mirror of
https://github.com/Feliix42/ssd1675.git
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Refactor DisplayInterface into trait, implement Command::execute
This commit is contained in:
Wesley Moore
parent
a4f5520d5c
commit
92a277f65b
4 changed files with 277 additions and 33 deletions
203
src/command.rs
203
src/command.rs
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@ -1,17 +1,26 @@
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use core;
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use interface::DisplayInterface;
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const MAX_GATES: u16 = 296;
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const MAX_DUMMY_LINE_PERIOD: u8 = 127;
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/// The address increment orientation when writing image data. This configures how the controller will
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/// auto-increment the row and column addresses when image data is written using the
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trait Contains<C> where C: Copy + PartialOrd {
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fn contains(&self, item: C) -> bool;
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}
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/// The address increment orientation when writing image data. This configures how the controller
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/// will auto-increment the row and column addresses when image data is written using the
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/// `WriteImageData` command.
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#[derive(Clone, Copy)]
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pub enum IncrementAxis {
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/// X direction
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Horizontal,
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/// Y direction
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Vertical,
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}
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#[derive(Clone, Copy)]
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enum DataEntryMode {
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pub enum DataEntryMode {
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DecrementXDecrementY,
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IncrementXDecrementY,
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DecrementXIncrementY,
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@ -19,18 +28,25 @@ enum DataEntryMode {
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}
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#[derive(Clone, Copy)]
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enum TemperatureSensor {
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pub enum TemperatureSensor {
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Internal,
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External,
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}
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#[derive(Clone, Copy)]
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enum RamOption {
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pub enum RamOption {
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Normal,
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Bypass,
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Invert,
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}
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#[derive(Clone, Copy)]
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pub enum DeepSleepMode {
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Mode1,
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Mode2,
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Normal,
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}
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pub enum Command {
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/// Set the MUX of gate lines, scanning sequence and direction
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/// 0: MAX gate lines
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@ -39,9 +55,10 @@ pub enum Command {
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/// Set the gate driving voltage.
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GateDrivingVoltage(u8),
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/// Set the source driving voltage.
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/// 0: VHS1/VSH2
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/// 1: VSL
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SourceDrivingVoltage(u16, u8),
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/// 0: VSH1
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/// 1: VSH2
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/// 2: VSL
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SourceDrivingVoltage(u8, u8, u8),
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/// Booster enable with phases 1 to 3 for soft start current and duration setting
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/// 0: Soft start setting for phase 1
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/// 1: Soft start setting for phase 2
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@ -51,7 +68,7 @@ pub enum Command {
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/// Set the scanning start position of the gate driver
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GateScanStartPostion(u16),
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/// Set deep sleep mode
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DeepSleepMode(u8),
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DeepSleepMode(DeepSleepMode),
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/// Set the data entry mode and increament axis
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DataEntryMode(DataEntryMode, IncrementAxis),
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/// Perform a soft reset, and reset all parameters to their default values
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@ -71,7 +88,7 @@ pub enum Command {
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ReadTemperatureSensor(u16),
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/// Write a command to the external temperature sensor
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WriteExternalTemperatureSensor(u8, u8, u8),
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/// Activate dispay update sequence. BUSY will be high when in progress.
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/// Activate display update sequence. BUSY will be high when in progress.
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UpdateDisplay,
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/// Set RAM content options for update display command.
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/// 0: Black/White RAM option
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@ -115,7 +132,7 @@ pub enum Command {
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/// Set the start/end positions of the window address in the Y direction
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/// 0: Start
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/// 1: End
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StartEndYPosition(u8, u8),
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StartEndYPosition(u16, u16),
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/// Auto write red RAM for regular pattern
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AutoWriteRedPattern(u8),
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/// Auto write red RAM for regular pattern
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@ -147,3 +164,167 @@ pub enum BufCommand<'buf> {
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/// Write LUT register (70 bytes)
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WriteLUT(&'buf [u8]),
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}
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fn u16_as_u8(val: u16) -> [u8; 2] {
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[(val & 0xFF00 >> 8) as u8, (val & 0xFF) as u8]
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}
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/// Populates data buffer (array) and returns a pair (tuple) with command and
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/// appropriately sized slice into populated buffer.
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/// E.g.
