mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-05-17 21:44:45 +02:00
Kevin Thomas
96 lines
3.1 KiB
Rust
96 lines
3.1 KiB
Rust
//! @file main.rs
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//! @brief UART demonstration: echo received characters back in uppercase
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//! @author Kevin Thomas
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//! @date 2025
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//!
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//! MIT License
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//!
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//! Copyright (c) 2025 Kevin Thomas
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//!
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//! Permission is hereby granted, free of charge, to any person obtaining a copy
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//! of this software and associated documentation files (the "Software"), to deal
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//! in the Software without restriction, including without limitation the rights
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//! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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//! copies of the Software, and to permit persons to whom the Software is
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//! furnished to do so, subject to the following conditions:
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//!
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//! The above copyright notice and this permission notice shall be included in
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//! all copies or substantial portions of the Software.
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//!
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//! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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//! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//! AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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//! LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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//! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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//! SOFTWARE.
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//!
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//! -----------------------------------------------------------------------------
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//!
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//! Demonstrates hardware UART0 using the uart driver (uart.rs).
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//! Characters typed into a terminal via a USB-to-UART adapter are echoed
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//! back in uppercase, illustrating full-duplex raw UART operation without
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//! going through the stdio layer.
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//!
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//! Wiring:
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//! GPIO0 (TX) -> USB-to-UART adapter RX
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//! GPIO1 (RX) -> USB-to-UART adapter TX
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//! GND -> USB-to-UART adapter GND
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#![no_std]
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#![no_main]
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// Board-level helpers: constants, type aliases, and init functions
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mod board;
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// UART driver module
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mod uart;
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// Debugging output over RTT
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use defmt_rtt as _;
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// Panic handler for RISC-V targets
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#[cfg(target_arch = "riscv32")]
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use panic_halt as _;
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// Panic handler for ARM targets
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#[cfg(target_arch = "arm")]
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use panic_probe as _;
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// HAL entry-point macro
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use hal::entry;
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// Alias our HAL crate
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#[cfg(rp2350)]
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use rp235x_hal as hal;
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#[cfg(rp2040)]
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use rp2040_hal as hal;
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// Second-stage boot loader for RP2040
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#[unsafe(link_section = ".boot2")]
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#[used]
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#[cfg(rp2040)]
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pub static BOOT2: [u8; 256] = rp2040_boot2::BOOT_LOADER_W25Q080;
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// Boot metadata for the RP2350 Boot ROM
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#[unsafe(link_section = ".start_block")]
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#[used]
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#[cfg(rp2350)]
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pub static IMAGE_DEF: hal::block::ImageDef = hal::block::ImageDef::secure_exe();
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/// Application entry point for the UART uppercase echo demo.
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#[entry]
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fn main() -> ! {
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board::run(hal::pac::Peripherals::take().unwrap())
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}
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// Picotool binary info metadata
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#[unsafe(link_section = ".bi_entries")]
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#[used]
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pub static PICOTOOL_ENTRIES: [hal::binary_info::EntryAddr; 5] = [
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hal::binary_info::rp_cargo_bin_name!(),
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hal::binary_info::rp_cargo_version!(),
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hal::binary_info::rp_program_description!(c"UART Uppercase Echo"),
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hal::binary_info::rp_cargo_homepage_url!(),
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hal::binary_info::rp_program_build_attribute!(),
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];
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// End of file
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