From ddde2dd8f2749e2c2a9302f60e9dd747f0da46e9 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <yobibe@gmail.com>
Date: Tue, 11 Mar 2014 00:13:26 +0100
Subject: [PATCH] initiator_select_passive_target(): now supports all speeds
 for ISO14443-4A tags

---
 libnfc/chips/pn53x.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/libnfc/chips/pn53x.c b/libnfc/chips/pn53x.c
index 31c6da7..d85c7d0 100644
--- a/libnfc/chips/pn53x.c
+++ b/libnfc/chips/pn53x.c
@@ -1143,7 +1143,7 @@ pn53x_initiator_select_passive_target_ext(struct nfc_device *pnd,
   } else {
 
     const pn53x_modulation pm = pn53x_nm_to_pm(nm);
-    if (PM_UNDEFINED == pm) {
+    if ((PM_UNDEFINED == pm)||(NBR_UNDEFINED == nm.nbr)) {
       pnd->last_error = NFC_EINVARG;
       return pnd->last_error;
     }
@@ -1158,6 +1158,14 @@ pn53x_initiator_select_passive_target_ext(struct nfc_device *pnd,
     if ((res = pn53x_decode_target_data(abtTargetsData + 1, szTargetsData - 1, CHIP_DATA(pnd)->type, nm.nmt, &(nttmp.nti))) < 0) {
       return res;
     }
+    if (nm.nbr != NBR_106) {
+      uint8_t pncmd_inpsl[4] = { InPSL, 0x01 };
+      pncmd_inpsl[2] = nm.nbr - 1;
+      pncmd_inpsl[3] = nm.nbr - 1;
+      if ((res = pn53x_transceive(pnd, pncmd_inpsl, sizeof(pncmd_inpsl), NULL, 0, 0)) < 0) {
+        return res;
+      }
+    }
   }
   if (pn53x_current_target_new(pnd, &nttmp) == NULL) {
     pnd->last_error = NFC_ESOFT;