156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
/****************************************************************************
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* boards/arm/stm32/common/src/stm32_nrf24l01.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Laurent Latil <laurent@latil.nom.fr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <stdint.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 <stdio.h>
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#include <string.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/wireless/nrf24l01.h>
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#include <arch/board/board.h>
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#include "arm_arch.h"
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#include "chip.h"
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#include "stm32.h"
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#include "stm32_nrf24l01.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int nrf24l01_irq_attach(xcpt_t isr, FAR void *arg);
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static void nrf24l01_chip_enable(bool enable);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static FAR struct nrf24l01_config_s nrf_cfg =
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{
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.irqattach = nrf24l01_irq_attach,
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.chipenable = nrf24l01_chip_enable,
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};
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static xcpt_t g_isr;
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static FAR void *g_arg;
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int nrf24l01_irq_attach(xcpt_t isr, FAR void *arg)
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{
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wlinfo("Attach IRQ\n");
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g_isr = isr;
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g_arg = arg;
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stm32_gpiosetevent(BOARD_NRF24L01_GPIO_IRQ, false, true, false,
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g_isr, g_arg);
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return OK;
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}
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static void nrf24l01_chip_enable(bool enable)
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{
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wlinfo("CE:%d\n", enable);
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stm32_gpiowrite(BOARD_NRF24L01_GPIO_CE, enable);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_nrf24l01_initialize
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*
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* Description:
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* Initialize the NRF24L01 wireless module
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*
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* Input Parameters:
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* busno - The SPI bus number
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int board_nrf24l01_initialize(int busno)
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{
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FAR struct spi_dev_s *spidev;
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int result;
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/* Setup CE & IRQ line IOs */
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stm32_configgpio(BOARD_NRF24L01_GPIO_CE);
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stm32_configgpio(BOARD_NRF24L01_GPIO_IRQ);
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/* Init SPI bus */
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spidev = stm32_spibus_initialize(busno);
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if (!spidev)
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{
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wlerr("ERROR: Failed to initialize SPI bus\n");
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return -ENODEV;
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}
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result = nrf24l01_register(spidev, &nrf_cfg);
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if (result != OK)
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{
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wlerr("ERROR: Failed to register initialize SPI bus\n");
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return -ENODEV;
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}
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return OK;
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}
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