esp32-devkitc: Add board support to ht16k33 14-seg display

boards/xtensa/esp32/common/include/esp32_ht16k33.h

@@ -0,0 +1,84 @@
+/****************************************************************************
+ * boards/xtensa/esp32/common/include/esp32_ht16k33.h
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_BOARD_HT16K33_H
+#define __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_BOARD_HT16K33_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_ht16k33_initialize
+ *
+ * Description:
+ *   Initialize and register the HT16K32 LED Display.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/slcdN
+ *   busno - The I2C bus number
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_ht16k33_initialize(int devno, int busno);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BOARDS_XTENSA_ESP32_COMMON_INCLUDE_BOARD_HT16K33_H */

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

@@ -42,6 +42,10 @@ ifeq ($(CONFIG_SENSORS_BMP180),y)
   CSRCS += esp32_bmp180.c
 endif
 
+ifeq ($(CONFIG_LCD_HT16K33),y)
+  CSRCS += esp32_ht16k33.c
+endif
+
 ifeq ($(CONFIG_CAN_MCP2515),y)
   CSRCS += esp32_mcp2515.c
 endif

boards/xtensa/esp32/common/src/esp32_ht16k33.c

@@ -0,0 +1,109 @@
+/****************************************************************************
+ * boards/xtensa/esp32/common/src/esp32_ht16k33.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 <errno.h>
+#include <debug.h>
+
+#include <nuttx/i2c/i2c_master.h>
+#include <nuttx/lcd/ht16k33.h>
+
+#include "esp32_board_i2c.h"
+#include "esp32_i2c.h"
+#include "esp32_ht16k33.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_ht16k33_initialize
+ *
+ * Description:
+ *   Initialize and register the BMP180 Pressure Sensor driver.
+ *
+ * Input Parameters:
+ *   devno - The device number, used to build the device path as /dev/pressN
+ *   busno - The I2C bus number
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int board_ht16k33_initialize(int devno, int busno)
+{
+  struct i2c_master_s *i2c;
+  int ret;
+
+  sninfo("Initializing HT16K33!\n");
+
+  /* Initialize I2C Bus */
+
+  i2c = esp32_i2cbus_initialize(busno);
+
+  if (i2c)
+    {
+      /* Register the HT16K33 Driver at the specified location. */
+
+      ret = ht16k33_register(devno, i2c);
+      if (ret < 0)
+        {
+          lcderr("ERROR: ht16k33_register(%d) failed: %d\n", devno, ret);
+          return ret;
+        }
+    }
+  else
+    {
+      ret = -ENODEV;
+    }
+
+  return ret;
+}
+

boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c

@@ -74,6 +74,10 @@
 #  include "esp32_bmp180.h"
 #endif
 
+#ifdef CONFIG_LCD_HT16K33
+#  include "esp32_ht16k33.h"
+#endif
+
 #ifdef CONFIG_ESP32_AES_ACCELERATOR
 #  include "esp32_aes.h"
 #endif
@@ -349,6 +353,18 @@ int esp32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_LCD_HT16K33
+  /* Try to register HT16K33 in the I2C0 */
+
+  ret = board_ht16k33_initialize(0, 0);
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "Failed to initialize HT16K33 driver: %d\n", ret);
+      return ret;
+    }
+#endif
+
 #ifdef CONFIG_INPUT_BUTTONS
   /* Register the BUTTON driver */