Merge pull request 'Several improvements' (#1) from simplified-api into main

Reviewed-on: #1

CHANGELOG.md

@@ -8,6 +8,20 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [unreleased]
 
+## [v0.2.0]
+
+### Added
+
+- Extended and improved type-level support significantly
+- Added implementation for externally clocked mode with wakeup delay
+- Added simple implementation for using CNVST pin. This is untested because board did not have
+  CNVST connected
+
+### Changed
+
+- Improved documentation
+- Made library easier to use
+
 ## [v0.1.1]
 
 - Added badges and some documentation and README tweaks

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "max116xx-10bit"
-version = "0.1.1"
+version = "0.2.0"
 authors = ["Robin Mueller <muellerr@irs.uni-stuttgart.de>"]
 edition = "2021"
 description = "Driver crate for the MAX116xx 10-bit ADC devices"

automation/Dockerfile

@@ -7,5 +7,6 @@ RUN apt-get --yes upgrade
 # tzdata is a dependency, won't install otherwise
 ARG DEBIAN_FRONTEND=noninteractive
 
-RUN rustup target add thumbv6m-none-eabi armv7-unknown-linux-gnueabihf && \
+RUN rustup target add thumbv6m-none-eabi armv7-unknown-linux-gnueabihf \
+	thumbv7em-none-eabihf x86_64-unknown-linux-gnu && \
 	rustup component add rustfmt clippy

automation/Jenkinsfile

@@ -34,18 +34,8 @@ pipeline {
             steps {
                 sh 'cargo check --target thumbv6m-none-eabi'
                 sh 'cargo check --target armv7-unknown-linux-gnueabihf'
-            }
-        }
-        stage('Check Examples') {
-            agent {
-                dockerfile {
-                    dir 'automation'
-                    reuseNode true
-                }
-            }
-            steps {
-                sh 'cargo check --target thumbv6m-none-eabi --examples'
-                sh 'cargo check --target armv7-unknown-linux-gnueabihf'
+                sh 'cargo check --target x86_64-unknown-linux-gnu'
+                sh 'cargo check --target thumbv7em-none-eabihf'
             }
         }
     }

src/lib.rs

@@ -1,13 +1,29 @@
-//! The crate uses basic type-level support to prevent using the ADC in a wrong way.
-//! The type-level support defaults to an externally clocked device with no wake-up delay.
+//! Type-Safe API to use the MAX116xx 10-bit ADC devices
+//!
+//! ## Usage
+//!
+//! You can create an initial ADC struct by using the [`Max116xx10Bit::max11618`],
+//! [`Max116xx10Bit::max11619`], [`Max116xx10Bit::max11620`], [`Max116xx10Bit::max11621`],
+//! [`Max116xx10Bit::max11624`] and [`Max116xx10Bit::max11625`] functionsdepending on which device
+//! you are using. This automatically sets the highest channel number accordingly.
+//!
+//! The default structs use the externally clocked mode with an external voltage reference.
+//! You can modify the operation mode of the ADC by converting the default struct using the
+//! following functions
+//!
+//!  - [`Max116xx10Bit::into_ext_clkd_with_int_ref_no_wakeup_delay`]
+//!  - [`Max116xx10Bit::into_ext_clkd_with_int_ref_wakeup_delay`]
+//!  - [`Max116xx10Bit::into_int_clkd_int_timed_through_ser_if_with_wakeup`]
+//!  - [`Max116xx10Bit::into_int_clkd_int_timed_through_ser_if_without_wakeup`]
 //!
 //! ## Examples
 //!
-//! You can find an example application [here](https://egit.irs.uni-stuttgart.de/rust/vorago-reb1/src/branch/main/src/max11619.rs)
-//! and [here](https://egit.irs.uni-stuttgart.de/rust/vorago-reb1/src/branch/main/examples/max11619-adc.rs)
+//! You can find an example application [here](https://egit.irs.uni-stuttgart.de/rust/vorago-reb1/src/branch/main/examples/max11619-adc.rs)
+//! using a [thin abstraction layer](https://egit.irs.uni-stuttgart.de/rust/vorago-reb1/src/branch/main/src/max11619.rs)
 #![no_std]
 use core::{marker::PhantomData, slice::IterMut};
 use embedded_hal::{
+    blocking::delay::DelayUs,
     blocking::spi::Transfer,
     digital::v2::{InputPin, OutputPin},
     spi::FullDuplex,
@@ -21,16 +37,29 @@ pub trait HasChannels: private::Sealed {
     const NUM: u8;
 }
 
