From 2071c8485241e0b95de891e8855542d7c51915ab Mon Sep 17 00:00:00 2001 From: "Matthias P. Braendli" Date: Sat, 20 Mar 2021 11:45:23 +0100 Subject: Create eval-clock-cw-tx sw --- sw/eval-clock-cw-tx/src/main.rs | 367 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 367 insertions(+) create mode 100644 sw/eval-clock-cw-tx/src/main.rs (limited to 'sw/eval-clock-cw-tx/src/main.rs') diff --git a/sw/eval-clock-cw-tx/src/main.rs b/sw/eval-clock-cw-tx/src/main.rs new file mode 100644 index 0000000..4d2dae5 --- /dev/null +++ b/sw/eval-clock-cw-tx/src/main.rs @@ -0,0 +1,367 @@ +/* + The MIT License (MIT) + + Copyright (c) 2021 Matthias P. Braendli + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in all + copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + SOFTWARE. +*/ + +#![no_main] +#![no_std] + +use core::mem::MaybeUninit; +use cortex_m_rt::ExceptionFrame; +use cortex_m_semihosting::hprintln; +use panic_semihosting as _; + +use stm32f1xx_hal::{ + prelude::*, + pac, + pac::interrupt, + i2c, + gpio, + delay::Delay, + timer::{CountDownTimer, Timer, Event}, + qei::QeiOptions, +}; + +use embedded_hal::digital::v2::OutputPin; +use embedded_hal::digital::v2::InputPin; +use hd44780_driver::{Cursor, CursorBlink, Display, DisplayMode, HD44780}; + +pub mod ui; +pub mod cw; +pub mod state; +pub mod si_clock; +pub mod log10f; + +use state::*; + +const TICKS_PER_SECOND : u32 = 100; + +struct SharedWithISR { + state : State, + last_sequence_state_change : u32, + cw_ptt_timestamp : u32, + cw_key_n : gpio::gpioa::PA15>, + ui : ui::UI, + cw_pwm: cw::CWPWM, + cw_keyer: cw::Keyer, + cw_paddle_tip: gpio::gpiob::PB8>, + cw_paddle_ring: gpio::gpiob::PB9>, + ptt_out_n: gpio::gpiob::PB3>, + led : gpio::gpiob::PB14>, +} + +static mut SHARED: MaybeUninit = MaybeUninit::uninit(); +static mut CLOCK_TIMER: MaybeUninit> = MaybeUninit::uninit(); +static mut TICK_COUNTER: MaybeUninit = MaybeUninit::uninit(); + +fn ticks_now() -> u32 { + cortex_m::interrupt::free(|_cs| unsafe { *TICK_COUNTER.as_ptr() }) +} + +fn get_state_copy() -> State { + cortex_m::interrupt::free(|_cs| unsafe { + (*SHARED.as_ptr()).state.clone() + }) +} + +#[cortex_m_rt::entry] +fn main() -> ! { + let cp = cortex_m::Peripherals::take().unwrap(); + let dp = pac::Peripherals::take().unwrap(); + + let mut flash = dp.FLASH.constrain(); + let mut rcc = dp.RCC.constrain(); + let mut afio = dp.AFIO.constrain(&mut rcc.apb2); + let clocks = rcc.cfgr + .adcclk(2.mhz()) + .freeze(&mut flash.acr); + let mut delay = Delay::new(cp.SYST, clocks); + + delay.delay_ms(200u16); + + let mut gpioa = dp.GPIOA.split(&mut rcc.apb2); + let mut gpiob = dp.GPIOB.split(&mut rcc.apb2); + let mut gpioc = dp.GPIOC.split(&mut rcc.apb2); + + // Buttons as analog inputs (multi-level) + let pb0 = gpiob.pb0.into_floating_input(&mut gpiob.crl); // BTN1 Button B, has external pullup + let pb1 = gpiob.pb1.into_floating_input(&mut gpiob.crl); // BTN0 Button A, has external pullup + let pb12 = gpiob.pb12.into_pull_up_input(&mut gpiob.crh); // BTN2 Button C + let pb13 = gpiob.pb13.into_pull_up_input(&mut gpiob.crh); // BTN3 Button D + let pc15 = gpioc.pc15.into_pull_up_input(&mut gpioc.crh); // Encoder button + let ui = ui::UI::new(pb0, pb1, pb12, pb13, pc15); + + let cw_pwm = { + let pa8 = gpioa.pa8.into_alternate_push_pull(&mut gpioa.crh); // CW PWM output using TIM1 Ch1 + let tim1 = Timer::tim1(dp.TIM1, &clocks, &mut