2026-04-04 15:28:27 +09:00
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.program wizchip_pio_spi_quad_write_read
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.side_set 1
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write_bits:
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out pins, 4 side 0
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jmp x-- write_bits side 1
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set pins 0 side 0
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public write_bits_end:
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read_byte_delay:
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set pindirs 0 side 0
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read_byte:
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set x 0 side 1
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read_bits:
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in pins, 4 side 0
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jmp x-- read_bits side 1
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in pins, 4 side 0
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jmp y-- read_byte side 0
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public read_bits_end:
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