From: ian <ian>
Date: Sun, 9 Jan 2005 22:58:52 +0000 (+0000)
Subject: command dumping and debugging mode
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=92556b9862c6b27b39071fd7abaf3227286b4eaa;p=trains.git

command dumping and debugging mode
---

diff --git a/hostside/hostside.h b/hostside/hostside.h
index db315d9..f3659bc 100644
--- a/hostside/hostside.h
+++ b/hostside/hostside.h
@@ -12,6 +12,8 @@ void xmit_nmra_raw(const Byte *with_csum, int length);
 void xmit_nmra(const Byte *without_csum, int length);
 void xmit_command(const Byte *command, int length);
 
+extern FILE *dump_stream;
+void dump(const char *what, const Byte *data, int length);
 void sysfatal(const char *m);
 void serial_open(const char *device);
 
diff --git a/hostside/main.c b/hostside/main.c
index 6407be8..92d26d7 100644
--- a/hostside/main.c
+++ b/hostside/main.c
@@ -15,6 +15,8 @@
 
 #include "hostside.h"
 
+FILE *dump_stream= 0;
+
 int main(int argc, const char **argv) {
   int l, i;
   char hbuf[3], *ep;
@@ -47,13 +49,19 @@ int main(int argc, const char **argv) {
   }
 
   for (;;) {
-    
-    switch (instruction[0]) {
+
+    if (*instruction == 'd') {
+      dump_stream= stdout;
+      instruction++;
+    }
+
+    switch (*instruction) {
     case 'c': xmit_command(buf,l);  break;
     case 'r': xmit_nmra_raw(buf,l); break;
     case 'n': xmit_nmra(buf,l);     break;
     default: abort();
     }
+    assert(!instruction[1]);
 
     if (repeat_delay < 0) break;
     if (iterations >= 0 && !iterations--) break;
diff --git a/hostside/nmra.c b/hostside/nmra.c
index e6697da..51bd88f 100644
--- a/hostside/nmra.c
+++ b/hostside/nmra.c
@@ -9,6 +9,8 @@ void xmit_nmra_raw(const Byte *nmra_packet, int length) {
   unsigned working, newbits;
   int working_qty;
 
+  dump("xmit_nmra_raw",nmra_packet,length);
+
   assert(length > 0);
   assert(length <= NMRA_PACKET_MAX);
   encp= encoded;
@@ -53,6 +55,8 @@ void xmit_nmra(const Byte *without_csum, int length) {
   int left;
   unsigned running;
 
+  dump("xmit_nmra",without_csum,length);
+
   assert(length >=0 && length < sizeof(with_csum));
   for (left=length, running=0, in=without_csum, out=with_csum;
        left>0;
diff --git a/hostside/serialio.c b/hostside/serialio.c
index 3a5a597..0f4c6aa 100644
--- a/hostside/serialio.c
+++ b/hostside/serialio.c
@@ -24,10 +24,22 @@ void serial_open(const char *device) {
   if (serial_fd<0) sysfatal(device);
 }
 
+void dump(const char *what, const Byte *data, int length) {
+  printf("%-25s %3d  ",what,length);
+  while (length>0) {
+    printf(" %02x", *data);
+    data++;
+    length--;
+  }
+  printf("\n");
+}
+
 void xmit_command(const Byte *command, int length) {
   int r;
   assert(length <= COMMAND_ENCODED_MAX);
 
+  dump("xmit_command",command,length);
+  
   while (length > 0) {
     r= write(serial_fd, command,
 	     serial_fudge_delay ? 1 : length);