Started some shared traits between the different epds, saving now
This commit is contained in:
Christoph Groß
parent
4cd9b26a24
commit
ceee294cda
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@ -1,6 +1,6 @@
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//! SPI Commands for the Waveshare 4.2" E-Ink Display
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//! SPI Commands for the Waveshare 2.9" E-Ink Display
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/// EPD4IN2 commands
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/// EPD2IN9 commands
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///
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/// Should rarely (never?) be needed directly.
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///
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@ -10,138 +10,31 @@
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#[allow(dead_code)]
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#[allow(non_camel_case_types)]
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#[derive(Copy, Clone)]
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pub enum Command {
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/// Set Resolution, LUT selection, BWR pixels, gate scan direction, source shift direction, booster switch, soft reset
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PANEL_SETTING = 0x00,
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/// selecting internal and external power
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POWER_SETTING = 0x01,
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/// After the Power Off command, the driver will power off following the Power Off Sequence. This command will turn off charge
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/// pump, T-con, source driver, gate driver, VCOM, and temperature sensor, but register data will be kept until VDD becomes OFF.
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/// Source Driver output and Vcom will remain as previous condition, which may have 2 conditions: floating.
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POWER_OFF = 0x02,
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/// Setting Power OFF sequence
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POWER_OFF_SEQUENCE_SETTING = 0x03,
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/// Turning On the Power
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POWER_ON = 0x04,
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/// This command enables the internal bandgap, which will be cleared by the next POF.
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POWER_ON_MEASURE = 0x05,
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/// Starting data transmission
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BOOSTER_SOFT_START = 0x06,
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/// After this command is transmitted, the chip would enter the deep-sleep mode to save power.
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///
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/// The deep sleep mode would return to standby by hardware reset.
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///
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/// The only one parameter is a check code, the command would be excuted if check code = 0xA5.
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DEEP_SLEEP = 0x07,
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/// This command starts transmitting data and write them into SRAM. To complete data transmission, command DSP (Data
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/// transmission Stop) must be issued. Then the chip will start to send data/VCOM for panel.
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///
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/// - In B/W mode, this command writes “OLD” data to SRAM.
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/// - In B/W/Red mode, this command writes “B/W” data to SRAM.
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/// - In Program mode, this command writes “OTP” data to SRAM for programming.
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DATA_START_TRANSMISSION_1 = 0x10,
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/// Stopping data transmission
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DATA_STOP = 0x11,
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/// While user sent this command, driver will refresh display (data/VCOM) according to SRAM data and LUT.
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///
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/// After Display Refresh command, BUSY_N signal will become “0” and the refreshing of panel starts.
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DISPLAY_REFRESH = 0x12,
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/// This command starts transmitting data and write them into SRAM. To complete data transmission, command DSP (Data
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/// transmission Stop) must be issued. Then the chip will start to send data/VCOM for panel.
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/// - In B/W mode, this command writes “NEW” data to SRAM.
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/// - In B/W/Red mode, this command writes “RED” data to SRAM.
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DATA_START_TRANSMISSION_2 = 0x13,
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/// This command stores VCOM Look-Up Table with 7 groups of data. Each group contains information for one state and is stored
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/// with 6 bytes, while the sixth byte indicates how many times that phase will repeat.
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///
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/// from IL0373
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LUT_FOR_VCOM = 0x20,
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/// This command stores White-to-White Look-Up Table with 7 groups of data. Each group contains information for one state and is
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/// stored with 6 bytes, while the sixth byte indicates how many times that phase will repeat.
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///
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/// from IL0373
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LUT_WHITE_TO_WHITE = 0x21,
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/// This command stores Black-to-White Look-Up Table with 7 groups of data. Each group contains information for one state and is
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/// stored with 6 bytes, while the sixth byte indicates how many times that phase will repeat.
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///
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/// from IL0373
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LUT_BLACK_TO_WHITE = 0x22,
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/// This command stores White-to-Black Look-Up Table with 7 groups of data. Each group contains information for one state and is
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/// stored with 6 bytes, while the sixth byte indicates how many times that phase will repeat.
