75 lines
2.5 KiB
C
Executable File
75 lines
2.5 KiB
C
Executable File
/*****************************************************************************
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* | File : luckfox_spi_test.c
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* | Author : luckfox team
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* | Function : spi callback test
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2023-08-01
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* | Info : Basic version
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*
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h> //exit()
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#include <signal.h> //signal()
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#include "luckfox_spi.h"
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#define spidev0_path "/dev/spidev0.0"
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/* SPI send and receive buffer */
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static unsigned char tx_buffer[100] = "hello the world !";
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static unsigned char rx_buffer[100];
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static int fd; // File descriptor for SPI control pins
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static uint32_t mode = SPI_MODE_2; // Used to save SPI mode
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static uint8_t bits = 8; // Number of bits for receive and send data
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static uint32_t speed = 500000; // Transfer speed
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int main(int argc, char *argv[])
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{
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int ret;
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uint16_t delay = 10;
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fd = luckfox_spi_init(spidev0_path, mode, bits, speed);
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if (fd == -1)
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{
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printf("spi_init error\n");
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exit(-1);
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}
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ret = luckfox_spi_transfer(fd, tx_buffer, rx_buffer, sizeof(tx_buffer), delay);
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if (ret == -1)
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{
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printf("transfer error...\n");
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exit(-1);
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}
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/* Print tx_buffer and rx_buffer*/
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printf("tx_buffer: \n %s\n ", tx_buffer);
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printf("rx_buffer: \n %s\n ", rx_buffer);
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luckfox_spi_deinit(fd);
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return 0;
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}
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