From 39e90502af74cb1086e6dd4dbc5e8633a9b738c6 Mon Sep 17 00:00:00 2001
From: Martine Lenders <mail@martine-lenders.eu>
Date: Sun, 3 Feb 2019 23:17:22 +0100
Subject: [PATCH] sam0_common: check ADC_NUMOF on adc_init()
---
cpu/sam0_common/periph/adc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/cpu/sam0_common/periph/adc.c b/cpu/sam0_common/periph/adc.c
index c2c5632ad5..326921fdb9 100644
--- a/cpu/sam0_common/periph/adc.c
+++ b/cpu/sam0_common/periph/adc.c
@@ -156,6 +156,10 @@ static int _adc_configure(adc_res_t res)
int adc_init(adc_t line)
{
+ if (line >= ADC_NUMOF) {
+ DEBUG("adc: line arg not applicable\n");
+ return -1;
+ }
_prep();
gpio_init(adc_channels[line].pin, GPIO_IN);
gpio_init_mux(adc_channels[line].pin, GPIO_MUX_B);
--
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