The BMP388 is a digital sensor with pressure and temperature measurement based on proven sensing principles.The sensor module is housed in an extremely compact 10-pin metal-lid LGA package with a footprint only 2.0 x 2.0 mm2 and max 0.8 mm package height. Its small dimensions and its low power consumption of 3.4 uA@1Hz allow the implementation in battery driven devices such as mobile phones ,GPS modules or watches.
LibDriver BMP388 is a full function driver of BMP388 launched by LibDriver.It provides continuous reading of pressure and temperature, single reading of pressure and temperature, interrupt reading, FIFO acquisition and other functions.
/src includes LibDriver BMP388 source files.
/interface includes LibDriver BMP388 IIC, SPI platform independent template。
/test includes LibDriver BMP388 driver test code and this code can test the chip necessary function simply。
/example includes LibDriver BMP388 sample code.
/doc includes LibDriver BMP388 offline document.
/datasheet includes BMP388 datasheet。
/project includes the common Linux and MCU development board sample code. All projects use the shell script to debug the driver and the detail instruction can be found in each project's README.md.
Reference /interface IIC, SPI platform independent template and finish your platform IIC, SPI driver.
Add /src, /interface and /example to your project.
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;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;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;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;Online documents: https://www.libdriver.com/docs/bmp388/index.html
Offline documents: /doc/html/index.html
Please sent an e-mail to [email protected]
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