stm32f4discovery: Add support to LCD ST7789

boards/arm/stm32/stm32f4discovery/configs/st7789/defconfig

@@ -0,0 +1,69 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_FPU is not set
+# CONFIG_NSH_ARGCAT is not set
+# CONFIG_NSH_CMDOPT_HEXDUMP is not set
+# CONFIG_NSH_CMDPARMS is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32f4discovery"
+CONFIG_ARCH_BOARD_STM32F4_DISCOVERY=y
+CONFIG_ARCH_BUTTONS=y
+CONFIG_ARCH_CHIP="stm32"
+CONFIG_ARCH_CHIP_STM32=y
+CONFIG_ARCH_CHIP_STM32F407VG=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LATE_INITIALIZE=y
+CONFIG_BOARD_LOOPSPERMSEC=16717
+CONFIG_BUILTIN=y
+CONFIG_DRIVERS_VIDEO=y
+CONFIG_EXAMPLES_FB=y
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_INTELHEX_BINARY=y
+CONFIG_LCD=y
+CONFIG_LCD_FRAMEBUFFER=y
+CONFIG_LCD_NOGETRUN=y
+CONFIG_LCD_PORTRAIT=y
+CONFIG_LCD_ST7789=y
+CONFIG_MAX_TASKS=16
+CONFIG_MM_REGIONS=2
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_NXFONTS_DISABLE_1BPP=y
+CONFIG_NXFONTS_DISABLE_24BPP=y
+CONFIG_NXFONTS_DISABLE_2BPP=y
+CONFIG_NXFONTS_DISABLE_32BPP=y
+CONFIG_NXFONTS_DISABLE_4BPP=y
+CONFIG_NXFONTS_DISABLE_8BPP=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=114688
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_SPI_CMDDATA=y
+CONFIG_START_DAY=6
+CONFIG_START_MONTH=12
+CONFIG_START_YEAR=2011
+CONFIG_STM32_JTAG_SW_ENABLE=y
+CONFIG_STM32_PWR=y
+CONFIG_STM32_SPI1=y
+CONFIG_STM32_USART2=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_USART2_RXBUFSIZE=128
+CONFIG_USART2_SERIAL_CONSOLE=y
+CONFIG_USART2_TXBUFSIZE=128
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_VIDEO_FB=y

boards/arm/stm32/stm32f4discovery/src/Make.defs

@@ -175,6 +175,10 @@ ifeq ($(CONFIG_WL_GS2200M),y)
 CSRCS += stm32_gs2200m.c
 endif
 
+ifeq ($(CONFIG_LCD_ST7789),y)
+CSRCS += stm32_st7789.c
+endif
+
 DEPPATH += --dep-path board
 VPATH += :board
 CFLAGS += $(shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board)

boards/arm/stm32/stm32f4discovery/src/stm32_spi.c

@@ -63,7 +63,8 @@
  * Name: stm32_spidev_initialize
  *
  * Description:
- *   Called to configure SPI chip select GPIO pins for the stm32f4discovery board.
+ *   Called to configure SPI chip select GPIO pins for the stm32f4discovery
+ *   board.
  *
  ****************************************************************************/
 
@@ -85,11 +86,11 @@ void weak_function stm32_spidev_initialize(void)
   stm32_configgpio(GPIO_MAX7219_CS);  /* MAX7219 chip select */
 #endif
 #ifdef CONFIG_LPWAN_SX127X
-  stm32_configgpio(GPIO_SX127X_CS);   /* SX127x chip select*/
+  stm32_configgpio(GPIO_SX127X_CS);   /* SX127x chip select */
 #endif
 
-#if defined(CONFIG_LCD_ST7567)
+#if defined(CONFIG_LCD_ST7567) || defined(CONFIG_LCD_ST7567)
-  stm32_configgpio(STM32_LCD_CS);     /* ST7567 chip select */
+  stm32_configgpio(STM32_LCD_CS);     /* ST7567/ST7789 chip select */
 #endif
 #if defined(CONFIG_STM32_SPI2) && defined(CONFIG_SENSORS_MAX6675)
   stm32_configgpio(GPIO_MAX6675_CS); /* MAX6675 chip select */
@@ -123,8 +124,8 @@ void weak_function stm32_spidev_initialize(void)
  *      in your board-specific logic.  These functions will perform chip
  *      selection and status operations using GPIOs in the way your board
  *      is configured.
- *   3. Add a calls to stm32_spibus_initialize() in your low level application
+ *   3. Add a calls to stm32_spibus_initialize() in your low level
- *      initialization logic
+ *      application initialization logic
  *   4. The handle returned by stm32_spibus_initialize() may then be used to
  *      bind the SPI driver to higher level logic (e.g., calling
  *      mmcsd_spislotinitialize(), for example, will bind the SPI driver to
@@ -133,9 +134,11 @@ void weak_function stm32_spidev_initialize(void)
  ****************************************************************************/
 
