boards/xtensa/esp32: Add LED support for

boards/xtensa/esp32/heltec_wifi_lora32/include/board.h

@@ -48,6 +48,7 @@
 /* Define how many LEDs this board has (needed by userleds) */
 
 #define BOARD_NLEDS       1
+#define GPIO_LED1         25  /* White LED on Heltec WiFi LoRa 32 */
 
 /* GPIO pins used by the GPIO Subsystem */
 

boards/xtensa/esp32/heltec_wifi_lora32/src/Make.defs

@@ -30,3 +30,6 @@ DEPPATH += --dep-path board
 VPATH += :board
 CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
 
+ifeq ($(CONFIG_USERLED),y)
+CSRCS += esp32_userleds.c
+endif

boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_bringup.c

@@ -32,10 +32,14 @@
 #include <sys/stat.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
-#include <nuttx/debug.h>
 #include <errno.h>
+#include <nuttx/debug.h>
 #include <nuttx/board.h>
 
+#ifdef CONFIG_USERLED
+#  include <nuttx/leds/userled.h>
+#endif
+
 #include "esp32_start.h"
 
 #ifdef CONFIG_ESPRESSIF_HR_TIMER
@@ -107,6 +111,14 @@ int esp32_bringup(void)
    * capabilities.
    */
 
+#ifdef CONFIG_USERLED
+  ret = userled_lower_initialize("/dev/userleds");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
   UNUSED(ret);
   return OK;
 }

boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_userleds.c

@@ -0,0 +1,90 @@
+/****************************************************************************
+ * boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_userleds.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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 <stdbool.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "espressif/esp_gpio.h"
+#include "heltec_wifi_lora32.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static const uint32_t g_ledcfg[BOARD_NLEDS] =
+{
+  GPIO_LED1,
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_userled_initialize
+ ****************************************************************************/
+
+uint32_t board_userled_initialize(void)
+{
+  int i;
+
+  for (i = 0; i < BOARD_NLEDS; i++)
+    {
+      esp_configgpio(g_ledcfg[i], OUTPUT);
+    }
+
+  return BOARD_NLEDS;
+}
+
+/****************************************************************************
+ * Name: board_userled
+ ****************************************************************************/
+
+void board_userled(int led, bool ledon)
+{
+  if ((unsigned int)led < BOARD_NLEDS)
+    {
+      esp_gpiowrite(g_ledcfg[led], ledon);
+    }
+}
+
+/****************************************************************************
+ * Name: board_userled_all
+ ****************************************************************************/
+
+void board_userled_all(uint32_t ledset)
+{
+  int i;
+
+  for (i = 0; i < BOARD_NLEDS; i++)
+    {
+      esp_gpiowrite(g_ledcfg[i], (ledset & (1 << i)) != 0);
+    }
+}

boards/xtensa/esp32/heltec_wifi_lora32/src/heltec_wifi_lora32.h

@@ -46,13 +46,7 @@
 
 #define BUTTON_BOOT  0
 
-/* LED
- *
- * This is an externally connected LED used for testing.
- */
-
-#define GPIO_LED1             2
 
 /* PCNT Quadrature Encoder IDs */
 
 #define PCNT_QE0_ID           0