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embassy-stm32

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embassy_stm32

Module tsc

Source
Expand description

TSC Peripheral Interface

§Example (stm32)

ⓘ

let mut device_config = embassy_stm32::Config::default();
{
    device_config.rcc.mux = ClockSrc::MSI(Msirange::RANGE_4MHZ);
}

let context = embassy_stm32::init(device_config);

let config = tsc::Config {
    ct_pulse_high_length: ChargeTransferPulseCycle::_2,
    ct_pulse_low_length: ChargeTransferPulseCycle::_2,
    spread_spectrum: false,
    spread_spectrum_deviation: SSDeviation::new(2).unwrap(),
    spread_spectrum_prescaler: false,
    pulse_generator_prescaler: PGPrescalerDivider::_4,
    max_count_value: MaxCount::_8191,
    io_default_mode: false,
    synchro_pin_polarity: false,
    acquisition_mode: false,
    max_count_interrupt: false,
    channel_ios: TscIOPin::Group2Io2 | TscIOPin::Group7Io3,
    shield_ios: TscIOPin::Group1Io3.into(),
    sampling_ios: TscIOPin::Group1Io2 | TscIOPin::Group2Io1 | TscIOPin::Group7Io2,
};

let mut g1: PinGroup<embassy_stm32::peripherals::TSC, G1> = PinGroup::new();
g1.set_io2(context.PB13, PinType::Sample);
g1.set_io3(context.PB14, PinType::Shield);

let mut g2: PinGroup<embassy_stm32::peripherals::TSC, G2> = PinGroup::new();
g2.set_io1(context.PB4, PinType::Sample);
g2.set_io2(context.PB5, PinType::Channel);

let mut g7: PinGroup<embassy_stm32::peripherals::TSC, G7> = PinGroup::new();
g7.set_io2(context.PE3, PinType::Sample);
g7.set_io3(context.PE4, PinType::Channel);

let mut touch_controller = tsc::Tsc::new_blocking(
    context.TSC,
    Some(g1),
    Some(g2),
    None,
    None,
    None,
    None,
    Some(g7),
    None,
    config,
);

touch_controller.discharge_io(true);
Timer::after_millis(1).await;

touch_controller.start();

Re-exports§

Modules§

  • enums
    Enums defined for peripheral parameters

Structs§

  • Config
    Peripheral configuration
  • InterruptHandler
    TSC interrupt handler.
  • PinGroup
    Pin group definition Pins are organized into groups of four IOs, all groups with a sampling channel must also have a sampling capacitor channel.
  • Tsc
    TSC driver
  • TscPin
    Pin struct that maintains usage

Enums§

  • Error
    Error type defined for TSC
  • G1
    Group 1 marker type.
  • G2
    Group 2 marker type.
  • G3
    Group 3 marker type.
  • G4
    Group 4 marker type.
  • G5
    Group 5 marker type.
  • G6
    Group 6 marker type.
  • G7
    Group 7 marker type.
  • G8
    Group 8 marker type.
  • Group
    Group identifier used to interrogate status
  • GroupStatus
    Individual group status checked after acquisition reported as complete For groups with multiple channel pins, may take longer because acquisitions are done sequentially. Check this status before pulling count for each sampled channel
  • PinType
    Pin type definition to control IO parameters
  • State
    Peripheral state

Traits§