[incubator-nuttx] 03/05: stm32f4discovery: Add support to APA102

[xi...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git

commit 483e152c93ae22c277f4b5ec271b087a588cab84
Author: Alan Carvalho de Assis <ac...@gmail.com>
AuthorDate: Mon Jul 25 18:39:50 2022 -0300

    stm32f4discovery: Add support to APA102
---
 boards/arm/stm32/stm32f4discovery/src/Make.defs    |   4 +
 .../arm/stm32/stm32f4discovery/src/stm32_apa102.c  | 109 +++++++++++++++++++++
 2 files changed, 113 insertions(+)

diff --git a/boards/arm/stm32/stm32f4discovery/src/Make.defs b/boards/arm/stm32/stm32f4discovery/src/Make.defs
index 98e33e0534..0542e7e855 100644
--- a/boards/arm/stm32/stm32f4discovery/src/Make.defs
+++ b/boards/arm/stm32/stm32f4discovery/src/Make.defs
@@ -123,6 +123,10 @@ CSRCS += stm32_ssd1289.c
 endif
 endif
 
+ifeq ($(CONFIG_LCD_APA102),y)
+CSRCS += stm32_apa102.c
+endif
+
 ifeq ($(CONFIG_LCD_SSD1351),y)
 CSRCS += stm32_ssd1351.c
 endif
diff --git a/boards/arm/stm32/stm32f4discovery/src/stm32_apa102.c b/boards/arm/stm32/stm32f4discovery/src/stm32_apa102.c
new file mode 100644
index 0000000000..3002e7d9d7
--- /dev/null
+++ b/boards/arm/stm32/stm32f4discovery/src/stm32_apa102.c
@@ -0,0 +1,109 @@
+/****************************************************************************
+ * boards/arm/stm32/stm32f4discovery/src/stm32_apa102.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/spi/spi.h>
+#include <nuttx/lcd/lcd.h>
+#include <nuttx/lcd/apa102.h>
+
+#include "stm32_gpio.h"
+#include "stm32_spi.h"
+#include "stm32f4discovery.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define LCD_SPI_PORTNO 1   /* On SPI1 */
+
+#ifndef CONFIG_LCD_CONTRAST
+#  define CONFIG_LCD_CONTRAST 60
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+struct spi_dev_s *g_spidev;
+struct lcd_dev_s *g_lcddev;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_lcd_initialize
+ ****************************************************************************/
+
+int board_lcd_initialize(void)
+{
+  g_spidev = stm32_spibus_initialize(LCD_SPI_PORTNO);
+
+  if (!g_spidev)
+    {
+      lcderr("ERROR: Failed to initialize SPI port %d\n", LCD_SPI_PORTNO);
+      return -ENODEV;
+    }
+
+  return OK;
+}
+
+/****************************************************************************
+ * Name: board_lcd_getdev
+ ****************************************************************************/
+
+struct lcd_dev_s *board_lcd_getdev(int lcddev)
+{
+  g_lcddev = apa102_initialize(g_spidev, lcddev);
+  if (!g_lcddev)
+    {
+      lcderr("ERROR: Failed to bind SPI port 1 to LCD %d\n", lcddev);
+    }
+  else
+    {
+      lcdinfo("SPI port 1 bound to LCD %d\n", lcddev);
+
+      return g_lcddev;
+    }
+
+  return NULL;
+}
+
+/****************************************************************************
+ * Name: board_lcd_uninitialize
+ ****************************************************************************/
+
+void board_lcd_uninitialize(void)
+{
+  /* TO-FIX */
+}
+