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English | 简体中文 | 繁體中文

LibDriver BMP388

API License

BMP388是一款成熟的帶有壓力和溫度測量的數字傳感器。傳感器1Hz、3.4uA的測量模式可以使其工作在諸多電池驅動的設備，例如手機、GPS或者手錶。 BMP388可被用在飛行玩具、無人機、手機平板GPS、導航系統、便攜式健康設備、室內監測和手錶等。

LibDriver BMP388是LibDriver推出的BMP388全功能驅動，該驅動提供壓強溫度連續讀取、壓強溫度單次讀取、中斷讀取和FIFO採集等功能。

目錄

說明

/src目錄包含了LibDriver BMP388的源文件。

/interface目錄包含了LibDriver BMP388與平台無關的IIC、SPI總線模板。

/test目錄包含了LibDriver BMP388驅動測試程序，該程序可以簡單的測試芯片必要功能。

/example目錄包含了LibDriver BMP388編程範例。

/doc目錄包含了LibDriver BMP388離線文檔。

/datasheet目錄包含了BMP388數據手冊。

/project目錄包含了常用Linux與單片機開發板的工程樣例。所有工程均採用shell腳本作為調試方法，詳細內容可參考每個工程裡面的README.md。

安裝

參考/interface目錄下與平台無關的IIC、SPI總線模板，完成指定平台的IIC、SPI總線驅動。

將/src目錄，/interface目錄和/example目錄加入工程。

使用

example basic

uint8_t res;
uint8_t i;
float temperature_c;
float pressure_pa;

res = bmp388_basic_init(BMP388_INTERFACE_IIC, BMP388_ADDRESS_ADO_LOW);
if (res)
{
    return 1;
}

...

for (i = 0; i < 3; i++)
{
    bmp388_interface_delay_ms(1000);
    res = bmp388_basic_read((float *)&temperature_c, (float *)&pressure_pa);
    if (res)
    {
        bmp388_basic_deinit();

        return 1;
    }
    bmp388_interface_debug_print("bmp388: temperature is %0.2fC.\n", temperature_c);
    bmp388_interface_debug_print("bmp388: pressure is %0.2fPa.\n", pressure_pa);

    ...
        
}

...

bmp388_basic_deinit();

return 0;

example shot

uint8_t res;
uint8_t i;
float temperature_c;
float pressure_pa;

res = bmp388_shot_init(BMP388_INTERFACE_IIC, BMP388_ADDRESS_ADO_LOW);
if (res)
{
    return 1;
}

...

for (i = 0; i < 3; i++)
{
    bmp388_interface_delay_ms(1000);
    res = bmp388_shot_read((float *)&temperature_c, (float *)&pressure_pa);
    if (res)
    {
        bmp388_shot_deinit();

        return 1;
    }
    bmp388_interface_debug_print("bmp388: temperature is %0.2fC.\n", temperature_c);
    bmp388_interface_debug_print("bmp388: pressure is %0.2fPa.\n", pressure_pa);
    
    ...
    
}

...

bmp388_shot_deinit();

return 0;

example interrupt

uint8_t res;
uint16_t i, timeout;
uint8_t gs_data_ready_flag;
float gs_temperature_c;
float gs_pressure_pa;

uint8_t bmp388_interrupt_receive_callback(uint8_t type)
{
    switch (type)
    {
        case BMP388_INTERRUPT_STATUS_FIFO_WATERMARK :
        {
            break;
        }
        case BMP388_INTERRUPT_STATUS_FIFO_FULL :
        {
            break;
        }
        case BMP388_INTERRUPT_STATUS_DATA_READY :
        {
            /* read temperature pressure */
            if (bmp388_interrupt_read((float *)&gs_temperature_c, (float *)&gs_pressure_pa))
            {
                bmp388_interface_debug_print("bmp388: read temperature and pressure failed.\n");
           
                return 1;
            }
            gs_data_ready_flag  = 1;
            
            break;
        }
        default :
        {
            break;
        }
    }
    
    return 0;
}

res = gpio_interrupt_init();
if (res)
{
    return 1;
}
res = bmp388_interrupt_init(BMP388_INTERFACE_IIC, BMP388_ADDRESS_ADO_LOW, bmp388_interrupt_receive_callback);
if (res)
{
    gpio_interrupt_deinit();

    return 1;
}

...

gs_data_ready_flag = 0;
timeout = 5000;
for (i = 0; i < 3; i++)
{
    while (timeout)
    {
        bmp388_interface_delay_ms(100);
        timeout--;
        if (gs_data_ready_flag)
        {
            break;
        }
        if (timeout == 0)
        {
            gpio_interrupt_deinit();
            bmp388_interrupt_deinit();

            return 1;
        }
    }
    gs_data_ready_flag = 0;
    timeout = 5000;
    bmp388_interface_debug_print("bmp388: temperature is %0.2fC.\n", gs_temperature_c);
    bmp388_interface_debug_print("bmp388: pressure is %0.2fPa.\n", gs_pressure_pa);
    
    ...
    
