configs/nucleo-l073rz/src/stm32_buttons.c: By default button support is enabled. This causes errors because button support was not implemented for this configuration. Solution: Port button logic from nucleo-f072 which appears to be the same.

configs/b-l072z-lrwan1/sx127x/defconfig

@@ -1,5 +1,3 @@
-# do not push this to upstream before cleaning !!!
-
 # CONFIG_LIBC_LONG_LONG is not set
 # CONFIG_NSH_ARGCAT is not set
 CONFIG_ARCH="arm"

configs/nucleo-l073rz/src/stm32_autoleds.c

@@ -44,11 +44,12 @@
 #include <debug.h>
 
 #include <nuttx/board.h>
-#include <arch/board/board.h>
 
 #include "stm32_gpio.h"
 #include "nucleo-l073rz.h"
 
+#include <arch/board/board.h>
+
 #ifdef CONFIG_ARCH_LEDS
 
 /****************************************************************************

configs/nucleo-l073rz/src/stm32_buttons.c

@@ -0,0 +1,129 @@
+/****************************************************************************
+ * configs/nucleo-l073rz/src/stm32_buttons.c
+ *
+ *   Copyright (C) 2019 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+
+#include "stm32_gpio.h"
+#include "nucleo-l073rz.h"
+
+#include <arch/board/board.h>
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_button_initialize
+ *
+ * Description:
+ *   board_button_initialize() must be called to initialize button resources.
+ *   After that, board_buttons() may be called to collect the current state
+ *   of all buttons or board_button_irq() may be called to register button
+ *   interrupt handlers.
+ *
+ ****************************************************************************/
+
+void board_button_initialize(void)
+{
+  /* Configure the single button as an input.  NOTE that EXTI interrupts are
+   * also configured for the pin.
+   */
+
+  stm32_configgpio(GPIO_BTN_USER);
+}
+
+/****************************************************************************
+ * Name: board_buttons
+ ****************************************************************************/
+
+uint32_t board_buttons(void)
+{
+  /* Check that state of each USER button. A LOW value means that the key is
+   * pressed.
+   */
+
+  bool released = stm32_gpioread(GPIO_BTN_USER);
+  return !released;
+}
+
+/************************************************************************************
+ * Button support.
+ *
+ * Description:
+ *   board_button_initialize() must be called to initialize button resources.  After
+ *   that, board_buttons() may be called to collect the current state of all
+ *   buttons or board_button_irq() may be called to register button interrupt
+ *   handlers.
+ *
+ *   After board_button_initialize() has been called, board_buttons() may be called to
+ *   collect the state of all buttons.  board_buttons() returns an 32-bit bit set
+ *   with each bit associated with a button.  See the BUTTON_*_BIT
+ *   definitions in board.h for the meaning of each bit.
+ *
+ *   board_button_irq() may be called to register an interrupt handler that will
+ *   be called when a button is depressed or released.  The ID value is a
+ *   button enumeration value that uniquely identifies a button resource. See the
+ *   BUTTON_* definitions in board.h for the meaning of enumeration
+ *   value.
+ *
+ ************************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+int board_button_irq(int id, xcpt_t irqhandler, FAR void *arg)
+{
+  int ret = -EINVAL;
+
+  if (id == BUTTON_USER)
+    {
+      ret = stm32_gpiosetevent(GPIO_BTN_USER, true, true, true, irqhandler, arg);
+    }
+
+  return ret;
+}
+#endif
+#endif /* CONFIG_ARCH_BUTTONS */