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Remove code setting IC_DATA_CMD.RESTART bit #827

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Remove code setting IC_DATA_CMD.RESTART bit #827

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16fc26c
Remove code setting IC_DATA_CMD.RESTART bit
jannic Aug 15, 2024
82f076e
Increase rtt buffer size for on-target tests
jannic Aug 15, 2024
5046f14
Fix on-target tests
jannic Aug 25, 2024
e7c6d14
Also apply changes to rp235x-hal
jannic Aug 25, 2024
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1 change: 1 addition & 0 deletions on-target-tests/run_tests.bat
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Original file line number Diff line number Diff line change
Expand Up @@ -2,5 +2,6 @@
@rem We need to specify environment variables here to control build since we aren't able to override them in Cargo.toml

@SET "CARGO_TARGET_THUMBV6M_NONE_EABI_RUNNER=probe-rs run"
@SET "DEFMT_RTT_BUFFER_SIZE=4096"

cargo test --no-fail-fast -- --chip rp2040
2 changes: 1 addition & 1 deletion on-target-tests/run_tests.sh
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Expand Up @@ -3,4 +3,4 @@
# Keep running tests even if one of them fails
# We need to specify probe-rs as our runner via environment variables here
# to control build since we aren't able to override them in config.toml
CARGO_TARGET_THUMBV6M_NONE_EABI_RUNNER="probe-rs run" cargo test --no-fail-fast -- --chip rp2040
DEFMT_RTT_BUFFER_SIZE=4096 CARGO_TARGET_THUMBV6M_NONE_EABI_RUNNER="probe-rs run" cargo test --no-fail-fast -- --chip rp2040
13 changes: 7 additions & 6 deletions on-target-tests/tests/i2c_loopback.rs
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Expand Up @@ -59,13 +59,13 @@ mod tests {
#[test]
fn write_iter_read(state: &mut State) {
i2c_tests::blocking::write_iter_read(state, ADDR_7BIT, 1..=1);
i2c_tests::blocking::write_iter_read(state, ADDR_10BIT, 2..=2);
i2c_tests::blocking::write_iter_read(state, ADDR_10BIT, 1..=1);
}

#[test]
fn write_read(state: &mut State) {
i2c_tests::blocking::write_read(state, ADDR_7BIT, 1..=1);
i2c_tests::blocking::write_read(state, ADDR_10BIT, 2..=2);
i2c_tests::blocking::write_read(state, ADDR_10BIT, 1..=1);
}

#[test]
Expand All @@ -89,25 +89,26 @@ mod tests {
#[test]
fn transactions_read_write(state: &mut State) {
i2c_tests::blocking::transactions_read_write(state, ADDR_7BIT, 1..=1);
// An initial read in 10 bit mode contains an implicit restart condition
i2c_tests::blocking::transactions_read_write(state, ADDR_10BIT, 2..=2);
}

#[test]
fn transactions_write_read(state: &mut State) {
i2c_tests::blocking::transactions_write_read(state, ADDR_7BIT, 1..=1);
i2c_tests::blocking::transactions_write_read(state, ADDR_10BIT, 2..=2);
i2c_tests::blocking::transactions_write_read(state, ADDR_10BIT, 1..=1);
}

#[test]
fn transaction(state: &mut State) {
i2c_tests::blocking::transaction(state, ADDR_7BIT, 7..=9);
i2c_tests::blocking::transaction(state, ADDR_10BIT, 7..=9);
i2c_tests::blocking::transaction(state, ADDR_7BIT, 5..=5);
i2c_tests::blocking::transaction(state, ADDR_10BIT, 5..=5);
}

#[test]
fn transactions_iter(state: &mut State) {
i2c_tests::blocking::transactions_iter(state, ADDR_7BIT, 1..=1);
i2c_tests::blocking::transactions_iter(state, ADDR_10BIT, 2..=2);
i2c_tests::blocking::transactions_iter(state, ADDR_10BIT, 1..=1);
}

#[test]
Expand Down
4 changes: 2 additions & 2 deletions on-target-tests/tests/i2c_loopback_async.rs
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Expand Up @@ -60,8 +60,8 @@ mod tests {

