lucxjo/pico_mouse_jiggler
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Now jiggles the cursor

Browse source 
Next steps:
 * allow the jiggler to be temporarily disabled
 * illuminate an LED to say in operation

Signed-off-by: Louis Hollingworth <louis@hollingworth.ch>
This commit is contained in:
Louis Hollingworth 2023-06-17 21:27:47 +01:00
parent 18b499cc30
commit c09126ccd7
Signed by: lucxjo
GPG key ID: A11415CB3DC7809B
6 changed files with 658 additions and 2 deletions
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42
.cargo/config Normal file
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@ -0,0 +1,42 @@
#
# Cargo Configuration for the https://github.com/rp-rs/rp-hal.git repository.
#
# Copyright (c) The RP-RS Developers, 2021
#
# You might want to make a similar file in your own repository if you are
# writing programs for Raspberry Silicon microcontrollers.
#
# This file is MIT or Apache-2.0 as per the repository README.md file
#
[build]
# Set the default target to match the Cortex-M0+ in the RP2040
target = "thumbv6m-none-eabi"
# Target specific options
[target.thumbv6m-none-eabi]
# Pass some extra options to rustc, some of which get passed on to the linker.
#
# * linker argument --nmagic turns off page alignment of sections (which saves
# flash space)
# * linker argument -Tlink.x tells the linker to use link.x as the linker
# script. This is usually provided by the cortex-m-rt crate, and by default
# the version in that crate will include a file called `memory.x` which
# describes the particular memory layout for your specific chip.
# * inline-threshold=5 makes the compiler more aggressive and inlining functions
# * no-vectorize-loops turns off the loop vectorizer (seeing as the M0+ doesn't
# have SIMD)
rustflags = [
"-C", "link-arg=--nmagic",
"-C", "link-arg=-Tlink.x",
"-C", "inline-threshold=5",
"-C", "no-vectorize-loops",
]
# This runner will make a UF2 file and then copy it to a mounted RP2040 in USB
# Bootloader mode:
runner = "elf2uf2-rs -d"
# This runner will find a supported SWD debug probe and flash your RP2040 over
# SWD:
# runner = "probe-run --chip RP2040"

2
.cargo/config.toml Normal file
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@ -0,0 +1,2 @@
[target.thumbv6m-none-eabi]
runner = "elf2uf2-rs -d"

428
Cargo.lock generated Normal file
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@ -0,0 +1,428 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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8
Cargo.toml
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@ -6,3 +6,11 @@ edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies] [dependencies]
cortex-m = "0.7.7"
cortex-m-rt = "0.7.3"
critical-section = "1.1.1"
embedded-hal = "0.2.7"
panic-halt = "0.2.0"
rp-pico = "0.7.0"
usb-device= "0.2.9"
usbd-hid = "0.6.1"

15
memory.x Normal file
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@ -0,0 +1,15 @@
MEMORY {
BOOT2 : ORIGIN = 0x10000000, LENGTH = 0x100
FLASH : ORIGIN = 0x10000100, LENGTH = 2048K - 0x100
RAM : ORIGIN = 0x20000000, LENGTH = 256K
}
EXTERN(BOOT2_FIRMWARE)
SECTIONS {
/* ### Boot loader */
.boot2 ORIGIN(BOOT2) :
{
KEEP(*(.boot2));
} > BOOT2
} INSERT BEFORE .text;

