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https://github.com/apache/nuttx.git
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boards/szpi-esp32s3: Add support for ST7789 LCD
Expanded IO0 for SPI C/S, GPIO39 for SPI D/C. Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
This commit is contained in:
wangjianyu3
committed by
Alan C. Assis
Alan C. Assis
parent
c97307b24a
commit
8af44d0385
@@ -52,3 +52,7 @@ endif
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ifeq ($(CONFIG_IOEXPANDER_PCA9557),y)
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CSRCS += esp32s3_pca9557.c
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endif
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ifeq ($(CONFIG_LCD),y)
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CSRCS += esp32s3_board_lcd.c
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endif
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@@ -27,6 +27,7 @@
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* Included Files
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****************************************************************************/
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#include <nuttx/board.h>
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#include <nuttx/config.h>
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#include <nuttx/compiler.h>
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#include <stdint.h>
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@@ -35,8 +36,9 @@
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* Pre-processor Definitions
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****************************************************************************/
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#define GPIO_LCD_DC (39)
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#define GPIO_LCD_RST (-1)
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#define GPIO_LCD_DC (39)
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#define GPIO_LCD_RST (-1)
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#define SZPI_LCD_CS_PATH "/dev/gpio0"
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/****************************************************************************
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* Public Types
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@@ -0,0 +1,167 @@
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/****************************************************************************
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* boards/xtensa/esp32s3/lckfb-szpi-esp32s3/src/esp32s3_board_lcd.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <nuttx/signal.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/st7789.h>
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#include <nuttx/fs/fs.h>
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#include <arch/board/board.h>
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#include "esp32s3_gpio.h"
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#include "esp32s3_spi.h"
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#include "hardware/esp32s3_gpio_sigmap.h"
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#include "esp32s3-szpi.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct spi_dev_s *g_spidev;
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static struct lcd_dev_s *g_lcd;
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_lcd_initialize
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*
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* Description:
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* Initialize the LCD video hardware. The initial state of the LCD is
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* fully initialized, display memory cleared, and the LCD ready to use, but
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* with the power setting at 0 (full off).
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int board_lcd_initialize(void)
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{
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ssize_t n;
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int fd;
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/* Pull down C/S */
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fd = nx_open(SZPI_LCD_CS_PATH, O_RDWR);
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if (fd < 0)
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{
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spierr("open C/S pin failed\n");
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return -ENODEV;
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}
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n = nx_write(fd, "1", 1);
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nx_close(fd);
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if (n != 1)
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{
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spierr("write C/S pin failed\n");
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return -EIO;
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}
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/* Turn on LCD backlight */
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g_spidev = esp32s3_spibus_initialize(ESP32S3_SPI2);
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if (!g_spidev)
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{
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lcderr("ERROR: Failed to initialize SPI port %d\n", ESP32S3_SPI2);
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return -ENODEV;
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}
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g_lcd = st7789_lcdinitialize(g_spidev);
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if (!g_lcd)
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{
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lcderr("ERROR: st7789_lcdinitialize() failed\n");
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return -ENODEV;
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}
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return OK;
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}
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/****************************************************************************
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* Name: board_lcd_getdev
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*
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* Description:
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* Return a a reference to the LCD object for the specified LCD. This
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* allows support for multiple LCD devices.
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*
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* Input Parameters:
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* devno - LCD device nmber
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*
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* Returned Value:
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* LCD device pointer if success or NULL if failed.
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*
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****************************************************************************/
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struct lcd_dev_s *board_lcd_getdev(int devno)
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{
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if (!g_lcd)
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{
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lcderr("ERROR: Failed to bind SPI port %d to LCD %d\n",
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ESP32S3_SPI2, devno);
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}
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else
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{
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lcdinfo("SPI port %d bound to LCD %d\n", ESP32S3_SPI2, devno);
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return g_lcd;
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}
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return NULL;
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}
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/****************************************************************************
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* Name: board_lcd_uninitialize
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*
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* Description:
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* Uninitialize the LCD support
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void board_lcd_uninitialize(void)
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{
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/* Turn the display off */
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g_lcd->setpower(g_lcd, 0);
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}
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@@ -28,9 +28,11 @@
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#include <stdint.h>
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#include <stdbool.h>
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#include <fcntl.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/fs/fs.h>
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#include "esp32s3_gpio.h"
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#include "esp32s3-szpi.h"
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@@ -85,6 +87,29 @@ int esp32s3_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
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#endif
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#if defined(CONFIG_ESP32S3_SPI2) && defined(CONFIG_ESP32S3_SPI_UDCS)
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void esp32s3_spi2_select(struct spi_dev_s *dev, uint32_t devid, bool select)
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{
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ssize_t n;
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int fd;
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fd = nx_open(SZPI_LCD_CS_PATH, O_RDWR);
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if (fd < 0)
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{
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spierr("open C/S pin failed\n");
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return;
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}
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n = nx_write(fd, select ? "0" : "1", 1);
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if (n != 1)
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{
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spierr("write C/S pin failed\n");
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}
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nx_close(fd);
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}
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#endif
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/****************************************************************************
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* Name: esp32s3_spi3_status
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****************************************************************************/
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