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xeye_ atsu / Mbed 2 deprecated I2S_AIC23B_32khz_wavtest

main.cpp@0:63ed631d8c3a, 2011-01-21 (annotated)

Committer:: lynxeyed_atsu
Date:: Fri Jan 21 08:39:48 2011 +0000
Revision:: 0:63ed631d8c3a

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User	Revision	Line number	New contents of line
lynxeyed_atsu	0:63ed631d8c3a	1	#include "mbed.h"
lynxeyed_atsu	0:63ed631d8c3a	2	#include "MSCFileSystem.h"
lynxeyed_atsu	0:63ed631d8c3a	3	#include "SDHCFileSystem.h"
lynxeyed_atsu	0:63ed631d8c3a	4	#include "i2s_irq_test.h"
lynxeyed_atsu	0:63ed631d8c3a	5	#include "lpc17xx_i2s.h"
lynxeyed_atsu	0:63ed631d8c3a	6	#include "lpc17xx_clkpwr.h"
lynxeyed_atsu	0:63ed631d8c3a	7	#include "aic23b_comm.h"
lynxeyed_atsu	0:63ed631d8c3a	8	#include "string"
lynxeyed_atsu	0:63ed631d8c3a	9
lynxeyed_atsu	0:63ed631d8c3a	10
lynxeyed_atsu	0:63ed631d8c3a	11	DigitalOut led1(LED1);
lynxeyed_atsu	0:63ed631d8c3a	12	DigitalOut led2(LED2);
lynxeyed_atsu	0:63ed631d8c3a	13	DigitalOut led3(LED3);
lynxeyed_atsu	0:63ed631d8c3a	14	Serial pc(USBTX, USBRX); // tx, rx
lynxeyed_atsu	0:63ed631d8c3a	15	I2C AIC23B(p9,p10); //sda,scl
lynxeyed_atsu	0:63ed631d8c3a	16	SDFileSystem sd(p11, p12, p13, p14, "sd");//p5,6,7,8
lynxeyed_atsu	0:63ed631d8c3a	17	MSCFileSystem msc("msc"); // Mount flash drive under the name "msc"
lynxeyed_atsu	0:63ed631d8c3a	18
lynxeyed_atsu	0:63ed631d8c3a	19
lynxeyed_atsu	0:63ed631d8c3a	20	FILE infp,outfp;
lynxeyed_atsu	0:63ed631d8c3a	21	Ticker tick;
lynxeyed_atsu	0:63ed631d8c3a	22	// a FIFO for the DAC
lynxeyed_atsu	0:63ed631d8c3a	23	#define RAM_LENGTH 8192//8192
lynxeyed_atsu	0:63ed631d8c3a	24	#define RAM_LIMIT (RAM_LENGTH - 1)
lynxeyed_atsu	0:63ed631d8c3a	25	volatile static signed short DAC_fifo[RAM_LENGTH];
lynxeyed_atsu	0:63ed631d8c3a	26	volatile long int DAC_diff;
lynxeyed_atsu	0:63ed631d8c3a	27
lynxeyed_atsu	0:63ed631d8c3a	28
lynxeyed_atsu	0:63ed631d8c3a	29	int aic23b_send(int addr,char ctrl_address,char ctrl_data){
lynxeyed_atsu	0:63ed631d8c3a	30	int flag;
lynxeyed_atsu	0:63ed631d8c3a	31	char cmd[2];
lynxeyed_atsu	0:63ed631d8c3a	32	cmd[0]=ctrl_address;
lynxeyed_atsu	0:63ed631d8c3a	33	cmd[1]=ctrl_data;
lynxeyed_atsu	0:63ed631d8c3a	34	flag = AIC23B.write(addr, cmd, 2);
lynxeyed_atsu	0:63ed631d8c3a	35	pc.printf("ADDR=0x%x, CTRL_ADD=0x%x, CTRL_DATA=0x%x, RESP=0x%x\r\n",(addr&0x7f),cmd[0],cmd[1],flag);
lynxeyed_atsu	0:63ed631d8c3a	36	return (flag);