165
src/main.rs
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@ -1,3 +1,164 @@
fn main() { #![no_std]
println!("Hello, world!"); #![no_main]
use rp_pico::entry;
use rp_pico::hal::pac::interrupt;
use panic_halt as _;
use rp_pico::hal::prelude::*;
use rp_pico::hal::pac;
use rp_pico::hal;
use usb_device::{class_prelude::*, prelude::*};
use usbd_hid::descriptor::generator_prelude::*;
use usbd_hid::descriptor::MouseReport;
use usbd_hid::hid_class::HIDClass;
use embedded_hal::digital::v2::{InputPin, OutputPin};
/// The USB Device Driver (shared with the interrupt).
static mut USB_DEVICE: Option<UsbDevice<hal::usb::UsbBus>> = None;
/// The USB Bus Driver (shared with the interrupt).
static mut USB_BUS: Option<UsbBusAllocator<hal::usb::UsbBus>> = None;
/// The USB Human Interface Device Driver (shared with the interrupt).
static mut USB_HID: Option<HIDClass<hal::usb::UsbBus>> = None;
#[entry]
fn main() -> ! {
let mut active = true;
let mut pac = pac::Peripherals::take().unwrap();
let mut wd = hal::Watchdog::new(pac.WATCHDOG);
let clocks = hal::clocks::init_clocks_and_plls(
rp_pico::XOSC_CRYSTAL_FREQ,
pac.XOSC,
pac.CLOCKS,
pac.PLL_SYS,
pac.PLL_USB,
&mut pac.RESETS,
&mut wd,
)
.ok()
.unwrap();
let sio = hal::Sio::new(pac.SIO);
let pins = rp_pico::Pins::new(
pac.IO_BANK0,
pac.PADS_BANK0,
sio.gpio_bank0,
&mut pac.RESETS,
);
let usb_bus = UsbBusAllocator::new(hal::usb::UsbBus::new(
pac.USBCTRL_REGS,
pac.USBCTRL_DPRAM,
clocks.usb_clock,
true,
&mut pac.RESETS,
));
unsafe {
// Note (safety): This is safe as interrupts haven't been started yet
USB_BUS = Some(usb_bus);
}
let bus_ref = unsafe { USB_BUS.as_ref().unwrap() };
let usb_hid = HIDClass::new(bus_ref, MouseReport::desc(), 60);
unsafe {
// Note (safety): This is safe as interrupts haven't been started yet.
USB_HID = Some(usb_hid);
}
let usb_dev = UsbDeviceBuilder::new(bus_ref, UsbVidPid(0x16c0, 0x27da))
.manufacturer("Ludoviko")
.product("RPi Pico Mouse")
.serial_number("0x001")
.device_class(0)
.build();
unsafe {
// Note (safety): This is safe as interrupts haven't been started yet
USB_DEVICE = Some(usb_dev);
}
unsafe {
// Enable the USB interrupt
pac::NVIC::unmask(hal::pac::Interrupt::USBCTRL_IRQ);
};
let core = pac::CorePeripherals::take().unwrap();
let mut delay = cortex_m::delay::Delay::new(core.SYST, clocks.system_clock.freq().to_Hz());
let mut led_pin = pins.gpio27.into_push_pull_output();
let button_pin = pins.gpio26.into_pull_up_input();
loop {
if active {
delay.delay_ms(200);
let rep_up = MouseReport {
x: 0,
y: 4,
buttons: 0,
wheel: 0,
pan: 0,
};
push_mouse_movement(rep_up).ok().unwrap_or(0);
delay.delay_ms(200);
let rep_down = MouseReport {
x: 0,
y: -4,
buttons: 0,
wheel: 0,
pan: 0,
};
push_mouse_movement(rep_down).ok().unwrap_or(0);
delay.delay_ms(200);
let rep_left = MouseReport {
x: -10,
y: 0,
buttons: 0,
wheel: 0,
pan: 0,
};
push_mouse_movement(rep_left).ok().unwrap_or(0);
delay.delay_ms(200);
let rep_right = MouseReport {
x: 10,
y: 0,
buttons: 0,
wheel: 0,
pan: 0,
};
push_mouse_movement(rep_right).ok().unwrap_or(0);
delay.delay_ms(500);
}
}
}
fn push_mouse_movement(report: MouseReport) -> Result<usize, usb_device::UsbError> {
critical_section::with(|_| unsafe {
// Now interrupts are disabled, grab the global variable and, if
// available, send it a HID report
USB_HID.as_mut().map(|hid| hid.push_input(&report))
})
.unwrap()
}
#[allow(non_snake_case)]
#[interrupt]
unsafe fn USBCTRL_IRQ() {
// Handle USB request
let usb_dev = USB_DEVICE.as_mut().unwrap();
let usb_hid = USB_HID.as_mut().unwrap();
usb_dev.poll(&mut [usb_hid]);
} }