From 005b4bfbb3c18574f47c2f2c9d4e6c687253a95f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20Nohlg=C3=A5rd?= <joakim.nohlgard@eistec.se>
Date: Wed, 22 Mar 2017 08:56:25 +0100
Subject: [PATCH] kinetis: Filter out PWM code if no FTM exists

---
 cpu/kinetis/periph/pwm.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/cpu/kinetis/periph/pwm.c b/cpu/kinetis/periph/pwm.c
index 5f2fd448b7..841191ecfc 100644
--- a/cpu/kinetis/periph/pwm.c
+++ b/cpu/kinetis/periph/pwm.c
@@ -29,6 +29,12 @@
 #include "assert.h"
 #include "periph/pwm.h"
 
+/* This driver uses the FlexTimer module (FTM) for generating PWM signals, but
+ * not all Kinetis CPUs have such a module. This preprocessor condition prevents
+ * compilation errors when the CPU header lacks the register definitions for the
+ * FTM */
+#ifdef FTM0
+
 #define PRESCALER_MAX       (7U)
 
 static inline FTM_Type *ftm(pwm_t pwm)
@@ -150,3 +156,5 @@ void pwm_poweroff(pwm_t pwm)
     }
 #endif
 }
+
+#endif /* defined(FTM0) */