From 10cc13bc82e3d58373af80f7602b9c0c46aa1c47 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= <ondra@ondrovo.com>
Date: Sat, 3 Feb 2018 22:47:50 +0100
Subject: [PATCH] added a buffer size check

---
 units/adc/_adc_init.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/units/adc/_adc_init.c b/units/adc/_adc_init.c
index 6ce4b31..98aad8b 100644
--- a/units/adc/_adc_init.c
+++ b/units/adc/_adc_init.c
@@ -133,6 +133,11 @@ error_t UADC_init(Unit *unit)
             dbg("!! Need at least 1 channel");
             return E_BAD_CONFIG;
         }
+
+        if (priv->dma_buffer_size < priv->nb_channels*2*2) {
+            dbg("Insufficient buf size");
+            return E_BAD_CONFIG;
+        }
     }
 
     // ------------------- ENABLE CLOCKS --------------------------