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
