From 94bb3e52f5a5635ba0aa089e4241a83f6785aac2 Mon Sep 17 00:00:00 2001 From: Alan Carvalho de Assis Date: Fri, 25 Jul 2025 17:28:29 -0300 Subject: [PATCH] boards/weact-stm32h743: Add support to ST7735 display Signed-off-by: Alan C. Assis --- .../weact-stm32h743/configs/st7735/defconfig | 65 ++++++++ .../stm32h7/weact-stm32h743/include/board.h | 8 +- .../weact-stm32h743/src/CMakeLists.txt | 6 + .../arm/stm32h7/weact-stm32h743/src/Makefile | 8 +- .../stm32h7/weact-stm32h743/src/stm32_boot.c | 13 ++ .../weact-stm32h743/src/stm32_bringup.c | 14 ++ .../weact-stm32h743/src/stm32_lcd_st7735.c | 118 ++++++++++++++ .../stm32h7/weact-stm32h743/src/stm32_spi.c | 152 ++++++++++++++++++ .../weact-stm32h743/src/weact-stm32h743.h | 22 +++ 9 files changed, 404 insertions(+), 2 deletions(-) create mode 100644 boards/arm/stm32h7/weact-stm32h743/configs/st7735/defconfig create mode 100644 boards/arm/stm32h7/weact-stm32h743/src/stm32_lcd_st7735.c create mode 100644 boards/arm/stm32h7/weact-stm32h743/src/stm32_spi.c diff --git a/boards/arm/stm32h7/weact-stm32h743/configs/st7735/defconfig b/boards/arm/stm32h7/weact-stm32h743/configs/st7735/defconfig new file mode 100644 index 0000000000..26a4395422 --- /dev/null +++ b/boards/arm/stm32h7/weact-stm32h743/configs/st7735/defconfig @@ -0,0 +1,65 @@ +# +# 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_NSH_DISABLE_IFCONFIG is not set +# CONFIG_NSH_DISABLE_PS is not set +# CONFIG_STANDARD_SERIAL is not set +# CONFIG_STM32H7_USE_LEGACY_PINMAP is not set +CONFIG_ARCH="arm" +CONFIG_ARCH_BOARD="weact-stm32h743" +CONFIG_ARCH_BOARD_WEACT_STM32H743=y +CONFIG_ARCH_CHIP="stm32h7" +CONFIG_ARCH_CHIP_STM32H743VI=y +CONFIG_ARCH_CHIP_STM32H7=y +CONFIG_ARCH_CHIP_STM32H7_CORTEXM7=y +CONFIG_ARCH_STACKDUMP=y +CONFIG_ARMV7M_DCACHE=y +CONFIG_ARMV7M_DCACHE_WRITETHROUGH=y +CONFIG_ARMV7M_DTCM=y +CONFIG_ARMV7M_ICACHE=y +CONFIG_BOARD_LOOPSPERMSEC=43103 +CONFIG_BUILTIN=y +CONFIG_DEBUG_SYMBOLS=y +CONFIG_DRIVERS_VIDEO=y +CONFIG_EXAMPLES_FB=y +CONFIG_EXPERIMENTAL=y +CONFIG_HAVE_CXX=y +CONFIG_HAVE_CXXINITIALIZE=y +CONFIG_INIT_ENTRYPOINT="nsh_main" +CONFIG_INTELHEX_BINARY=y +CONFIG_LCD=y +CONFIG_LCD_FRAMEBUFFER=y +CONFIG_LCD_NOGETRUN=y +CONFIG_LCD_PORTRAIT=y +CONFIG_LCD_ST7735=y +CONFIG_LCD_ST7735_BGR=y +CONFIG_LCD_ST7735_INVCOLOR=y +CONFIG_LCD_ST7735_XOFFSET=26 +CONFIG_LCD_ST7735_XRES=80 +CONFIG_LCD_ST7735_YOFFSET=1 +CONFIG_LINE_MAX=64 +CONFIG_MM_REGIONS=4 +CONFIG_NSH_ARCHINIT=y +CONFIG_NSH_BUILTIN_APPS=y +CONFIG_NSH_FILEIOSIZE=512 +CONFIG_NSH_READLINE=y +CONFIG_PREALLOC_TIMERS=4 +CONFIG_RAM_SIZE=245760 +CONFIG_RAM_START=0x20010000 +CONFIG_RAW_BINARY=y +CONFIG_RR_INTERVAL=200 +CONFIG_SCHED_WAITPID=y +CONFIG_SPI_CMDDATA=y +CONFIG_START_DAY=11 +CONFIG_START_MONTH=5 +CONFIG_START_YEAR=2024 +CONFIG_STM32H7_SPI4=y +CONFIG_STM32H7_USART1=y +CONFIG_SYSTEM_NSH=y +CONFIG_TASK_NAME_SIZE=0 +CONFIG_USART1_SERIAL_CONSOLE=y +CONFIG_VIDEO_FB=y diff --git a/boards/arm/stm32h7/weact-stm32h743/include/board.h b/boards/arm/stm32h7/weact-stm32h743/include/board.h index 5acb6320bf..4072595452 100644 --- a/boards/arm/stm32h7/weact-stm32h743/include/board.h +++ b/boards/arm/stm32h7/weact-stm32h743/include/board.h @@ -245,7 +245,7 @@ /* SPI45 clock source - APB (PCLK2?) */ -#define STM32_RCC_D2CCIP1R_SPI45SRC RCC_D2CCIP1R_SPI45SEL_APB +#define