From edb62bd1cbed91e01e0662752c5221e40d774dd6 Mon Sep 17 00:00:00 2001
From: Romuald Conty <romuald@libnfc.org>
Date: Fri, 23 Jul 2010 13:30:06 +0000
Subject: [PATCH] Create pn53x_InDeselect function.

---
 libnfc/chips/pn53x.c | 10 ++++++++++
 libnfc/chips/pn53x.h |  3 ++-
 libnfc/nfc.c         |  4 ++--
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/libnfc/chips/pn53x.c b/libnfc/chips/pn53x.c
index 691a94a..b7a46e7 100644
--- a/libnfc/chips/pn53x.c
+++ b/libnfc/chips/pn53x.c
@@ -300,3 +300,13 @@ pn53x_InListPassiveTarget(const nfc_device_t* pnd,
     return false;
   }
 }
+
+bool
+pn53x_InDeselect(const nfc_device_t* pnd, const uint8_t ui8Target)
+{
+  byte_t abtCmd[sizeof(pncmd_initiator_deselect)];
+  memcpy(abtCmd,pncmd_initiator_deselect,sizeof(pncmd_initiator_deselect));
+  abtCmd[2] = ui8Target;
+  
+  return(pn53x_transceive(pnd,abtCmd,sizeof(abtCmd),NULL,NULL));
+}
\ No newline at end of file
diff --git a/libnfc/chips/pn53x.h b/libnfc/chips/pn53x.h
index 804ec0e..cc6ce59 100644
--- a/libnfc/chips/pn53x.h
+++ b/libnfc/chips/pn53x.h
@@ -1,7 +1,7 @@
 /*-
  * Public platform independent Near Field Communication (NFC) library
  * 
- * Copyright (C) 2009, Roel Verdult
+ * Copyright (C) 2009, 2010, Roel Verdult, Romuald Conty
  * 
  * This program is free software: you can redistribute it and/or modify it
  * under the terms of the GNU Lesser General Public License as published by the
@@ -79,6 +79,7 @@ bool pn53x_unwrap_frame(const byte_t* pbtFrame, const size_t szFrameBits, byte_t
 bool pn53x_decode_target_data(const byte_t* pbtRawData, size_t szDataLen, nfc_chip_t nc, nfc_target_type_t ntt, nfc_target_info_t* pnti);
 
 bool pn53x_InListPassiveTarget(const nfc_device_t* pnd, const nfc_modulation_t nmInitModulation, const byte_t szMaxTargets, const byte_t* pbtInitiatorData, const size_t szInitiatorDataLen, byte_t* pbtTargetsData, size_t* pszTargetsData);
+bool pn53x_InDeselect(const nfc_device_t* pnd, const uint8_t ui8Target);
 
 #endif // __NFC_CHIPS_PN53X_H__
 
diff --git a/libnfc/nfc.c b/libnfc/nfc.c
index 11ef4af..78284ab 100644
--- a/libnfc/nfc.c
+++ b/libnfc/nfc.c
@@ -53,7 +53,7 @@ extern const byte_t pncmd_rf_configure               [ 14];
 // extern const byte_t pncmd_initiator_list_passive        [264];
 extern const byte_t pncmd_initiator_jump_for_dep        [ 68];
 // extern const byte_t pncmd_initiator_select              [  3];
-extern const byte_t pncmd_initiator_deselect            [  3];
+// extern const byte_t pncmd_initiator_deselect            [  3];
 // extern const byte_t pncmd_initiator_release             [  3];
 // extern const byte_t pncmd_initiator_set_baud_rate       [  5];
 extern const byte_t pncmd_initiator_exchange_data       [265];
@@ -550,7 +550,7 @@ nfc_initiator_select_passive_target(const nfc_device_t* pnd,
  */
 bool nfc_initiator_deselect_target(const nfc_device_t* pnd)
 {
-  return (pn53x_transceive(pnd,pncmd_initiator_deselect,3,NULL,NULL));
+  return (pn53x_InDeselect(pnd, 0)); // 0 mean deselect all selected targets
 }
 
 /**