}

...

gpio_interrupt_deinit();
bmp388_interrupt_deinit();

return 0;

example fifo

uint8_t gs_fifo_full_flag;
uint8_t gs_fifo_watermark_flag;
uint16_t i, timeout;
uint8_t gs_buf[512];
bmp388_frame_t gs_frame[256];

uint8_t bmp388_fifo_receive_callback(uint8_t type)
{
    switch (type)
    {
        case BMP388_INTERRUPT_STATUS_FIFO_WATERMARK :
        {
            uint8_t res;
            uint16_t len;
            uint16_t i, frame_len;
            
            len = 512;
            frame_len = 256;
            res = bmp388_fifo_read(gs_buf, len, (bmp388_frame_t *)gs_frame, (uint16_t *)&frame_len);
            if (res)
            {
                bmp388_interface_debug_print("bmp388: fifo read failed.\n");
                
                return 1;
            }
            for (i=0; i<frame_len; i++)
            {
                if (gs_frame[i].type == BMP388_FRAME_TYPE_TEMPERATURE)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: temperature is %0.2fC.\n", gs_frame[i].data);
                }
                else if (gs_frame[i].type == BMP388_FRAME_TYPE_PRESSURE)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: pressure is %0.2fPa.\n", gs_frame[i].data);
                }
                else if (gs_frame[i].type == BMP388_FRAME_TYPE_SENSORTIME)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: sensortime is %d.\n", gs_frame[i].raw);
                }
                else
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: unknow type.\n");
                }
            }
            gs_fifo_watermark_flag = 1;
            
            break;
        }
        case BMP388_INTERRUPT_STATUS_FIFO_FULL :
        {
            volatile uint8_t res;
            volatile uint16_t len;
            volatile uint16_t i, frame_len;
            
            len = 512;
            frame_len = 256;
            res = bmp388_fifo_read(gs_buf, len, (bmp388_frame_t *)gs_frame, (uint16_t *)&frame_len);
            if (res)
            {
                bmp388_interface_debug_print("bmp388: fifo read failed.\n");
                
                return 1;
            }
            for (i=0; i<frame_len; i++)
            {
                if (gs_frame[i].type == BMP388_FRAME_TYPE_TEMPERATURE)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: temperature is %0.2fC.\n", gs_frame[i].data);
                }
                else if (gs_frame[i].type == BMP388_FRAME_TYPE_PRESSURE)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: pressure is %0.2fPa.\n", gs_frame[i].data);
                }
                else if (gs_frame[i].type == BMP388_FRAME_TYPE_SENSORTIME)
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: sensortime is %d.\n", gs_frame[i].raw);
                }
                else
                {
                    bmp388_interface_debug_print("bmp388: fifo %d/%d.\n", i+1, frame_len);
                    bmp388_interface_debug_print("bmp388: unknow type.\n");
                }
            }
            gs_fifo_full_flag = 1;
            
            break;
        }
        case BMP388_INTERRUPT_STATUS_DATA_READY :
        {
            break;
        }
        default :
        {
            break;
        }
    }
    
    return 0;
}

res = gpio_interrupt_init();
if (res)
{
    return 1;
}
res = bmp388_fifo_init(BMP388_INTERFACE_IIC, BMP388_ADDRESS_ADO_LOW, bmp388_fifo_receive_callback);
if (res)
{
    gpio_interrupt_deinit();

    return 1;
}

...

gs_fifo_watermark_flag = 0;
gs_fifo_full_flag = 0;
timeout = 5000;
for (i = 0; i < 3; i++)
{
    while (timeout)
    {
        bmp388_interface_delay_ms(100);
        timeout--;
        if (gs_fifo_watermark_flag || gs_fifo_full_flag)
        {
            break;
        }
        if (timeout == 0)
        {
            gpio_interrupt_deinit();
            bmp388_fifo_deinit();

            return 1;
        }
    }
    gs_fifo_watermark_flag = 0;
    gs_fifo_full_flag = 0;
    timeout = 5000;
    
    ...
    
}
gpio_interrupt_deinit();
bmp388_fifo_deinit();

...

return 0;

文檔

在線文檔: https://www.libdriver.com/docs/bmp388/index.html

離線文檔: /doc/html/index.html

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請聯繫[email protected]

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