STM32_RCC_D2CCIP1R_SPI45SRC RCC_D2CCIP1R_SPI45SEL_PLL2 /* SPI6 clock source - APB (PCLK4) */ @@ -369,6 +369,12 @@ #define GPIO_USART1_RX (GPIO_USART1_RX_1 | GPIO_SPEED_100MHz) /* PB15 */ #define GPIO_USART1_TX (GPIO_USART1_TX_1 | GPIO_SPEED_100MHz) /* PB14 */ +/* SPI4 LCD ST7735 (Only SCK and MOSI pins) */ + +#define GPIO_SPI4_SCK (GPIO_SPI4_SCK_1 | GPIO_SPEED_50MHz) /* PE12 */ +#define GPIO_SPI4_MOSI (GPIO_SPI4_MOSI_1 | GPIO_SPEED_50MHz) /* PE14 */ +#define GPIO_SPI4_MISO 0 + /* OTGFS */ #define GPIO_OTGFS_DM (GPIO_OTGFS_DM_0|GPIO_SPEED_100MHz) /* PA11 */ diff --git a/boards/arm/stm32h7/weact-stm32h743/src/CMakeLists.txt b/boards/arm/stm32h7/weact-stm32h743/src/CMakeLists.txt index e74471ede6..ee8fb5bff0 100644 --- a/boards/arm/stm32h7/weact-stm32h743/src/CMakeLists.txt +++ b/boards/arm/stm32h7/weact-stm32h743/src/CMakeLists.txt @@ -28,6 +28,12 @@ else() list(APPEND SRCS stm32_userleds.c) endif() +if(CONFIG_VIDEO_FB) + if(CONFIG_LCD_ST7735) + list(APPEND SRCS stm32_lcd_st7735.c) + endif() +endif() + if(CONFIG_STM32H7_SDMMC) list(APPEND SRCS stm32_sdmmc.c) endif() diff --git a/boards/arm/stm32h7/weact-stm32h743/src/Makefile b/boards/arm/stm32h7/weact-stm32h743/src/Makefile index a4cd1ebebd..252922dff7 100644 --- a/boards/arm/stm32h7/weact-stm32h743/src/Makefile +++ b/boards/arm/stm32h7/weact-stm32h743/src/Makefile @@ -22,7 +22,7 @@ include $(TOPDIR)/Make.defs -CSRCS = stm32_boot.c stm32_bringup.c stm32_usb.c stm32_ioctl.c +CSRCS = stm32_boot.c stm32_bringup.c stm32_usb.c stm32_ioctl.c stm32_spi.c ifeq ($(CONFIG_ARCH_LEDS),y) CSRCS += stm32_autoleds.c @@ -30,6 +30,12 @@ else CSRCS += stm32_userleds.c endif +ifeq ($(CONFIG_VIDEO_FB),y) + ifeq ($(CONFIG_LCD_ST7735),y) + CSRCS += stm32_lcd_st7735.c + endif +endif + ifeq ($(CONFIG_STM32H7_SDMMC),y) CSRCS += stm32_sdmmc.c endif diff --git a/boards/arm/stm32h7/weact-stm32h743/src/stm32_boot.c b/boards/arm/stm32h7/weact-stm32h743/src/stm32_boot.c index 977e8f7903..f753999488 100644 --- a/boards/arm/stm32h7/weact-stm32h743/src/stm32_boot.c +++ b/boards/arm/stm32h7/weact-stm32h743/src/stm32_boot.c @@ -52,6 +52,19 @@ void stm32_boardinitialize(void) { +#if defined(CONFIG_STM32H7_SPI1) || defined(CONFIG_STM32H7_SPI2) || \ + defined(CONFIG_STM32H7_SPI3) || defined(CONFIG_STM32H7_SPI4) || \ + defined(CONFIG_STM32H7_SPI6) + /* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak + * function stm32_spidev_initialize() has been brought into the link. + */ + + if (stm32_spidev_initialize) + { + stm32_spidev_initialize(); + } +#endif + #ifdef CONFIG_ARCH_LEDS /* Configure on-board LEDs if LED support has been selected. */ diff --git a/boards/arm/stm32h7/weact-stm32h743/src/stm32_bringup.c b/boards/arm/stm32h7/weact-stm32h743/src/stm32_bringup.c index 935b7bc5fd..e9335b3406 100644 --- a/boards/arm/stm32h7/weact-stm32h743/src/stm32_bringup.c +++ b/boards/arm/stm32h7/weact-stm32h743/src/stm32_bringup.c @@ -38,6 +38,10 @@ #include "stm32_gpio.h" +#ifdef CONFIG_VIDEO_FB +# include +#endif + /**************************************************************************** * Private Functions ****************************************************************************/ @@ -96,5 +100,15 @@ 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 + return OK; } diff --git a/boards/arm/stm32h7/weact-stm32h743/src/stm32_lcd_st7735.c