152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/****************************************************************************
|
|
* boards/xtensa/esp32/common/src/esp32_board_spi.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 <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/spi/spi.h>
|
|
#include <arch/board/board.h>
|
|
|
|
#include "esp32_gpio.h"
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: spi_status
|
|
****************************************************************************/
|
|
|
|
static inline uint8_t spi_status(struct spi_dev_s *dev, uint32_t devid)
|
|
{
|
|
uint8_t status = 0;
|
|
|
|
#ifdef CONFIG_MMCSD_SPI
|
|
if (devid == SPIDEV_MMCSD(0))
|
|
{
|
|
status |= SPI_STATUS_PRESENT;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_LCD_ILI9341) || defined(CONFIG_LCD_SSD1680)
|
|
if (devid == SPIDEV_DISPLAY(0))
|
|
{
|
|
status |= SPI_STATUS_PRESENT;
|
|
}
|
|
#endif
|
|
|
|
return status;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: spi_cmddata
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_SPI_CMDDATA
|
|
|
|
static inline int spi_cmddata(struct spi_dev_s *dev, uint32_t devid,
|
|
bool cmd)
|
|
{
|
|
#if defined(CONFIG_LCD_ILI9341) || defined(CONFIG_LCD_SSD1680) || defined(CONFIG_LCD_ST7789)
|
|
if (devid == SPIDEV_DISPLAY(0))
|
|
{
|
|
/* This is the Data/Command control pad which determines whether the
|
|
* data bits are data or a command.
|
|
*/
|
|
|
|
esp32_gpiowrite(DISPLAY_DC, !cmd);
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: esp32_spi2_status
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ESP32_SPI2
|
|
|
|
uint8_t esp32_spi2_status(struct spi_dev_s *dev, uint32_t devid)
|
|
{
|
|
return spi_status(dev, devid);
|
|
}
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: esp32_spi2_cmddata
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_ESP32_SPI2) && defined(CONFIG_SPI_CMDDATA)
|
|
|
|
int esp32_spi2_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
|
|
{
|
|
spiinfo("devid: %" PRIu32 " CMD: %s\n", devid, cmd ? "command" :
|
|
"data");
|
|
|
|
return spi_cmddata(dev, devid, cmd);
|
|
}
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: esp32_spi3_status
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ESP32_SPI3
|
|
|
|
uint8_t esp32_spi3_status(struct spi_dev_s *dev, uint32_t devid)
|
|
{
|
|
return spi_status(dev, devid);
|
|
}
|
|
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: esp32_spi3_cmddata
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_ESP32_SPI3) && defined(CONFIG_SPI_CMDDATA)
|
|
|
|
int esp32_spi3_cmddata(struct spi_dev_s *dev, uint32_t devid, bool cmd)
|
|
{
|
|
spiinfo("devid: %" PRIu32 " CMD: %s\n", devid, cmd ? "command" :
|
|
"data");
|
|
|
|
return spi_cmddata(dev, devid, cmd);
|
|
}
|
|
|
|
#endif
|