284 lines
7.9 KiB
C
284 lines
7.9 KiB
C
/****************************************************************************
|
|
* boards/arm/stm32/stm32f103-minimum/src/stm32_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 "arm_internal.h"
|
|
#include "chip.h"
|
|
#include "stm32.h"
|
|
#include "stm32f103_minimum.h"
|
|
|
|
#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2)
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_spidev_initialize
|
|
*
|
|
* Description:
|
|
* Called to configure SPI chip select GPIO pins for the HY-MiniSTM32
|
|
* board.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void stm32_spidev_initialize(void)
|
|
{
|
|
/* NOTE: Clocking for SPI1 and/or SPI2 was already provided in stm32_rcc.c.
|
|
* Configurations of SPI pins is performed in stm32_spi.c.
|
|
* Here, we only initialize chip select pins unique to the board
|
|
* architecture.
|
|
*/
|
|
|
|
#ifdef CONFIG_MTD_W25
|
|
stm32_configgpio(FLASH_SPI1_CS); /* FLASH chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_CAN_MCP2515
|
|
stm32_configgpio(GPIO_MCP2515_CS); /* MCP2515 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_CL_MFRC522
|
|
stm32_configgpio(GPIO_CS_MFRC522); /* MFRC522 chip select */
|
|
#endif
|
|
|
|
#if defined(CONFIG_SENSORS_MAX6675)
|
|
stm32_configgpio(GPIO_MAX6675_CS); /* MAX6675 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_MAX7219
|
|
stm32_configgpio(STM32_LCD_CS); /* MAX7219 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_ST7567
|
|
stm32_configgpio(STM32_LCD_CS); /* ST7567 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_PCD8544
|
|
stm32_configgpio(STM32_LCD_CS); /* ST7567 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_WL_NRF24L01
|
|
stm32_configgpio(GPIO_NRF24L01_CS); /* nRF24L01 chip select */
|
|
#endif
|
|
|
|
#ifdef CONFIG_MMCSD_SPI
|
|
stm32_configgpio(GPIO_SDCARD_CS); /* SD/MMC Card chip select */
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_spi1/2select and stm32_spi1/2status
|
|
*
|
|
* 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_STM32_SPI1
|
|
void stm32_spi1select(struct spi_dev_s *dev, uint32_t devid,
|
|
bool selected)
|
|
{
|
|
#if defined(CONFIG_CAN_MCP2515)
|
|
if (devid == SPIDEV_CANBUS(0))
|
|
{
|
|
stm32_gpiowrite(GPIO_MCP2515_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_CL_MFRC522)
|
|
if (devid == SPIDEV_CONTACTLESS(0))
|
|
{
|
|
stm32_gpiowrite(GPIO_CS_MFRC522, !selected);
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_SENSORS_MAX6675)
|
|
if (devid == SPIDEV_TEMPERATURE(0))
|
|
{
|
|
stm32_gpiowrite(GPIO_MAX6675_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_MAX7219
|
|
if (devid == SPIDEV_DISPLAY(0))
|
|
{
|
|
stm32_gpiowrite(STM32_LCD_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_PCD8544
|
|
if (devid == SPIDEV_DISPLAY(0))
|
|
{
|
|
stm32_gpiowrite(STM32_LCD_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_ST7567
|
|
if (devid == SPIDEV_DISPLAY(0))
|
|
{
|
|
stm32_gpiowrite(STM32_LCD_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_WL_NRF24L01
|
|
if (devid == SPIDEV_WIRELESS(0))
|
|
{
|
|
stm32_gpiowrite(GPIO_NRF24L01_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_MMCSD_SPI
|
|
if (devid == SPIDEV_MMCSD(0))
|
|
{
|
|
stm32_gpiowrite(GPIO_SDCARD_CS, !selected);
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_MTD_W25
|
|
stm32_gpiowrite(FLASH_SPI1_CS, !selected);
|
|
#endif
|
|
}
|
|
|
|
uint8_t stm32_spi1status(struct spi_dev_s *dev, uint32_t devid)
|
|
{
|
|
uint8_t status = 0;
|
|
|
|
#ifdef CONFIG_WL_NRF24L01
|
|
if (devid == SPIDEV_WIRELESS(0))
|
|
{
|
|
status |= SPI_STATUS_PRESENT;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_MMCSD_SPI
|
|
if (devid == SPIDEV_MMCSD(0))
|
|
{
|
|
status |= SPI_STATUS_PRESENT;
|
|
}
|
|
#endif
|
|
|
|
return status;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_STM32_SPI2
|
|
void stm32_spi2select(struct spi_dev_s *dev, uint32_t devid,
|
|
bool selected)
|
|
{
|
|
}
|
|
|
|
uint8_t stm32_spi2status(struct spi_dev_s *dev, uint32_t devid)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_spi1cmddata
|
|
*
|
|
* Description:
|
|
* Set or clear the SH1101A A0 or SD1306 D/C n bit to select data (true)
|
|
* or command (false). This function must be provided by platform-specific
|
|
* logic. 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_STM32_SPI1
|
|
int stm32_spi1cmddata(struct spi_dev_s *dev, uint32_t devid,
|
|
bool cmd)
|
|
{
|
|
#ifdef CONFIG_LCD_ST7567
|
|
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(STM32_LCD_RS, !cmd);
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_LCD_PCD8544
|
|
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(STM32_LCD_CD, !cmd);
|
|
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* CONFIG_STM32_SPI1 || CONFIG_STM32_SPI2 */
|