Add a simple program to control the pipeline by using the iCEstick UART

22b98a70 · Javier D. Garcia-Lasheras · f298b2b7 · 22b98a70 · 22b98a70
Commit 22b98a70 authored Aug 24, 2019 by Javier D. Garcia-Lasheras
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Makefile demo/software/Makefile +21 -0

micropipeline-control.c demo/software/micropipeline-control.c +77 -0

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--- a/demo/software/Makefile
+++ b/demo/software/Makefile
+IDIR =./
+CFLAGS=-Wall -I$(IDIR)
+LDFLAGS=
+LIBS=
+SOURCES=micropipeline-control.c
+OBJECTS=$(SOURCES:.c=.o)
+EXECUTABLE=micropipeline-control
+
+all: $(SOURCES) $(EXECUTABLE)
+    
+$(EXECUTABLE): $(OBJECTS) 
+	$(CC) $(LDFLAGS) $(OBJECTS) -o $@ $(CFLAGS) $(LIBS)
+
+.c.o:
+	$(CC) -c $(CFLAGS) $< -o $@
+
+clean:
+	rm -f $(EXECUTABLE) *.o
+
+.PHONY: clean
+
--- a/demo/software/micropipeline-control.c
+++ b/demo/software/micropipeline-control.c
+#include <errno.h>
+#include <fcntl.h> 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+int configure_uart(int fd, int baudrate)
+{
+    struct termios tty;
+
+    if (tcgetattr(fd, &tty) < 0) {
+        printf("Error from tcgetattr: %s\n", strerror(errno));
+        return -1;
+    }
+
+    cfsetospeed(&tty, (speed_t)baudrate);
+    cfsetispeed(&tty, (speed_t)baudrate);
+
+    tty.c_cflag |= (CLOCAL | CREAD);
+    tty.c_cflag &= ~CSIZE;
+    tty.c_cflag |= CS8;
+    tty.c_cflag &= ~PARENB;
+    tty.c_cflag &= ~CSTOPB;
+    tty.c_cflag &= ~CRTSCTS;
+
+    tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
+    tty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
+    tty.c_oflag &= ~OPOST;
+
+    tty.c_cc[VMIN] = 1;
+    tty.c_cc[VTIME] = 1;
+
+    if (tcsetattr(fd, TCSANOW, &tty) != 0) {
+        printf("Error from tcsetattr: %s\n", strerror(errno));
+        return -1;
+    }
+    return 0;
+}
+
+
+int main(int argc, char **argv)
+{
+    int fd;
+    int wlen;
+    char value;
+
+    if(argc != 3) {
+        fprintf(stderr, "\nUsage:\t%s portname data\n"
+                "\tportname : serial port device\n"
+                "\tdata    : data to be written\n\n",
+                argv[0]);
+        exit(1);
+    }
+    char *portname = argv[1];
+    value = (char)strtoul(argv[2],0,0);
+
+
+    fd = open(portname, O_RDWR | O_NOCTTY | O_SYNC);
+    if (fd < 0) {
+        printf("Error opening %s: %s\n", portname, strerror(errno));
+        return -1;
+    }
+
+    configure_uart(fd, B115200);
+
+    char command_write[1] = {value};
+
+    wlen = write(fd, command_write, 1);
+    if (wlen != 1) {
+        printf("Error from write: %d, %d\n", wlen, errno);
+    }
+    tcdrain(fd);
+
+    return 0;
+}