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///
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/// from IL0373
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LUT_WHITE_TO_BLACK = 0x23,
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/// This command stores Black-to-Black Look-Up Table with 7 groups of data. Each group contains information for one state and is
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/// stored with 6 bytes, while the sixth byte indicates how many times that phase will repeat.
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///
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/// from IL0373
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LUT_BLACK_TO_BLACK = 0x24,
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/// The command controls the PLL clock frequency.
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PLL_CONTROL = 0x30,
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/// This command reads the temperature sensed by the temperature sensor.
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///
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/// Doesn't work! Waveshare doesn't connect the read pin
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TEMPERATURE_SENSOR_COMMAND = 0x40,
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/// Selects the Internal or External temperature sensor and offset
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TEMPERATURE_SENSOR_SELECTION = 0x41,
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/// Write External Temperature Sensor
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TEMPERATURE_SENSOR_WRITE = 0x42,
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/// Read External Temperature Sensor
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///
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/// Doesn't work! Waveshare doesn't connect the read pin
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TEMPERATURE_SENSOR_READ = 0x43,
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/// This command indicates the interval of Vcom and data output. When setting the vertical back porch, the total blanking will be kept (20 Hsync)
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VCOM_AND_DATA_INTERVAL_SETTING = 0x50,
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/// This command indicates the input power condition. Host can read this flag to learn the battery condition.
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LOW_POWER_DETECTION = 0x51,
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/// This command defines non-overlap period of Gate and Source.
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TCON_SETTING = 0x60,
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/// This command defines alternative resolution and this setting is of higher priority than the RES[1:0] in R00H (PSR).
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RESOLUTION_SETTING = 0x61,
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/// This command defines the Fist Active Gate and First Active Source of active channels.
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GSST_SETTING = 0x65,
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/// The LUT_REV / Chip Revision is read from OTP address = 0x001.
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///
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/// Doesn't work! Waveshare doesn't connect the read pin
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REVISION = 0x70,
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/// Read Flags. This command reads the IC status
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/// PTL, I2C_ERR, I2C_BUSY, DATA, PON, POF, BUSY
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///
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/// Doesn't work! Waveshare doesn't connect the read pin
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GET_STATUS = 0x71,
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/// Automatically measure VCOM. This command reads the IC status
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AUTO_MEASUREMENT_VCOM = 0x80,
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/// This command gets the VCOM value
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///
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/// Doesn't work! Waveshare doesn't connect the read pin
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READ_VCOM_VALUE = 0x81,
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/// Set VCM_DC
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VCM_DC_SETTING = 0x82,
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/// This command sets partial window
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PARTIAL_WINDOW = 0x90,
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/// This command makes the display enter partial mode
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PARTIAL_IN = 0x91,
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/// This command makes the display exit partial mode and enter normal mode
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PARTIAL_OUT = 0x92,
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/// After this command is issued, the chip would enter the program mode.
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///
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/// After the programming procedure completed, a hardware reset is necessary for leaving program mode.
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///
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/// The only one parameter is a check code, the command would be excuted if check code = 0xA5.
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PROGRAM_MODE = 0xA0,
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/// After this command is transmitted, the programming state machine would be activated.
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///
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/// The BUSY flag would fall to 0 until the programming is completed.
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ACTIVE_PROGRAMMING = 0xA1,
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/// The command is used for reading the content of OTP for checking the data of programming.
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///
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/// The value of (n) is depending on the amount of programmed data, tha max address = 0xFFF.
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READ_OTP = 0xA2,
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/// This command is set for saving power during fresh period. If the output voltage of VCOM / Source is from negative to positive or
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/// from positive to negative, the power saving mechanism will be activated. The active period width is defined by the following two
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/// parameters.