 #ifdef CONFIG_STM32_SPI1
-void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
+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");
+  spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" :
+          "de-assert");
 
 #ifdef CONFIG_ENC28J60
   if (devid == SPIDEV_ETHERNET(0))
@@ -153,7 +156,7 @@ void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
     }
 #endif
 
-#ifdef CONFIG_LCD_ST7567
+#if defined(CONFIG_LCD_ST7567) || defined(CONFIG_LCD_ST7789)
   if (devid == SPIDEV_DISPLAY(0))
     {
       stm32_gpiowrite(STM32_LCD_CS, !selected);
@@ -196,9 +199,11 @@ uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, uint32_t devid)
 #endif
 
 #ifdef CONFIG_STM32_SPI2
-void stm32_spi2select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
+void stm32_spi2select(FAR struct spi_dev_s *dev, uint32_t devid,
+                      bool selected)
 {
-  spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" :
+          "de-assert");
 
 #if defined(CONFIG_SENSORS_MAX31855)
   if (devid == SPIDEV_TEMPERATURE(0))
@@ -239,9 +244,11 @@ uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, uint32_t devid)
 #endif
 
 #ifdef CONFIG_STM32_SPI3
-void stm32_spi3select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
+void stm32_spi3select(FAR struct spi_dev_s *dev, uint32_t devid,
+                      bool selected)
 {
-  spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
+  spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" :
+          "de-assert");
 
 #if defined(CONFIG_WL_GS2200M)
   if (devid == SPIDEV_WIRELESS(0))
@@ -284,7 +291,7 @@ 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 defined(CONFIG_LCD_ST7567) || defined(CONFIG_LCD_ST7789)
   if (devid == SPIDEV_DISPLAY(0))
     {
       /*  This is the Data/Command control pad which determines whether the

boards/arm/stm32/stm32f4discovery/src/stm32_st7789.c

@@ -0,0 +1,129 @@
+/****************************************************************************
+ * boards/arm/stm32/stm32f4discovery/src/stm32_st7789.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/st7789.h>
+
+#include "stm32.h"
+#include "stm32_gpio.h"
+#include "stm32_spi.h"
+#include "stm32f4discovery.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define LCD_SPI_PORTNO 1
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct spi_dev_s *g_spidev;
+static struct lcd_dev_s *g_lcd = NULL;
+
+/****************************************************************************
+ * 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).
+ *
+ ****************************************************************************/
+
+int board_lcd_initialize(void)
+{
+  stm32_configgpio(STM32_LCD_RST);
+  stm32_configgpio(STM32_LCD_RS);
+
+  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;
+    }
+
+  stm32_gpiowrite(STM32_LCD_RST, 0);
+  up_mdelay(1);
+  stm32_gpiowrite(STM32_LCD_RST, 1);
+  up_mdelay(120);
+
+  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.
+ *
+ ****************************************************************************/
+
+FAR struct lcd_dev_s *board_lcd_getdev(int devno)
+{
+  g_lcd = st7789_lcdinitialize(g_spidev);
+  if (!g_lcd)
+    {
+      lcderr("ERROR: Failed to bind SPI port %d to LCD %d\n", LCD_SPI_PORTNO,
+             devno);
+    }
+  else
+    {
+      lcdinfo("SPI port %d bound to LCD %d\n", LCD_SPI_PORTNO, devno);
+      return g_lcd;
+    }
+
+  return NULL;
+}
+
+/****************************************************************************
+ * Name:  board_lcd_uninitialize
+ *
+ * Description:
+ *   Uninitialize the LCD support
+ *
+ ****************************************************************************/
+
+void board_lcd_uninitialize(void)
+{
+  /* Turn the display off */
+
+  g_lcd->setpower(g_lcd, 0);
+}