14 lines
430 B
C
14 lines
430 B
C
#define PL011_SERIAL_BASE 0x10009000
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#define PL011_SERIAL_FLAG_REGISTER 0x18
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#define PL011_SERIAL_BUFFER_FULL (1 << 5)
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void pl011_putc(char c)
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{
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/* Wait until the serial buffer is empty */
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while (*(volatile unsigned long*)(PL011_SERIAL_BASE + PL011_SERIAL_FLAG_REGISTER)
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& (PL011_SERIAL_BUFFER_FULL));
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/* When it's empty, put our character at the base */
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*(volatile unsigned long*)PL011_SERIAL_BASE = c;
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}
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