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47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
import platform.pch.pic as pic
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import su8250
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import t, c
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# 串口初始化
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def init():
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# 初始化COM1端口
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su8250.init(su8250.COM1_PORT)
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# 启用COM1中断（IRQ4）
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pic.clearMask(4)
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# 发送一个字符到COM1
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def putc(cr: t.CChar):
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su8250.putchar(su8250.COM1_PORT, cr)
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def putchar(cr: t.CChar):
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su8250.putchar(su8250.COM1_PORT, cr)
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# 从COM1读取一个字符
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def getchar() -> t.CChar:
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return su8250.getchar(su8250.COM1_PORT)
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# 发送一个字符串到COM1
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def puts(s: str):
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# 逐个字符发送，直接复用putchar的逻辑
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for i in s:
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putchar(i)
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# 检查COM1是否有数据可读
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def isDataAvailable() -> t.CInt:
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return su8250.isDataAvailable(su8250.COM1_PORT)
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# 检查COM1发送缓冲区是否为空
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def isTransmitEmpty() -> t.CInt:
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return su8250.isTransmitEmpty(su8250.COM1_PORT)
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# 发送32位十六进制值到COM1
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def put_hex32(value: t.CUInt32T):
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hex_digits: t.CArray[t.CChar, None] = ["0123456789ABCDEF"]
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buffer: t.CArray[t.CChar, 9]
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for i in range(7, -1, -1):
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buffer[i] = hex_digits[value & 0xF]
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value >>= 4
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buffer[8] = '\0'
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puts(buffer)
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