-pub struct Max11618;
-pub struct Max11619;
-pub struct Max11620;
-pub struct Max11621;
-pub struct Max11624;
-pub struct Max11625;
+struct Max11618;
+struct Max11619;
+struct Max11620;
+struct Max11621;
+struct Max11624;
+struct Max11625;
 
 pub struct WithWakeupDelay;
 pub struct WithoutWakeupDelay;
 
+pub trait WakeupDelay: private::Sealed {
+    const ON: bool;
+}
+
+impl WakeupDelay for WithWakeupDelay {
+    const ON: bool = true;
+}
+impl private::Sealed for WithWakeupDelay {}
+impl WakeupDelay for WithoutWakeupDelay {
+    const ON: bool = false;
+}
+impl private::Sealed for WithoutWakeupDelay {}
+
 impl private::Sealed for Max11618 {}
 impl HasChannels for Max11618 {
     const NUM: u8 = 4;
@@ -73,6 +102,7 @@ impl Clocked for InternallyClockedInternallyTimedCnvst {
     const CLK_SEL: ClockMode = ClockMode::InternalClockInternallyTimedCnvst;
 }
 impl InternallyClocked for InternallyClockedInternallyTimedCnvst {}
+type IntClkdIntTmdCnvst = InternallyClockedInternallyTimedCnvst;
 
 pub struct InternallyClockedExternallyTimedCnvst {}
 impl private::Sealed for InternallyClockedExternallyTimedCnvst {}
@@ -80,6 +110,7 @@ impl Clocked for InternallyClockedExternallyTimedCnvst {
     const CLK_SEL: ClockMode = ClockMode::InternalClockExternallyTimedCnvst;
 }
 impl InternallyClocked for InternallyClockedExternallyTimedCnvst {}
+type IntClkdExtTmdCnvst = InternallyClockedExternallyTimedCnvst;
 
 pub struct InternallyClockedInternallyTimedSerialInterface {}
 impl private::Sealed for InternallyClockedInternallyTimedSerialInterface {}
@@ -87,40 +118,38 @@ impl Clocked for InternallyClockedInternallyTimedSerialInterface {
     const CLK_SEL: ClockMode = ClockMode::InternalClockInternallyTimedSerialInterface;
 }
 impl InternallyClocked for InternallyClockedInternallyTimedSerialInterface {}
+type IntClkdIntTmdSerIF = InternallyClockedInternallyTimedSerialInterface;
 
 pub struct ExternallyClocked {}
 impl private::Sealed for ExternallyClocked {}
 impl Clocked for ExternallyClocked {
     const CLK_SEL: ClockMode = ClockMode::ExternalClockExternallyTimedSclk;
 }
+type ExtClkd = ExternallyClocked;
 
 //==================================================================================================
 // Definitions
 //==================================================================================================
 
-#[derive(Debug, PartialEq)]
-pub enum PendingOp {
-    None,
-    SingleChannel,
-    MultiChannel,
-}
-
 /// Clock modes for the MAX116XX devices
 #[derive(Debug, PartialEq, Clone, Copy)]
 pub enum ClockMode {
+    /// Internally timed, CNVST only needs to be pulsed for 40ns.
     /// CNVST Configuration: CNVST active low
     InternalClockInternallyTimedCnvst = 0b00,
-    /// Externally timed through CNVST. CNVST Configuration: CNVST active low
+    /// Externally timed through CNVST. CNVST needs to be held low for the conversion duration,
+    /// whigh might include the wake-up delay. CNVST Configuration: CNVST active low
     InternalClockExternallyTimedCnvst = 0b01,
+    /// Start conversions using the serial interface instead of CNVST.
     /// Default mode at power-up. CNVST Configuration: AIN15/AIN11/AIN7
-    /// Start conversions using the serial interface instead of CNVST
     InternalClockInternallyTimedSerialInterface = 0b10,
+    /// Use the SPI clock as the conversion clock
     ExternalClockExternallyTimedSclk = 0b11,
 }
 
