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

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qianyicheng
2017-07-21 19:06:44 +08:00
parent d515eeac6a
commit acec9b9d35
1 changed files with 3 additions and 0 deletions
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3
components/driver/ledc.c
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@@ -514,6 +514,9 @@ esp_err_t ledc_set_fade_with_time(ledc_mode_t speed_mode, ledc_channel_t channel
return ESP_OK; return ESP_OK;
} }
int total_cycles = max_fade_time_ms * freq / 1000; 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; int scale, cycle_num;
if (total_cycles > duty_delta) { if (total_cycles > duty_delta) {
scale = 1; scale = 1;