From: qianyicheng <qianyicheng@espressif.com>
Date: Fri, 21 Jul 2017 11:06:44 +0000 (+0800)
Subject: bugfix(ledc): fix integer divided by zero in function ledc_set_fade_with_time
X-Git-Tag: v3.1-dev~411^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=acec9b9d35c86158f49d612fb79833936bfe6f9d;p=esp-idf

bugfix(ledc): fix integer divided by zero in function ledc_set_fade_with_time
---

diff --git a/components/driver/ledc.c b/components/driver/ledc.c
index 9cea7b5ec7..559aad5faa 100644
--- a/components/driver/ledc.c
+++ b/components/driver/ledc.c
@@ -514,6 +514,9 @@ esp_err_t ledc_set_fade_with_time(ledc_mode_t speed_mode, ledc_channel_t channel
         return ESP_OK;
     }
     int total_cycles = max_fade_time_ms * freq / 1000;
+    if (total_cycles == 0) {
+        return ledc_set_duty(speed_mode, channel, target_duty);
+    }
     int scale, cycle_num;
     if (total_cycles > duty_delta) {
         scale = 1;