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i2s: fix write failure issue in slave mode (backport v4.1)

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laokaiyao
2021-09-06 14:43:41 +08:00
parent 7523759b30
commit 6aba908086
1 changed files with 10 additions and 2 deletions
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12
components/driver/i2s.c
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@ -314,6 +314,14 @@ 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; return ESP_ERR_INVALID_ARG;
} }
p_i2s_obj[i2s_num]->sample_rate = rate; 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) {
factor = 16 * bits;
}
double clkmdiv = (double)I2S_BASE_CLK / (rate * factor); double clkmdiv = (double)I2S_BASE_CLK / (rate * factor);
if (clkmdiv > 256) { if (clkmdiv > 256) {
@ -485,7 +493,7 @@ static void IRAM_ATTR i2s_intr_handler_default(void *arg)
//Avoid spurious interrupt //Avoid spurious interrupt
return; return;
} }
i2s_event_t i2s_event; i2s_event_t i2s_event;
int dummy; int dummy;
@ -883,7 +891,7 @@ esp_err_t i2s_driver_install(i2s_port_t i2s_num, const i2s_config_t *i2s_config,
} }
memset(p_i2s_obj[i2s_num], 0, sizeof(i2s_obj_t)); memset(p_i2s_obj[i2s_num], 0, sizeof(i2s_obj_t));
portMUX_TYPE i2s_spinlock_unlocked[1] = {portMUX_INITIALIZER_UNLOCKED}; portMUX_TYPE i2s_spinlock_unlocked[1] = {portMUX_INITIALIZER_UNLOCKED};
for (int x = 0; x < I2S_NUM_MAX; x++) { for (int x = 0; x < I2S_NUM_MAX; x++) {
i2s_spinlock[x] = i2s_spinlock_unlocked[0]; i2s_spinlock[x] = i2s_spinlock_unlocked[0];
} }