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[fpgaboy.git] / binwire.c

diff --git a/binwire.c b/binwire.c
index 9322ef1b710eb9484bb477938b13d3f7c0c6ef38..cef0924294a27630901af44fcb23142dc829f843 100644 (file)
--- a/binwire.c
+++ b/binwire.c
@@ -1,28 +1,120 @@
 #include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <poll.h>
 
 void dowrite(char *s, int len)
+{
+  int i = 0;
+  while (i < len)
+  {
+    int cs = ((len-i) > 1) ? 1 : (len-i);
+    
+    write(1, s+i, cs);
+    i += cs;
+  }
+}
+
+int waitchar(int timeout)
+{
+  struct pollfd pfd;
+  
+  pfd.fd = 0;
+  pfd.events = POLLIN;
+  return poll(&pfd, 1, timeout) == 1;
+}
+
+int expect(char *s, int len)
 {
   int i;
-  for (i=0; i<len; i++)
+  char c;
+  for (i=0; i < len; i++)
   {
-    write(1, s+i, 1);
+    if (waitchar(1000) == 0)
+    {
+      fprintf(stderr, "Timeout reached in expect (expected %c)\n", s[i]);
+      return 1;
+    }
+    while (read(0, &c, 1) == 0)
+      fprintf(stderr, "Short read...\n");
+    if (c != s[i])
+    {
+      fprintf(stderr, "Expect failed: expected %d, got %d (pos %d)\n", s[i], c, i);
+      return 1;
+    }
   }
+  return 0;
 }
 
-void main()
+void expect_no_chars()
 {
-  char buf[259];
+  int cs = 0;
+  
+  while (waitchar(100) == 1)
+  {
+    char c;
+    if (read(0, &c, 1) == 0)
+      fprintf(stderr, "enc Short read...\n");
+    cs++;
+    fprintf(stderr, "Warning: expected no chars, got %d\n", c);
+  }
+  if (cs)
+    fprintf(stderr, "Expect no chars failed: got %d chars\n", cs);
+}
+
+void main(int argc, char **argv)
+{
+  unsigned char buf[259];
   int sz;
-  dowrite("\x1B" "A\x00\x00\x00...", 8);
+  int rfd;
+  int tc = 0;
+  
+  if (argc < 2)
+  {
+    fprintf(stderr, "Usage: %s [filename]\n", argv[0]);
+    exit(1);
+  }
+  rfd = open(argv[1], O_RDONLY);
+  if (rfd < 0)
+  {
+    perror("open");
+    exit(1);
+  }
+  
+  dowrite("\x1B" "A\x00\x00\x00", 5);
   fprintf(stderr, "Address sent\n");
-  while ((sz = read(0, buf+3, 128)) > 0)
+  expect("A", 1);
+  expect_no_chars();
+  while ((sz = read(rfd, buf+3, 255)) > 0)
   {
+    int rv;
+    char abuf[5];
     buf[0] = 0x1B;
     buf[1] = 'D';
-    buf[2] = sz - 1;
+    buf[2] = sz+1;
+    abuf[0] = 0x1B;
+    abuf[1] = 'A';
+    abuf[2] = (tc >> 16) & 0xFF;
+    abuf[3] = (tc >> 8) & 0xFF;
+    abuf[4] = tc & 0xFF;
+    tc += sz;
+    retry:
+    dowrite(abuf, 5);
+    rv = expect("A", 1);
     dowrite(buf, sz + 3);
-    dowrite(".", 1);
-    fprintf(stderr, "Data sent\n");
-    usleep(100000);
+    fprintf(stderr, "Data sent (%d)\n", tc);
+    rv |= expect("D", 1);
+    expect_no_chars();
+    if (rv)
+    {
+      printf("Failure to ack... retrying\n");
+      dowrite("...", 3);
+      rv = expect("...", 3);
+      expect_no_chars();
+      goto retry;
+    }
   }
+  exit(0);
 }
\ No newline at end of file