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Made SPI shareable

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Disown spi for better shareabilty
This commit is contained in:
Chris
2018-10-10 16:06:27 +02:00
parent 6a24acf62b
commit 87832f6043
5 changed files with 241 additions and 211 deletions
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src/epd1in54/mod.rs
+53 -46
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@@ -48,15 +48,15 @@ pub struct EPD1in54<SPI, CS, BUSY, DC, RST> {
background_color: Color,
}
impl<SPI, CS, BUSY, DC, RST, E> EPD1in54<SPI, CS, BUSY, DC, RST>
impl<SPI, CS, BUSY, DC, RST> EPD1in54<SPI, CS, BUSY, DC, RST>
where
SPI: Write<u8, Error = E>,
SPI: Write<u8>,
CS: OutputPin,
BUSY: InputPin,
DC: OutputPin,
RST: OutputPin,
{
fn init<DELAY: DelayMs<u8>>(&mut self, delay: &mut DELAY) -> Result<(), E> {
fn init<DELAY: DelayMs<u8>>(&mut self, spi: &mut SPI, delay: &mut DELAY) -> Result<(), SPI::Error> {
self.interface.reset(delay);
// 3 Databytes:
@@ -65,6 +65,7 @@ where
// 0.. B[2:0]
// Default Values: A = Height of Screen (0x127), B = 0x00 (GD, SM and TB=0?)
self.interface.cmd_with_data(
spi,
Command::DRIVER_OUTPUT_CONTROL,
&[HEIGHT as u8, (HEIGHT >> 8) as u8, 0x00]
)?;
@@ -74,27 +75,27 @@ where
// 1 .. B[6:0] = 0xCE | 0xD6
// 1 .. C[6:0] = 0x8D | 0x9D
//TODO: test
self.interface.cmd_with_data(Command::BOOSTER_SOFT_START_CONTROL, &[0xD7, 0xD6, 0x9D])?;
self.interface.cmd_with_data(spi, Command::BOOSTER_SOFT_START_CONTROL, &[0xD7, 0xD6, 0x9D])?;
// One Databyte with value 0xA8 for 7V VCOM
self.interface.cmd_with_data(Command::WRITE_VCOM_REGISTER, &[0xA8])?;
self.interface.cmd_with_data(spi, Command::WRITE_VCOM_REGISTER, &[0xA8])?;
// One Databyte with default value 0x1A for 4 dummy lines per gate
self.interface.cmd_with_data(Command::SET_DUMMY_LINE_PERIOD, &[0x1A])?;
self.interface.cmd_with_data(spi, Command::SET_DUMMY_LINE_PERIOD, &[0x1A])?;
// One Databyte with default value 0x08 for 2us per line
self.interface.cmd_with_data(Command::SET_GATE_LINE_WIDTH, &[0x08])?;
self.interface.cmd_with_data(spi, Command::SET_GATE_LINE_WIDTH, &[0x08])?;
// One Databyte with default value 0x03
// -> address: x increment, y increment, address counter is updated in x direction
self.interface.cmd_with_data(Command::DATA_ENTRY_MODE_SETTING, &[0x03])?;
self.interface.cmd_with_data(spi, Command::DATA_ENTRY_MODE_SETTING, &[0x03])?;
self.set_lut()
self.set_lut(spi)
}
}
impl<SPI, CS, BUSY, DC, RST, E> WaveshareInterface<SPI, CS, BUSY, DC, RST, E>
impl<SPI, CS, BUSY, DC, RST, E> WaveshareInterface<SPI, CS, BUSY, DC, RST>
for EPD1in54<SPI, CS, BUSY, DC, RST>
where
SPI: Write<u8, Error = E>,
@@ -112,74 +113,76 @@ where
}
fn new<DELAY: DelayMs<u8>>(
spi: SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: &mut DELAY,
) -> Result<Self, E> {
let interface = ConnectionInterface::new(spi, cs, busy, dc, rst);
spi: &mut SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: &mut DELAY,
) -> Result<Self, SPI::Error> {
let interface = ConnectionInterface::new(cs, busy, dc, rst);
let mut epd = EPD1in54 {
interface,
background_color: DEFAULT_BACKGROUND_COLOR,
};
epd.init(delay)?;
epd.init(spi, delay)?;
Ok(epd)
}
fn wake_up<DELAY: DelayMs<u8>>(&mut self, delay: &mut DELAY) -> Result<(), E> {
self.init(delay)
fn wake_up<DELAY: DelayMs<u8>>(&mut self, spi: &mut SPI, delay: &mut DELAY) -> Result<(), SPI::Error> {
self.init(spi, delay)
}
fn sleep(&mut self) -> Result<(), E> {
fn sleep(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
// 0x00 for Normal mode (Power on Reset), 0x01 for Deep Sleep Mode
//TODO: is 0x00 needed here or would 0x01 be even more efficient?
