Reduce use of the full `futures` crate.

5 files changed, 6 insertions, 5 deletions

diff --git a/examples/stm32f4/Cargo.toml b/examples/stm32f4/Cargo.toml
index e6a9141e7..64ac50818 100644
--- a/examples/stm32f4/Cargo.toml
+++ b/examples/stm32f4/Cargo.toml
@@ -12,6 +12,7 @@ embassy-executor = { version = "0.5.0", path = "../../embassy-executor", feature
 embassy-time = { version = "0.3.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
 embassy-usb = { version = "0.2.0", path = "../../embassy-usb", features = ["defmt" ] }
 embassy-net = { version = "0.4.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", ] }
+embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
 
 defmt = "0.3"
 defmt-rtt = "0.4"
@@ -22,7 +23,7 @@ embedded-hal = "0.2.6"
 embedded-io = { version = "0.6.0" }
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
-futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
+futures-util = { version = "0.3.30", default-features = false }
 heapless = { version = "0.8", default-features = false }
 nb = "1.0.0"
 embedded-storage = "0.3.1"
diff --git a/examples/stm32f4/src/bin/i2c_comparison.rs b/examples/stm32f4/src/bin/i2c_comparison.rs
index 30cfbdf57..55c4891e3 100644
--- a/examples/stm32f4/src/bin/i2c_comparison.rs
+++ b/examples/stm32f4/src/bin/i2c_comparison.rs
@@ -13,7 +13,7 @@ use embassy_stm32::i2c::I2c;
 use embassy_stm32::time::Hertz;
 use embassy_stm32::{bind_interrupts, i2c, peripherals};
 use embassy_time::Instant;
-use futures::future::try_join3;
+use futures_util::future::try_join3;
 use {defmt_rtt as _, panic_probe as _};
 
 const ADDRESS: u8 = 96;
diff --git a/examples/stm32f4/src/bin/usb_hid_keyboard.rs b/examples/stm32f4/src/bin/usb_hid_keyboard.rs
index d48ae4a17..de9b692b1 100644
--- a/examples/stm32f4/src/bin/usb_hid_keyboard.rs
+++ b/examples/stm32f4/src/bin/usb_hid_keyboard.rs
@@ -5,6 +5,7 @@ use core::sync::atomic::{AtomicBool, Ordering};
 
 use defmt::*;
 use embassy_executor::Spawner;
+use embassy_futures::join::join;
 use embassy_stm32::exti::ExtiInput;
 use embassy_stm32::gpio::Pull;
 use embassy_stm32::time::Hertz;
@@ -13,7 +14,6 @@ use embassy_stm32::{bind_interrupts, peripherals, usb, Config};
 use embassy_usb::class::hid::{HidReaderWriter, ReportId, RequestHandler, State};
 use embassy_usb::control::OutResponse;
 use embassy_usb::{Builder, Handler};
-use futures::future::join;
 use usbd_hid::descriptor::{KeyboardReport, SerializedDescriptor};
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32f4/src/bin/usb_hid_mouse.rs b/examples/stm32f4/src/bin/usb_hid_mouse.rs
index c35f4b002..d15ad52dc 100644
--- a/examples/stm32f4/src/bin/usb_hid_mouse.rs
+++ b/examples/stm32f4/src/bin/usb_hid_mouse.rs
@@ -3,6 +3,7 @@
 
 use defmt::*;
 use embassy_executor::Spawner;
+use embassy_futures::join::join;
 use embassy_stm32::time::Hertz;
 use embassy_stm32::usb::Driver;
 use embassy_stm32::{bind_interrupts, peripherals, usb, Config};
@@ -10,7 +11,6 @@ use embassy_time::Timer;
 use embassy_usb::class::hid::{HidWriter, ReportId, RequestHandler, State};
 use embassy_usb::control::OutResponse;
 use embassy_usb::Builder;
-use futures::future::join;
 use usbd_hid::descriptor::{MouseReport, SerializedDescriptor};
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32f4/src/bin/usb_serial.rs b/examples/stm32f4/src/bin/usb_serial.rs
index 25806dd85..91cfae87b 100644
--- a/examples/stm32f4/src/bin/usb_serial.rs
+++ b/examples/stm32f4/src/bin/usb_serial.rs
@@ -3,13 +3,13 @@
 
 use defmt::{panic, *};
 use embassy_executor::Spawner;
+use embassy_futures::join::join;
 use embassy_stm32::time::Hertz;
 use embassy_stm32::usb::{Driver, Instance};
 use embassy_stm32::{bind_interrupts, peripherals, usb, Config};
 use embassy_usb::class::cdc_acm::{CdcAcmClass, State};
 use embassy_usb::driver::EndpointError;
 use embassy_usb::Builder;
-use futures::future::join;
 use {defmt_rtt as _, panic_probe as _};
 
 bind_interrupts!(struct Irqs {