From a7e50d2f674c2bbaa00426019708662637cd3179 Mon Sep 17 00:00:00 2001
From: Ludwig Maier <lmaier@brett.e12.ph.tum.de>
Date: Mon, 9 Dec 2013 14:21:30 +0100
Subject: [PATCH] trb_i2c -b option added

---
 HOWTO_COMPILE.TXT       | 28 ----------------------------
 trbnetd/server/Makefile |  2 +-
 trbrich/trb_i2c.c       | 27 +++++++++++++++++++++------
 3 files changed, 22 insertions(+), 35 deletions(-)
 delete mode 100644 HOWTO_COMPILE.TXT

diff --git a/HOWTO_COMPILE.TXT b/HOWTO_COMPILE.TXT
deleted file mode 100644
index cbfd879..0000000
--- a/HOWTO_COMPILE.TXT
+++ /dev/null
@@ -1,28 +0,0 @@
-compile for old Etrax-Board
- make distclean
- make ETRAX=1
- make ETRAX=1 install
-
-compile for Pexor Card
- make distclean
- make PEXOR=1
- make PEXOR=1 install
-
-compile for new TRB3
- make distclean
- make TRB3=1
- make TRB3=1 install
-
-In case ypu are not root you have to install the libtrbnet_perl libs manually by calling 
-
-sudo make -C libtrbnet_perl PEXOR=1 install    or
-sudo make -C libtrbnet_perl TRB3=1 install
-
-
-Recommendation to have the most essential commands available:
-
-cd ~/bin
-ln -s $HOME/trbsoft/trbnettools/trbnetd/trbdhcp 
-ln -s $HOME/trbsoft/trbnettools/trbnetd/trbflash
-ln -s $HOME/trbsoft/trbnettools/trbnetd/trbcmd
-ln -s $HOME/trbsoft/trbnettools/trbnetd/server/trbnetd
diff --git a/trbnetd/server/Makefile b/trbnetd/server/Makefile
index c747f11..a67084a 100644
--- a/trbnetd/server/Makefile
+++ b/trbnetd/server/Makefile
@@ -103,7 +103,7 @@ depend:
 
 install: $(TARGETS)
 	mkdir -p $(DESTDIR)/bin
-	install -m 775 $(TARGETS) $(DESTDIR)/binlocal/
+	install -m 775 $(TARGETS) $(DESTDIR)/bin/
 
 # ------------ Dependencies --------------------------------------------
 
diff --git a/trbrich/trb_i2c.c b/trbrich/trb_i2c.c
index f358bc0..c2b0acf 100644
--- a/trbrich/trb_i2c.c
+++ b/trbrich/trb_i2c.c
@@ -24,10 +24,12 @@ static const unsigned int timeout = 1000;
 
 void usage(const char *progName)
 {
-  printf("Usage: %s [-h] [-d] [-d level] [-V] <COMMAND>\n", progName);
+  printf("Usage: %s [-h] [-d] [-b numBytes] [-d level] [-V] <COMMAND>\n", 
+         progName);
   printf("Options:\n");
   printf("  -h    give this help\n");
   printf("  -s    SPI Mode\n");
+  printf("  -b    number of bytes to be read 1..4\n");
   printf("  -d    turn on Debugging Information\n");
   printf("  -V    Version number\n");
   printf("\nCommands:\n");
@@ -133,10 +135,11 @@ int main(int argc, char** argv)
 {
   int i;
   int spi_mode = 0;
+  unsigned int num_bytes = 0;
   trb_debug = 0;
   
   /* Parse Arguments */
-  while ((i = getopt(argc, argv, "+hsd:V")) != -1) {
+  while ((i = getopt(argc, argv, "+hsb:d:V")) != -1) {
     switch (i) {
     case '?':
       usage(basename(argv[0]));
@@ -148,6 +151,13 @@ int main(int argc, char** argv)
       spi_mode = 1;
       trb_i2c_register = 0x8060;
       break;
+    case 'b':
+      num_bytes = strtoul(optarg, NULL, 0);
+      if (num_bytes > 4) {
+        usage(basename(argv[0]));
+        exit(EXIT_FAILURE);
+      }
+      break;
     case 'd':
       trb_debug = strtoul(optarg, NULL, 0);
       break;
@@ -268,10 +278,15 @@ int main(int argc, char** argv)
     }
 
     /* Read Value */
-    value = spi_mode == 0 
-      ? 0xff000000 | (i2c_chip << 16) | (i2c_register << 8)
-      : 0xff000000 | (i2c_register << 8);
-      
+    if (spi_mode == 0) {
+      value = num_bytes == 0 
+        ? (0xff000000 | (i2c_chip << 16) | (i2c_register << 8)) 
+        : (0xc0000000 | (num_bytes << 24) | 
+           (i2c_chip << 16) | (i2c_register << 8));
+    } else {
+      value = (0xff000000 | (i2c_register << 8));
+    }
+
     if (trb_register_write(trb_address, trb_i2c_register, value) == -1) {
       trb_error("Error reading value");
       clearI2C(trb_address);
-- 
2.43.0