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POWER_SAVING = 0xE3,
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pub(crate) enum Command {
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/// Driver Output control
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/// 3 Databytes:
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/// A[7:0]
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/// 0.. A[8]
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/// 0.. B[2:0]
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/// Default: Set A[8:0] = 0x127 and B[2:0] = 0x0
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DRIVER_OUTPUT_CONTROL = 0x01,
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/// Booster Soft start control
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/// 3 Databytes:
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/// 1.. A[6:0]
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/// 1.. B[6:0]
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/// 1.. C[6:0]
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/// Default: A[7:0] = 0xCF, B[7:0] = 0xCE, C[7:0] = 0x8D
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BOOSTER_SOFT_START_CONTROL = 0x0C,
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//TODO: useful?
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// GATE_SCAN_START_POSITION = 0x0F,
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/// Deep Sleep Mode Control
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/// 1 Databyte:
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/// 0.. A[0]
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/// Values:
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/// A[0] = 0: Normal Mode (POR)
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/// A[0] = 1: Enter Deep Sleep Mode
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DEEP_SLEEP_MODE = 0x10,
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// /// Data Entry mode setting
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}
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@ -160,10 +53,10 @@ mod tests {
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#[test]
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fn command_addr() {
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assert_eq!(Command::POWER_SAVING.addr(), 0xE3);
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//assert_eq!(Command::POWER_SAVING.addr(), 0xE3);
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assert_eq!(Command::PANEL_SETTING.addr(), 0x00);
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//assert_eq!(Command::PANEL_SETTING.addr(), 0x00);
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assert_eq!(Command::DISPLAY_REFRESH.addr(), 0x12);
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//assert_eq!(Command::DISPLAY_REFRESH.addr(), 0x12);
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}
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}
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@ -0,0 +1,17 @@
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pub(crate) const WIDTH: usize = 128;
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pub(crate) const HEIGHT: usize = 296;
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// Original Waveforms from Waveshare
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pub(crate) const LUT_FULL_UPDATE: [u8; 30] =[
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0x02, 0x02, 0x01, 0x11, 0x12, 0x12, 0x22, 0x22,
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0x66, 0x69, 0x69, 0x59, 0x58, 0x99, 0x99, 0x88,
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0x00, 0x00, 0x00, 0x00, 0xF8, 0xB4, 0x13, 0x51,
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0x35, 0x51, 0x51, 0x19, 0x01, 0x00
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];
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pub(crate) const LUT_PARTIAL_UPDATE: [u8; 30] =[
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0x10, 0x18, 0x18, 0x08, 0x18, 0x18, 0x08, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x13, 0x14, 0x44, 0x12,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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];
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@ -1,102 +0,0 @@
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pub(crate) const LUT_VCOM0: [u8; 44] = [
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0x00, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x00, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x00, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_VCOM0_QUICK: [u8; 44] = [
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0x00, 0x0E, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_WW: [u8; 42] =[
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0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_WW_QUICK: [u8; 42] =[
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0xA0, 0x0E, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_BW: [u8; 42] =[
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0x40, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x40, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_BW_QUICK: [u8; 42] =[
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0xA0, 0x0E, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_BB: [u8; 42] =[
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0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_BB_QUICK: [u8; 42] =[
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0x50, 0x0E, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_WB: [u8; 42] =[
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0x80, 0x17, 0x00, 0x00, 0x00, 0x02,
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0x90, 0x17, 0x17, 0x00, 0x00, 0x02,
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0x80, 0x0A, 0x01, 0x00, 0x00, 0x01,
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0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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pub(crate) const LUT_WB_QUICK: [u8; 42] =[
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0x50, 0x0E, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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];
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@ -57,54 +57,108 @@ use hal::{
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digital::*
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};
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//The Lookup Tables for the Display
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mod lut;
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use self::lut::*;
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mod constants;
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use self::constants::*;
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use drawing::color::Color;
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pub mod command;
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pub use command::Command as Command;
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//TODO: test spi mode
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/// SPI mode -
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/// For more infos see [Requirements: SPI](index.html#spi)
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pub const SPI_MODE: Mode = Mode {
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phase: Phase::CaptureOnFirstTransition,
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polarity: Polarity::IdleLow,
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};
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use interface::*;
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use interface::data_interface::DataInterface;
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/// EPD4in2 driver
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///
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pub struct EPD4in2<SPI, CS, BUSY, DC, RST, D> {
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pub struct EPD2in9<SPI, CS, BUSY, DC, RST, D> {
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/// SPI
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spi: SPI,
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/// CS for SPI
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cs: CS,
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/// Low for busy, Wait until display is ready!
