131 lines
3.9 KiB
C
131 lines
3.9 KiB
C
/****************************************************************************
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* boards/arm/stm32l4/nucleo-l476rg/src/stm32_pcd8544.c
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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 <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/spi/spi.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/lcd/pcd8544.h>
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#include "stm32l4_gpio.h"
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#include "stm32l4_spi.h"
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#include "nucleo-l476rg.h"
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#ifdef CONFIG_NX_LCDDRIVER
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define LCD_SPI_PORTNO 1 /* On SPI1 */
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#ifndef CONFIG_LCD_CONTRAST
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# define CONFIG_LCD_CONTRAST 60
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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struct spi_dev_s *g_spidev;
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struct lcd_dev_s *g_lcddev;
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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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int board_lcd_initialize(void)
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{
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/* Configure the GPIO pins */
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stm32l4_configgpio(STM32_LCD_RST);
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stm32l4_configgpio(STM32_LCD_CD);
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stm32l4_gpiowrite(STM32_LCD_RST, 1);
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stm32l4_gpiowrite(STM32_LCD_CD, 1);
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g_spidev = stm32l4_spibus_initialize(LCD_SPI_PORTNO);
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if (!g_spidev)
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{
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lcderr("ERROR: Failed to initialize SPI port %d\n", LCD_SPI_PORTNO);
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return -ENODEV;
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}
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stm32l4_gpiowrite(STM32_LCD_RST, 0);
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up_mdelay(10);
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stm32l4_gpiowrite(STM32_LCD_RST, 1);
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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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struct lcd_dev_s *board_lcd_getdev(int lcddev)
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{
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g_lcddev = pcd8544_initialize(g_spidev, lcddev);
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if (!g_lcddev)
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{
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lcderr("ERROR: Failed to bind SPI port 1 to LCD %d\n", lcddev);
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}
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else
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{
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lcdinfo("SPI port 1 bound to LCD %d\n", lcddev);
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/* And turn the LCD on (CONFIG_LCD_MAXPOWER should be 1) */
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g_lcddev->setpower(g_lcddev, CONFIG_LCD_MAXPOWER);
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/* Set contrast to right value, otherwise background too dark */
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g_lcddev->setcontrast(g_lcddev, CONFIG_LCD_CONTRAST);
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return g_lcddev;
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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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void board_lcd_uninitialize(void)
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{
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/* TO-FIX */
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}
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#endif /* CONFIG_NX_LCDDRIVER */
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