#include <cstring>
#include <errno.h>
#include <fcntl.h>
#include <iostream>
#include <linux/serial.h>
#include <stdio.h>
#include <unistd.h>

/* Include definition for RS485 ioctls: TIOCGRS485 and TIOCSRS485 */
#include <sys/ioctl.h>

int main()
{
	uint8_t send_buffer[14] = {0x7E, 0x01, 0x02, 8,	   0x01, 0x02, 0x03,
							   0x7D, 0x5E, 0x05, 0x06, 0x07, 0x08, 0xFF};

	/* Open your specific device (e.g., /dev/mydevice): */
	int fd = open("/dev/ttyAMA1", O_RDWR);
	if (fd < 0)
	{
		/* Error handling. See errno. */
		fprintf(stderr, "Failed... error:%s", strerror(errno));
	}

	struct serial_rs485 rs485conf;

	/* Enable RS485 mode: */
	rs485conf.flags |= SER_RS485_ENABLED;

	/* Set logical level for RTS pin equal to 1 when sending: */
	rs485conf.flags |= SER_RS485_RTS_ON_SEND;
	/* or, set logical level for RTS pin equal to 0 when sending: */
	rs485conf.flags &= ~(SER_RS485_RTS_ON_SEND);

	/* Set logical level for RTS pin equal to 1 after sending: */
	rs485conf.flags |= SER_RS485_RTS_AFTER_SEND;
	/* or, set logical level for RTS pin equal to 0 after sending: */
	rs485conf.flags &= ~(SER_RS485_RTS_AFTER_SEND);

	// /* Set rts delay before send, if needed: */
	// rs485conf.delay_rts_before_send = ...;

	// /* Set rts delay after send, if needed: */
	// rs485conf.delay_rts_after_send = ...;

	/* Set this flag if you want to receive data even while sending data */
	// rs485conf.flags |= SER_RS485_RX_DURING_TX;

	if (ioctl(fd, TIOCSRS485, &rs485conf) < 0)
	{
		/* Error handling. See errno. */
	}

	/* Use read() and write() syscalls here... */
	ssize_t rc = 0;
	write(fd, send_buffer, 14);

	/* Close the device when finished: */
	if (close(fd) < 0)
	{
		/* Error handling. See errno. */
	}
}