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