raw * 0.0078125; 

            printf("Sample %u: %.2f (C)\n",
                sample, temperature_c);
        }
        else {
            i2cErrorHandler(&i2cTransaction, display);
        }

        /* Sleep for 1 second */
        sleep(1);
    }

    I2C_close(i2c);
    printf("I2C closed!");

    return (NULL);
}

/*
 *  ======== i2cErrorHandler ========
 */
static void i2cErrorHandler(I2C_Transaction *transaction,
    Display_Handle display)
{
    switch (transaction->status) {
    case I2C_STATUS_TIMEOUT:
        printf("I2C transaction timed out!\n");
        break;
    case I2C_STATUS_CLOCK_TIMEOUT:
        printf("I2C serial clock line timed out!\n");
        break;
    case I2C_STATUS_ADDR_NACK:
        printf("I2C slave address 0x%x not"
            " acknowledged!\n", transaction->slaveAddress);
        break;
    case I2C_STATUS_DATA_NACK:
        printf("I2C data byte not acknowledged!\n");
        break;
    case I2C_STATUS_ARB_LOST:
        printf("I2C arbitration to another master!\n");
        break;
    case I2C_STATUS_INCOMPLETE:
        printf("I2C transaction returned before completion!\n");
        break;
    case I2C_STATUS_BUS_BUSY:
        printf("I2C bus is already in use!\n");
        break;
    case I2C_STATUS_CANCEL:
        printf("I2C transaction cancelled!\n");
        break;
    case I2C_STATUS_INVALID_TRANS:
        printf("I2C transaction invalid!\n");
        break;
    case I2C_STATUS_ERROR:
        printf("I2C generic error!\n");
        break;
    default:
        printf("I2C undefined error case!\n");
        break;
    }
}

谢谢。此致、

Ajaykumar V.

您好、Avi E：

新的7.10 SDK 具有 noRTOS i2ctmp 示例，其中 SysConfig 中的所有内容均已设置

"CCS"的名称中没有用于复制仅.SysConfig GCC 编译器、IAR 编译器和 TI Clang 编译器的文件夹  

在.sysconf 中显示方法有一个"使用硬件"部分，其中将设置为"XDS110 UART"。

在这里、您可以连接终端

[/报价]

我在下面添加了缺失的部分。

在构建和运行之后、我没有在 Putty 上得到任何打印语句

谢谢。此致、

Ajaykumar V.

我不在办公室

您能否提供使用 COM 7的指南以便我明天可以尝试一下。

谢谢。此致、

Ajaykumar V.

您好、Avi E：

供您参考：在全新的 7.10 SDK 中

在名称"CCS"下没有用于复制仅.SysConfig GCC 编译器、IAR 编译器、TI Clang 编译器的文件夹 

我尝试使用 COM 端口7、它不起作用。  

我在 传感器附近没有高温物体时得到的输出(即、不是预期值的室温)  

我仍然获得了如下所示的相同结果：

我缺少任何东西吗？

我使用的是 Code Composer Studio 版本：12.1.0.00007  

谢谢。此致、

Ajaykumar V.

好的、现在打印到终端的操作正常、您可以在连接到 COM7的 Putty 输出中看到它。 您为我提供的代码在我的电路板上可以正常工作、开箱即用示例也可以正常工作。

您是否进行了任何其他软件或硬件更改？

此致、

AVI E

您好、Avi E：

我尚未对硬件进行任何更改，因为在软件方面运行了开箱即用的示例代码温度输出如上所示(i.e，-2 (c))，

之后、我尝试了修改后的代码、也输出了我得到的代码、范围是-2.** (c)至-3.**(c)(如果在 ESD 之后轻轻摇动实验板)、由于我的目的是测量室温、没有任何高温物体留在传感器附近。  

谢谢。此致、

Ajaykumar V.