762ae456b3
Gregory Nutt is has submitted the SGA Michal Lyszczek has submitted the ICLA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/****************************************************************************
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* boards/arm/stm32/stm32butterfly2/src/stm32_spi.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 <inttypes.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include "stm32_butterfly2.h"
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#include "stm32_gpio.h"
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#include "stm32_spi.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_spidev_initialize
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*
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* Description:
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* Called to configure SPI chip select GPIO pins.
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*
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* Note:
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* Here only CS pins are configured as SPI pins are configured by driver
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* itself.
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****************************************************************************/
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void stm32_spidev_initialize(void)
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{
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spiinfo("INFO: Initializing spi gpio pins\n");
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stm32_configgpio(GPIO_SD_CS);
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stm32_configgpio(GPIO_SD_CD);
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}
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/****************************************************************************
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* Name: stm32_spi1select
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*
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* Description:
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* Function asserts given devid based on select
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****************************************************************************/
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void stm32_spi1select(struct spi_dev_s *dev, uint32_t devid,
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bool select)
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{
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spiinfo("INFO: Selecting spi dev: %" PRId32 ", state: %d\n",
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devid, select);
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if (devid == SPIDEV_MMCSD(0))
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{
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stm32_gpiowrite(GPIO_SD_CS, !select);
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}
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}
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/****************************************************************************
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* Name: stm32_spi1status
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*
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* Description:
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* Return status of devid
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****************************************************************************/
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uint8_t stm32_spi1status(struct spi_dev_s *dev, uint32_t devid)
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{
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spiinfo("INFO: Requesting info from spi dev: %" PRId32 "\n", devid);
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if (devid == SPIDEV_MMCSD(0))
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{
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if (stm32_gpioread(GPIO_SD_CD) == 0)
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{
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return SPI_STATUS_PRESENT;
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}
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}
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return 0;
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}
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