self.interface.cmd_with_data(Command::DEEP_SLEEP_MODE, &[0x00])?;
self.interface.cmd_with_data(spi, Command::DEEP_SLEEP_MODE, &[0x00])?;
self.wait_until_idle();
Ok(())
}
fn update_frame(&mut self, buffer: &[u8]) -> Result<(), E> {
self.use_full_frame()?;
self.interface.cmd_with_data(Command::WRITE_RAM, buffer)
fn update_frame(&mut self, spi: &mut SPI, buffer: &[u8]) -> Result<(), SPI::Error> {
self.use_full_frame(spi)?;
self.interface.cmd_with_data(spi, Command::WRITE_RAM, buffer)
}
//TODO: update description: last 3 bits will be ignored for width and x_pos
fn update_partial_frame(
&mut self,
spi: &mut SPI,
buffer: &[u8],
x: u16,
y: u16,
width: u16,
height: u16,
) -> Result<(), E> {
self.set_ram_area(x, y, x + width, y + height)?;
self.set_ram_counter(x, y)?;
) -> Result<(), SPI::Error> {
self.set_ram_area(spi, x, y, x + width, y + height)?;
self.set_ram_counter(spi, x, y)?;
self.interface.cmd_with_data(Command::WRITE_RAM, buffer)
self.interface.cmd_with_data(spi, Command::WRITE_RAM, buffer)
}
fn display_frame(&mut self) -> Result<(), E> {
fn display_frame(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
// enable clock signal, enable cp, display pattern -> 0xC4 (tested with the arduino version)
//TODO: test control_1 or control_2 with default value 0xFF (from the datasheet)
self.interface.cmd_with_data(Command::DISPLAY_UPDATE_CONTROL_2, &[0xC4])?;
self.interface.cmd_with_data(spi, Command::DISPLAY_UPDATE_CONTROL_2, &[0xC4])?;
self.interface.cmd(Command::MASTER_ACTIVATION)?;
self.interface.cmd(spi, Command::MASTER_ACTIVATION)?;
// MASTER Activation should not be interupted to avoid currption of panel images
// therefore a terminate command is send
self.interface.cmd(Command::NOP)
self.interface.cmd(spi, Command::NOP)
}
fn clear_frame(&mut self) -> Result<(), E> {
self.use_full_frame()?;
fn clear_frame(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
self.use_full_frame(spi)?;
// clear the ram with the background color
let color = self.background_color.get_byte_value();
//TODO: this is using a big buffer atm, is it better to just loop over sending a single byte?
self.interface.cmd_with_data(
spi,
Command::WRITE_RAM,
&[color; WIDTH as usize / 8 * HEIGHT as usize]
)
@@ -196,9 +199,9 @@ where
}
}
impl<SPI, CS, BUSY, DC, RST, E> EPD1in54<SPI, CS, BUSY, DC, RST>
impl<SPI, CS, BUSY, DC, RST> EPD1in54<SPI, CS, BUSY, DC, RST>
where
SPI: Write<u8, Error = E>,
SPI: Write<u8>,
CS: OutputPin,
BUSY: InputPin,
DC: OutputPin,
@@ -208,45 +211,49 @@ where
self.interface.wait_until_idle(false);
}
pub(crate) fn use_full_frame(&mut self) -> Result<(), E> {
pub(crate) fn use_full_frame(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
// choose full frame/ram
self.set_ram_area(0, 0, WIDTH - 1, HEIGHT - 1)?;
self.set_ram_area(spi, 0, 0, WIDTH - 1, HEIGHT - 1)?;
// start from the beginning
self.set_ram_counter(0, 0)
self.set_ram_counter(spi, 0, 0)
}
pub(crate) fn set_ram_area(
&mut self,
&mut self,
spi: &mut SPI,
start_x: u16,
start_y: u16,
end_x: u16,
end_y: u16,
) -> Result<(), E> {
) -> Result<(), SPI::Error> {
assert!(start_x < end_x);
assert!(start_y < end_y);
// x is positioned in bytes, so the last 3 bits which show the position inside a byte in the ram
// aren't relevant
self.interface.cmd_with_data(
spi,
Command::SET_RAM_X_ADDRESS_START_END_POSITION,
&[(start_x >> 3) as u8, (end_x >> 3) as u8]
)?;
// 2 Databytes: A[7:0] & 0..A[8] for each - start and end
self.interface.cmd_with_data(
spi,
Command::SET_RAM_Y_ADDRESS_START_END_POSITION,
&[start_y as u8, (start_y >> 8) as u8, end_y as u8, (end_y >> 8) as u8]
)
}
pub(crate) fn set_ram_counter(&mut self, x: u16, y: u16) -> Result<(), E> {
pub(crate) fn set_ram_counter(&mut self, spi: &mut SPI, x: u16, y: u16) -> Result<(), SPI::Error> {
// x is positioned in bytes, so the last 3 bits which show the position inside a byte in the ram
// aren't relevant
self.interface.cmd_with_data(Command::SET_RAM_X_ADDRESS_COUNTER, &[(x >> 3) as u8])?;
self.interface.cmd_with_data(spi, Command::SET_RAM_X_ADDRESS_COUNTER, &[(x >> 3) as u8])?;
// 2 Databytes: A[7:0] & 0..A[8]
self.interface.cmd_with_data(
spi,
Command::SET_RAM_Y_ADDRESS_COUNTER,
&[
y as u8,
@@ -258,13 +265,13 @@ where
}
/// Uses the slower full update
pub fn set_lut(&mut self) -> Result<(), E> {
self.set_lut_helper(&LUT_FULL_UPDATE)
pub fn set_lut(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
self.set_lut_helper(spi, &LUT_FULL_UPDATE)
}
/// Uses the quick partial refresh
pub fn set_lut_quick(&mut self) -> Result<(), E> {
self.set_lut_helper(&LUT_PARTIAL_UPDATE)
pub fn set_lut_quick(&mut self, spi: &mut SPI) -> Result<(), SPI::Error> {
self.set_lut_helper(spi, &LUT_PARTIAL_UPDATE)
}
//TODO: assert length for LUT is exactly 30
@@ -272,9 +279,9 @@ where
// self.set_lut_helper(buffer)
//}
fn set_lut_helper(&mut self, buffer: &[u8]) -> Result<(), E> {
fn set_lut_helper(&mut self, spi: &mut SPI, buffer: &[u8]) -> Result<(), SPI::Error> {
assert!(buffer.len() == 30);
self.interface.cmd_with_data(Command::WRITE_LUT_REGISTER, buffer)
self.interface.cmd_with_data(spi, Command::WRITE_LUT_REGISTER, buffer)
}
}