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3 changes: 1 addition & 2 deletions src/picoboot.pio
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Original file line number Diff line number Diff line change
Expand Up @@ -35,8 +35,7 @@ wait_bit:
mov x, y ; Copy y value to x, it represents number of bits in the transfer
set pindirs 1 ; Set data line as output

out pins, 1 ; Output single IPL bit
jmp x-- on_rising_edge ; Decrement x
jmp write_bit ; Output first IPL bit from OSR

on_rising_edge:
wait 0 gpio PIN_CLK ; Sample until rising edge on CLK line
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