31 lines
877 B
Plaintext
31 lines
877 B
Plaintext
IO6 = BAT_VOLTAGE 读取电池电压，作为电量的粗略判断
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IO7 = ADC_CTL 开关读取电压的MOS管，防止电池电量跑光
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IO15 = POW_CTL 开关各种外围芯片的电源
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IO8 = I2C_SDA
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IO19 = Button0 按钮信号0
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IO20 = Button1 按钮信号1，两个按钮的状态：00无按键；10左键；01右键；11中键
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~~IO41 = LED_CTL 控制状态LED灯
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~~IO46 = SD_CS sd卡片选
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IO9 = I2C_SCL
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IO10 = TFT_PWM TFT显示屏背光亮度控制
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IO11 = SPI_SDO(MISO)
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IO12 = SPI_SDI(MOSI)
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IO13 = SPI_CS
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IO14 = SPI_DC
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IO21 = SPI_SCL
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IO47 = TFE_RST TFT显示屏复位引脚
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~~IO45 = USB_PLUGIN_DETECT 检测USB是否插入，高电平有usb
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新增或修改的IO口
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IO4 = SD_CMD
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IO5 = SD_CLK
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IO16 = ESP_TX
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IO17 = ESP_RX
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IO18 = USB_PLUGIN_DETECT
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IO42 = LED_CTL
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IO41 = SD_DATA0
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IO40 = SD_DATA1
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IO39 = SD_DATA2
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IO38 = SD_DATA3
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IO48 = SD_CON
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