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use crate::hal::{
blocking::delay::{DelayMs, DelayUs},
digital::v2::OutputPin,
};
use crate::{
hal, mode, ActionInProgress, BitFlags, Ccs811, Ccs811Awake, Ccs811BootMode, Ccs811Device,
Error, ErrorAwake, ModeChangeError, Register,
};
use nb;
impl<I2C, E> Ccs811BootMode for Ccs811Awake<I2C, mode::Boot>
where
I2C: hal::blocking::i2c::Write<Error = E> + hal::blocking::i2c::WriteRead<Error = E>,
{
type Error = ErrorAwake<E>;
type ModeChangeError = ModeChangeError<Self::Error, Self>;
type TargetType = Ccs811Awake<I2C, mode::App>;
fn start_application(mut self) -> Result<Self::TargetType, Self::ModeChangeError> {
match self.has_valid_app() {
Err(e) => Err(ModeChangeError::new(self, e)),
Ok(is_valid) => {
if !is_valid {
Err(ModeChangeError::new(self, ErrorAwake::NoValidApp))
} else {
match self.write_register_no_data(Register::APP_START) {
Err(e) => Err(ModeChangeError::new(self, e)),
Ok(_) => Ok(Ccs811Awake::create(self.i2c, self.address)),
}
}
}
}
}
fn verify_application(&mut self) -> nb::Result<(), Self::Error> {
let status = self.read_status().map_err(nb::Error::Other)?;
let verified = (status & BitFlags::APP_VERIFY) != 0;
if !verified {
if self.in_progress == ActionInProgress::Verification {
Err(nb::Error::WouldBlock)
} else {
let result = self
.i2c
.write(self.address, &[Register::APP_VERIFY])
.map_err(ErrorAwake::I2C);
match result {
Ok(_) => {
self.in_progress = ActionInProgress::Verification;
Err(nb::Error::WouldBlock)
}
Err(e) => Err(nb::Error::Other(e)),
}
}
} else {
self.in_progress = ActionInProgress::None;
Ok(())
}
}
fn erase_application(&mut self) -> nb::Result<(), Self::Error> {
let status = self.read_status().map_err(nb::Error::Other)?;
let erased = (status & BitFlags::APP_ERASE) != 0;
if !erased {
if self.in_progress == ActionInProgress::Erase {
Err(nb::Error::WouldBlock)
} else {
let result = self
.i2c
.write(self.address, &[Register::APP_ERASE, 0xE7, 0xA7, 0xE6, 0x09])
.map_err(ErrorAwake::I2C);
match result {
Ok(_) => {
self.in_progress = ActionInProgress::Erase;
Err(nb::Error::WouldBlock)
}
Err(e) => Err(nb::Error::Other(e)),
}
}
} else {
self.in_progress = ActionInProgress::None;
Ok(())
}
}
fn download_application<D: DelayMs<u16>>(
&mut self,
bin: &[u8],
delay: &mut D,
) -> Result<(), Self::Error> {
if bin.len() % 8 != 0 {
return Err(ErrorAwake::InvalidInputData);
}
let mut data = [0; 9];
data[0] = Register::REG_BOOT_APP;
for chunk in bin.chunks(8) {
data[1..].copy_from_slice(chunk);
self.i2c
.write(self.address, &data)
.map_err(ErrorAwake::I2C)?;
delay.delay_ms(50);
}
self.check_status_error()
}
fn update_application<D: DelayMs<u16>>(
&mut self,
bin: &[u8],
delay: &mut D,
) -> Result<(), Self::Error> {
self.write_sw_reset()?;
delay.delay_ms(2);
match self.erase_application() {
Err(nb::Error::WouldBlock) => delay.delay_ms(500),
Err(nb::Error::Other(e)) => return Err(e),
Ok(_) => (),
}
loop {
match self.erase_application() {
Err(nb::Error::WouldBlock) => (),
Err(nb::Error::Other(e)) => return Err(e),
Ok(_) => break,
}
}
self.download_application(bin, delay)?;
match self.verify_application() {
Err(nb::Error::WouldBlock) => delay.delay_ms(70),
Err(nb::Error::Other(e)) => return Err(e),
Ok(_) => (),
}
loop {
match self.verify_application() {
Err(nb::Error::WouldBlock) => (),
Err(nb::Error::Other(e)) => return Err(e),
Ok(_) => break,
}
}
Ok(())
}
fn software_reset(&mut self) -> Result<(), Self::Error> {
self.write_sw_reset()
}
}
impl<I2C, CommE, PinE, NWAKE, WAKEDELAY> Ccs811BootMode
for Ccs811<I2C, NWAKE, WAKEDELAY, mode::Boot>
where
I2C: hal::blocking::i2c::Write<Error = CommE> + hal::blocking::i2c::WriteRead<Error = CommE>,
NWAKE: OutputPin<Error = PinE>,
WAKEDELAY: DelayUs<u8>,
{
type Error = Error<CommE, PinE>;
type ModeChangeError = ModeChangeError<Self::Error, Self>;
type TargetType = Ccs811<I2C, NWAKE, WAKEDELAY, mode::App>;
fn start_application(self) -> Result<Self::TargetType, Self::ModeChangeError> {
self.wrap_mode_change(|s| s.start_application())
}
fn verify_application(&mut self) -> nb::Result<(), Self::Error> {
self.on_awaken_nb(|s| s.dev.verify_application())
}
fn erase_application(&mut self) -> nb::Result<(), Self::Error> {
self.on_awaken_nb(|s| s.dev.erase_application())
}
fn download_application<D: DelayMs<u16>>(
&mut self,
bin: &[u8],
delay: &mut D,
) -> Result<(), Self::Error> {
self.on_awaken(|s| s.dev.download_application(bin, delay))
}
fn update_application<D: DelayMs<u16>>(
&mut self,
bin: &[u8],
delay: &mut D,
) -> Result<(), Self::Error> {
self.on_awaken(|s| s.dev.update_application(bin, delay))
}
fn software_reset(&mut self) -> Result<(), Self::Error> {
self.on_awaken(|s| s.dev.software_reset())
}
}