2325533_en-US

[#1]

HOW TO DEFINE I2S DMA PARA

hi NXP team,

#define DEMO_I2S_TX_INSTANCE_INDEX      (7U)

#define DEMO_DMA_INSTANCE_INDEX         (0U)

#define DEMO_I2S_TX_CHANNEL             (19)

#define DEMO_I2S_MASTER_CLOCK_FREQUENCY (24576000)

The above definitions use DMA to transmit I2S TX (I2S7). Now I want to use I2S6 for I2S DMA reception. How should I configure these values?

上面这些定义是使用DMA 传输 I2S TX （I2S7）, 我现在要使用I2S6 做i2s dma rx。改如何配置这几个值呢？

#define DEMO_I2S_RX_INSTANCE_INDEX      (????)

#define DEMO_RX_DMA_INSTANCE_INDEX         (????)

#define DEMO_I2S_RX_CHANNEL             (????)

Thanks

Harry 

Re: HOW TO DEFINE I2S DMA PARA

Hi @harry3 

May i ask which chip you are using?

BR

Harry

Re: HOW TO DEFINE I2S DMA PARA

Check your chip's Reference Manual / DMA Mux request source table for I2S6 RX / SAI6 RX (often sequential or offset from the TX channel).