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Simplify reset and reduce delays

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This commit is contained in:
Grant Miller 2020-08-28 14:32:16 -05:00
parent 332aa05bc4
commit 2342655799
1 changed files with 20 additions and 16 deletions
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36
src/lib.rs
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@ -91,9 +91,22 @@ where
height: HEIGHT, height: HEIGHT,
}; };
ili9341.hard_reset(delay).map_err(Error::OutputPin)?; // Do hardware reset by holding reset low for at least 10us
ili9341.reset.set_low().map_err(Error::OutputPin)?;
delay.delay_ms(1);
// Set high for normal operation
ili9341.reset.set_high().map_err(Error::OutputPin)?;
// Wait 5ms after reset before sending commands
// and 120ms before sending Sleep Out
delay.delay_ms(5);
// Do software reset
ili9341.command(Command::SoftwareReset, &[])?; ili9341.command(Command::SoftwareReset, &[])?;
delay.delay_ms(200);
// Wait 5ms after reset before sending commands
// and 120ms before sending Sleep Out
delay.delay_ms(120);
ili9341.command(Command::PowerControlA, &[0x39, 0x2c, 0x00, 0x34, 0x02])?; ili9341.command(Command::PowerControlA, &[0x39, 0x2c, 0x00, 0x34, 0x02])?;
ili9341.command(Command::PowerControlB, &[0x00, 0xc1, 0x30])?; ili9341.command(Command::PowerControlB, &[0x00, 0xc1, 0x30])?;
@ -125,26 +138,17 @@ where
0x0f, 0x0f,
], ],
)?; )?;
ili9341.command(Command::SleepOut, &[])?; ili9341.command(Command::SleepOut, &[])?;
delay.delay_ms(120);
// Wait 5ms after Sleep Out before sending commands
delay.delay_ms(5);
ili9341.command(Command::DisplayOn, &[])?; ili9341.command(Command::DisplayOn, &[])?;
Ok(ili9341) Ok(ili9341)
} }
fn hard_reset<DELAY: DelayMs<u16>>(&mut self, delay: &mut DELAY) -> Result<(), PinE> {
// set high if previously low
self.reset.set_high()?;
delay.delay_ms(200);
// set low for reset
self.reset.set_low()?;
delay.delay_ms(200);
// set high for normal operation
self.reset.set_high()?;
delay.delay_ms(200);
Ok(())
}
fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), Error<PinE>> { fn command(&mut self, cmd: Command, args: &[u8]) -> Result<(), Error<PinE>> {
self.interface self.interface
.send_commands(U8Iter(&mut once(cmd as u8))) .send_commands(U8Iter(&mut once(cmd as u8)))