Merge pull request #104 from CBJamo/master

Bump embedded-hal to rc 2

Author: eldruin

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Changed
+- Updated to `embedded-hal` `1.0.0-rc.2` release ([API changes](https://github.com/rust-embedded/embedded-hal/blob/master/embedded-hal/CHANGELOG.md#v100-rc2---2023-11-28))
+- Updated to `embedded-hal-nb` `1.0.0-rc.2` release ([API changes](https://github.com/rust-embedded/embedded-hal/blob/master/embedded-hal-nb/CHANGELOG.md#v100-rc2---2023-11-28))
+
+
 ## [v0.4.0-alpha.4] - 2023-11-10
 
 ### Changed

Cargo.toml

@@ -22,8 +22,8 @@ spi = ["spidev"]
 default = [ "gpio_cdev", "gpio_sysfs", "i2c", "spi" ]
 
 [dependencies]
-embedded-hal = "=1.0.0-rc.1"
-embedded-hal-nb = "=1.0.0-rc.1"
+embedded-hal = "=1.0.0-rc.2"
+embedded-hal-nb = "=1.0.0-rc.2"
 gpio-cdev = { version = "0.5.1", optional = true }
 sysfs_gpio = { version = "0.6.1", optional = true }
 i2cdev = { version = "0.6.0", optional = true }

src/delay.rs

@@ -3,18 +3,15 @@
 //! [`embedded-hal`]: https://docs.rs/embedded-hal
 
 use cast::u64;
-use embedded_hal::delay::DelayUs;
+use embedded_hal::delay::DelayNs;
 use std::thread;
 use std::time::Duration;
 
 /// Empty struct that provides delay functionality on top of `thread::sleep`
 pub struct Delay;
 
-impl DelayUs for Delay {
-    fn delay_us(&mut self, n: u32) {
-        let secs = n / 1_000_000;
-        let nsecs = (n % 1_000_000) * 1_000;
-
-        thread::sleep(Duration::new(u64(secs), nsecs));
+impl DelayNs for Delay {
+    fn delay_ns(&mut self, n: u32) {
+        thread::sleep(Duration::from_nanos(u64(n)));
     }
 }

src/spi.rs

@@ -220,8 +220,19 @@ mod embedded_hal_impl {
                         };
                         transfers.push(SpidevTransfer::read_write(tx, buf));
                     }
-                    SpiOperation::DelayUs(us) => {
-                        let us = (*us).try_into().unwrap_or(u16::MAX);
+                    SpiOperation::DelayNs(ns) => {
+                        let us = {
+                            if *ns == 0 {
+                                0
+                            } else {
+                                let us = *ns / 1000;
+                                if us == 0 {
+                                    1
+                                } else {
+                                    (us).try_into().unwrap_or(u16::MAX)
+                                }
+                            }
+                        };
                         transfers.push(SpidevTransfer::delay(us));
                     }
                 }