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///
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/// let mut buf = [0u8; 4];
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/// let (command, data) = pack!(buf, 0x3C, [0x12, 0x34]);
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macro_rules! pack {
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($buf:ident, $cmd:expr,[]) => {
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($cmd, &$buf[..0])
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};
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($buf:ident, $cmd:expr,[$arg0:expr]) => {{
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$buf[0] = $arg0;
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($cmd, &$buf[..1])
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}};
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($buf:ident, $cmd:expr,[$arg0:expr, $arg1:expr]) => {{
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$buf[0] = $arg0;
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$buf[1] = $arg1;
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($cmd, &$buf[..2])
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}};
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($buf:ident, $cmd:expr,[$arg0:expr, $arg1:expr, $arg2:expr]) => {{
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$buf[0] = $arg0;
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$buf[1] = $arg1;
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$buf[2] = $arg2;
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($cmd, &$buf[..3])
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}};
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($buf:ident, $cmd:expr,[$arg0:expr, $arg1:expr, $arg2:expr, $arg3:expr]) => {{
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$buf[0] = $arg0;
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$buf[1] = $arg1;
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$buf[2] = $arg2;
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$buf[3] = $arg3;
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($cmd, &$buf[..4])
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}};
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}
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impl Command {
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fn execute<I: DisplayInterface>(self, interface: &mut I) -> Result<(), I::Error> {
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use self::Command::*;
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let mut buf = [0u8; 4];
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let (command, data) = match self {
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DriverOutputControl(gate_lines, scanning_seq_and_dir) => {
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pack!(buf, 0x01, [0xD3, 0x00, 0x00])
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}
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GateDrivingVoltage(voltages) => {
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pack!(buf, 0x03, [voltages])
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}
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SourceDrivingVoltage(vsh1, vsh2, vsl) => {
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pack!(buf, 0x04, [vsh1, vsh2, vsl])
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}
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BoosterEnable(phase1, phase2, phase3, duration) => {
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pack!(buf, 0x0C, [phase1, phase2, phase3, duration])
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}
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GateScanStartPostion(position) => {
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debug_assert!(Contains::contains(&(0..MAX_GATES), position));
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let [upper, lower] = u16_as_u8(position);
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pack!(buf, 0x0F, [lower, upper])
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}
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DeepSleepMode(mode) => {
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let mode = match mode {
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self::DeepSleepMode::Normal => 0b00,
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self::DeepSleepMode::Mode1 => 0b01,
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self::DeepSleepMode::Mode2 => 0b11,
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};
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pack!(buf, 0x10, [mode])
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}
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DataEntryMode(data_entry_mode, increment_axis) => {
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let mode = match data_entry_mode {
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self::DataEntryMode::DecrementXDecrementY => 0b00,
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self::DataEntryMode::IncrementXDecrementY => 0b01,
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self::DataEntryMode::DecrementXIncrementY => 0b10,
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self::DataEntryMode::IncrementYIncrementX => 0b11,
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};
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let axis = match increment_axis {
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IncrementAxis::Horizontal => 0b000,
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IncrementAxis::Vertical => 0b100,
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};
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pack!(buf, 0x11, [axis | mode])
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}
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SoftReset => {
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pack!(buf, 0x12, [])
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}
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// TemperatatSensorSelection(TemperatureSensor) => {
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// }
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// WriteTemperatureSensor(u16) => {
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// }
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// ReadTemperatureSensor(u16) => {
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// }
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// WriteExternalTemperatureSensor(u8, u8, u8) => {
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// }
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UpdateDisplay => {
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pack!(buf, 0x20, [])
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}
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// UpdateDisplayOption1(RamOption, RamOption) => {
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// }
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// UpdateDisplayOption2(u8) => {
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// }
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// EnterVCOMSensing => {
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// }
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// VCOMSenseDuration(u8) => {
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// }
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// WriteVCOM(u8) => {
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// }
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DummyLinePeriod(period) => {
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debug_assert!(Contains::contains(&(0..=MAX_DUMMY_LINE_PERIOD), period));
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pack!(buf, 0x3A, [period])
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}
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GateLineWidth(tgate) => {
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pack!(buf, 0x3B, [tgate])
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}
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BorderWaveform(border_waveform) => {
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pack!(buf, 0x3C, [border_waveform])
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}
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StartEndXPosition(start, end) => {
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pack!(buf, 0x44, [start, end])
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}
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StartEndYPosition(start, end) => {
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let [start_upper, start_lower] = u16_as_u8(start);
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let [end_upper, end_lower] = u16_as_u8(end);
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pack!(buf, 0x45, [start_lower, start_upper, end_lower, end_upper])
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}
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// AutoWriteRedPattern(u8) => {
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// }
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// AutoWriteBlackPattern(u8) => {
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// }
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// XAddress(u8) => {
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// }
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// YAddress(u8) => {
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// }
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AnalogBlockControl(value) => {
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pack!(buf, 0x74, [value])
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}
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DigitalBlockControl(value) => {
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pack!(buf, 0x7E, [value])
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}
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_ => unimplemented!(),
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};
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interface.send_command(command)?;
