111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/**
|
|
* Copyright (c) 2015 - 2020, Nordic Semiconductor ASA
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form, except as embedded into a Nordic
|
|
* Semiconductor ASA integrated circuit in a product or a software update for
|
|
* such product, must reproduce the above copyright notice, this list of
|
|
* conditions and the following disclaimer in the documentation and/or other
|
|
* materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* 4. This software, with or without modification, must only be used with a
|
|
* Nordic Semiconductor ASA integrated circuit.
|
|
*
|
|
* 5. Any software provided in binary form under this license must not be reverse
|
|
* engineered, decompiled, modified and/or disassembled.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
|
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
|
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
#include "nrf_drv_spi.h"
|
|
#include "app_util_platform.h"
|
|
#include "nrf_gpio.h"
|
|
#include "nrf_delay.h"
|
|
#include "boards.h"
|
|
#include "app_error.h"
|
|
#include <string.h>
|
|
#include "nrf_log.h"
|
|
#include "nrf_log_ctrl.h"
|
|
#include "nrf_log_default_backends.h"
|
|
|
|
#define SPI_INSTANCE 0 /**< SPI instance index. */
|
|
static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE); /**< SPI instance. */
|
|
static volatile bool spi_xfer_done; /**< Flag used to indicate that SPI instance completed the transfer. */
|
|
|
|
#define TEST_STRING "Nordic"
|
|
static uint8_t m_tx_buf[] = TEST_STRING; /**< TX buffer. */
|
|
static uint8_t m_rx_buf[sizeof(TEST_STRING) + 1]; /**< RX buffer. */
|
|
static const uint8_t m_length = sizeof(m_tx_buf); /**< Transfer length. */
|
|
|
|
/**
|
|
* @brief SPI user event handler.
|
|
* @param event
|
|
*/
|
|
void spi_event_handler(nrf_drv_spi_evt_t const * p_event,
|
|
void * p_context)
|
|
{
|
|
spi_xfer_done = true;
|
|
NRF_LOG_INFO("Transfer completed.");
|
|
if (m_rx_buf[0] != 0)
|
|
{
|
|
NRF_LOG_INFO(" Received:");
|
|
NRF_LOG_HEXDUMP_INFO(m_rx_buf, strlen((const char *)m_rx_buf));
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
bsp_board_init(BSP_INIT_LEDS);
|
|
|
|
APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
|
|
NRF_LOG_DEFAULT_BACKENDS_INIT();
|
|
|
|
nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;
|
|
spi_config.ss_pin = SPI_SS_PIN;
|
|
spi_config.miso_pin = SPI_MISO_PIN;
|
|
spi_config.mosi_pin = SPI_MOSI_PIN;
|
|
spi_config.sck_pin = SPI_SCK_PIN;
|
|
APP_ERROR_CHECK(nrf_drv_spi_init(&spi, &spi_config, spi_event_handler, NULL));
|
|
|
|
NRF_LOG_INFO("SPI example started.");
|
|
|
|
while (1)
|
|
{
|
|
// Reset rx buffer and transfer done flag
|
|
memset(m_rx_buf, 0, m_length);
|
|
spi_xfer_done = false;
|
|
|
|
APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));
|
|
|
|
while (!spi_xfer_done)
|
|
{
|
|
__WFE();
|
|
}
|
|
|
|
NRF_LOG_FLUSH();
|
|
|
|
bsp_board_led_invert(BSP_BOARD_LED_0);
|
|
nrf_delay_ms(200);
|
|
}
|
|
}
|