#[test]
fn transactions_iter(state: &mut State) {
run_test(non_blocking::transaction(state, ADDR_7BIT, 7..=9));
run_test(non_blocking::transaction(state, ADDR_10BIT, 7..=14));
run_test(non_blocking::transaction(state, ADDR_7BIT, 5..=5));
run_test(non_blocking::transaction(state, ADDR_10BIT, 5..=5));
}

#[test]
Expand Down
23 changes: 14 additions & 9 deletions on-target-tests/tests/i2c_tests/blocking.rs
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Expand Up @@ -330,7 +330,7 @@ pub fn transactions_read_write<T: ValidAddress>(
restart_count: RangeInclusive<u32>,
) {
use embedded_hal::i2c::{I2c, Operation};
let controller = reset(state, addr, true);
let controller = reset(state, addr, false);

let samples_seq: FIFOBuffer = Generator::seq().take(25).collect();
let samples_fib: FIFOBuffer = Generator::fib().take(25).collect();
Expand Down Expand Up @@ -381,25 +381,25 @@ pub fn transaction<T: ValidAddress>(
// does not "waste" bytes that would be discarded otherwise.
//
// One down side of this is that the Target implementation is unable to detect restarts
// between consicutive write operations
// between consecutive write operations
use embedded_hal::i2c::{I2c, Operation};
let controller = reset(state, addr, true);
let controller = reset(state, addr, false);

let mut v = ([0u8; 14], [0u8; 25], [0u8; 25], [0u8; 14], [0u8; 14]);
let samples: FIFOBuffer = Generator::seq().take(25).collect();
controller
.transaction(
addr,
&mut [
Operation::Write(&samples), // goes to v2
Operation::Write(&samples),
Operation::Read(&mut v.0),
Operation::Read(&mut v.1),
Operation::Read(&mut v.2),
Operation::Write(&samples), // goes to v3
Operation::Write(&samples),
Operation::Read(&mut v.3),
Operation::Write(&samples), // goes to v4
Operation::Write(&samples), // remains in buffer
Operation::Write(&samples), // remains in buffer
Operation::Write(&samples),
Operation::Write(&samples),
Operation::Write(&samples),
Operation::Read(&mut v.4),
],
)
Expand All @@ -423,7 +423,12 @@ pub fn transaction<T: ValidAddress>(
assert_vec_eq!(e);

// assert reads
let g: FIFOBuffer = Generator::seq().take(92).collect();
let g: FIFOBuffer = itertools::chain!(
Generator::seq().take(14 + 25 + 25),
Generator::fib().take(14),
Generator::seq().take(14),
)
.collect();
let h: FIFOBuffer = itertools::chain!(
v.0.into_iter(),
v.1.into_iter(),
Expand Down
5 changes: 4 additions & 1 deletion on-target-tests/tests/i2c_tests/mod.rs
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Expand Up @@ -100,7 +100,10 @@ fn target_handler(
} = payload;
match evt {
Event::Start => *first = true,
Event::Restart => *restart_cnt += 1,
Event::Restart => {
*first = true;
*restart_cnt += 1;
}
Event::TransferRead => {
let n = throttle.then_some(1).unwrap_or(target.tx_fifo_available());
let v: FIFOBuffer = gen.take(n.into()).collect();
Expand Down
8 changes: 3 additions & 5 deletions on-target-tests/tests/i2c_tests/non_blocking.rs
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Expand Up @@ -342,11 +342,9 @@ pub async fn transaction<A: ValidAddress>(
assert_eq!(e, state.payload.borrow().vec);
// assert reads
let g: FIFOBuffer = itertools::chain!(
Generator::fib().take(25),
Generator::fib().skip(32).take(25),
Generator::fib().skip(64).take(25),
Generator::fib().skip(96).take(14),
Generator::fib().skip(112).take(14),
Generator::fib().take(25 * 3),
Generator::seq().take(14),
Generator::fib().take(14),
)
.collect();
let h: FIFOBuffer = itertools::chain!(
Expand Down
15 changes: 0 additions & 15 deletions rp2040-hal/src/i2c/controller.rs
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Expand Up @@ -227,21 +227,13 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
)?;

let lastindex = buffer.len() - 1;
let mut first_byte = true;
for (i, byte) in buffer.iter_mut().enumerate() {
let last_byte = i == lastindex;