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busy: BUSY,
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/// Data/Command Control Pin (High for data, Low for command)
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dc: DC,
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/// Pin for Reseting
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rst: RST,
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/// The concrete Delay implementation
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delay: D,
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interface: DataInterface<SPI, CS, BUSY, DC, RST, D>,
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/// Width
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width: u16,
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width: u32,
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/// Height
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height: u16,
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height: u32,
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}
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impl<SPI, CS, BUSY, DC, RST, D, E> EPD4in2<SPI, CS, BUSY, DC, RST, D>
|
||||
impl<SPI, CS, BUSY, DC, RST, D, E> EPD2in9<SPI, CS, BUSY, DC, RST, D>
|
||||
where
|
||||
SPI: Write<u8, Error = E>,
|
||||
CS: OutputPin,
|
||||
BUSY: InputPin,
|
||||
DC: OutputPin,
|
||||
RST: OutputPin,
|
||||
D: DelayUs<u16> + DelayMs<u16>
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
|
||||
impl<SPI, CS, BUSY, DC, RST, D, E> WaveshareInterface<SPI, CS, BUSY, DC, RST, D, E> for EPD2in9<SPI, CS, BUSY, DC, RST, D>
|
||||
where
|
||||
SPI: Write<u8, Error = E>,
|
||||
CS: OutputPin,
|
||||
BUSY: InputPin,
|
||||
DC: OutputPin,
|
||||
RST: OutputPin,
|
||||
D: DelayUs<u16> + DelayMs<u16>,
|
||||
{
|
||||
fn get_width(&self) -> u32 {
|
||||
self.width
|
||||
}
|
||||
|
||||
fn get_height(&self) -> u32 {
|
||||
self.height
|
||||
}
|
||||
|
||||
|
||||
fn new(
|
||||
spi: SPI,
|
||||
cs: CS,
|
||||
busy: BUSY,
|
||||
dc: DC,
|
||||
rst: RST,
|
||||
delay: D
|
||||
) -> Result<Self, E> {
|
||||
let width = WIDTH as u32;
|
||||
let height = HEIGHT as u32;
|
||||
|
||||
let mut interface = DataInterface::new(spi, cs, busy, dc, rst, delay);
|
||||
|
||||
let mut epd = EPD2in9 {interface, width, height};
|
||||
|
||||
|
||||
epd.init()?;
|
||||
|
||||
Ok(epd)
|
||||
}
|
||||
|
||||
|
||||
|
||||
fn init(&mut self) -> Result<(), E> {
|
||||
//TODO:
|
||||
Ok(())
|
||||
}
|
||||
fn sleep(&mut self) -> Result<(), E> {
|
||||
Ok(())
|
||||
}
|
||||
fn reset(&mut self) {
|
||||
//TODO:
|
||||
}
|
||||
fn wait_until_idle(&mut self) {
|
||||
|
||||
}
|
||||
fn delay_ms(&mut self, delay: u32) {
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
|
||||
|
||||
impl<SPI, CS, BUSY, DC, RST, D, E> EPD2in9<SPI, CS, BUSY, DC, RST, D>
|
||||
where
|
||||
SPI: Write<u8, Error = E>,
|
||||
CS: OutputPin,
|
||||
|
|
@ -141,8 +195,8 @@ where
|
|||
/// ```
|
||||
pub fn new(spi: SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: D) -> Result<Self, E> {
|
||||
//TODO: width und height anpassbar machen?
|
||||
let width = 400;
|
||||
let height = 300;
|
||||
let width = WIDTH as u16;
|
||||
let height = HEIGHT as u16;
|
||||
|
||||
let mut epd4in2 = EPD4in2 {spi, cs, busy, dc, rst, delay, width, height };
|
||||
|
||||
|
|
@ -390,22 +444,7 @@ where
|
|||
Ok(())
|
||||
}
|
||||
|
||||
/// Resets the device.