 /// Voltage reference modes
 #[derive(Debug, PartialEq, Clone, Copy)]
-pub enum RefMode {
+pub enum VoltageRefMode {
     /// Auto-Shutdown is on, wake-up delay of 65 us
     InternalRefWithWakeupDelay = 0b00,
     ExternalSingleEndedNoWakeupDelay = 0b01,
@@ -138,6 +167,7 @@ pub enum AveragingConversions {
 }
 
 /// Specifies the number of returned result in single scan mode
+#[derive(Debug, PartialEq, Clone, Copy)]
 pub enum AveragingResults {
     FourResults = 0b00,
     EightResults = 0b01,
@@ -145,18 +175,21 @@ pub enum AveragingResults {
     SixteenResults = 0b11,
 }
 
+#[derive(Debug, PartialEq, Clone, Copy)]
 pub enum ScanMode {
     Scan0ToChannelN = 0b00,
     ScanChannelNToHighest = 0b01,
-    ScanChnanelNRepeatedly = 0b10,
+    ScanChannelNRepeatedly = 0b10,
     ConvertChannelNOnce = 0b11,
 }
 
 #[derive(Debug)]
 pub enum AdcError {
     InvalidChannel,
+    InvalidRefMode,
     CmdBufTooSmall,
     ResulBufTooSmall,
+    /// Other pending operation (possible of other type)
     PendingOperation,
     NoPendingOperation,
     InvalidClockMode,
@@ -175,49 +208,202 @@ impl<SpiE, PinE> From<AdcError> for Error<SpiE, PinE> {
     }
 }
 
+struct InternalCfg {
+    clk_mode: ClockMode,
+    ref_mode: VoltageRefMode,
+    pending_scan_mode: Option<ScanMode>,
+    max_channels: u8,
+    results_len: u8,
+    requested_conversions: usize,
+}
 //==================================================================================================
-// ADc implementation
+// ADC implementation
 //==================================================================================================
 
-pub struct Max116xx10Bit<
-    SPI,
-    CS,
-    MAX: HasChannels,
-    CLOCKED = ExternallyClocked,
-    DELAY = WithoutWakeupDelay,
-> {
-    clk_mode: ClockMode,
-    ref_mode: RefMode,
+pub struct Max116xx10Bit<SPI, CS, CLOCKED = ExtClkd, WAKEUP = WithoutWakeupDelay> {
     spi: SPI,
     cs: CS,
-    pending_op: PendingOp,
-    max: PhantomData<MAX>,
+    cfg: InternalCfg,
     clocked: PhantomData<CLOCKED>,
-    delay: PhantomData<DELAY>,
+    delay: PhantomData<WAKEUP>,
 }
 