rcc.apb2); + cw::CWPWM::new(pa8, tim1, &mut afio.mapr) + }; + + let cw_paddle_tip = gpiob.pb8.into_pull_up_input(&mut gpiob.crh); // CW paddle tip + let cw_paddle_ring = gpiob.pb9.into_pull_up_input(&mut gpiob.crh); // CW paddle ring + + // Configure PB14 as output. (LED) + let mut led = gpiob.pb14.into_push_pull_output(&mut gpiob.crh); + led.set_low().unwrap(); + + let (pa15, pb3, _pb4) = afio.mapr.disable_jtag(gpioa.pa15, gpiob.pb3, gpiob.pb4); + let cw_key_n = pa15.into_open_drain_output_with_state(&mut gpioa.crh, gpio::State::High); + let ptt_out_n = pb3.into_push_pull_output_with_state(&mut gpiob.crl, gpio::State::High); + + let c1 = gpioa.pa6; + let c2 = gpioa.pa7; + let qei = Timer::tim3(dp.TIM3, &clocks, &mut rcc.apb1) + .qei((c1, c2), &mut afio.mapr, QeiOptions::default()); + + // Configure I2C1 to be used for Si5351 and display + let scl = gpiob.pb6.into_alternate_open_drain(&mut gpiob.crl); + let sda = gpiob.pb7.into_alternate_open_drain(&mut gpiob.crl); + + let i2c = i2c::BlockingI2c::i2c1( + dp.I2C1, + (scl, sda), + &mut afio.mapr, + i2c::Mode::Standard { + frequency: 100_000.hz(), + }, + clocks, + &mut rcc.apb1, + /* start_timeout_us */ 1000, + /* start_retries */ 10, + /* addr_timeout_us */ 1000, + /* data_timeout_us */ 1000, + ); + let i2c_busmanager = shared_bus::BusManagerSimple::new(i2c); + + const I2C_ADDRESS: u8 = 0b010_0000; // MCP23008, depending on solder bridges + let mut lcd = match HD44780::new_i2c_mcp23008(i2c_busmanager.acquire_i2c(), I2C_ADDRESS, &mut delay) { + Ok(lcd) => lcd, + Err(_) => panic!("HD44780 init fail"), + }; + + lcd.reset(&mut delay).unwrap(); + lcd.clear(&mut delay).unwrap(); + lcd.set_display_mode( + DisplayMode { + display: Display::On, + cursor_visibility: Cursor::Invisible, + cursor_blink: CursorBlink::Off, + }, + &mut delay).unwrap(); + lcd.set_cursor_pos(0, &mut delay).unwrap(); + lcd.write_str(" HB9EGM ", &mut delay).unwrap(); + lcd.set_cursor_pos(40, &mut delay).unwrap(); + lcd.write_str(" 30m CW TX 2021 ", &mut delay).unwrap(); + delay.delay_ms(1_500u16); + + + let mut siclock = { + let shared = unsafe { &mut *SHARED.as_mut_ptr() }; + *shared = SharedWithISR { + state : State::new(), + last_sequence_state_change : 0, + cw_ptt_timestamp : 0, + cw_key_n, + ui, + cw_pwm, + cw_keyer : cw::Keyer::new(12, TICKS_PER_SECOND), + cw_paddle_tip, cw_paddle_ring, ptt_out_n, led + }; + + si_clock::SiClock::new(i2c_busmanager.acquire_i2c(), 0, shared.state.vfo()) + }; + + ui::update_disp(&mut lcd, &get_state_copy(), &mut delay); + + let mut last_encoder_count = qei.count(); + + { + let ticks = unsafe { &mut *TICK_COUNTER.as_mut_ptr() }; + *ticks = 0; + } + + { + let timer = unsafe { &mut *CLOCK_TIMER.as_mut_ptr() }; + *timer = Timer::tim2(dp.TIM2, &clocks, &mut rcc.apb1) + .start_count_down(TICKS_PER_SECOND.hz()); + timer.listen(Event::Update); + } + + unsafe { pac::NVIC::unmask(pac::Interrupt::TIM2); } + + let mut last_disp_update_counter = 1; + let mut previous_vfo = 0; + + loop { + let mut update_disp_required = false; + + let state = get_state_copy(); + + let encoder_count : u16 = qei.count(); + if encoder_count != last_encoder_count { + let delta = encoder_count.wrapping_sub(last_encoder_count); + let delta = if delta > 0x7FFF { delta as i32 - 0x10000 } else { delta as i32 }; + + cortex_m::interrupt::free(|_cs| { + let shared = unsafe { &mut *SHARED.as_mut_ptr() }; + shared.ui.update_encoder(&mut