LPC4088 I2S configuration

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paw39
Posts: 1
Joined: Wed Dec 31, 2014 5:42 am

LPC4088 I2S configuration

Post by paw39 » Wed Dec 31, 2014 5:47 am

Hi everyone! :)
I try to receive data from UDA1380 chip(ADC/DAC) by I2S. Could you tell me if my config is ok? I still get interrrupt and only 000000.. appear in UART terminal :(

Code: Select all

/*
===============================================================================
 Name        : kodek.c
 Author      : $(author)
 Version     :
 Copyright   : $(copyright)
 Description : main definition
===============================================================================
*/

#ifdef __USE_CMSIS
#include "LPC407x_8x.h"
#endif




#include "lpc_i2s.h"
#include "lpc_pinsel.h"
#include "uda1380.h"
#include "debug_frmwrk.h"



int main(void) {

	debug_frmwrk_init();
	int8_t ret;
	I2S_MODEConf_Type I2S_ClkConfig;
	I2S_CFG_Type I2S_ConfigStruct;

	volatile uint32_t i;

	PINSEL_ConfigPin(0,7,1); //TX
	PINSEL_ConfigPin(0,8,1);
	PINSEL_ConfigPin(0,9,1);
	PINSEL_ConfigPin(0,23,2); //RX
	PINSEL_ConfigPin(0,24,2);
	PINSEL_ConfigPin(0,25,2);


	PINSEL_ConfigPin(1,16,2); //MCLK

	I2S_Init(LPC_I2S);


	/* Audio Config*/
	I2S_ConfigStruct.wordwidth = I2S_WORDWIDTH_16;
	I2S_ConfigStruct.mono = I2S_STEREO;
	I2S_ConfigStruct.stop = I2S_STOP_DISABLE;
	I2S_ConfigStruct.reset = I2S_RESET_ENABLE;
	I2S_ConfigStruct.ws_sel = I2S_MASTER_MODE;
	I2S_ConfigStruct.mute = I2S_MUTE_DISABLE;
	I2S_Config(LPC_I2S,I2S_TX_MODE,&I2S_ConfigStruct);

	I2S_ConfigStruct.ws_sel = I2S_SLAVE_MODE;
	I2S_Config(LPC_I2S,I2S_RX_MODE,&I2S_ConfigStruct);


		/* Clock Mode Config*/
	I2S_ClkConfig.clksel = I2S_CLKSEL_MCLK;
	I2S_ClkConfig.fpin = I2S_4PIN_DISABLE;
	I2S_ClkConfig.mcena = I2S_MCLK_ENABLE;
	I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_TX_MODE);

	I2S_ModeConfig(LPC_I2S,&I2S_ClkConfig,I2S_RX_MODE);


	I2S_FreqConfig(LPC_I2S, 44100, I2S_TX_MODE);
	I2S_SetBitRate(LPC_I2S,0,I2S_RX_MODE);

	//I2S_Stop(LPC_I2S, I2S_TX_MODE);
	I2S_Stop(LPC_I2S, I2S_RX_MODE);

	I2S_IRQConfig(LPC_I2S,I2S_TX_MODE,4);
	I2S_IRQCmd(LPC_I2S,I2S_RX_MODE,ENABLE);//przerwanie przy odbiorze

	LPC_I2S->RXBITRATE = 0;
	LPC_I2S->RXRATE = 0;




	for(i = 0; i <0x1000000; i++); // delay


	ret = Uda1380_Init(200000, 32000);
	if(ret==0){
	DEBUGOUT("Inicjalizacja kodek OK \r\n");
	}else{
		_DBD(ret);
	}

	for(i = 0; i <0x3000000; i++); // delay


    I2S_Start(LPC_I2S);

    NVIC_EnableIRQ(I2S_IRQn);

    while(1){

    }


    return 0;
}





void I2S_IRQHandler()
{

	uint32_t input = LPC_I2S->RXFIFO;

	_DBD32(input);
	DEBUGOUT("\r\n");


}



I hope you can help because nobody could. Thanks in advance!

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