From 87161b5b7bf0fca45274bb89647d0aca22013769 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <yobibe@gmail.com>
Date: Sat, 2 Oct 2010 23:35:24 +0000
Subject: [PATCH] Examples: pn53x-tamashell TODO: readline detection via
 autoconf

---
 examples/Makefile.am       |  10 ++-
 examples/pn53x-tamashell.c | 130 +++++++++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+), 1 deletion(-)
 create mode 100644 examples/pn53x-tamashell.c

diff --git a/examples/Makefile.am b/examples/Makefile.am
index 8b22ad1..35c4e5a 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -10,7 +10,8 @@ bin_PROGRAMS = \
 		nfc-sam \
 		nfcip-initiator \
 		nfcip-target \
-		pn53x-diagnose
+		pn53x-diagnose \
+		pn53x-tamashell
 
 # set the include path found by configure
 INCLUDES= $(all_includes) $(LIBNFC_CFLAGS)
@@ -62,6 +63,13 @@ pn53x_diagnose_SOURCES = pn53x-diagnose.c
 pn53x_diagnose_LDADD = $(top_builddir)/libnfc/libnfc.la \
 		    libnfcutils.la
 
+pn53x_tamashell_SOURCES = pn53x-tamashell.c
+pn53x_tamashell_LDADD = $(top_builddir)/libnfc/libnfc.la \
+		    libnfcutils.la
+# Should be guarded by test on availability of readline
+#pn53x_tamashell_CFLAGS = -DHAVE_READLINE
+#pn53x_tamashell_LDFLAGS = -lreadline
+
 nfc_sam_SOURCES = nfc-sam.c
 nfc_sam_LDADD = $(top_builddir)/libnfc/libnfc.la \
 		 libnfcutils.la
diff --git a/examples/pn53x-tamashell.c b/examples/pn53x-tamashell.c
new file mode 100644
index 0000000..4c91dd2
--- /dev/null
+++ b/examples/pn53x-tamashell.c
@@ -0,0 +1,130 @@
+/*
+ 
+Public platform independent Near Field Communication (NFC) library
+Copyright (C) 2010, Yobibe
+ 
+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 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#if defined(HAVE_READLINE)
+#  include <readline/readline.h>
+#  include <readline/history.h>
+#else
+   extern FILE* stdin;
+#endif //HAVE_READLINE
+#include <nfc/nfc.h>
+#include <nfc/nfc-messages.h>
+
+#include "nfc-utils.h"
+
+#define MAX_FRAME_LEN 264
+
+int main(int argc, const char* argv[])
+{
+  nfc_device_t* pnd;
+  byte_t abtRx[MAX_FRAME_LEN];
+  byte_t abtTx[MAX_FRAME_LEN] = { 0xD4 };
+  size_t szRxLen;
+  size_t szTxLen;
+
+  nfc_device_desc_t device_desc;
+  // Try to open the NFC reader
+  pnd = nfc_connect(NULL);
+
+  if (pnd == NULL) {
+    ERR ("%s", "Unable to connect to NFC device.");
+    return EXIT_FAILURE;
+  }
+
+  printf ("Connected to NFC reader: %s\n", pnd->acName);
+
+  nfc_initiator_init(pnd);
+
+  char * cmd;
+  char * prompt="> ";
+  while(1) {
+    bool result;
+    int offset=0;
+#if defined(HAVE_READLINE)
+    cmd=readline(prompt);
+    // NULL if ctrl-d
+    if (cmd==NULL) {
+      printf("Bye!\n");
+      break;
+    }
+    add_history(cmd);
+#else
+    cmd = malloc(1024);
+    printf("%s", prompt);
+    fflush(0);
+    int s = read(0, cmd, 1024);
+    if (s == 0) {
+      printf("Bye!\n");
+      free(cmd);
+      break;
+    }
+#endif //HAVE_READLINE
+    if (cmd[0]=='q') {
+      printf("Bye!\n");
+      free(cmd);
+      break;
+    }
+    szTxLen = 0;
+    for(int i = 0; i<MAX_FRAME_LEN-10; i++) {
+      int size;
+      byte_t byte;
+      while (isspace(cmd[offset])) {
+        offset++;
+      }
+      size = sscanf(cmd+offset, "%2x", &byte);
+      if (size<1) {
+        break;
+      }
+      abtTx[i+1] = byte;
+      szTxLen++;
+      if (cmd[offset+1] == 0) { // if last hex was only 1 symbol
+        break;
+      }
+      offset += 2;
+    }
+
+    if ((int)szTxLen < 1) {
+      free(cmd);
+      continue;
+    }
+    szTxLen++;
+    printf("Tx: ");
+    print_hex((byte_t*)abtTx+1,szTxLen-1);
+
+    // FIXME: Direct call
+    if (!pn53x_transceive (pnd, abtTx, szTxLen, abtRx, &szRxLen)) {
+      free(cmd);
+      nfc_perror (pnd, "Rx");
+      continue;
+    }
+
+    printf("Rx: ");
+    print_hex(abtRx, szRxLen);
+    free(cmd);
+  }
+
+  nfc_disconnect(pnd);
+  return 1;
+}