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rp/pio: add set-pin-{values,dirs} convenience functions

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these are needed a lot during state machine setup, it makes sense to
provide convenience functions for them.
This commit is contained in:
pennae
2023-05-05 20:45:02 +02:00
parent 41ec4170a5
commit 37b460637d
2 changed files with 61 additions and 8 deletions
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9
examples/rp/src/bin/pio_hd44780.rs
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@ -7,7 +7,7 @@ use core::fmt::Write;
use embassy_executor::Spawner;
use embassy_rp::dma::{AnyChannel, Channel};
use embassy_rp::peripherals::PIO0;
use embassy_rp::pio::{FifoJoin, Pio, PioPin, ShiftDirection, StateMachine};
use embassy_rp::pio::{Direction, FifoJoin, Pio, PioPin, ShiftDirection, StateMachine};
use embassy_rp::pwm::{Config, Pwm};
use embassy_rp::relocate::RelocatedProgram;
use embassy_rp::{into_ref, Peripheral, PeripheralRef};
@ -115,12 +115,7 @@ impl<'l> HD44780<'l> {
let db6 = common.make_pio_pin(db6);
let db7 = common.make_pio_pin(db7);
sm0.set_set_pins(&[&rs, &rw]);
embassy_rp::pio_instr_util::set_pindir(&mut sm0, 0b11);
sm0.set_set_pins(&[&e]);
embassy_rp::pio_instr_util::set_pindir(&mut sm0, 0b1);
sm0.set_set_pins(&[&db4, &db5, &db6, &db7]);
embassy_rp::pio_instr_util::set_pindir(&mut sm0, 0b11111);
sm0.set_pin_dirs(Direction::Out, &[&rs, &rw, &e, &db4, &db5, &db6, &db7]);
let relocated = RelocatedProgram::new(&prg.program);
sm0.use_program(&common.load_program(&relocated), &[&e]);