feat(esp32s3-eye): buttons

boards/xtensa/esp32s3/esp32s3-eye/src/Make.defs

@@ -29,6 +29,10 @@ CSRCS += esp32s3_reset.c
 endif
 endif
 
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += esp32s3_buttons.c
+endif
+
 ifeq ($(CONFIG_DEV_GPIO),y)
 CSRCS += esp32s3_gpio.c
 endif

boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_buttons.c

@@ -0,0 +1,164 @@
+/****************************************************************************
+ * boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_buttons.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 <assert.h>
+#include <debug.h>
+#include <stdbool.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+#include <nuttx/irq.h>
+
+#include "esp32s3_gpio.h"
+#include "hardware/esp32s3_gpio_sigmap.h"
+
+#include "esp32s3-eye.h"
+
+/****************************************************************************
+ * 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.
+ *
+ ****************************************************************************/
+
+uint32_t board_button_initialize(void)
+{
+  esp32s3_configgpio(BUTTON_BOOT, INPUT_FUNCTION_2 | PULLUP);
+  return 1;
+}
+
+/****************************************************************************
+ * Name: board_buttons
+ *
+ * Description:
+ *   After board_button_initialize() has been called, board_buttons() may be
+ *   called to collect the state of all buttons.  board_buttons() returns an
+ *   8-bit bit set with each bit associated with a button.  See the
+ *   BUTTON_*_BIT  definitions in board.h for the meaning of each bit.
+ *
+ ****************************************************************************/
+
+uint32_t board_buttons(void)
+{
+  uint8_t ret = 0;
+  int i = 0;
+  int n = 0;
+
+  bool b0 = esp32s3_gpioread(BUTTON_BOOT);
+
+  for (i = 0; i < 10; i++)
+    {
+      up_mdelay(1);
+
+      bool b1 = esp32s3_gpioread(BUTTON_BOOT);
+
+      if (b0 == b1)
+        {
+          n++;
+        }
+      else
+        {
+          n = 0;
+        }
+
+      if (3 == n)
+        {
+          break;
+        }
+
+      b0 = b1;
+    }
+
+  iinfo("b=%d n=%d\n", b0, n);
+
+  /* Low value means that the button is pressed */
+
+  if (!b0)
+    {
+      ret = 0x1;
+    }
+
+  return ret;
+}
+
+/****************************************************************************
+ * Name: board_button_irq
+ *
+ * Description:
+ *   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, void *arg)
+{
+  int ret;
+  DEBUGASSERT(id == 0);
+
+  int irq = ESP32S3_PIN2IRQ(BUTTON_BOOT);
+
+  if (irqhandler != NULL)
+    {
+      /* Make sure the interrupt is disabled */
+
+      esp32s3_gpioirqdisable(irq);
+
+      ret = irq_attach(irq, irqhandler, arg);
+      if (ret < 0)
+        {
+          syslog(LOG_ERR, "ERROR: irq_attach() failed: %d\n", ret);
+          return ret;
+        }
+
+      gpioinfo("Attach %p\n", irqhandler);
+
+      gpioinfo("Enabling the interrupt\n");
+
+      /* Configure the interrupt for rising and falling edges */
+
+      esp32s3_gpioirqenable(irq, GPIO_INTR_ANYEDGE);
+    }
+  else
+    {
+      gpioinfo("Disable the interrupt\n");
+      esp32s3_gpioirqdisable(irq);
+    }
+
+  return OK;
+}
+#endif