From 65ba440e75a89995905da7733ead2c8149a8ac0a Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 11 Nov 2013 15:18:57 -0600
Subject: [PATCH] Various fixes from initial attempts to integrate the SAMA5
 SSC/I2C driver with the I2C character driver loopback test

---
 examples/i2schar/i2schar_main.c        |  7 +++++++
 examples/i2schar/i2schar_receiver.c    |  9 ++++++---
 examples/i2schar/i2schar_transmitter.c | 11 ++++++++---
 3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/examples/i2schar/i2schar_main.c b/examples/i2schar/i2schar_main.c
index 2d5df3ce9..524a27550 100644
--- a/examples/i2schar/i2schar_main.c
+++ b/examples/i2schar/i2schar_main.c
@@ -297,9 +297,12 @@ int i2schar_main(int argc, char *argv[])
   ret = pthread_create(&transmitter, &attr, i2schar_transmitter, NULL);
   if (ret != OK)
     {
+      sched_unlock();
       message("i2schar_main: ERROR: failed to Start transmitter thread: %d\n", ret);
       return EXIT_FAILURE;
     }
+
+   pthread_setname_np(transmitter, "transmitter");
 #endif
 
 #ifdef CONFIG_EXAMPLES_I2SCHAR_RX
@@ -313,6 +316,7 @@ int i2schar_main(int argc, char *argv[])
   ret = pthread_create(&receiver, &attr, i2schar_receiver, NULL);
   if (ret != OK)
     {
+      sched_unlock();
       message("i2schar_main: ERROR: failed to Start receiver thread: %d\n", ret);
 #ifdef CONFIG_EXAMPLES_I2SCHAR_TX
       message("i2schar_main: Waiting for the transmitter thread\n");
@@ -320,8 +324,11 @@ int i2schar_main(int argc, char *argv[])
 #endif
       return EXIT_FAILURE;
     }
+
+   pthread_setname_np(transmitter, "receiver");
 #endif
 
+   sched_unlock();
 #ifdef CONFIG_EXAMPLES_I2SCHAR_TX
    message("i2schar_main: Waiting for the transmitter thread\n");
    ret = pthread_join(transmitter, &result);
diff --git a/examples/i2schar/i2schar_receiver.c b/examples/i2schar/i2schar_receiver.c
index 40256d571..279076c6a 100644
--- a/examples/i2schar/i2schar_receiver.c
+++ b/examples/i2schar/i2schar_receiver.c
@@ -94,6 +94,7 @@ pthread_addr_t i2schar_receiver(pthread_addr_t arg)
   struct audio_buf_desc_s desc;
   int bufsize;
   int nread;
+  int ret;
   int fd;
   int i;
 
@@ -117,15 +118,17 @@ pthread_addr_t i2schar_receiver(pthread_addr_t arg)
       desc.numbytes   = CONFIG_EXAMPLES_I2SCHAR_BUFSIZE;
       desc.u.ppBuffer = &apb;
 
-      bufsize = apb_alloc(&desc);
-      if (bufsize < 0)
+      ret = apb_alloc(&desc);
+      if (ret < 0)
         {
            message("i2schar_receiver: ERROR: failed to allocate buffer %d: %d\n",
-                   i+1, bufsize);
+                   i+1, ret);
            close(fd);
            pthread_exit(NULL);
         }
 
+      bufsize = sizeof(struct ap_buffer_s) + CONFIG_EXAMPLES_I2SCHAR_BUFSIZE;
+
       /* Then receifve into the buffer */
 
       do
diff --git a/examples/i2schar/i2schar_transmitter.c b/examples/i2schar/i2schar_transmitter.c
index 96717d2d0..601f9af39 100644
--- a/examples/i2schar/i2schar_transmitter.c
+++ b/examples/i2schar/i2schar_transmitter.c
@@ -96,6 +96,7 @@ pthread_addr_t i2schar_transmitter(pthread_addr_t arg)
   uint8_t *ptr;
   int bufsize;
   int nwritten;
+  int ret;
   int fd;
   int i;
   int j;
@@ -120,15 +121,17 @@ pthread_addr_t i2schar_transmitter(pthread_addr_t arg)
       desc.numbytes   = CONFIG_EXAMPLES_I2SCHAR_BUFSIZE;
       desc.u.ppBuffer = &apb;
 
-      bufsize = apb_alloc(&desc);
-      if (bufsize < 0)
+      ret = apb_alloc(&desc);
+      if (ret < 0)
         {
            message("i2schar_transmitter: ERROR: failed to allocate buffer %d: %d\n",
-                   i+1, bufsize);
+                   i+1, ret);
            close(fd);
            pthread_exit(NULL);
         }
 
+      bufsize = sizeof(struct ap_buffer_s) + CONFIG_EXAMPLES_I2SCHAR_BUFSIZE;
+
       /* Fill the audio buffer with crap */
 
       for (j = 0, ptr = apb->samp; j < CONFIG_EXAMPLES_I2SCHAR_BUFSIZE; j++)
@@ -136,6 +139,8 @@ pthread_addr_t i2schar_transmitter(pthread_addr_t arg)
           *ptr++ = crap++;
         }
 
+      apb->nbytes = CONFIG_EXAMPLES_I2SCHAR_BUFSIZE;
+
       /* Then send the buffer */
 
       do