fix(ledc): fix ledc_get_freq calculation err due to overflow

Closes #14882
espressif · Dec 5, 2024 · 83c244e · 83c244e
1 parent 1e3dbeb
commit 83c244e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/components/esp_driver_ledc/src/ledc.c b/components/esp_driver_ledc/src/ledc.c
@@ -1117,7 +1117,7 @@ uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num)
     ledc_hal_get_clock_divider(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &clock_divider);
     ledc_hal_get_duty_resolution(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &duty_resolution);
     ledc_hal_get_clk_cfg(&(p_ledc_obj[speed_mode]->ledc_hal), timer_num, &clk_cfg);
-    uint32_t precision = (0x1 << duty_resolution);
+    uint64_t precision = (0x1 << duty_resolution);
     uint32_t src_clk_freq = 0;
     esp_clk_tree_src_get_freq_hz((soc_module_clk_t)clk_cfg, LEDC_CLK_SRC_FREQ_PRECISION, &src_clk_freq);
     portEXIT_CRITICAL(&ledc_spinlock);