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i2s: fix write failure issue in slave mode

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laokaiyao
2021-09-06 13:39:25 +08:00
parent ba15ac8634
commit 07410a1381
2 changed files with 9 additions and 1 deletions
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8
components/driver/i2s.c
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@@ -327,6 +327,14 @@ esp_err_t i2s_set_clk(i2s_port_t i2s_num, uint32_t rate, i2s_bits_per_sample_t b
return ESP_ERR_INVALID_ARG;
}
p_i2s_obj[i2s_num]->sample_rate = rate;
/**
* Due to hardware issue, bck division on ESP32/ESP32-S2 should be greater than 8 in slave mode
* So the factor need to be an appropriate value
*/
if ((p_i2s_obj[i2s_num]->mode & I2S_MODE_SLAVE) && !p_i2s_obj[i2s_num]->use_apll) {
factor = 64 * bits;
}
double clkmdiv = (double)I2S_BASE_CLK / (rate * factor);
if (clkmdiv > 256) {