feat(esp32s3-eye): LCD

boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_board_lcd.c

@@ -0,0 +1,161 @@
+/****************************************************************************
+ * boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_board_lcd.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 <stdio.h>
+#include <stdbool.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+#include <nuttx/signal.h>
+#include <nuttx/spi/spi.h>
+#include <nuttx/lcd/lcd.h>
+#include <nuttx/lcd/st7789.h>
+
+#include <arch/board/board.h>
+
+#include "esp32s3_gpio.h"
+#include "esp32s3_spi.h"
+#include "hardware/esp32s3_gpio_sigmap.h"
+
+#include "esp32s3-eye.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct spi_dev_s *g_spidev;
+static struct lcd_dev_s *g_lcd;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name:  board_lcd_initialize
+ *
+ * Description:
+ *   Initialize the LCD video hardware.  The initial state of the LCD is
+ *   fully initialized, display memory cleared, and the LCD ready to use, but
+ *   with the power setting at 0 (full off).
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_lcd_initialize(void)
+{
+  /* Initialize non-SPI GPIOs */
+
+  esp32s3_configgpio(ESP32S3_EYE_DISPLAY_DC, OUTPUT);
+  esp32s3_configgpio(ESP32S3_EYE_DISPLAY_BCKL, OUTPUT);
+
+  /* Turn on LCD backlight */
+
+  /* esp32s3_gpiowrite(ESP32S3_EYE_DISPLAY_BCKL, true); */
+
+  /* OOPS! Looks like turning this on on V2.1
+   * boards will fry the backlight :O
+   */
+
+  /* Turn off LCD backlight instead */
+
+  esp32s3_gpiowrite(ESP32S3_EYE_DISPLAY_BCKL, false);
+
+  g_spidev = esp32s3_spibus_initialize(ESP32S3_EYE_DISPLAY_SPI);
+  if (!g_spidev)
+    {
+      lcderr("ERROR: Failed to initialize SPI port %d\n",
+             ESP32S3_EYE_DISPLAY_SPI);
+      return -ENODEV;
+    }
+
+  g_lcd = st7789_lcdinitialize(g_spidev);
+  if (!g_lcd)
+    {
+      lcderr("ERROR: st7789_lcdinitialize() failed\n");
+      return -ENODEV;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name:  board_lcd_getdev
+ *
+ * Description:
+ *   Return a a reference to the LCD object for the specified LCD.  This
+ *   allows support for multiple LCD devices.
+ *
+ * Input Parameters:
+ *   devno - LCD device nmber
+ *
+ * Returned Value:
+ *   LCD device pointer if success or NULL if failed.
+ *
+ ****************************************************************************/
+
+struct lcd_dev_s *board_lcd_getdev(int devno)
+{
+  if (!g_lcd)
+    {
+      lcderr("ERROR: Failed to bind SPI port %d to LCD %d\n",
+             ESP32S3_EYE_DISPLAY_SPI, devno);
+    }
+  else
+    {
+      lcdinfo("SPI port %d bound to LCD %d\n",
+              ESP32S3_EYE_DISPLAY_SPI,
+              devno);
+      return g_lcd;
+    }
+
+  return NULL;
+}
+
+/****************************************************************************
+ * Name:  board_lcd_uninitialize
+ *
+ * Description:
+ *   Uninitialize the LCD support
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void board_lcd_uninitialize(void)
+{
+  /* Turn the display off */
+
+  g_lcd->setpower(g_lcd, 0);
+}

boards/xtensa/esp32s3/esp32s3-eye/src/esp32s3_bringup.c

@@ -62,6 +62,11 @@
 #  include "esp32s3_spi.h"
 #endif
 
+#ifdef CONFIG_LCD_DEV
+#  include <nuttx/board.h>
+#  include <nuttx/lcd/lcd_dev.h>
+#endif
+
 #include "esp32s3-eye.h"
 
 /****************************************************************************
@@ -163,6 +168,20 @@ int esp32s3_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_ESP32S3_EYE_LCD
+  ret = board_lcd_initialize();
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: board_lcd_initialize() failed: %d\n", ret);
+    }
+
+  ret = lcddev_register(0);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: lcddev_register() failed: %d\n", ret);
+    }
+#endif
+
   /* If we got here then perhaps not all initialization was successful, but
    * at least enough succeeded to bring-up NSH with perhaps reduced
    * capabilities.