shared.state, delta); + if let Mode::CW(CWMode::Iambic) = shared.state.mode { + shared.cw_keyer.set_speed(shared.state.cw_wpm, TICKS_PER_SECOND) + } + }); + + siclock.set_vfo(state.vfo()); + update_disp_required = true; + } + + let vfo = state.vfo(); + if previous_vfo != vfo { + siclock.set_vfo(vfo); + } + previous_vfo = vfo; + + if last_disp_update_counter != state.update_disp_counter { + update_disp_required = true; + last_disp_update_counter = state.update_disp_counter; + } + + if update_disp_required { + ui::update_disp(&mut lcd, &state, &mut delay); + } + + last_encoder_count = encoder_count; + + cortex_m::asm::wfi(); + } +} + +#[interrupt] +fn TIM2() { + let timer = unsafe { &mut *CLOCK_TIMER.as_mut_ptr() }; + timer.clear_update_interrupt_flag(); + + let ticks = unsafe { &mut *TICK_COUNTER.as_mut_ptr() }; + *ticks += 1; + + let mut shared = unsafe { &mut *SHARED.as_mut_ptr() }; + let button_result = shared.ui.handle_buttons(&mut shared.state); + + if button_result.display_update { + shared.state.update_disp_counter += 1; + } + + let cw_paddle_tip_low = shared.cw_paddle_tip.is_low().unwrap(); + let cw_paddle_ring_low = shared.cw_paddle_ring.is_low().unwrap(); + + let cw_ptt_delay : u32 = TICKS_PER_SECOND * 800 / 1000; + let cw_ptt = match shared.state.mode { + Mode::CW(_) => { + if cw_paddle_tip_low || cw_paddle_ring_low { + shared.cw_ptt_timestamp = *ticks; + true + } + else { + shared.cw_ptt_timestamp + cw_ptt_delay > *ticks + } + } + }; + + let cw_beep = match shared.state.mode { + Mode::CW(CWMode::StraightKey) => cw_paddle_tip_low, + Mode::CW(CWMode::Iambic) => shared.cw_keyer.tick(*ticks, cw_paddle_tip_low, cw_paddle_ring_low), + }; + + let next_state = match shared.state.sequence_state { + SequenceState::Rx => { + shared.ptt_out_n.set_high().unwrap(); + if cw_ptt { + SequenceState::SwitchingCW + } + else { + SequenceState::Rx + } + }, + SequenceState::SwitchingCW => { + shared.ptt_out_n.set_low().unwrap(); + if cw_ptt { + SequenceState::TxCW + } + else { + SequenceState::Rx + } + }, + SequenceState::TxCW => { + shared.ptt_out_n.set_low().unwrap(); + if cw_ptt { + SequenceState::TxCW + } + else { + SequenceState::SwitchingCW + } + }, + }; + + match shared.state.sequence_state { + SequenceState::TxCW => { + if cw_beep { + shared.led.set_low().unwrap(); + shared.cw_pwm.on(); + shared.cw_key_n.set_low().unwrap(); + } + else { + shared.led.set_high().unwrap(); + shared.cw_pwm.off(); + shared.cw_key_n.set_high().unwrap(); + } + }, + _ => { + shared.led.set_high().unwrap(); + shared.cw_pwm.off(); + shared.cw_key_n.set_high().unwrap(); + }, + } + + const SWITCHING_DELAY : u32 = TICKS_PER_SECOND * 80 / 1000; + if shared.state.sequence_state != next_state && + shared.last_sequence_state_change + SWITCHING_DELAY <= *ticks { + shared.state.sequence_state = next_state; + shared.last_sequence_state_change = *ticks; + } +} + +#[cortex_m_rt::exception] +fn HardFault(ef: &ExceptionFrame) -> ! { + let periph = unsafe { cortex_m::Peripherals::steal() }; + let hfsr = periph.SCB.hfsr.read(); + let cfsr = periph.SCB.cfsr.read(); + + hprintln!("Hardfault {:x} {:x} at {:x}\n", hfsr, cfsr, ef.pc).unwrap(); + cortex_m::asm::bkpt(); + loop { } +} + +#[cortex_m_rt::exception] +fn DefaultHandler(irqn: i16) { + hprintln!("Unhandled exception (IRQn = {})", irqn).unwrap(); + cortex_m::asm::bkpt(); + loop { } +} -- cgit v1.2.3