b/boards/arm/stm32h7/weact-stm32h743/src/stm32_lcd_st7735.c new file mode 100644 index 0000000000..a8f0bb7042 --- /dev/null +++ b/boards/arm/stm32h7/weact-stm32h743/src/stm32_lcd_st7735.c @@ -0,0 +1,118 @@ +/**************************************************************************** + * boards/arm/stm32h7/weact-stm32h743/src/stm32_lcd_st7735.c + * + * SPDX-License-Identifier: Apache-2.0 + * + * 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 + +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "arm_internal.h" +#include "stm32_gpio.h" +#include "stm32_spi.h" +#include "weact-stm32h743.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define LCD_SPI_PORTNO 4 + +/**************************************************************************** + * 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(GPIO_LCD_DC); + stm32_configgpio(GPIO_LCD_LED); + + stm32_gpiowrite(GPIO_LCD_LED, false); + + 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; + } + + g_lcd = st7735_lcdinitialize(g_spidev); + + 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. + * + ****************************************************************************/ + +struct lcd_dev_s *board_lcd_getdev(int devno) +{ + return g_lcd; +} + +/**************************************************************************** + * Name: board_lcd_uninitialize + * + * Description: + * Uninitialize the LCD support + * + ****************************************************************************/ + +void board_lcd_uninitialize(void) +{ + /* Turn the display off */ + + g_lcd->setpower(g_lcd, 0); +} diff --git a/boards/arm/stm32h7/weact-stm32h743/src/stm32_spi.c b/boards/arm/stm32h7/weact-stm32h743/src/stm32_spi.c new file mode 100644 index 0000000000..964aa31714 --- /dev/null +++ b/boards/arm/stm32h7/weact-stm32h743/src/stm32_spi.c @@ -0,0 +1,152 @@ +/**************************************************************************** + * boards/arm/stm32h7/weact-stm32h743/src/stm32_spi.c + * + * SPDX-License-Identifier: Apache-2.0 + * + * 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 + +#include +#include +#include +#include + +#include + +#include "arm_internal.h" +#include "chip.h" +#include "stm32_gpio.h" +#include "stm32_spi.h" + +#include "weact-stm32h743.h" +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: stm32_spidev_initialize + * + * Description: + * Called to configure SPI chip select GPIO pins for the weact-stm32h743 + * board. + * + ****************************************************************************/ + +void stm32_spidev_initialize(void) +{ +#ifdef CONFIG_LCD_ST7735 + stm32_configgpio(GPIO_LCD_CS); /* ST7735 chip select */ +#endif +} + +/**************************************************************************** + * Name: stm32_spi1/2/3select and stm32_spi1/2/3status + * + * Description: + * The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status + * must be provided by board-specific logic. They are implementations of + * the select and status methods of the SPI interface defined by struct + * spi_ops_s (see include/nuttx/spi/spi.h). All other methods + * (including stm32_spibus_initialize()) are provided by common STM32 logic. + * To use this common SPI logic on your board: + * + * 1. Provide logic in