Other Parts Discussed in Thread: UNIFLASH
Hi all,
I flashed the 68xx_mmwave_sdk_hcc demo from the mmwave industrial toolbox (ver 4.7) on my IWR6843AOPEVM board and I am trying to read from the data port using a simple C program, but so far failing to find the magic word of the message header. I believe I'm using wrong UART settings on my Linux machine (Ubuntu 20.04), but can't seem to find the exact UART settings one needs to successfully read from the data port of the IWR6843AOPEVM.
Here is my C Code to initialize the UART connection to the IWR6843AOPEVM:
#define IWR6843AOPEVM_DEF_BAUD B921600
int uart_init(int fd)
{
int rv = 0;
speed_t baudrate = IWR6843AOPEVM_DEF_BAUD;
struct termios2 settings;
if (ioctl(fd, TCGETS2, &settings))
{
printf("Error loading UART settings from device\n");
rv = 1;
goto err;
}
settings.c_cflag &= (unsigned int)~PARENB; // no parity bit
settings.c_cflag &= (unsigned int)~CSTOPB; // one stop bit
settings.c_cflag &= (unsigned int)~CSIZE; // character size mask
settings.c_cflag |= CS8; // data word = 8 bits
settings.c_cflag |= CLOCAL; // ignore modem control lines
settings.c_cflag &= ~CRTSCTS; // disable hardware flow control
settings.c_lflag &= ~ICANON; // non-canonical mode
settings.c_lflag &= ~ISIG; // ignore signals INTR, QUIT, SUSP, DSUSP
settings.c_lflag &= ~ECHO; // echo off
settings.c_iflag &= (unsigned int)~(ICRNL | IXON | IXOFF); // cr not interpreted, no software flow control
settings.c_oflag &= ~OPOST; // raw output
settings.c_oflag &= ~ONLCR; // map cr to cr-nl
settings.c_ispeed = baudrate;
settings.c_ospeed = baudrate;
if (ioctl(fd, TCSETS2, &settings))
{
printf("Error storing UART settings to device\n");
rv = 1;
goto err;
}
err:
return rv;
}
Any suggestions on what I might be doing wrong or missing?