lynxeyed_atsu	0:63ed631d8c3a	37	}
lynxeyed_atsu	0:63ed631d8c3a	38
lynxeyed_atsu	0:63ed631d8c3a	39	void aic23b_init(void){
lynxeyed_atsu	0:63ed631d8c3a	40	int flag=0;
lynxeyed_atsu	0:63ed631d8c3a	41	printf("***********************\r\nReset TLV320AIC23B\r\n***********************\r\n");
lynxeyed_atsu	0:63ed631d8c3a	42	AIC23B.frequency(150000);
lynxeyed_atsu	0:63ed631d8c3a	43	flag = aic23b_send(AIC23B_ADDRESS,RESET_REFGISTER,RESET);
lynxeyed_atsu	0:63ed631d8c3a	44	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	45	flag += aic23b_send(AIC23B_ADDRESS,POWER_DOWN_CONTROL,0);
lynxeyed_atsu	0:63ed631d8c3a	46	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	47	flag += aic23b_send(AIC23B_ADDRESS,POWER_DOWN_CONTROL,1);
lynxeyed_atsu	0:63ed631d8c3a	48	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	49	flag += aic23b_send(AIC23B_ADDRESS,DIGITAL_AUDIO_INTERFACE_FORMAT,(MASTER_MODE\|INPUT_DATA_16_BIT_LENGTH\|I2S_FORMAT));
lynxeyed_atsu	0:63ed631d8c3a	50	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	51	flag += aic23b_send(AIC23B_ADDRESS,SAMPLE_RATE_CONTROL,((0x06<<2)\|0x01/(SR_USB_44_1_KHZ_MODE\| BOSR_USB_44_1_KHZ_MODE\| USE_USB_CLOCK_44_1_KHZ_MODE)/));
lynxeyed_atsu	0:63ed631d8c3a	52	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	53	flag += aic23b_send(AIC23B_ADDRESS,ANALOG_AUDIO_PATH_CONTROL,0x10);
lynxeyed_atsu	0:63ed631d8c3a	54	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	55	flag += aic23b_send(AIC23B_ADDRESS,DIGITAL_AUDIO_PATH_CONTROL,0);
lynxeyed_atsu	0:63ed631d8c3a	56	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	57	flag += aic23b_send(AIC23B_ADDRESS,DIGITAL_INTERFACE_ACTIVATION,DIGITAL_INTERFACE_ACTIVE);
lynxeyed_atsu	0:63ed631d8c3a	58	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	59	flag += aic23b_send(AIC23B_ADDRESS,LEFT_CHANNEL_HEADPHONE_VOLUME_CONTROL,LHV_VOLUME_DEFAULT);
lynxeyed_atsu	0:63ed631d8c3a	60	wait(0.1);
lynxeyed_atsu	0:63ed631d8c3a	61	flag += aic23b_send(AIC23B_ADDRESS,RIGHT_CHANNEL_HEADPHONE_VOLUME_CONTROL,RHV_VOLUME_DEFAULT);
lynxeyed_atsu	0:63ed631d8c3a	62
lynxeyed_atsu	0:63ed631d8c3a	63	if(!flag) printf("***********************\r\nReset OK\r\n***********************\r\n");
lynxeyed_atsu	0:63ed631d8c3a	64	else printf("***********************\r\nReset FAILED\r\n***********************\r\n");
lynxeyed_atsu	0:63ed631d8c3a	65	}
lynxeyed_atsu	0:63ed631d8c3a	66
lynxeyed_atsu	0:63ed631d8c3a	67