|
||||
///
|
||||
/// Often used to awake the module from deep sleep. See [EPD4in2::sleep()](EPD4in2::sleep())
|
||||
///
|
||||
/// TODO: Takes at least 400ms of delay alone, can it be shortened?
|
||||
pub fn reset(&mut self) {
|
||||
self.rst.set_low();
|
||||
|
||||
//TODO: why 200ms? (besides being in the waveshare code)
|
||||
self.delay_ms(200);
|
||||
|
||||
self.rst.set_high();
|
||||
|
||||
//TODO: same as 3 lines above
|
||||
self.delay_ms(200);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
|
@ -463,91 +502,14 @@ where
|
|||
Ok(())
|
||||
}
|
||||
|
||||
/// Basic function for sending [Commands](Command).
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_data()](EPD4in2::send_data())
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_command(&mut self, command: Command) -> Result<(), E> {
|
||||
// low for commands
|
||||
self.dc.set_low();
|
||||
|
||||
// Transfer the command over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(&[command.addr()])
|
||||
})
|
||||
}
|
||||
|
||||
/// Basic function for sending a single u8 of data over spi
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_command()](EPD4in2::send_command())
|
||||
///
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_data(&mut self, val: u8) -> Result<(), E> {
|
||||
// high for data
|
||||
self.dc.set_high();
|
||||
|
||||
// Transfer data (u8) over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(&[val])
|
||||
})
|
||||
}
|
||||
|
||||
/// Basic function for sending an array of u8-values of data over spi
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_command()](EPD4in2::send_command())
|
||||
///
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_multiple_data(&mut self, data: &[u8]) -> Result<(), E> {
|
||||
// high for data
|
||||
self.dc.set_high();
|
||||
|
||||
// Transfer data (u8-array) over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(data)
|
||||
})
|
||||
}
|
||||
|
||||
// spi write helper/abstraction function
|
||||
fn with_cs<F>(&mut self, f: F) -> Result<(), E>
|
||||
where
|
||||
F: FnOnce(&mut Self) -> Result<(), E>,
|
||||
{
|
||||
// activate spi with cs low
|
||||
self.cs.set_low();
|
||||
// transfer spi data
|
||||
let result = f(self);
|
||||
// deativate spi with cs high
|
||||
self.cs.set_high();
|
||||
// return result
|
||||
result
|
||||
}
|
||||
|
||||
|
||||
/// Waits until device isn't busy anymore (busy == HIGH)
|
||||
///
|
||||
/// This is normally handled by the more complicated commands themselves,
|
||||
/// but in the case you send data and commands directly you might need to check
|
||||
/// if the device is still busy
|
||||
pub fn wait_until_idle(&mut self) {
|
||||
//low: busy, high: idle
|
||||
while self.busy.is_low() {
|
||||
//TODO: shorten the time? it was 100 in the beginning
|
||||
self.delay_ms(10);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// Abstraction of setting the delay for simpler calls
|
||||
pub fn delay_ms(&mut self, delay: u16) {
|
||||
self.delay.delay_ms(delay);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
*/
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,142 @@
|
|||
use hal::{
|
||||
blocking::{
|
||||
spi::Write,
|
||||
delay::*
|
||||
},
|
||||
spi::{Mode, Phase, Polarity},
|
||||
digital::*
|
||||
};
|
||||
|
||||
use interface::Command;
|
||||
|
||||
/// EPD4in2 driver
|
||||
///
|
||||
pub struct DataInterface<SPI, CS, BUSY, DC, RST, D> {
|
||||
/// SPI
|
||||
spi: SPI,
|
||||
/// CS for SPI
|
||||
cs: CS,
|
||||
/// Low for busy, Wait until display is ready!
