How to deploy demonstration:
----------------------------
Materials:
* Nucleo extension board with mems, here IKS01A2
* connection between extension board and stm32mp15 board.
Pre-requisite:
--------------
1. Kernel:
You need to configure the kernel to support the Nucleo extension
board with the devitree configuration and the kernel configuration.
1.1 DeviceTree:
* Enable the sensor on I2C
For Discovery board (stm32mp157c-dk2), the sensors are linked on ic25.
Add the following line on your devicetree associateds to the board
&i2c5 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c5_pins_a>;
pinctrl-1 = <&i2c5_pins_sleep_a>;
i2c-scl-rising-time-ns = <124>;
i2c-scl-falling-time-ns = <3>;
/delete-property/dmas;
/delete-property/dma-names;
status = "okay";
hts221@5f {
compatible = "st,hts221";
reg = <0x5f>;
};
lsm6dsl@6b {
compatible = "st,lsm6dsl";
reg = <0x6b>;
};
};
NOTE: the i2c depend of the pin-muxing of the board and could be different of
i2c5.
1.2 Kernel configuration:
Add the following config on your kernel configuraturation
(best way are via a new fragment)
CONFIG_IIO_BUFFER=y
CONFIG_IIO_KFIFO_BUF=y
CONFIG_IIO_TRIGGERED_BUFFER=y
CONFIG_HTS221=y
CONFIG_IIO_ST_PRESS=y
CONFIG_IIO_ST_LSM6DSX=y
CONFIG_IIO_ST_LSM6DSX_I2C=y
2. Software
You need to have some framework available on the board for executing the
python script:
List of packages already present on st-example-image-weston:
weston
gtk+3
python3 and several python3 addons
Execution of script on board:
-----------------------------
Files:
/usr/local/demo/
/usr/local/demo/sensors_temperature.py
Put the files on board and launch the python script:
BOARD > /usr/local/demo/sensors_temperature.py
To quit the application, just click on ST logo.
