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i2s: add support fixed_mclk configuration

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Tuan PM
2018-02-16 13:50:45 +07:00
parent c3bec5b103
commit 7cda34c626
4 changed files with 65 additions and 79 deletions
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7
components/driver/include/driver/i2s.h
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@@ -138,7 +138,8 @@ typedef struct {
int intr_alloc_flags; /*!< Flags used to allocate the interrupt. One or multiple (ORred) ESP_INTR_FLAG_* values. See esp_intr_alloc.h for more info */
int dma_buf_count; /*!< I2S DMA Buffer Count */
int dma_buf_len; /*!< I2S DMA Buffer Length */
int use_apll; /*!< I2S using APLL as main I2S clock, enable it to get accurate clock */
bool use_apll; /*!< I2S using APLL as main I2S clock, enable it to get accurate clock */
int fixed_mclk; /*!< I2S using fixed MCLK output. If use_apll = true and fixed_mclk > 0, then the clock output for i2s is fixed and equal to the fixed_mclk value.*/
} i2s_config_t;
/**
@@ -391,7 +392,7 @@ esp_err_t i2s_zero_dma_buffer(i2s_port_t i2s_num);
/**
* @brief Set clock & bit width used for I2S RX and TX.
*
*
* Similar to i2s_set_sample_rates(), but also sets bit width.
*
* @param i2s_num I2S_NUM_0, I2S_NUM_1
@@ -401,7 +402,7 @@ esp_err_t i2s_zero_dma_buffer(i2s_port_t i2s_num);
* @param bits I2S bit width (I2S_BITS_PER_SAMPLE_16BIT, I2S_BITS_PER_SAMPLE_24BIT, I2S_BITS_PER_SAMPLE_32BIT)
*
* @param ch I2S channel, (I2S_CHANNEL_MONO, I2S_CHANNEL_STEREO)
*
*
* @return
* - ESP_OK Success
* - ESP_FAIL Parameter error