89 lines
2.1 KiB
ReStructuredText
89 lines
2.1 KiB
ReStructuredText
.. _disco-sample:
|
|
|
|
Disco demo
|
|
##########
|
|
|
|
Overview
|
|
********
|
|
|
|
A simple 'disco' demo. The demo assumes that 2 LEDs are connected to
|
|
GPIO outputs of the MCU/board.
|
|
|
|
|
|
Wiring
|
|
******
|
|
|
|
The code may need some work before running on another board: set PORT,
|
|
LED1 and LED2 according to the board's GPIO configuration.
|
|
|
|
Nucleo-64 F103RB/F401RE boards
|
|
==============================
|
|
|
|
Connect two LEDs to PB5 and PB8 pins. PB5 is mapped to the
|
|
Arduino's D4 pin and PB8 to Arduino's D15. For more details about
|
|
these boards see:
|
|
|
|
- https://developer.mbed.org/platforms/ST-Nucleo-F103RB/
|
|
- https://developer.mbed.org/platforms/ST-Nucleo-F401RE/
|
|
|
|
Arduino 101 (x86)
|
|
=================
|
|
|
|
Connect two LEDs to D4 (IO4) and D7 (IO7) pins. The schematics for the Arduino
|
|
101 board is available at:
|
|
|
|
https://www.arduino.cc/en/uploads/Main/Arduino101-REV4Schematic.pdf
|
|
|
|
For Arduino 101's pinmux mapping in Zephyr, see: :file:`boards/x86/arduino_101/pinmux.c`
|
|
|
|
Modify the src/main.c file and set:
|
|
|
|
.. code-block:: c
|
|
|
|
#define PORT CONFIG_GPIO_QMSI_0_NAME
|
|
/* GPIO_19 is Arduino's D4 */
|
|
#define LED1 19
|
|
/* GPIO_20 is Arduino's D7 */
|
|
#define LED2 20
|
|
|
|
Building and Running
|
|
*********************
|
|
|
|
After startup, the program looks up a predefined GPIO device defined by 'PORT',
|
|
and configures pins 'LED1' and 'LED2' in output mode. During each iteration of
|
|
the main loop, the state of GPIO lines will be changed so that one of the lines
|
|
is in high state, while the other is in low, thus switching the LEDs on and off
|
|
in an alternating pattern.
|
|
|
|
This project does not output to the serial console, but instead causes two LEDs
|
|
connected to the GPIO device to blink in an alternating pattern.
|
|
|
|
The sample can be found here: :file:`samples/basic/disco`.
|
|
|
|
Nucleo F103RB
|
|
=============
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/basic/disco
|
|
:board: nucleo_f103rb
|
|
:goals: build
|
|
:compact:
|
|
|
|
Nucleo F401RE
|
|
=============
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/basic/disco
|
|
:board: nucleo_f401re
|
|
:goals: build
|
|
:compact:
|
|
|
|
Arduino 101
|
|
============
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/basic/disco
|
|
:board: arduino_101
|
|
:goals: build
|
|
:compact:
|