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fix(ledc): fix frequency calculation

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ledc.c: Fix frequency calculation.
Round int instead of truncate.

Merges https://github.com/espressif/esp-idf/pull/11810
This commit is contained in:
IhorNehrutsa
2023-07-05 16:11:48 +03:00
committed by Song Ruo Jing
parent efc9761ff0
commit 1d158ddd10
2 changed files with 2 additions and 2 deletions
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2
components/driver/ledc/ledc.c
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@ -781,7 +781,7 @@ uint32_t ledc_get_freq(ledc_mode_t speed_mode, ledc_timer_t timer_num)
ESP_LOGW(LEDC_TAG, "LEDC timer not configured, call ledc_timer_config to set timer frequency");
return 0;
}
return ((uint64_t) src_clk_freq << 8) / precision / clock_divider;
return (((uint64_t) src_clk_freq << LEDC_LL_FRACTIONAL_BITS) + (uint64_t) precision * clock_divider / 2) / precision / clock_divider;
}
static inline void IRAM_ATTR ledc_calc_fade_end_channel(uint32_t *fade_end_status, uint32_t *channel)

2
components/driver/test_apps/ledc/main/test_ledc.c
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@ -553,7 +553,7 @@ static void timer_frequency_test(ledc_channel_t channel, ledc_timer_bit_t timer_
uint32_t clk_src_freq = 0;
esp_clk_tree_src_get_freq_hz((soc_module_clk_t)TEST_DEFAULT_CLK_CFG, ESP_CLK_TREE_SRC_FREQ_PRECISION_EXACT, &clk_src_freq);
if (clk_src_freq == 80 * 1000 * 1000) {
theoretical_freq = 8992;
theoretical_freq = 8993;
} else if (clk_src_freq == 96 * 1000 * 1000) {
theoretical_freq = 9009;
}