simple pwm added

.cargo/config

@@ -34,8 +34,8 @@ rustflags = [
 # Pick ONE of these compilation targets
 # target = "thumbv6m-none-eabi"        # Cortex-M0 and Cortex-M0+
 # target = "thumbv7m-none-eabi"        # Cortex-M3
-target = "thumbv7em-none-eabi"       # Cortex-M4 and Cortex-M7 (no FPU)
-# target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
+# target = "thumbv7em-none-eabi"       # Cortex-M4 and Cortex-M7 (no FPU)
+target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
 # target = "thumbv8m.base-none-eabi"   # Cortex-M23
 # target = "thumbv8m.main-none-eabi"   # Cortex-M33 (no FPU)
 # target = "thumbv8m.main-none-eabihf" # Cortex-M33 (with FPU)

Cargo.toml

@@ -39,6 +39,7 @@ features = ["stm32f411", "rt"]
 [dependencies.stm32f4xx-hal]
 version = "0.8.3"
 features = ["rt", "stm32f411", "usb_fs"] 
+git = "https://github.com/stm32-rs/stm32f4xx-hal"
 
 # this lets you use `cargo fix`!
 [[bin]]

README.md

@@ -2,20 +2,31 @@
 
 ## Resources
 
-- [UM1724 - stm32 Nucleo-64](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf)
-
-- [RM0383 - F411 Reference Manual](https://www.st.com/resource/zh/reference_manual/dm00119316-stm32f411xce-advanced-armbased-32bit-mcus-stmicroelectronics.pdf) and [RM0368 - F401 Reference Manual](https://www.st.com/resource/en/reference_manual/dm00096844-stm32f401xbc-and-stm32f401xde-advanced-armbased-32bit-mcus-stmicroelectronics.pdf)
-
+- Nucleo 64
+  - [UM1724 - stm32 Nucleo-64](https://www.st.com/resource/en/user_manual/dm00105823-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf).
   - [Nucleo 64 Schematics](https://www.st.com/resource/en/schematic_pack/nucleo_64pins_sch.zip) (The file MB1136.pdf is the schematics in pdf.)
+  - [stm32f4xx_hal](https://docs.rs/stm32f4xx-hal/0.8.3/stm32f4xx_hal/) documentation of the HAL API, and [git repository](https://github.com/stm32-rs/stm32f4xx-hal).
+
 
+- STM32F01/FO11
+  - [RM0383 - F411 Reference Manual](https://www.st.com/resource/zh/reference_manual/dm00119316-stm32f411xce-advanced-armbased-32bit-mcus-stmicroelectronics.pdf) 
+  - [RM0368 - F401 Reference Manual](https://www.st.com/resource/en/reference_manual/dm00096844-stm32f401xbc-and-stm32f401xde-advanced-armbased-32bit-mcus-stmicroelectronics.pdf)
   - [PM0214 - M4 Programming manual](https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjOtd645OTtAhXEHXcKHdwYCoQQFjAAegQIBhAC&url=https%3A%2F%2Fwww.st.com%2Fresource%2Fen%2Fprogramming_manual%2Fdm00046982-stm32-cortex-m4-mcus-and-mpus-programming-manual-stmicroelectronics.pdf&usg=AOvVaw0n3XXybtMMDbifhDZse1Pl)
 
+- PixArt PMW33xx Optical Navigation Chip
   - [PMW3389DM-T3QU](https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwicx5OA9eTtAhWC-yoKHVfKAJ0QFjAAegQIBhAC&url=https%3A%2F%2Fwww.pixart.com%2F_getfs.php%3Ftb%3Dproduct%26id%3D4%26fs%3Dck2_fs_cn&usg=AOvVaw1A1rR533Pt-7EgnVSS-_ch), optical navigation chip
-
   - [Jack Enterprise Breakout Board](https://www.tindie.com/products/jkicklighter/pmw3389-motion-sensor/), an example design with software linked.
 
+- General Embedded
   - [Introduction to SPI](https://www.analog.com/en/analog-dialogue/articles/introduction-to-spi-interface.html#), a short introduction to the SPI interface.
 
+
+
+
+---
+
+## Connections
+
 - [USB Cable]
 
 | Signl | Color | Pin  |

examples/rtic_blinky.rs

@@ -5,7 +5,7 @@
 
 use cortex_m::peripheral::DWT;
 use cortex_m_semihosting::hprintln;
-use panic_halt as _;
+use panic_rtt_target as _;
 use rtic::cyccnt::{Instant, U32Ext as _};
 use stm32f4xx_hal::stm32;
 

examples/rtt-pwm.rs

+//! examples/rtt_timing.rs
+//! cargo run --examples rtt-pwm
+
+#![deny(unsafe_code)]
+// #![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use cortex_m::{asm, peripheral::DWT};
+use panic_halt as _;
+use rtt_target::{rprintln, rtt_init_print};
+use stm32f4xx_hal::{dma, gpio::Speed, prelude::*, pwm, stm32};
+
+#[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true)]
+const APP: () = {
+    #[init]
+    fn init(mut cx: init::Context) {
+        rtt_init_print!();
+        rprintln!("init");
+        let dp = cx.device;
+
+        // Initialize (enable) the monotonic timer (CYCCNT)
+        cx.core.DCB.enable_trace();
+        cx.core.DWT.enable_cycle_counter();
+
+        // Set up the system clock. 16 MHz?
+        let rcc = dp.RCC.constrain();
+        let clocks = rcc.cfgr.freeze();
+
+        let gpioa = dp.GPIOA.split();
+        let channels = (
+            gpioa.pa8.into_alternate_af1().set_speed(Speed::Low),
+            gpioa.pa9.into_alternate_af1(),
+        );
+
+        let pwm = pwm::tim1(dp.TIM1, channels, clocks, 1u32.khz());
+        let (mut ch1, mut ch2) = pwm;
+        let max_duty = ch1.get_max_duty();
+        rprintln!("max_duty {}", max_duty);
+        ch1.set_duty(max_duty / 2);
+        ch1.enable();
+        ch2.set_duty((max_duty * 1) / 2);
+        ch2.enable();
+    }
+
+    #[idle]
+    fn idle(_cx: idle::Context) -> ! {
+        rprintln!("idle");
+        loop {
+            continue;
+        }
+    }
+};

examples/rtt-timing.rs

 //! examples/rtt_timing.rs
+//! cargo run --examples rtt-timing
 
 #![deny(unsafe_code)]
 #![deny(warnings)]

openocd.cfg

-# Sample OpenOCD configuration for the STM32F3DISCOVERY development board
+# Sample OpenOCD configuration for the STM Nucleo-F401RE/F411RE development board
 
 # Depending on the hardware revision you got you'll have to pick ONE of these
 # interfaces. At any time only one interface should be commented out.

openocd.gdb

@@ -32,7 +32,7 @@ monitor tpiu config internal itm.txt uart off 16000000
 # monitor tpiu config external uart off 8000000 2000000
 
 # # enable ITM port 0
-# monitor itm port 0 on
+monitor itm port 0 on
 
 load