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if data.len() == 0 {
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Ok(())
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} else {
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interface.send_data(data)
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}
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}
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}
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impl<C> Contains<C> for core::ops::Range<C> where C: Copy + PartialOrd {
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fn contains(&self, item: C) -> bool {
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item >= self.start && item < self.end
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}
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}
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impl<C> Contains<C> for core::ops::RangeInclusive<C> where C: Copy + PartialOrd {
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fn contains(&self, item: C) -> bool {
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item >= *self.start() && item <= *self.end()
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}
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}
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39
src/display.rs
Normal file
39
src/display.rs
Normal file
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@ -0,0 +1,39 @@
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use hal;
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use interface::DisplayInterface;
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struct Config {}
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struct Dimensions {
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rows: usize,
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cols: usize,
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}
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pub struct Display<I> where I: DisplayInterface {
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interface: I,
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dimensions: Dimensions,
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rotation: u8,
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}
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impl<I> Display<I> where I: DisplayInterface {
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fn new(interface: I, dimensions: Dimensions, rotation: u8) -> Self {
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Self { interface, dimensions, rotation }
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}
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fn reset<D: hal::blocking::delay::DelayMs<u8>>(&mut self, delay: &mut D) {
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self.interface.reset(delay)
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}
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fn init(&mut self, config: Config) -> Result<(), I::Error> {
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Ok(())
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}
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fn deep_sleep(&mut self) -> Result<(), I::Error> {
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// TODO: Send DeepSleep command
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unimplemented!()
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}
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}
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@ -3,7 +3,15 @@ use hal;
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// Section 15.2 of the HINK-E0213A07 data sheet says to hold for 10ms
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const RESET_DELAY_MS: u8 = 10;
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pub struct DisplayInterface<SPI, CS, BUSY, DC, RESET> {
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pub trait DisplayInterface {
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type Error;
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fn send_command(&mut self, command: u8) -> Result<(), Self::Error>;
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fn send_data(&mut self, data: &[u8]) -> Result<(), Self::Error>;
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fn reset<D: hal::blocking::delay::DelayMs<u8>>(&mut self, delay: &mut D);
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}
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pub struct Interface<SPI, CS, BUSY, DC, RESET> {
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/// SPI
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spi: SPI,
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/// CS for SPI
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@ -16,7 +24,7 @@ pub struct DisplayInterface<SPI, CS, BUSY, DC, RESET> {
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reset: RESET,
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}
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impl<SPI, CS, BUSY, DC, RESET> DisplayInterface<SPI, CS, BUSY, DC, RESET>
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impl<SPI, CS, BUSY, DC, RESET> Interface<SPI, CS, BUSY, DC, RESET>
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where
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SPI: hal::blocking::spi::Write<u8>,
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CS: hal::digital::OutputPin,
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@ -34,26 +42,6 @@ where
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}
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}
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fn reset<D: hal::blocking::delay::DelayMs<u8>>(&mut self, delay: &mut D) {
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self.reset.set_low();
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delay.delay_ms(RESET_DELAY_MS);
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self.reset.set_high();
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delay.delay_ms(RESET_DELAY_MS);
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}
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fn send_command(&mut self, command: u8) -> Result<(), SPI::Error> {
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self.dc.set_low();
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self.write(&[command])?;
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self.dc.set_high();
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Ok(())
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}
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fn send_data(&mut self, data: &[u8]) -> Result<(), SPI::Error> {
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self.dc.set_high();
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self.write(data)
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}
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fn write(&mut self, data: &[u8]) -> Result<(), SPI::Error> {
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// Select the controller with chip select (CS)
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self.cs.set_low();
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@ -79,3 +67,34 @@ where
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while self.busy.is_high() {}
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}
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}
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impl<SPI, CS, BUSY, DC, RESET> DisplayInterface for Interface<SPI, CS, BUSY, DC, RESET>
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where
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SPI: hal::blocking::spi::Write<u8>,
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CS: hal::digital::OutputPin,
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BUSY: hal::digital::InputPin,
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DC: hal::digital::OutputPin,
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RESET: hal::digital::OutputPin,
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{
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type Error = SPI::Error;
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fn reset<D: hal::blocking::delay::DelayMs<u8>>(&mut self, delay: &mut D) {
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self.reset.set_low();
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delay.delay_ms(RESET_DELAY_MS);
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self.reset.set_high();
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delay.delay_ms(RESET_DELAY_MS);
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}
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fn send_command(&mut self, command: u8) -> Result<(), Self::Error> {
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self.dc.set_low();
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self.write(&[command])?;
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self.dc.set_high();
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Ok(())
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}
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fn send_data(&mut self, data: &[u8]) -> Result<(), Self::Error> {
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self.dc.set_high();
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self.write(data)
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}
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}
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@ -1,7 +1,12 @@
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#![no_std]
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extern crate embedded_hal as hal;
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mod command;
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mod interface;
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mod display;
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pub use interface::DisplayInterface;
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#[cfg(test)]
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mod tests {
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