lynxeyed_atsu	0:63ed631d8c3a	68	void dac_out(void)
lynxeyed_atsu	0:63ed631d8c3a	69	{
lynxeyed_atsu	0:63ed631d8c3a	70
lynxeyed_atsu	0:63ed631d8c3a	71	volatile static unsigned short DAC_rptr;
lynxeyed_atsu	0:63ed631d8c3a	72	volatile static unsigned long dataLR;
lynxeyed_atsu	0:63ed631d8c3a	73	if (DAC_diff > 18) {
lynxeyed_atsu	0:63ed631d8c3a	74	led2 = 0;
lynxeyed_atsu	0:63ed631d8c3a	75	short llp;
lynxeyed_atsu	0:63ed631d8c3a	76	for(llp=0;llp < 9;llp++){
lynxeyed_atsu	0:63ed631d8c3a	77	if(I2S_GetLevel(LPC_I2S, I2S_TX_MODE)==TXFIFO_FULL)break;
lynxeyed_atsu	0:63ed631d8c3a	78	dataLR = (0xffff0000 & (DAC_fifo[DAC_rptr++]<<16))\|(0x0000ffff & DAC_fifo[DAC_rptr++]);
lynxeyed_atsu	0:63ed631d8c3a	79	I2S_Send(LPC_I2S,dataLR);
lynxeyed_atsu	0:63ed631d8c3a	80	DAC_rptr &= RAM_LIMIT;
lynxeyed_atsu	0:63ed631d8c3a	81	DAC_diff -= 2;
lynxeyed_atsu	0:63ed631d8c3a	82	}
lynxeyed_atsu	0:63ed631d8c3a	83
lynxeyed_atsu	0:63ed631d8c3a	84	}else led2 = 1;
lynxeyed_atsu	0:63ed631d8c3a	85
lynxeyed_atsu	0:63ed631d8c3a	86	}
lynxeyed_atsu	0:63ed631d8c3a	87
lynxeyed_atsu	0:63ed631d8c3a	88	void decode(void){
lynxeyed_atsu	0:63ed631d8c3a	89	volatile static unsigned short DAC_wptr=0;
lynxeyed_atsu	0:63ed631d8c3a	90	volatile static long int decode_buff;
lynxeyed_atsu	0:63ed631d8c3a	91	volatile long diff=0,diff2=0;
lynxeyed_atsu	0:63ed631d8c3a	92	while(1){
lynxeyed_atsu	0:63ed631d8c3a	93
lynxeyed_atsu	0:63ed631d8c3a	94	volatile short buffLR;
lynxeyed_atsu	0:63ed631d8c3a	95
lynxeyed_atsu	0:63ed631d8c3a	96	if((buffLR = 0xff & fgetc(infp))==EOF)break;
lynxeyed_atsu	0:63ed631d8c3a	97	buffLR \|= 0xff00 & (fgetc(infp) << 8);
lynxeyed_atsu	0:63ed631d8c3a	98	diff = buffLR;
lynxeyed_atsu	0:63ed631d8c3a	99	DAC_fifo[DAC_wptr++]=(signed short)diff;
lynxeyed_atsu	0:63ed631d8c3a	100	DAC_wptr &= RAM_LIMIT;
lynxeyed_atsu	0:63ed631d8c3a	101	// DAC_diff++;
lynxeyed_atsu	0:63ed631d8c3a	102
lynxeyed_atsu	0:63ed631d8c3a	103	while (DAC_diff > RAM_LIMIT){
lynxeyed_atsu	0:63ed631d8c3a	104	led1 = 1;
lynxeyed_atsu	0:63ed631d8c3a	105	} //wait
lynxeyed_atsu	0:63ed631d8c3a	106	led1=0;
lynxeyed_atsu	0:63ed631d8c3a	107
lynxeyed_atsu	0:63ed631d8c3a	108	if((buffLR = 0xff & fgetc(infp))==EOF)break;
lynxeyed_atsu	0:63ed631d8c3a	109	buffLR \|= 0xff00 & (fgetc(infp) << 8);
lynxeyed_atsu	0:63ed631d8c3a	110	diff = buffLR;
lynxeyed_atsu	0:63ed631d8c3a	111	DAC_fifo[DAC_wptr++]=(signed short)diff;
lynxeyed_atsu	0:63ed631d8c3a	112	DAC_wptr &= RAM_LIMIT;
