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Pi
2016.12.27 10:12
SD Memory 카드 SPI 3.3V/5.0V 인터페이스 모듈 Atmega2560 제어 예제
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http://www.jkelec.co.kr/img/parts/sd_atmega2560.html 1. Atmega2560 Rabbit 개발보드와 연결 실험 #include "hw_config.h"
#include "led.h"
#include "uart.h"
#include "mmc_sd.h"
#include "diskio.h"
#include "ff.h"
static FATFS fs; // Work area (file system object) for logical drive
static char path[20] = {""};
static DIR dirs;
static FILINFO finfo;
void sd_file_list(void)
{
u32 sd_size;
char tx_data[16];
if( disk_initialize(0) == 0 )
usart0_puts("\r\nsd initialize success.\r\n");
else
usart0_puts("\r\nsd initialize failed.\r\n");
#if 1
f_mount(0,&fs);
usart0_puts("\r\nf_mount()\r\n");
if (f_opendir (&dirs, path) == FR_OK)
{
usart0_puts("\r\nf_opendir()\r\n");
while (f_readdir (&dirs, &finfo) == FR_OK)
{
usart0_puts("\r\nf_readdir()\r\n");
usart0_format_puts ("\r\n%s", finfo.fname);
if (!(finfo.fattrib & AM_DIR))
{
if (!finfo.fname[0])
{
usart0_puts("\r\nfinfo.fname\r\n");
break;
}
usart0_format_puts ("\r\n%s", finfo.fname);
}
}
}
#endif
sd_size = SD_GetCapacity();
#ifdef USE_AVR_STUDIO
ultoa( sd_size, tx_data, 10);
#else
ultoa( tx_data, sd_size, 10);
#endif
usart0_format_puts("\r\nCapacity=%s Bytes\r\n", tx_data);
}
void main(void)
{
CLI(); // all interrupt disable
bsp_led_gpio_init();
#if 1
bsp_usart0_gpio_init();
if( F_CPU == 8000000UL )
{
bsp_usart0_init(F_CPU, EBaud38400, EData8, EParNone, EStop1, FALSE );
}
else
{
bsp_usart0_init(F_CPU, EBaud115200, EData8, EParNone, EStop1, FALSE );
}
init_usart0_buffer();
bsp_usart0_interrupt_enable();
SEI(); // all interrupt enable
bsp_led_core_on(ledUserCore);
sd_file_list();
#endif
//bsp_led_core_on(ledUserCore);
while( 1 )
{
_delay_ms(10);
}
return;
}Simple Audio Player 예제 https://www.arduino.cc/en/Tutorial/SimpleAudioPlayer /*
Simple Audio Player
Demonstrates the use of the Audio library for the Arduino Due
Hardware required :
* Arduino shield with a SD card on CS4
* A sound file named "test.wav" in the root directory of the SD card
* An audio amplifier to connect to the DAC0 and ground
* A speaker to connect to the audio amplifier
Original by Massimo Banzi September 20, 2012
Modified by Scott Fitzgerald October 19, 2012
Modified by Arturo Guadalupi December 18, 2015
This example code is in the public domain
http://www.arduino.cc/en/Tutorial/SimpleAudioPlayer
*/
#include <SD.h>
#include <SPI.h>
#include <Audio.h>
void setup() {
// debug output at 9600 baud
Serial.begin(9600);
// setup SD-card
Serial.print("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println(" failed!");
while(true);
}
Serial.println(" done.");
// hi-speed SPI transfers
// 44100kHz stereo => 88200 sample rate
// 100 mSec of prebuffering.
Audio.begin(88200, 100);
}
void loop() {
int count = 0;
// open wave file from sdcard
File myFile = SD.open("test.wav");
if (!myFile) {
// if the file didn't open, print an error and stop
Serial.println("error opening test.wav");
while (true);
}
const int S = 1024; // Number of samples to read in block
short buffer[S];
Serial.print("Playing");
// until the file is not finished
while (myFile.available()) {
// read from the file into buffer
myFile.read(buffer, sizeof(buffer));
// Prepare samples
int volume = 1024;
Audio.prepare(buffer, S, volume);
// Feed samples to audio
Audio.write(buffer, S);
// Every 100 block print a '.'
count++;
if (count == 100) {
Serial.print(".");
count = 0;
}
}
myFile.close();
Serial.println("End of file. Thank you for listening!");
while (true) ;
}Dreamy의 코드 스크랩내가 모으고 내가 보는
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