stm32_boardinitialize() to configure SPI chip select + * pins. + * 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions + * 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 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 + * the SPI MMC/SD driver). + * + ****************************************************************************/ + +#ifdef CONFIG_STM32H7_SPI4 +void stm32_spi4select(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_ST7735 + if (devid == SPIDEV_DISPLAY(0)) + { + stm32_gpiowrite(GPIO_LCD_CS, !selected); + } +#endif +} + +uint8_t stm32_spi4status(struct spi_dev_s *dev, uint32_t devid) +{ + return 0; +} +#endif + +/**************************************************************************** + * Name: stm32_spi4cmddata + * + * Description: + * This is an implementation of the cmddata method of the SPI + * interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h). + * + * Input Parameters: + * + * spi - SPI device that controls the bus the device that requires the CMD/ + * DATA selection. + * devid - If there are multiple devices on the bus, this selects which one + * to select cmd or data. NOTE: This design restricts, for example, + * one one SPI display per SPI bus. + * cmd - true: select command; false: select data + * + * Returned Value: + * None + * + ****************************************************************************/ + +#ifdef CONFIG_SPI_CMDDATA +#ifdef CONFIG_STM32H7_SPI4 +int stm32_spi4cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd) +{ +#ifdef CONFIG_LCD_ST7735 + if (devid == SPIDEV_DISPLAY(0)) + { + /* This is the Data/Command control pad which determines whether the + * data bits are data or a command. + */ + + stm32_gpiowrite(GPIO_LCD_DC, !cmd); + + return OK; + } +#endif + + return -ENODEV; +} +#endif +#endif /* CONFIG_SPI_CMDDATA */ diff --git a/boards/arm/stm32h7/weact-stm32h743/src/weact-stm32h743.h b/boards/arm/stm32h7/weact-stm32h743/src/weact-stm32h743.h index cafd40a9f7..0d39b8f52b 100644 --- a/boards/arm/stm32h7/weact-stm32h743/src/weact-stm32h743.h +++ b/boards/arm/stm32h7/weact-stm32h743/src/weact-stm32h743.h @@ -115,6 +115,17 @@ #define GPIO_BTN_USER (GPIO_INPUT | GPIO_FLOAT | GPIO_EXTI | GPIO_PORTC | GPIO_PIN13) +/* LCD ST7735 */ + +#define GPIO_LCD_DC (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_50MHz | \ + GPIO_OUTPUT_CLEAR | GPIO_PORTE | GPIO_PIN13) + +#define GPIO_LCD_CS (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_50MHz | \ + GPIO_OUTPUT_CLEAR | GPIO_PORTE | GPIO_PIN11) + +#define GPIO_LCD_LED (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_50MHz | \ + GPIO_OUTPUT_CLEAR | GPIO_PORTE | GPIO_PIN10) + /* SD Card * * PD4 Card detected pin @@ -137,6 +148,17 @@ * Public Function Prototypes ****************************************************************************/ +/**************************************************************************** + * Name: stm32_spidev_initialize + * + * Description: + * Called to configure SPI chip select GPIO pins for the Mikroe Clicker2 + * STM32 board. + * + ****************************************************************************/ + +void weak_function stm32_spidev_initialize(void); + /**************************************************************************** * Name: stm32_bringup *