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Add activation of SPI0 on arduino due

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This commit is contained in:
Theo 2023-09-22 15:34:30 +02:00 committed by Xiang Xiao
parent b53af5602d
commit 52096aeb80
4 changed files with 74 additions and 0 deletions
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5
boards/arm/sam34/arduino-due/include/board.h
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@ -131,6 +131,11 @@
#define BOARD_FWS 4
/* Serial Peripheral Interface (SPI) */
#define GPIO_SPI0_SPCK GPIO_SPI0_SPCK_1
#define GPIO_SPI0_CS (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_SET | GPIO_PORT_PIOC | GPIO_PIN21)
/* LED definitions **********************************************************/
/* There are three user-controllable LEDs on board the Arduino Due board:

4
boards/arm/sam34/arduino-due/src/Makefile
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@ -49,4 +49,8 @@ ifeq ($(CONFIG_BOARDCTL),y)
CSRCS += sam_appinit.c
endif
ifeq ($(CONFIG_SAM34_SPI0),y)
CSRCS += sam_spidev.c
endif
include $(TOPDIR)/boards/Board.mk

19
boards/arm/sam34/arduino-due/src/sam_bringup.c
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@ -30,10 +30,12 @@
#include <nuttx/board.h>
#include <nuttx/fs/fs.h>
#include <nuttx/leds/userled.h>
#include <nuttx/spi/spi_transfer.h>
#include "arduino-due.h"
#include <arch/board/board.h>
#include "sam_spi.h"
/****************************************************************************
* Pre-processor Definitions
@ -138,6 +140,23 @@ int sam_bringup(void)
}
#endif
#ifdef CONFIG_SAM34_SPI0
sam_configgpio(GPIO_SPI0_CS);
struct spi_dev_s *spi;
spi = sam_spibus_initialize(0);
if (!spi)
{
syslog(LOG_ERR, "ERROR: Failed to initialize SPI port 0\n");
return -1;
}
else
{
spi_register(spi, 0);
}
#endif
UNUSED(ret);
return OK;
}

46
boards/arm/sam34/arduino-due/src/sam_spidev.c Normal file
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@ -0,0 +1,46 @@
/****************************************************************************
* boards/arm/sam34/arduino-due/src/sam_spidev.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 <debug.h>
#include <arch/board/board.h>
#include "sam_spi.h"
#include "hardware/sam3x_pinmap.h"
/****************************************************************************
* Public Functions
****************************************************************************/
void sam_spi0select(uint32_t devid, bool selected)
{
spiinfo("devid: %08x CS: %s\n",
(unsigned int)devid, selected ? "assert" : "de-assert");
sam_gpiowrite(GPIO_SPI0_CS, !selected);
}
uint8_t sam_spi0status(struct spi_dev_s *dev, uint32_t devid)
{
spiinfo("Returning nothing\n");
return 0;
}