Diff: WIZnet/W5500.cpp

Revision:

1:2dee44ea52a9

Parent:

0:77e050d1fb12

--- a/WIZnet/W5500.cpp	Fri Jun 02 22:00:49 2017 +0000
+++ b/WIZnet/W5500.cpp	Thu Jun 15 20:19:23 2017 +0000
@@ -49,9 +49,7 @@
 
 bool WIZnet_Chip::setmac()
 {
-
     for (int i =0; i < 6; i++) reg_wr<uint8_t>(SHAR+i, mac[i]);
-
     return true;
 }
 
@@ -184,18 +182,24 @@
         int size1, size2;
         // during the reading Sn_RX_RSR, it has the possible change of this register.
         // so read twice and get same value then use size information.
-        do {
+        while (1) {
             size1 = sreg<uint16_t>(socket, Sn_RX_RSR);
             size2 = sreg<uint16_t>(socket, Sn_RX_RSR);
-            printf("WIZnet_Chip::wait_readable req_size = %d, size1 = %d, size2 = %d\r\n", req_size, size1, size2);
+            
+            if (size1 == size2) {
+                break;
+            }
             
             if (wait_time_ms != (-1) && t.read_ms() > wait_time_ms) {
                return NSAPI_ERROR_WOULD_BLOCK;
             }
-        } while (size1 != size2);
+            
+            if (!is_connected(socket)) {
+                return -1;
+            }
+        }
 
         if (size1 > req_size) {
-            printf("WIZnet_Chip::wait_readable returning %d\r\n", size1);
             return size1;
         }
         if (wait_time_ms != (-1) && t.read_ms() > wait_time_ms) {
@@ -307,6 +311,7 @@
 
 void WIZnet_Chip::spi_write(uint16_t addr, uint8_t cb, const uint8_t *buf, uint16_t len)
 {
+    spi->lock();
     cs = 0;
     spi->write(addr >> 8);
     spi->write(addr & 0xff);
@@ -327,10 +332,13 @@
     }
     debug("\r\n");
 #endif
+    spi->unlock();
+
 }
 
 void WIZnet_Chip::spi_read(uint16_t addr, uint8_t cb, uint8_t *buf, uint16_t len)
 {
+    spi->lock();
     cs = 0;
     spi->write(addr >> 8);
     spi->write(addr & 0xff);
@@ -354,6 +362,7 @@
         wait_ms(200);
     }
 #endif
+    spi->unlock();
 }
 
 uint32_t str_to_ip(const char* str)