Led and buttons examples

Description:
Test LED examples on freedom-k66f, nucleo-f401re and blackpill-f411ce boards.
Update linker file for bluepill-f103c6.

boards/arm/kinetis/freedom-k66f/src/freedom-k66f.h

@@ -44,6 +44,11 @@
 #define HAVE_SPI         1
 #define HAVE_USBDEV      1
 
+#undef HAVE_LEDS
+#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
+#  define HAVE_LEDS 1
+#endif
+
 #if defined(CONFIG_KINETIS_RTC)
 #define HAVE_RTC_DRIVER  1
 #endif

boards/arm/kinetis/freedom-k66f/src/k66_bringup.c

@@ -32,8 +32,21 @@
 #include <nuttx/board.h>
 #include <nuttx/fs/fs.h>
 
+#ifdef CONFIG_USERLED
+#  include <nuttx/leds/userled.h>
+#endif
+
+#ifdef CONFIG_EXAMPLES_LEDS_DEVPATH
+#  define LED_DRIVER_PATH CONFIG_EXAMPLES_LEDS_DEVPATH
+#else
+#  define LED_DRIVER_PATH "/dev/userleds"
+#endif
+
 #include <nuttx/spi/spi.h>
-#include <nuttx/input/buttons.h>
+
+#ifdef CONFIG_INPUT_BUTTONS
+#  include <nuttx/input/buttons.h>
+#endif
 
 #include "kinetis_spi.h"
 #include "freedom-k66f.h"
@@ -59,6 +72,17 @@ int k66_bringup(void)
 #endif
   int ret;
 
+#ifdef HAVE_LEDS
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize(LED_DRIVER_PATH);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+      return ret;
+    }
+#endif
+
 #ifdef HAVE_PROC
   /* Mount the proc filesystem */
 

boards/arm/stm32/nucleo-f4x1re/src/stm32_bringup.c

@@ -41,6 +41,10 @@
 #  include <nuttx/leds/userled.h>
 #endif
 
+#ifdef CONFIG_INPUT_BUTTONS
+#  include <nuttx/input/buttons.h>
+#endif
+
 #include "nucleo-f4x1re.h"
 
 #include <nuttx/board.h>
@@ -93,6 +97,16 @@ int stm32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_INPUT_BUTTONS
+  /* Register the BUTTON driver */
+
+  ret = btn_lower_initialize("/dev/buttons");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
   /* Configure SPI-based devices */
 
 #ifdef CONFIG_STM32_SPI1

boards/arm/stm32/stm32f103-minimum/scripts/ld.script

@@ -32,7 +32,7 @@
 
 MEMORY
 {
-  flash (rx) : ORIGIN = 0x08000000, LENGTH = 64K
+  flash (rx) : ORIGIN = 0x08000000, LENGTH = 128K
   sram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
 }
 

boards/arm/stm32/stm32f411-minimum/src/CMakeLists.txt

@@ -28,6 +28,10 @@ if(CONFIG_ARCH_LEDS)
   list(APPEND SRCS stm32_autoleds.c)
 endif()
 
+if(CONFIG_USERLED)
+  list(APPEND SRCS stm32_userleds.c)
+endif()
+
 if(CONFIG_SPI)
   list(APPEND SRCS stm32_spi.c)
 endif()

boards/arm/stm32/stm32f411-minimum/src/Make.defs

@@ -30,6 +30,10 @@ ifeq ($(CONFIG_ARCH_LEDS),y)
   CSRCS += stm32_autoleds.c
 endif
 
+ifeq ($(CONFIG_USERLED),y)
+  CSRCS += stm32_userleds.c
+endif
+
 ifeq ($(CONFIG_ADC_HX711),y)
   CSRCS += stm32_hx711.c
 endif

boards/arm/stm32/stm32f411-minimum/src/stm32_bringup.c

@@ -30,6 +30,10 @@
 
 #include "stm32.h"
 
+#ifdef CONFIG_USERLED
+#  include <nuttx/leds/userled.h>
+#endif
+
 #ifdef CONFIG_STM32_OTGFS
 #  include "stm32_usbhost.h"
 #endif
@@ -84,6 +88,16 @@ int stm32_bringup(void)
 {
   int ret = OK;
 
+#ifdef CONFIG_USERLED
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize("/dev/userleds");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
 #ifdef CONFIG_STM32F411MINIMUM_GPIO
   ret = stm32_gpio_initialize();
   if (ret != OK)

boards/arm/stm32/stm32f411-minimum/src/stm32_userleds.c

@@ -0,0 +1,100 @@
+/****************************************************************************
+ * boards/arm/stm32/stm32f411-minimum/src/stm32_userleds.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "stm32.h"
+#include "stm32f411-minimum.h"
+
+#ifndef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* This array maps an LED number to GPIO pin configuration */
+
+static const uint32_t g_ledcfg[BOARD_NLEDS] =
+{
+  GPIO_LED1,
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_userled_initialize
+ ****************************************************************************/
+
+uint32_t board_userled_initialize(void)
+{
+  int i;
+
+  /* Configure LED GPIOs for output */
+
+  for (i = 0; i < BOARD_NLEDS; i++)
+    {
+      stm32_configgpio(g_ledcfg[i]);
+    }
+
+  return BOARD_NLEDS;
+}
+
+/****************************************************************************
+ * Name: board_userled
+ ****************************************************************************/
+
+void board_userled(int led, bool ledon)
+{
+  if ((unsigned)led < BOARD_NLEDS)
+    {
+      stm32_gpiowrite(g_ledcfg[led], ledon);
+    }
+}
+
+/****************************************************************************
+ * Name: board_userled_all
+ ****************************************************************************/
+
+void board_userled_all(uint32_t ledset)
+{
+  int i;
+
+  /* Configure LED GPIOs for output */
+
+  for (i = 0; i < BOARD_NLEDS; i++)
+    {
+      stm32_gpiowrite(g_ledcfg[i], (ledset & (1 << i)) != 0);
+    }
+}
+
+#endif /* !CONFIG_ARCH_LEDS */