Running BMA490L on Arduino

[kazkibergetic]

Hello,

How can I run BMA490L on Arduino?

Thank you.

[Yanchao]

Hi,

We provide BMA490L-Sensor-API at github. You could import this api in arduino code.

Best regards.

[Minhwan]

Hello, 

Here is the example for Arduino Due. 

Please let me know if you have any questions. 

Thanks, 

[kazkibergetic]

Awesome, thank you. Do you use interrupts in your code? 

[Minhwan]

Hello kazkibergetic, 

No, however you can use BMA4 interrupt for BMA490L as below. 

Thanks 🙂 

/**\name OUTPUT TYPE ENABLE POSITION AND MASK*/
#define BMA4_INT_EDGE_CTRL_MASK UINT8_C(0x01)
#define BMA4_INT_EDGE_CTRL_POS UINT8_C(0x00)
#define BMA4_INT_LEVEL_MASK UINT8_C(0x02)
#define BMA4_INT_LEVEL_POS UINT8_C(0x01)
#define BMA4_INT_OPEN_DRAIN_MASK UINT8_C(0x04)
#define BMA4_INT_OPEN_DRAIN_POS UINT8_C(0x02)
#define BMA4_INT_OUTPUT_EN_MASK UINT8_C(0x08)
#define BMA4_INT_OUTPUT_EN_POS UINT8_C(0x03)
#define BMA4_INT_INPUT_EN_MASK UINT8_C(0x10)
#define BMA4_INT_INPUT_EN_POS UINT8_C(0x04)

/**\name INTERRUPT ENABLE REGISTERS*/
#define BMA4_INT1_IO_CTRL_ADDR UINT8_C(0X53)
#define BMA4_INT2_IO_CTRL_ADDR UINT8_C(0X54)

/**\name LATCH DURATION REGISTERS*/
#define BMA4_INTR_LATCH_ADDR UINT8_C(0X55)

/*!
* @brief Interrupt Pin Configuration structure
*/
struct bma4_int_pin_config {
/*! Trigger condition of interrupt pin */
uint8_t edge_ctrl;
/*! Level of interrupt pin */
uint8_t lvl;
/*! Behaviour of interrupt pin to open drain */
uint8_t od;
/*! Output enable for interrupt pin */
uint8_t output_en;
/*! Input enable for interrupt pin */
uint8_t input_en;
};

/*! @brief This function sets the electrical behaviour of interrupt pin1 or
pin2 in the sensor.
*/
uint16_t bma4_set_int_pin_config(const struct bma4_int_pin_config *int_pin_config, uint8_t int_line,
struct bma490l_dev *dev)
{
uint16_t rslt = 0;
uint8_t interrupt_address_array[2] = {BMA4_INT1_IO_CTRL_ADDR, BMA4_INT2_IO_CTRL_ADDR};
uint8_t data = 0;

/* Check the bma4 structure as NULL */
if (dev == NULL) {
rslt |= BMA490L_E_NULL_PTR;
} else {
if (int_line <= 1) {
data = ((uint8_t)((int_pin_config->edge_ctrl & BMA4_INT_EDGE_CTRL_MASK) |
((int_pin_config->lvl << 1) & BMA4_INT_LEVEL_MASK) |
((int_pin_config->od << 2) & BMA4_INT_OPEN_DRAIN_MASK) |
((int_pin_config->output_en << 3) & BMA4_INT_OUTPUT_EN_MASK) |
((int_pin_config->input_en << 4) & BMA4_INT_INPUT_EN_MASK)));

rslt |= bma490l_write_regs(interrupt_address_array[int_line], &data, 1, dev);
} else {
rslt |= BMA490L_E_INT_LINE_INVALID;
}
}

return rslt;
}

main()

{

int_pin_config.edge_ctrl = 0x01; // 0 = level, 1 = edge
int_pin_config.lvl = 0x01; // 0 = active low, 1 = active high
int_pin_config.od = 0x0; // 0 = push-pull, 1 = open drain
int_pin_config.output_en = 0x01; // 0 = output disabled, 1 = output enabled
int_pin_config.input_en = 0x0; // 0 = input disabled, 1 = input enabled. input used for fifo things
// INT1 active high, pushpull, output enabled
rslt = bma4_set_int_pin_config(&int_pin_config, 0, &bma490l_dev);

/* Make interrupt function */

}