76 lines
2.7 KiB
Python
76 lines
2.7 KiB
Python
import machine
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import st7789py as st7789
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from config import CURRENT_CONFIG
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class Display:
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def __init__(self):
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self.tft = None
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self.width = 240
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self.height = 240
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self._init_display()
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def _init_display(self):
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print(">>> Initializing Display...")
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try:
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pins = CURRENT_CONFIG.pins
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spi = machine.SPI(2, baudrate=40000000, polarity=1, phase=1,
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sck=machine.Pin(pins['sck']), mosi=machine.Pin(pins['mosi']))
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cs_pin = pins.get('cs')
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cs = machine.Pin(cs_pin, machine.Pin.OUT) if cs_pin is not None else None
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rst_pin = pins.get('rst')
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dc_pin = pins.get('dc')
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self.tft = st7789.ST7789(spi, self.width, self.height,
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reset=machine.Pin(rst_pin, machine.Pin.OUT) if rst_pin else None,
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dc=machine.Pin(dc_pin, machine.Pin.OUT) if dc_pin else None,
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cs=cs,
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backlight=None)
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self.tft.init()
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self.tft.fill(st7789.BLUE)
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except Exception as e:
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print(f"Display error: {e}")
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self.tft = None
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def fill(self, color):
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if self.tft:
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self.tft.fill(color)
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def fill_rect(self, x, y, w, h, color):
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if self.tft:
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self.tft.fill_rect(x, y, w, h, color)
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def init_ui(self):
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"""初始化 UI 背景"""
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if self.tft:
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self.tft.fill(st7789.BLACK)
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self.tft.fill_rect(0, 0, 240, 30, st7789.WHITE)
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def update_audio_bar(self, bar_height, last_bar_height):
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"""更新音频可视化的柱状图"""
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if not self.tft: return last_bar_height
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# 确定当前颜色
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color = st7789.GREEN
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if bar_height > 50: color = st7789.YELLOW
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if bar_height > 100: color = st7789.RED
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# 确定上一次颜色
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last_color = st7789.GREEN
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if last_bar_height > 50: last_color = st7789.YELLOW
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if last_bar_height > 100: last_color = st7789.RED
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# 1. 如果变矮了，清除顶部多余部分
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if bar_height < last_bar_height:
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self.tft.fill_rect(100, 240 - last_bar_height, 40, last_bar_height - bar_height, st7789.BLACK)
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# 2. 如果颜色变了，必须重绘整个条
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if color != last_color:
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self.tft.fill_rect(100, 240 - bar_height, 40, bar_height, color)
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# 3. 如果颜色没变且变高了，只绘新增部分
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elif bar_height > last_bar_height:
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self.tft.fill_rect(100, 240 - bar_height, 40, bar_height - last_bar_height, color)
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return bar_height
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