LPC4357 receiving data from UDA1380 using I2S

julianhoerz — Fri, 17 Jun 2016 22:12:29 GMT

Hello,

first of all, I'm an German student and I'm sorry for my bad English.

I want to make a simple example to record and play sound with the LPC4357.

What I actually have is the following code:

    //Init
    I2S_AUDIO_FORMAT_T audio_Confg;
    audio_Confg.SampleRate = 16000;
    audio_Confg.ChannelNumber = 1;
    audio_Confg.WordWidth = 16;

    //Boardinit

    Board_Audio_Init(LPC_I2S0, UDA1380_MIC_IN_LR);

    //I2Sinit

    Chip_I2S_Init(LPC_I2S0);
    Chip_I2S_RxConfig(LPC_I2S0, &audio_Confg);
    Chip_I2S_TxConfig(LPC_I2S0, &audio_Confg);
    Chip_I2S_DisableMute(LPC_I2S0);

    uint32_t buffer;
    while(1)
    {

        if(Chip_I2S_GetRxLevel(LPC_I2S0)>= 1)
        {
            //Receiving Data
            Chip_I2S_RxStart(LPC_I2S0);
            buffer = Chip_I2S_Receive(LPC_I2S0);
            Chip_I2S_RxStop(LPC_I2S0);

            //Play Sound

            Chip_I2S_TxStart(LPC_I2S0);
            Chip_I2S_Send(LPC_I2S0, buffer);
            Chip_I2S_TxStop(LPC_I2S0);
        }
    }

Normally the program should record sound and the play it directly.

But it does nothing...

I know how to play sound from a buffer, I saw the example "ea_audio_i2s" from LPC Open. But there is no example for recording sound. There is an example "periph_i2s" but it doesn't run...

I've already wasted two whole days and now I don't know what to do anymore.

I really tried everything.

Maybe my jumpers are set wrong. I attached to photos of my configuration.

I found a similar question here:

LPC4088 receiving data from UDA1380 using I2S | www.LPCware.com

...but nobody answered to this post.

I am using this development kit:

https://www.embeddedartists.com/products/kits/lpc4357_kit.php

And I have the LPC-Link 2 for debugging.

Thanks for taking time and reading.

Best regards

Julian

Re: LPC4357 receiving data from UDA1380 using I2S

lpcware — Sun, 19 Jun 2016 01:13:34 GMT

bump

Re: LPC4357 receiving data from UDA1380 using I2S

julianhoerz — Wed, 29 Jun 2016 18:40:10 GMT

Ok, the examples are working. I forgot to set a jumper on my board...

Thanks anyway! :smileyhappy:

Re: LPC4357 receiving data from UDA1380 using I2S

daianacasas — Wed, 14 Dec 2016 23:01:09 GMT

Hi, i've a question about serial data out.
I am using an adc with this interface, I need to read the data an this is a signed-2's-complement, and bit 0 is the MSB, i'm correct?

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LPC4357 receiving data from UDA1380 using I2S

Re: LPC4357 receiving data from UDA1380 using I2S

Re: LPC4357 receiving data from UDA1380 using I2S

Re: LPC4357 receiving data from UDA1380 using I2S