add mp3 player code

2025-03-16 23:34:49 +08:00
parent 95a528d5b7
commit 4c8b136686
19 changed files with 1782 additions and 0 deletions
--- a/Code/MP3Player/main_task.h
+++ b/Code/MP3Player/main_task.h
@@ -0,0 +1,118 @@
+///////////////////////////////////////////////////
+// MP3 player for RPi Pico and GPIO audio output //
+///////////////////////////////////////////////////
+//
+// This program will read MP3 files from a SD card and
+// play them on the RP2040 launchpad. The MP3 decoder is
+// implemented in software, so only some kind of PCM
+// output is necessary, which is provided by a driver
+// which outputs the PCM data as PWM GPIO signals.
+//
+// The main task will loop over all *.mp3 files and play
+// them. The next-button can be used to skip to the next
+// song. The paart-button is used to select the partition
+// of the SD card during startup.
+//
+// For every new song, the SD reader and MP3 decoder
+// tasks are started again.
+//
+// Make sure you connect the SD-card PCB to the correct
+// SPI interface (see pin assignments in config.h), and
+// provide some MP3 files without too high quality
+// (128 kbps works fine!)
+
+#ifndef MAIN_TASK_H
+#define MAIN_TASK_H
+
+#include "config.h"
+#include "gpio_rp2040.h"
+#include "spi_rp2040.h"
+#include "sd_spi_drv.h"
+#include "pcm_pwm_rp2040_drv.h"
+#include "task.h"
+#include "sd_reader_task.h"
+#include "mp3_decoder_task.h"
+#include "ff.h"
+#include <cassert>
+#include "uGUI.h"
+#include "uGUI_colors.h"
+#include "font_6x8.h"
+#include "font_8x14.h"
+#include "font_12x20.h"
+#include "ili9488_drv.h"
+#include "i2ckbd.h"
+
+typedef struct menu_item {
+    uint16_t x;
+    uint16_t y;
+    char *fname; ///pointer to a malloced char buf
+    int fsize;
+}MENU_ITEM;
+
+
+class main_task : public task
+{
+public:
+    main_task();
+    void run() override;
+    void draw_string(int,int,const char*,uint8_t);
+    void draw_highlight_string(int,int,const char*);
+    void draw_char(int x,int y ,char c);
+    void draw_big_char(int x,int y ,char c);
+    void draw_bar(int x1,int x2,UG_COLOR c);
+    int enum_files();
+    int select_mp3();
+    void draw_cursor();
+    void boot_menu();
+    void menu_up();
+    void menu_down();
+    void menu_start(sd_reader_task&sd_reader,mp3_decoder_task &decoder,pcm_pwm_rp2040_drv &pcm_drv);
+    void menu_start_all(sd_reader_task&sd_reader,mp3_decoder_task &decoder,pcm_pwm_rp2040_drv &pcm_drv);
+    void draw_logo();
+    void clear_screen();
+    void clear_menu();
+    void draw_header(char*);
+    void draw_footer(uint8_t);
+    void draw_footer_enter();
+    void draw_footer_esc();
+    void draw_footer_nav();
+    void draw_footer_pause();
+    void draw_footer_pagenumber();
+    void draw_playing();
+    void draw_wrap_text(const char *);
+private:
+    gpio_rp2040_pin _cs;    // CS Line of SD card SPI interface
+    spi_rp2040      _spi;   // SPI interface used for the SD card reader
+    sd_spi_drv      _sd;    // SD card low level driver
+
+    gpio_rp2040_pin _next;  // Next button
+    gpio_rp2040_pin _part;  // Partition button
+    gpio_rp2040_pin _ps;    // Pico Power save pin
+
+    FatFs           _fs;
+    FatFs::DIR      _dir{};
+    FatFs::FILEINFO _finfo{};
+    FatFs::FILE     _file{};  // MP3 file on SD
+
+    gpio_rp2040_pin _lcd_rst;
+    gpio_rp2040_pin _lcd_dc;
+    gpio_rp2040_pin _lcd_cs;
+    spi_rp2040 _lcd_spi;
+    ili9488_drv _lcd;
+    uGUI       _gui;
+    int _sel_index;
+    int _page_index;
+    int _last_page_index;
+    int _last_sel_index;
+    uint8_t update_sel;
+    uint8_t update_required;
+    uint8_t playing;
+    uint16_t last_play_pos;
+    uint16_t play_pos;
+    MENU_ITEM  menu_items[MAX_FILES]{};
+    uint16_t num_files;
+    uint8_t pause_flag ;
+    uint8_t play_flag;//default:0, play_all = 1,play_shuffle = 2
+};
+
+#endif // MAIN_TASK_H