lynxeyed_atsu	0:63ed631d8c3a	113	DAC_diff+=2;
lynxeyed_atsu	0:63ed631d8c3a	114
lynxeyed_atsu	0:63ed631d8c3a	115
lynxeyed_atsu	0:63ed631d8c3a	116
lynxeyed_atsu	0:63ed631d8c3a	117
lynxeyed_atsu	0:63ed631d8c3a	118	while (DAC_diff > RAM_LIMIT){
lynxeyed_atsu	0:63ed631d8c3a	119	led1 = 1;
lynxeyed_atsu	0:63ed631d8c3a	120	} //wait
lynxeyed_atsu	0:63ed631d8c3a	121	led1=0;
lynxeyed_atsu	0:63ed631d8c3a	122
lynxeyed_atsu	0:63ed631d8c3a	123
lynxeyed_atsu	0:63ed631d8c3a	124
lynxeyed_atsu	0:63ed631d8c3a	125	}
lynxeyed_atsu	0:63ed631d8c3a	126	}
lynxeyed_atsu	0:63ed631d8c3a	127
lynxeyed_atsu	0:63ed631d8c3a	128
lynxeyed_atsu	0:63ed631d8c3a	129	int main() {
lynxeyed_atsu	0:63ed631d8c3a	130
lynxeyed_atsu	0:63ed631d8c3a	131	mbed_i2s_init(); //DAC:44100Hz sampling ,16bit ,Stereo ,MCLK Disable, TLV320AIC23B=Master
lynxeyed_atsu	0:63ed631d8c3a	132	aic23b_init();
lynxeyed_atsu	0:63ed631d8c3a	133
lynxeyed_atsu	0:63ed631d8c3a	134
lynxeyed_atsu	0:63ed631d8c3a	135
lynxeyed_atsu	0:63ed631d8c3a	136	pc.printf("CCLKCFG= %d \r\n",LPC_SC->CCLKCFG);
lynxeyed_atsu	0:63ed631d8c3a	137	pc.printf("I2S Send start.\r\n");
lynxeyed_atsu	0:63ed631d8c3a	138	led2=1;
lynxeyed_atsu	0:63ed631d8c3a	139
lynxeyed_atsu	0:63ed631d8c3a	140	//infp = NULL;
lynxeyed_atsu	0:63ed631d8c3a	141	//
lynxeyed_atsu	0:63ed631d8c3a	142	while(1){
lynxeyed_atsu	0:63ed631d8c3a	143	if ( NULL == (infp = fopen( "/sd/test.wav", "r" )) ) {
lynxeyed_atsu	0:63ed631d8c3a	144	printf( "\r\nError: The message file cannot be accessed\r\n" );
lynxeyed_atsu	0:63ed631d8c3a	145	return -1;
lynxeyed_atsu	0:63ed631d8c3a	146	}
lynxeyed_atsu	0:63ed631d8c3a	147	fseek(infp, 0L, SEEK_SET);
lynxeyed_atsu	0:63ed631d8c3a	148	tick.attach_us(&dac_out, 250); //set 32kHz/8(word FIFO) sampling data
lynxeyed_atsu	0:63ed631d8c3a	149	decode();
lynxeyed_atsu	0:63ed631d8c3a	150
lynxeyed_atsu	0:63ed631d8c3a	151	fclose( infp );
lynxeyed_atsu	0:63ed631d8c3a	152	infp = NULL;
lynxeyed_atsu	0:63ed631d8c3a	153	tick.detach();
lynxeyed_atsu	0:63ed631d8c3a	154
lynxeyed_atsu	0:63ed631d8c3a	155
lynxeyed_atsu	0:63ed631d8c3a	156
lynxeyed_atsu	0:63ed631d8c3a	157	}
lynxeyed_atsu	0:63ed631d8c3a	158	}
lynxeyed_atsu	0:63ed631d8c3a	159
lynxeyed_atsu	0:63ed631d8c3a	160
lynxeyed_atsu	0:63ed631d8c3a	161

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	21 Jan 2011
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

main.cpp@0:63ed631d8c3a, 2011-01-21 (annotated)

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