|
||||
busy: BUSY,
|
||||
/// Data/Command Control Pin (High for data, Low for command)
|
||||
dc: DC,
|
||||
/// Pin for Reseting
|
||||
rst: RST,
|
||||
/// The concrete Delay implementation
|
||||
delay: D,
|
||||
}
|
||||
|
||||
|
||||
impl<SPI, CS, BUSY, DC, RST, D, E> DataInterface<SPI, CS, BUSY, DC, RST, D>
|
||||
where
|
||||
SPI: Write<u8, Error = E>,
|
||||
CS: OutputPin,
|
||||
BUSY: InputPin,
|
||||
DC: OutputPin,
|
||||
RST: OutputPin,
|
||||
D: DelayUs<u16> + DelayMs<u16>,
|
||||
{
|
||||
pub fn new(spi: SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: D) -> Self {
|
||||
DataInterface {spi, cs, busy, dc, rst, delay }
|
||||
}
|
||||
|
||||
/// Basic function for sending [Commands](Command).
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_data()](EPD4in2::send_data())
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_command<T: Command>(&mut self, command: T) -> Result<(), E> {
|
||||
// low for commands
|
||||
self.dc.set_low();
|
||||
|
||||
// Transfer the command over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(&[command.address()])
|
||||
})
|
||||
}
|
||||
|
||||
/// Basic function for sending a single u8 of data over spi
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_command()](EPD4in2::send_command())
|
||||
///
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_data(&mut self, val: u8) -> Result<(), E> {
|
||||
// high for data
|
||||
self.dc.set_high();
|
||||
|
||||
// Transfer data (u8) over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(&[val])
|
||||
})
|
||||
}
|
||||
|
||||
/// Basic function for sending an array of u8-values of data over spi
|
||||
///
|
||||
/// Enables direct interaction with the device with the help of [EPD4in2::send_command()](EPD4in2::send_command())
|
||||
///
|
||||
/// Should rarely be needed!
|
||||
/// //TODO: make public?
|
||||
fn send_multiple_data(&mut self, data: &[u8]) -> Result<(), E> {
|
||||
// high for data
|
||||
self.dc.set_high();
|
||||
|
||||
// Transfer data (u8-array) over spi
|
||||
self.with_cs(|epd| {
|
||||
epd.spi.write(data)
|
||||
})
|
||||
}
|
||||
|
||||
// spi write helper/abstraction function
|
||||
fn with_cs<F>(&mut self, f: F) -> Result<(), E>
|
||||
where
|
||||
F: FnOnce(&mut Self) -> Result<(), E>,
|
||||
{
|
||||
// activate spi with cs low
|
||||
self.cs.set_low();
|
||||
// transfer spi data
|
||||
let result = f(self);
|
||||
// deativate spi with cs high
|
||||
self.cs.set_high();
|
||||
// return result
|
||||
result
|
||||
}
|
||||
|
||||
|
||||
/// Waits until device isn't busy anymore (busy == HIGH)
|
||||
///
|
||||
/// This is normally handled by the more complicated commands themselves,
|
||||
/// but in the case you send data and commands directly you might need to check
|
||||
/// if the device is still busy
|
||||
pub fn wait_until_idle(&mut self) {
|
||||
//low: busy, high: idle
|
||||
while self.busy.is_low() {
|
||||
//TODO: shorten the time? it was 100 in the beginning
|
||||
self.delay_ms(10);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// Abstraction of setting the delay for simpler calls
|
||||
pub fn delay_ms(&mut self, delay: u16) {
|
||||
self.delay.delay_ms(delay);
|
||||
}
|
||||
|
||||
/// Resets the device.
|
||||
///
|
||||
/// Often used to awake the module from deep sleep. See [EPD4in2::sleep()](EPD4in2::sleep())
|
||||
///
|
||||
/// TODO: Takes at least 400ms of delay alone, can it be shortened?
