Initial check-in for STM32 board

BootLoaders/Boards/stm32/tools/linux/src/upload-reset/upload-reset.c

@@ -0,0 +1,161 @@
+/* Copyright (C) 2015 Roger Clark <www.rogerclark.net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ *
+ * Utility to send the reset sequence on RTS and DTR and chars
+ * which resets the libmaple and causes the bootloader to be run
+ *
+ *
+ *
+ * Terminal control code by Heiko Noordhof (see copyright below)
+ */
+
+
+
+/* Copyright (C) 2003 Heiko Noordhof <heikyAusers.sf.net>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>  
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <stdbool.h>
+
+/* Function prototypes (belong in a seperate header file) */
+int   openserial(char *devicename);
+void  closeserial(void);
+int   setDTR(unsigned short level);
+int   setRTS(unsigned short level); 
+
+
+/* Two globals for use by this module only */
+static int fd;
+static struct termios oldterminfo;
+
+
+void closeserial(void)
+{
+     tcsetattr(fd, TCSANOW, &oldterminfo);
+     close(fd);
+}
+
+
+int openserial(char *devicename) 
+{
+     struct termios attr;
+
+     if ((fd = open(devicename, O_RDWR)) == -1) return 0; /* Error */ 
+     atexit(closeserial);
+
+     if (tcgetattr(fd, &oldterminfo) == -1) return 0; /* Error */
+     attr = oldterminfo;
+     attr.c_cflag |= CRTSCTS | CLOCAL;
+     attr.c_oflag = 0;
+     if (tcflush(fd, TCIOFLUSH) == -1) return 0; /* Error */
+     if (tcsetattr(fd, TCSANOW, &attr) == -1) return 0; /* Error */ 
+
+     /* Set the lines to a known state, and */
+     /* finally return non-zero is successful. */
+     return setRTS(0) && setDTR(0);
+}
+
+
+/* For the two functions below:
+ *     level=0 to set line to LOW
+ *     level=1 to set line to HIGH
+ */
+
+int setRTS(unsigned short level)
+{
+     int status;
+
+     if (ioctl(fd, TIOCMGET, &status) == -1) {
+	  perror("setRTS(): TIOCMGET");
+	  return 0;
+     }
+     if (level) status |= TIOCM_RTS;
+     else status &= ~TIOCM_RTS;
+     if (ioctl(fd, TIOCMSET, &status) == -1) {
+	  perror("setRTS(): TIOCMSET");
+	  return 0;
+     }
+     return 1;
+}
+
+
+int setDTR(unsigned short level)
+{
+     int status;
+
+     if (ioctl(fd, TIOCMGET, &status) == -1) {
+	  perror("setDTR(): TIOCMGET");
+	  return 0;
+     }
+     if (level) status |= TIOCM_DTR;
+     else status &= ~TIOCM_DTR;
+     if (ioctl(fd, TIOCMSET, &status) == -1) {
+	  perror("setDTR: TIOCMSET");
+	  return 0;
+     }
+     return 1;
+}
+
+/* This portion of code was written by Roger Clark
+ * It was informed by various other pieces of code written by Leaflabs to reset their 
+ * Maple and Maple mini boards 
+ */
+
+main(int argc, char *argv[])
+{
+ 	
+	if (argc<2 || argc >3)
+	{
+		printf("Usage upload-reset <serial_device> <Optional_delay_in_milliseconds>\n\r");
+		return;
+	}
+
+ 	if (openserial(argv[1]))
+	{
+		// Send magic sequence of DTR and RTS followed by the magic word "1EAF"
+		setRTS(false);
+ 		setDTR(false);
+ 		setDTR(true);
+
+		usleep(50000L);
+
+		setDTR(false);
+		setRTS(true);
+		setDTR(true);
+
+		usleep(50000L);
+
+		setDTR(false);
+
+		usleep(50000L);
+
+		write(fd,"1EAF",4);
+ 		
+		closeserial();
+		if (argc==3)
+		{
+			usleep(atol(argv[2])*1000L);
+		}
+	}
+	else
+	{
+		printf("Failed to open serial device.\n\r");
+	}
+}