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dfplayer.py
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from machine import UART
from utime import sleep_ms
class SimpleDFPlayerMini:
def __init__(self, tx_pin, baudrate=9600):
self._uart = UART(tx_pin, baudrate=baudrate)
self._send_cmd(0x09, 1)
self.set_eq(1)
self.pause()
def _send_cmd(self, cmd, data_low=0, data_high=0):
self._uart.write(b'\x7E')
self._uart.write(b'\xFF')
self._uart.write(b'\x06')
self._uart.write(bytes([cmd]))
self._uart.write(b'\x00')
self._uart.write(bytes([data_high]))
self._uart.write(bytes([data_low]))
self._uart.write(b'\xEF')
sleep_ms(200)
def next_track(self):
self._send_cmd(0x01)
def prev_track(self):
self._send_cmd(0x02)
def sel_track(self, track_index):
self._send_cmd(0x03, track_index)
def inc_vol(self):
self._send_cmd(0x04)
def dec_vol(self):
self._send_cmd(0x05)
def set_vol(self, volume):
self._send_cmd(0x06, volume)
def set_eq(self, equalizer):
self._send_cmd(0x07, equalizer)
def set_mode(self, mode):
self._send_cmd(0x08, mode)
def suspend(self):
self._send_cmd(0x0A)
def resume(self):
self._send_cmd(0x0B)
def reset(self):
self._send_cmd(0x0C)
def play(self):
self._send_cmd(0x0D)
def pause(self):
self._send_cmd(0x0E)
def set_folder(self, folder_index):
self._send_cmd(0x0F, folder_index)
def enable_loop(self):
self._send_cmd(0x11, 1)
def disable_loop(self):
self._send_cmd(0x11, 0)