|
||||
pub fn reset(&mut self) {
|
||||
self.rst.set_low();
|
||||
|
||||
//TODO: why 200ms? (besides being in the waveshare code)
|
||||
self.delay_ms(200);
|
||||
|
||||
self.rst.set_high();
|
||||
|
||||
//TODO: same as 3 lines above
|
||||
self.delay_ms(200);
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,105 @@
|
|||
use hal::{
|
||||
blocking::{
|
||||
spi::Write,
|
||||
delay::*
|
||||
},
|
||||
spi::{Mode, Phase, Polarity},
|
||||
digital::*
|
||||
};
|
||||
|
||||
pub mod data_interface;
|
||||
|
||||
//TODO: test spi mode
|
||||
/// SPI mode -
|
||||
/// For more infos see [Requirements: SPI](index.html#spi)
|
||||
pub const SPI_MODE: Mode = Mode {
|
||||
phase: Phase::CaptureOnFirstTransition,
|
||||
polarity: Polarity::IdleLow,
|
||||
};
|
||||
|
||||
use core::marker::Sized;
|
||||
|
||||
pub(crate) trait Command {
|
||||
fn address(&self) -> u8;
|
||||
}
|
||||
|
||||
pub trait WaveshareInterface<SPI, CS, BUSY, DC, RST, D, E>
|
||||
where
|
||||
SPI: Write<u8, Error = E>,
|
||||
CS: OutputPin,
|
||||
BUSY: InputPin,
|
||||
DC: OutputPin,
|
||||
RST: OutputPin,
|
||||
D: DelayUs<u16> + DelayMs<u16>,
|
||||
{
|
||||
/// Get the width of the display
|
||||
fn get_width(&self) -> u32;
|
||||
fn get_height(&self) -> u32;
|
||||
fn new(
|
||||
spi: SPI,
|
||||
cs: CS,
|
||||
busy: BUSY,
|
||||
dc: DC,
|
||||
rst: RST,
|
||||
delay: D
|
||||
) -> Result<Self, E>
|
||||
where Self: Sized;
|
||||
fn init(&mut self) -> Result<(), E>;
|
||||
fn sleep(&mut self) -> Result<(), E>;
|
||||
fn reset(&mut self);
|
||||
fn wait_until_idle(&mut self);
|
||||
fn delay_ms(&mut self, delay: u32);
|
||||
|
||||
/*
|
||||
fn clear_frame(&mut self, reset_color: Option<Color>) -> Result<(), E>
|
||||
|
||||
fn display_frame_quick(&mut self) -> Result<(), E>
|
||||
|
||||
fn display_frame(&mut self) -> Result<(), E>
|
||||
|
||||
pub fn display_and_transfer_frame(
|
||||
&mut self,
|
||||
buffer: &[u8],
|
||||
color: Option<u8>
|
||||
) -> Result<(), E>
|
||||
|
||||
pub fn set_partial_window(
|
||||
&mut self,
|
||||
buffer: &[u8],
|
||||
x: u16,
|
||||
y: u16,
|
||||
w: u16,
|
||||
l: u16,
|
||||
is_dtm1: bool
|
||||
) -> Result<(), E>
|
||||
|
||||
*/
|
||||
|
||||
}
|
||||
|
||||
|
||||
pub trait TestInterface
|
||||
{
|
||||
fn get_width(&self) -> u32;
|
||||
fn get_height(&self) -> u32;
|
||||
|
||||
|
||||
}
|
||||
|
||||
struct testStruct {
|
||||
width: u32,
|
||||
height: u32,
|
||||
}
|
||||
|
||||
impl TestInterface for testStruct {
|
||||
fn get_width(&self) -> u32 {
|
||||
self.width
|
||||
}
|
||||
|
||||
fn get_height(&self) -> u32 {
|
||||
self.height
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -60,6 +60,12 @@ pub mod drawing;
|
|||
pub mod epd4in2;
|
||||
use epd4in2::*;
|
||||
|
||||
pub mod epd2in9;
|
||||
|
||||
pub mod interface;
|
||||
|
||||
|
||||
|
||||
//TODO: test spi mode
|
||||
/// SPI mode -
|
||||
/// For more infos see [Requirements: SPI](index.html#spi)
|
||||
|
|
|
|||
Loading…
Reference in New Issue