From 8af9796b1642189f590520062b1a00e965d5985e Mon Sep 17 00:00:00 2001
From: Tweako <tweako@live.nl>
Date: Wed, 16 Sep 2020 10:29:33 +0200
Subject: [PATCH] stm32/led: Support PWM output without TIM3.

For example, the STM32WB55 doesn't have TIM3 but can still drive LEDs using
PWM on other timers.
---
 ports/stm32/led.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ports/stm32/led.c b/ports/stm32/led.c
index 9231718846..adcb240cc0 100644
--- a/ports/stm32/led.c
+++ b/ports/stm32/led.c
@@ -141,9 +141,11 @@ STATIC void led_pwm_init(int led) {
         case 2:
             __TIM2_CLK_ENABLE();
             break;
+        #if defined(TIM3)
         case 3:
             __TIM3_CLK_ENABLE();
             break;
+        #endif
         default:
             assert(0);
     }