From 2acfa0ebe7a8c80e028673138a05ac548a0c9d5c Mon Sep 17 00:00:00 2001
From: Dirk Ziegelmeier <dirk@ziegelmeier.net>
Date: Sat, 6 Aug 2016 20:28:01 +0200
Subject: [PATCH] Update NO_SYS_SampleCode.c: Don't access heap in IRQ

---
 doc/NO_SYS_SampleCode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/doc/NO_SYS_SampleCode.c b/doc/NO_SYS_SampleCode.c
index 83d3be57..fea32d67 100644
--- a/doc/NO_SYS_SampleCode.c
+++ b/doc/NO_SYS_SampleCode.c
@@ -2,8 +2,8 @@ void eth_mac_irq()
 {
   /* Service MAC IRQ here */
 
-  /* Allocate pbuf */
-  struct pbuf* p = pbuf_alloc(PBUF_RAW, eth_data_count, PBUF_RAM);
+  /* Allocate pbuf from pool (avoid using heap in interrupts) */
+  struct pbuf* p = pbuf_alloc(PBUF_RAW, eth_data_count, PBUF_POOL);
 
   if(p != NULL) {
     /* Copy ethernet frame into pbuf */