configs/stm32f4disovery: Add support for JLX12864G display on STM32F4 Discovery board

configs/stm32f4discovery/include/board.h

@@ -47,12 +47,6 @@
 #  include <stdbool.h>
 #endif
 
-#ifdef __KERNEL__
-#  include "stm32_rcc.h"
-#  include "stm32_sdio.h"
-#  include "stm32.h"
-#endif
-
 /************************************************************************************
  * Pre-processor Definitions
  ************************************************************************************/

configs/stm32f4discovery/src/Makefile

@@ -68,6 +68,10 @@ ifeq ($(CONFIG_SENSORS_BMP180),y)
 CSRCS += stm32_bmp180.c
 endif
 
+ifeq ($(CONFIG_LCD_ST7567),y)
+  CSRCS += stm32_st7567.c
+endif
+
 ifeq ($(CONFIG_SENSORS_MAX31855),y)
 CSRCS += stm32_max31855.c
 endif

configs/stm32f4discovery/src/stm32_bringup.c

@@ -133,6 +133,16 @@ int stm32_bringup(void)
     }
 #endif
 
+#ifdef CONFIG_VIDEO_FB
+  /* Initialize and register the framebuffer driver */
+
+  ret = fb_register(0, 0);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: fb_register() failed: %d\n", ret);
+    }
+#endif
+
 #ifdef HAVE_SDIO
   /* Initialize the SDIO block driver */
 

configs/stm32f4discovery/src/stm32_spi.c

@@ -75,6 +75,9 @@ void weak_function stm32_spidev_initialize(void)
 #if defined(CONFIG_STM32_SPI2) && defined(CONFIG_SENSORS_MAX31855)
   (void)stm32_configgpio(GPIO_MAX31855_CS); /* MAX31855 chip select */
 #endif
+#if defined(CONFIG_LCD_ST7567)
+  (void)stm32_configgpio(STM32_LCD_CS);       /* ST7567 chip select */
+#endif
 #if defined(CONFIG_STM32_SPI2) && defined(CONFIG_SENSORS_MAX6675)
   (void)stm32_configgpio(GPIO_MAX6675_CS); /* MAX6675 chip select */
 #endif
@@ -120,6 +123,12 @@ void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
 {
   spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
 
+#ifdef CONFIG_LCD_ST7567
+  if (devid == SPIDEV_DISPLAY(0))
+    {
+      stm32_gpiowrite(STM32_LCD_CS, !selected);
+    }
+#endif
 #if defined(CONFIG_LCD_UG2864AMBAG01) || defined(CONFIG_LCD_UG2864HSWEG01) || \
     defined(CONFIG_LCD_SSD1351)
   if (devid == SPIDEV_DISPLAY(0))
@@ -203,6 +212,18 @@ uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, uint32_t devid)
 #ifdef CONFIG_STM32_SPI1
 int stm32_spi1cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd)
 {
+#ifdef CONFIG_LCD_ST7567
+  if (devid == SPIDEV_DISPLAY(0))
+    {
+      /*  This is the Data/Command control pad which determines whether the
+       *  data bits are data or a command.
+       */
+
+      (void)stm32_gpiowrite(STM32_LCD_RS, !cmd);
+
+      return OK;
+    }
+#endif
 #if defined(CONFIG_LCD_UG2864AMBAG01) || defined(CONFIG_LCD_UG2864HSWEG01) || \
     defined(CONFIG_LCD_SSD1351)
   if (devid == SPIDEV_DISPLAY(0))

configs/stm32f4discovery/src/stm32_st7567.c

@@ -0,0 +1,153 @@
+/****************************************************************************
+ * configs/stm32f4discovery/src/stm32_st7567.c
+ *
+ *   Copyright (C) 2016 Uniquix Tecnologia. All rights reserved.
+ *   Author: Alan Carvalho de Assis <acassis@gmail.com>
+ *
+ * I used the JLX12864G-086 LCD module based on ST7567 controller.
+ *
+ * Based on configs/zkit-arm-1769/src/lpc17_lcd.c
+ *
+ *   Copyright (C) 2013 Zilogic Systems. All rights reserved.
+ *   Author: Manikandan <code@zilogic.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * 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/st7567.h>
+
+#include "up_arch.h"
+#include "up_internal.h"
+
+#include "stm32_gpio.h"
+#include "stm32_spi.h"
+#include "stm32f4discovery.h"
+
+#ifdef CONFIG_LCD_ST7567
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define LCD_SPI_PORTNO 1   /* On SPI1 */
+
+#ifndef CONFIG_LCD_CONTRAST
+#  define CONFIG_LCD_CONTRAST 0x1f
+#endif
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+FAR struct spi_dev_s *g_spidev;
+FAR struct lcd_dev_s *g_lcddev;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_lcd_initialize
+ ****************************************************************************/
+
+int board_lcd_initialize(void)
+{
+  stm32_configgpio(STM32_LCD_RST);
+  stm32_configgpio(STM32_LCD_RS);
+  stm32_gpiowrite(STM32_LCD_RST, 1);
+  stm32_gpiowrite(STM32_LCD_RS, 1);
+
+  g_spidev = stm32_spibus_initialize(LCD_SPI_PORTNO);
+
+  if (!g_spidev)
+    {
+      lcderr("ERROR: Failed to initialize SPI port %d\n", LCD_SPI_PORTNO);
+      return 0;
+    }
+
+  stm32_gpiowrite(STM32_LCD_RST, 0);
+  up_mdelay(1);
+  stm32_gpiowrite(STM32_LCD_RST, 1);
+  return 1;
+}
+
+/****************************************************************************
+ * Name: board_lcd_getdev
+ ****************************************************************************/
+
+FAR struct lcd_dev_s *board_lcd_getdev(int lcddev)
+{
+  g_lcddev = st7567_initialize(g_spidev, lcddev);
+  if (!g_lcddev)
+    {
+      lcderr("ERROR: Failed to bind SPI port 1 to LCD %d: %d\n", lcddev);
+    }
+  else
+    {
+      lcdinfo("SPI port 1 bound to LCD %d\n", lcddev);
+
+      /* And turn the LCD on (CONFIG_LCD_MAXPOWER should be 1) */
+
+      (void)g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
+
+      /* Set contrast to right value, otherwise background too dark */
+
+      (void)g_lcddev->setcontrast(g_lcddev, CONFIG_LCD_CONTRAST);
+
+      return g_lcddev;
+    }
+
+  return NULL;
+}
+
+/****************************************************************************
+ * Name: board_lcd_uninitialize
+ ****************************************************************************/
+
+void board_lcd_uninitialize(void)
+{
+  /* TO-FIX */
+}
+
+#endif /* CONFIG_LCD_ST7567 */

configs/stm32f4discovery/src/stm32f4discovery.h

@@ -322,6 +322,17 @@
 #  define GPIO_OLED_DC    GPIO_OLED_A0
 #endif
 
+/* Display JLX12864G */
+
+#define STM32_LCD_RST   (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+                           GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN6)
+
+#define STM32_LCD_CS    (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+                           GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN7)
+
+#define STM32_LCD_RS    (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
+                           GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN8)
+
 /* STM32F4DIS-BB MicroSD
  *
  * ---------- ------------- ------------------------------