I2C BNO055 Example

(See the README.md file in the upper level 'examples' directory for more information about examples.)

How to use example

Hardware Required

To run this example, you should have one ESP32 dev board (e.g. ESP32-WROVER Kit) or ESP32 core board (e.g. ESP32-DevKitC). Optionally, you can also connect an external sensor, here we choose the BNO055.

Pin Assignment:

Note: The following pin assignments are used by default, yout can change these in the menuconfig .

	SDA	SCL
ESP32 I2C Master	GPIO18	GPIO19
BNO055 Sensor	SDA	SCL

master:
- GPIO18 is assigned as the data signal of I2C master port
- GPIO19 is assigned as the clock signal of I2C master port
Connection:
- connect SDA/SCL of bno055 sensor with GPIO18/GPIO19

**Note: ** There’s no need to add an external pull-up resistors for SDA/SCL pin, because the driver will enable the internal pull-up resistors.

Configure the project

Open the project configuration menu (idf.py menuconfig). Then go into Example Configuration menu.

In the I2C Master submenu, you can set the pin number of SDA/SCL according to your board. Also you can modify the I2C port number and freauency of the master.

Build and Flash

Enter idf.py -p PORT flash monitor to build, flash and monitor the project.

(To exit the serial monitor, type Ctrl-].)

See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.

Example Output

I (6495) i2c-example: TASK[1] test cnt: 1
*******************
TASK[1]  MASTER READ SENSOR( BH1750 )
*******************
data_h: 01
data_l: d0
sensor val: 386.67 [Lux]
I (6695) i2c-example: TASK[0] test cnt: 2
*******************
TASK[0]  MASTER READ SENSOR( BH1750 )
*******************
data_h: 01
data_l: d0
sensor val: 386.67 [Lux]
*******************
TASK[0]  MASTER READ FROM SLAVE
*******************
====TASK[0] Slave buffer data ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f 

====TASK[0] Master read ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f 

*******************
TASK[1]  MASTER READ FROM SLAVE
*******************
====TASK[1] Slave buffer data ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f 

====TASK[1] Master read ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f 

*******************
TASK[0]  MASTER WRITE TO SLAVE
*******************
----TASK[0] Master write ----
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69 
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79 
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89 

----TASK[0] Slave read: [128] bytes ----
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69 
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79 
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89

bhaskarsdose / BNO055-IDF