LSM6DSL wrist flip screen detection code

littleshrimp

LSM6DSL wrist flip screen detection code [Copy link]

 

 

LSM6DSL wrist flip screen detection code, tested using NUCLEO-L4R5ZI board

For configuration method, please refer to this post

https://bbs. eeworld.com.cn/forum.php?mod=viewthread&tid=541212&highlight=lsm6dsm

and 2.2

of the data sheet

The sensor driver uses STMems_Standard_C_drivers

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There is an error in the official code that makes it impossible to set the detection axis other than the X axis

The reason is that the following function only reads LSM6DSL_A_WRIST_TILT_MASK but does not write it back, so you need to modify it yourself

int32_t lsm6dsl_tilt_src_set(lsm6dsl_ctx_t *ctx,lsm6dsl_a_wrist_tilt_mask_t *val)

Main configuration code

1. void wrist_tilt(void) { lsm6dsl_all_sources_t lsm6dsl_all_sources; /* * Initialize mems driver interface */ dev_ctx.write_reg = platform_write; dev_ctx.read_reg = platform_read; dev_ctx.handle = &hi2c1; /* * Check device ID */ whoamI = 0; lsm6dsl_device_id_get(&dev_ctx, &whoamI); if ( whoamI != LSM6DSL_ID ) while(1); /*manage here device not found */ /* * Restore default configuration */ lsm6dsl_reset_set(&dev_ctx, PROPERTY_ENABLE); do { lsm6dsl_reset_get(&dev_ctx, &rst); } while (rst); /* * Enable Block Data Update */ lsm6dsl_block_data_update_set(&dev_ctx, PROPERTY_ENABLE); //1) Turn on the accelerometer, lsm6dsl_xl_data_rate_set(&dev_ctx, LSM6DSL_XL_ODR_26Hz); /* * Set full scale */ lsm6dsl_xl_full_scale_set(&dev_ctx, LSM6DSL_2g); //2) AWT is enabled, uint8_t wrist = PROPERTY_ENABLE; lsm6dsl_wrist_tilt_sens_set(&dev_ctx, wrist); ///3) Configure the AWT interrupt pin, lsm6dsl_int2_route_t lsm6dsl_int2_route; lsm6dsl_int2_route.int2_wrist_tilt = PROPERTY_ENABLE; lsm6dsl_pin_int2_route_set(&dev_ctx,lsm6dsl_int2_route); ///4) Configure detection axis, lsm6dsl_a_wrist_tilt_mask_t lsm6dsl_a_wrist_tilt_mask; lsm6dsl_a_wrist_tilt_mask.wrist_tilt_mask_zneg = PROPERTY_ENABLE; lsm6dsl_a_wrist_tilt_mask.wrist_tilt_mask_zpos = PROPERTY_ENABLE; lsm6dsl_tilt_src_set(&dev_ctx,&lsm6dsl_a_wrist_tilt_mask); ///5) Configure threshold, uint8_t threshold = 0x20; //1 LSB = 15.625 mg. Default value: 20h (500 mg). lsm6dsl_tilt_th reshold_set(&dev_ctx,&threshold); // /6) Configure duration uint8_t latency = 0x0f;//1 LSB = 40 ms. Default value: 0Fh (600 ms). lsm6dsl_tilt_latency_set(&dev_ctx,&latency); while(1) { if(int2_flag == 1) { int2_flag = 0; lsm6dsl_all_sources_get(&dev_ctx,&lsm6dsl_all_sources); if(lsm6dsl_all_sources.reg.wrist_tilt_ia.wrist_tilt_ia_zneg == 1 || lsm6dsl_all_sources.reg.wrist_tilt_ia.wrist_tilt_ia_zpos == 1) { snprintf(data_out, MAX_BUF_SIZE, "wrist tilt ia.\r\n") ; tx_com((uint8_t*)data_out, strlen(data_out)); } } } }

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381503442

How is the algorithm for turning on the screen by raising your hand and turning your wrist to turn on the screen implemented? Does anyone know?

littleshrimp

381503442 posted on 2018-8-15 15:17 How is the algorithm for turning on the screen by raising your hand and turning your wrist to turn on the screen implemented? Does anyone know?

This is implemented inside the sensor

ialvins

Just need it~ Thank you OP

ialvins

littleshrimp posted on 2018-8-15 16:06 This is implemented inside the sensor

I followed your code to set it up, but the Sensor cannot be interrupted. Does this mean that the detection axis should be set according to the direction of the Layout?

littleshrimp

ialvins posted on 2018-8-27 09:01 I followed your code to set it up, but it doesn't cause the Sensor to interrupt. Does this mean that the detection axis should be set according to the direction of the Layout?

Are there interruptions in other directions?

ialvins

littleshrimp posted on 2018-8-27 09:25 Is there any interruption in other directions?

I tried to open all three axes, and there was no interruption no matter how I swung it.... Currently I am connecting it to the recorder and I dare not swing it too hard. I would like to ask if the forum owner has any testing methods? Or test videos? Thank you

littleshrimp

It should be rotating along an axis that is not perpendicular to the ground, not swinging.

ialvins

Ok thank you, I'll give it a try!

zfw152666

Great code, thanks for sharing

忽如一夜

Thanks for sharing

ruson525

Thanks for sharing

ruson525

Thanks for sharing

houlai

Thanks, learning

李百仪

Download and try

wweiliang

I want to study it too!!!

sinosound

Learned

英雄末路

Has anyone ever encountered a situation where, when setting up AWT, only the enable state can be written, and the other states are useless?

The set MASK bug has been fixed, but I can still only read. I have tried writing src, latency, and threshold, but there are no errors when writing. However, when reading, I find that the values are still the same. In the end, only the X axis has a setting (from the MASK, only one direction of X is set, even if I try to set all 6 directions). The wrist_tilt_ia bit reported by func_src2 is set. It stands to reason that the direction can be read from WRIST_TILT_IA, but in fact, this register reads all 0.

It feels like the function can be enabled, but not configured, only the default X axis.

littleshrimp

Hero's End Published on 2020-4-15 09:10 Has anyone encountered that when setting AWT, only the enable state can be written, and the other states are useless? The BUG of set MASK has been solved, but it still...

Did you write the code yourself or use a routine?

英雄末路

littleshrimp posted on 2020-4-15 10:53 Did you write the code yourself or use a sample program?

The sample code is used for reg access, and the rest are written by myself