examples/tcp_stm32f407.rs

@@ -13,6 +13,7 @@ use stm32f4xx_hal::{
     gpio::GpioExt,
     time::U32Ext,
     stm32::ITM,
+    delay::Delay,
     spi::Spi,
     time::Hertz
 };
@@ -27,9 +28,6 @@ use smoltcp::socket::{SocketSet, TcpSocket, TcpSocketBuffer};
 use core::str;
 use core::fmt::Write;
 
-mod delay;
-use delay::AsmDelay;
-
 /// Timer
 use core::cell::RefCell;
 use cortex_m::interrupt::Mutex;
@@ -99,10 +97,6 @@ static mut NET_STORE: NetStorage = NetStorage {
     neighbor_cache: [None; 8],
 };
 
-pub fn delay_ns(time_ns: u32) {
-    cortex_m::asm::delay((time_ns*168_000_000)/1_000_000_000 + 1)
-}
-
 #[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true, monotonic = rtic::cyccnt::CYCCNT)]
 const APP: () = {
     struct Resources {
@@ -130,7 +124,7 @@ const APP: () = {
             .pclk1(42.mhz())
             .require_pll48clk()
             .freeze();
-        let mut asm_delay = AsmDelay::new(clocks.sysclk().0);
+        let mut delay = Delay::new(c.core.SYST, clocks);
 
         // Init ITM
         let mut itm = c.core.ITM;
@@ -150,7 +144,7 @@ const APP: () = {
         // Map SPISEL: see Table 1, NIC100 Manual
         let mut spisel = gpioa.pa1.into_push_pull_output();
         spisel.set_high().unwrap();
-        asm_delay.delay_ms(1_u32);
+        delay.delay_ms(1_u32);
         spisel.set_low().unwrap();
 
         // Create SPI1 for HAL
@@ -217,7 +211,7 @@ const APP: () = {
 
         // Setup SysTick after releasing SYST from Delay
         // Reference to stm32-eth:examples/ip.rs
-        timer_setup(c.core.SYST, clocks);
+        timer_setup(delay.free(), clocks);
         iprintln!(stim0, "Timer initialized");
 
         init::LateResources {

examples/tx_stm32f407.rs

@@ -84,10 +84,10 @@ const APP: () = {
                 Hertz(enc424j600::spi::interfaces::SPI_CLOCK_FREQ),
                 clocks);
 
-            let delay_ns_fp: fn(u32) -> () = |time_ns| {
+            let delay_ns: fn(u32) -> () = |time_ns| {
                 cortex_m::asm::delay((time_ns*21)/125 + 1)
             };
-            enc424j600::SpiEth::new(spi_eth_port, spi1_nss, delay_ns_fp)
+            enc424j600::SpiEth::new(spi_eth_port, spi1_nss, delay_ns)
         };
 
         // Init