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The MAX30102 is an integrated pulse oximetry and heart-rate monitor module. It includes internal LEDs, photodetectors, optical elements, and low-noise electronics with ambient light rejection. The MAX30102 provides a complete system solution to ease the design-in process for mobile and wearable devices.The MAX30102 operates on a single 1.8V power supply and a separate 3.3V power supply for the internal LEDs. Communication is through a standard I2C-compatible interface. The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.It can be used in wearable devices, fitness assistant devices, smartphones, tablets and so on.
LibDriver MAX30102 is the full function driver of MAX30102 launched by LibDriver. It provides fifo reading, id reading and other functions. LibDriver is MISRA compliant.
/src includes LibDriver MAX30102 source files.
/interface includes LibDriver MAX30102 IIC platform independent template.
/test includes LibDriver MAX30102 driver test code and this code can test the chip necessary function simply.
/example includes LibDriver MAX30102 sample code.
/doc includes LibDriver MAX30102 offline document.
/datasheet includes MAX30102 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.
/misra includes the LibDriver MISRA code scanning results.
Reference /interface IIC platform independent template and finish your platform IIC driver.
Add the /src directory, the interface driver for your platform, and your own drivers to your project, if you want to use the default example drivers, add the /example directory to your project.
You can refer to the examples in the /example directory to complete your own driver. If you want to use the default programming examples, here's how to use them.
#include "driver_max30102_fifo.h"
static uint8_t gs_flag;
static uint32_t gs_raw_red[32];
static uint32_t gs_raw_ir[32];
uint8_t res;
uint32_t timeout;
uint32_t times;
uint8_t (*g_gpio_irq)(void) = NULL;
...
void max30102_receive_callback(uint8_t type)
{
switch (type)
{
case MAX30102_INTERRUPT_STATUS_FIFO_FULL :
{
uint8_t res;
uint8_t len;
/* read data */
len = 32;
res = max30102_fifo_read((uint32_t *)gs_raw_red, (uint32_t *)gs_raw_ir, (uint8_t *)&len);
if (res != 0)
{
max30102_interface_debug_print("max30102: read failed.\n");
}
max30102_interface_debug_print("max30102: irq fifo full with %d.\n", len);
gs_flag = 1;
break;
}
case MAX30102_INTERRUPT_STATUS_PPG_RDY :
{
max30102_interface_debug_print("max30102: irq ppg rdy.\n");
break;
}
case MAX30102_INTERRUPT_STATUS_ALC_OVF :
{
max30102_interface_debug_print("max30102: irq alc ovf.\n");
break;
}
case MAX30102_INTERRUPT_STATUS_PWR_RDY :
{
max30102_interface_debug_print("max30102: irq pwr rdy.\n");
break;
}
case MAX30102_INTERRUPT_STATUS_DIE_TEMP_RDY :
{
max30102_interface_debug_print("max30102: irq die temp rdy.\n");
break;
}
default :
{
max30102_interface_debug_print("max30102: unknown code.\n");
break;
}
}
}
...
/* set gpio */
g_gpio_irq = max30102_fifo_irq_handler;
res = gpio_interrupt_init();
if (res != 0)
{
g_gpio_irq = NULL;
return 1;
}
/* fifo init */
res = max30102_fifo_init(max30102_receive_callback);
if (res != 0)
{
(void)gpio_interrupt_deinit();
g_gpio_irq = NULL;
return 1;
}
/* read data */
times = 3;
gs_flag = 0;
timeout = 5000;
while (timeout != 0)
{
if (gs_flag != 0)
{
/* clear config */
gs_flag = 0;
timeout = 5000;
times--;
if (times == 0)
{
break;
}
}
max30102_interface_delay_ms(1);
timeout--;
}
/* check timeout */
if (timeout == 0)
{
max30102_interface_debug_print("max30102: read timeout failed.\n");
(void)max30102_fifo_deinit();
(void)gpio_interrupt_deinit();
g_gpio_irq = NULL;
return 1;
}
(void)max30102_fifo_deinit();
(void)gpio_interrupt_deinit();
g_gpio_irq = NULL;
return 0;Online documents: https://www.libdriver.com/docs/max30102/index.html.
Offline documents: /doc/html/index.html.
Please refer to CONTRIBUTING.md.
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