// wait until there is space in the FIFO to write the next byte
while self.i2c.ic_status().read().tfnf().bit_is_clear() {}

self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}

w.stop().bit(do_stop && last_byte);
w.cmd().read()
});
Expand Down Expand Up @@ -270,7 +262,6 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
)?;

let mut abort_reason = Ok(());
let mut first_byte = true;
'outer: while let Some(byte) = peekable.next() {
if self.tx_fifo_full() {
// wait for more room in the fifo
Expand All @@ -289,12 +280,6 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
// else enqueue
let last = peekable.peek().is_none();
self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}
w.stop().bit(do_stop && last);
unsafe { w.dat().bits(byte) }
});
Expand Down
15 changes: 0 additions & 15 deletions rp2040-hal/src/i2c/controller/non_blocking.rs
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Expand Up @@ -120,7 +120,6 @@ where
)?;

let lastindex = buffer.len() - 1;
let mut first_byte = true;
for (i, byte) in buffer.iter_mut().enumerate() {
let last_byte = i == lastindex;

Expand All @@ -135,13 +134,6 @@ where
.await;

self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}

w.stop().bit(do_stop && last_byte);
w.cmd().read()
});
Expand Down Expand Up @@ -174,7 +166,6 @@ where
)?;

let mut abort_reason = Ok(());
let mut first_byte = true;
while let Some(byte) = peekable.next() {
if self.tx_fifo_full() {
// wait for more room in the fifo
Expand All @@ -193,12 +184,6 @@ where
// else enqueue
let last = peekable.peek().is_none();
self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}
w.stop().bit(do_stop && last);
unsafe { w.dat().bits(byte) }
});
Expand Down
15 changes: 0 additions & 15 deletions rp235x-hal/src/i2c/controller.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -227,21 +227,13 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
)?;

let lastindex = buffer.len() - 1;
let mut first_byte = true;
for (i, byte) in buffer.iter_mut().enumerate() {
let last_byte = i == lastindex;

// wait until there is space in the FIFO to write the next byte
while self.i2c.ic_status().read().tfnf().bit_is_clear() {}

self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}

w.stop().bit(do_stop && last_byte);
w.cmd().read()
});
Expand Down Expand Up @@ -270,7 +262,6 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
)?;

let mut abort_reason = Ok(());
let mut first_byte = true;
'outer: while let Some(byte) = peekable.next() {
if self.tx_fifo_full() {
// wait for more room in the fifo
Expand All @@ -289,12 +280,6 @@ impl<T: Deref<Target = Block>, PINS> I2C<T, PINS, Controller> {
// else enqueue
let last = peekable.peek().is_none();
self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}
w.stop().bit(do_stop && last);
unsafe { w.dat().bits(byte) }
});
Expand Down
15 changes: 0 additions & 15 deletions rp235x-hal/src/i2c/controller/non_blocking.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,6 @@ where
)?;

let lastindex = buffer.len() - 1;
let mut first_byte = true;
for (i, byte) in buffer.iter_mut().enumerate() {
let last_byte = i == lastindex;

Expand All @@ -135,13 +134,6 @@ where
.await;

self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}

w.stop().bit(do_stop && last_byte);
w.cmd().read()
});
Expand Down Expand Up @@ -174,7 +166,6 @@ where
)?;

let mut abort_reason = Ok(());
let mut first_byte = true;
while let Some(byte) = peekable.next() {
if self.tx_fifo_full() {
// wait for more room in the fifo
Expand All @@ -193,12 +184,6 @@ where
// else enqueue
let last = peekable.peek().is_none();
self.i2c.ic_data_cmd().write(|w| {
if first_byte {
if !first_transaction {
w.restart().enable();
}
first_byte = false;
}
w.stop().bit(do_stop && last);
unsafe { w.dat().bits(byte) }
});
Expand Down