17 lines
442 B
C
17 lines
442 B
C
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void _start() {
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*(volatile unsigned int *)(0x60006010) |=
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(1 << 6) | (1 << 7); // UARTA & UARTB
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*(volatile unsigned int *)(0x60006014) |=
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(1 << 23) | (1 << 16); // UARTC & UARTD
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unsigned int uarts[] = {0x70006000, 0x70006040, 0x70006200, 0x70006300};
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while (1) {
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for (int j = 0; j < 4; j++) {
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*(volatile unsigned int *)(uarts[j] + 0x00) = 0x55;
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}
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for (volatile int i = 0; i < 50000; i++)
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;
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}
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}
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