I have this MEMS sensor on a custom board to detect landscape or portrait mode of my device.
The problem is that it doesn't generate an interrupt.
- 4D mode should be sufficient.
- Range 2g
- Tested different ODR settings.
My current code is now:
void tilt_init(void)
{
dev_ctx.write_reg = platform_write;
dev_ctx.read_reg = platform_read;
dev_ctx.handle = &SENSOR_BUS;
lis2de12_boot_set(&dev_ctx, PROPERTY_ENABLE);
lis2de12_pin_sdo_sa0_mode_set(&dev_ctx, LIS2DE12_PULL_UP_DISCONNECT);
lis2de12_high_pass_mode_set(&dev_ctx, LIS2DE12_NORMAL);
lis2de12_device_id_get(&dev_ctx, &whoamI);
/*Set Output Data Rate */
lis2de12_data_rate_set(&dev_ctx, LIS2DE12_ODR_400Hz );
/*Set full scale */
lis2de12_full_scale_set(&dev_ctx, LIS2DE12_2g);
/* Enable Block Data Update */
lis2de12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
/*Configure power mode */
//lis2de12_power_mode_set(&dev_ctx, IIS2DLPC_CONT_LOW_PWR_LOW_NOISE_12bit);
/* Apply high-pass digital filter on Wake-Up function
* Duration time is set to zero so Wake-Up interrupt signal
* is generated for each X,Y,Z filtered data exceeding the
* configured threshold
*/
lis2de12_int1_gen_duration_set(&dev_ctx, 1);
/*LPF2 on 6D function selection. */
//lis2de12_6d_feed_data_set(&dev_ctx, IIS2DLPC_LPF2_FEED);
/*Enable interrupt generation 6D & double tab on INT1 pin. */
//lis2de12_pin_int1_route_get(&dev_ctx, &int_route.ctrl4_int1_pad_ctrl);
lis2de12_int1_cfg_t lis2de12_int1_cfg = {0};
lis2de12_int1_cfg._6d = PROPERTY_ENABLE;
lis2de12_int1_cfg.xhie = PROPERTY_ENABLE;
lis2de12_int1_cfg.xlie = PROPERTY_ENABLE;
lis2de12_int1_cfg.yhie = PROPERTY_ENABLE;
lis2de12_int1_cfg.ylie = PROPERTY_ENABLE;
lis2de12_int1_gen_conf_set(&dev_ctx, &lis2de12_int1_cfg);
lis2de12_int1_pin_detect_4d_set(&dev_ctx, PROPERTY_ENABLE);
lis2de12_ctrl_reg3_t lis2de12_ctrl_reg3 = {0};
lis2de12_ctrl_reg3.i1_ia1 = PROPERTY_ENABLE;
lis2de12_pin_int1_config_set(&dev_ctx, &lis2de12_ctrl_reg3);
//Set temp measuring
lis2de12_temperature_meas_set(&dev_ctx, LIS2DE12_TEMP_ENABLE);
/*
* Latched interrupt
*/
//iis2dlpc_int_notification_set(&dev_ctx, IIS2DLPC_INT_LATCHED);
}
Am I missing something crucial?
UPDATE:
Auch!, apparently the tilt interrupt pin number matched this wrong OR operation of other interrupt pins
Of all the pins you can choose as a designer!
Still wondering how Tilt pin 0x0020 validates as true for if(GPIO == 0x4000 || 0x2000)
Although this fixed the problem of handling interrupts correctly, it is still not generated bij the MEMS.
I only tested the interrupt pin manually
How can I setup the portrait/landscape threshold angle and rigger an interrupt?
