Module rp2040_pac::pio0::sm::sm_shiftctrl

Control behaviour of the input/output shift registers for state machine 0

Structs

• SM_SHIFTCTRL_SPEC
  Control behaviour of the input/output shift registers for state machine 0

Type Aliases

• AUTOPULL_R
  Field AUTOPULL reader - Pull automatically when the output shift register is emptied, i.e. on or following an OUT instruction which causes the output shift counter to reach or exceed PULL_THRESH.
• AUTOPULL_W
  Field AUTOPULL writer - Pull automatically when the output shift register is emptied, i.e. on or following an OUT instruction which causes the output shift counter to reach or exceed PULL_THRESH.
• AUTOPUSH_R
  Field AUTOPUSH reader - Push automatically when the input shift register is filled, i.e. on an IN instruction which causes the input shift counter to reach or exceed PUSH_THRESH.
• AUTOPUSH_W
  Field AUTOPUSH writer - Push automatically when the input shift register is filled, i.e. on an IN instruction which causes the input shift counter to reach or exceed PUSH_THRESH.
• FJOIN_RX_R
  Field FJOIN_RX reader - When 1, RX FIFO steals the TX FIFO’s storage, and becomes twice as deep.
  TX FIFO is disabled as a result (always reads as both full and empty).
  FIFOs are flushed when this bit is changed.
• FJOIN_RX_W
  Field FJOIN_RX writer - When 1, RX FIFO steals the TX FIFO’s storage, and becomes twice as deep.
  TX FIFO is disabled as a result (always reads as both full and empty).
  FIFOs are flushed when this bit is changed.
• FJOIN_TX_R
  Field FJOIN_TX reader - When 1, TX FIFO steals the RX FIFO’s storage, and becomes twice as deep.
  RX FIFO is disabled as a result (always reads as both full and empty).
  FIFOs are flushed when this bit is changed.
• FJOIN_TX_W
  Field FJOIN_TX writer - When 1, TX FIFO steals the RX FIFO’s storage, and becomes twice as deep.
  RX FIFO is disabled as a result (always reads as both full and empty).
  FIFOs are flushed when this bit is changed.
• IN_SHIFTDIR_R
  Field IN_SHIFTDIR reader - 1 = shift input shift register to right (data enters from left). 0 = to left.
• IN_SHIFTDIR_W
  Field IN_SHIFTDIR writer - 1 = shift input shift register to right (data enters from left). 0 = to left.
• OUT_SHIFTDIR_R
  Field OUT_SHIFTDIR reader - 1 = shift out of output shift register to right. 0 = to left.
• OUT_SHIFTDIR_W
  Field OUT_SHIFTDIR writer - 1 = shift out of output shift register to right. 0 = to left.
• PULL_THRESH_R
  Field PULL_THRESH reader - Number of bits shifted out of OSR before autopull, or conditional pull (PULL IFEMPTY), will take place.
  Write 0 for value of 32.
• PULL_THRESH_W
  Field PULL_THRESH writer - Number of bits shifted out of OSR before autopull, or conditional pull (PULL IFEMPTY), will take place.
  Write 0 for value of 32.
• PUSH_THRESH_R
  Field PUSH_THRESH reader - Number of bits shifted into ISR before autopush, or conditional push (PUSH IFFULL), will take place.
  Write 0 for value of 32.
• PUSH_THRESH_W
  Field PUSH_THRESH writer - Number of bits shifted into ISR before autopush, or conditional push (PUSH IFFULL), will take place.
  Write 0 for value of 32.
• R
  Register SM_SHIFTCTRL reader
• W
  Register SM_SHIFTCTRL writer