-impl<SpiE, PinE, CS, SPI, MAX: HasChannels, CLOCKED: Clocked, DELAY>
-    Max116xx10Bit<SPI, CS, MAX, CLOCKED, DELAY>
+pub struct Max116xx10BitEocExt<SPI, CS, EOC, CLOCKED> {
+    base: Max116xx10Bit<SPI, CS, CLOCKED, WithoutWakeupDelay>,
+    eoc: EOC,
+}
+
+pub struct Max116xx10BitCnvstEocExt<SPI, CS, EOC, CNVST, CLOCKED, WAKEUP = WithoutWakeupDelay> {
+    base: Max116xx10Bit<SPI, CS, CLOCKED, WAKEUP>,
+    eoc: EOC,
+    cnvst: CNVST,
+}
+
+//==================================================================================================
+// Generic
+//==================================================================================================
+
+impl<SpiE, PinE, CS, SPI> Max116xx10Bit<SPI, CS, ExtClkd, WithoutWakeupDelay>
 where
     SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
     CS: OutputPin<Error = PinE>,
 {
-    /// Create a new generic MAX116xx instance.
-    pub fn new(spi: SPI, cs: CS, ref_mode: RefMode) -> Result<Self, Error<SpiE, PinE>> {
-        let mut max_dev = Max116xx10Bit {
-            clk_mode: CLOCKED::CLK_SEL,
-            ref_mode,
+    pub fn max11618(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11618>(spi, cs)
+    }
+    pub fn max11619(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11619>(spi, cs)
+    }
+    pub fn max11620(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11620>(spi, cs)
+    }
+    pub fn max11621(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11621>(spi, cs)
+    }
+    pub fn max11624(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11624>(spi, cs)
+    }
+    pub fn max11625(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        Self::new::<Max11625>(spi, cs)
+    }
+
+    /// Create a new generic MAX116xx instance. By default the generated ADC struct is configured
+    /// for externally clocked mode with conversions timed through the serial interface and
+    /// an external voltage reference. You can convert the ADC to use other SETUP register
+    /// configurations using the `into*` functions.
+    ///
+    /// The corresponding SETUP register is `0b0111_0100`
+    /// Please note that you still might have to reset and setup the ADC.
+    pub fn new<MAX: HasChannels>(spi: SPI, cs: CS) -> Result<Self, Error<SpiE, PinE>> {
+        let max_dev = Max116xx10Bit {
             spi,
             cs,
-            pending_op: PendingOp::None,
-            max: PhantomData,
+            cfg: InternalCfg {
+                clk_mode: ExtClkd::CLK_SEL,
+                ref_mode: VoltageRefMode::ExternalSingleEndedNoWakeupDelay,
+                pending_scan_mode: None,
+                max_channels: MAX::NUM,
+                results_len: Self::get_results_len(AveragingResults::FourResults),
+                requested_conversions: 0,
+            },
             delay: PhantomData,
             clocked: PhantomData,
         };
-        max_dev.setup()?;
         Ok(max_dev)
     }
 
+    /// Use internal reference which is off after scan. This means that the device needs a wakeup
+    /// delay
+    ///
+    /// The corresponding SETUP register is `0b0111_0000`
+    pub fn into_ext_clkd_with_int_ref_wakeup_delay(
+        self,
+    ) -> Max116xx10Bit<SPI, CS, ExtClkd, WithWakeupDelay> {
+        Max116xx10Bit {
+            spi: self.spi,
+            cs: self.cs,
+            cfg: InternalCfg {
+                clk_mode: ExtClkd::CLK_SEL,
+                ref_mode: VoltageRefMode::InternalRefWithWakeupDelay,
+                pending_scan_mode: None,
+                max_channels: self.cfg.max_channels,
+                results_len: Self::get_results_len(AveragingResults::FourResults),
+                requested_conversions: 0,
+            },
+            clocked: PhantomData,
+            delay: PhantomData,
+        }
+    }
+
+    /// Use SPI clock as conversion clock and use the internal voltage reference without a wakeup
+    /// delay
+    ///
+    /// The corresponding SETUP register is `0b0111_1000`
+    pub fn into_ext_clkd_with_int_ref_no_wakeup_delay(
+        self,
+    ) -> Max116xx10Bit<SPI, CS, ExtClkd, WithoutWakeupDelay> {
+        Max116xx10Bit {
+            spi: self.spi,
+            cs: self.cs,
+            cfg: InternalCfg {
+                clk_mode: ExtClkd::CLK_SEL,
+                ref_mode: VoltageRefMode::InternalRefWithoutWakeupDelay,
+                pending_scan_mode: None,
+                max_channels: self.cfg.max_channels,
+                results_len: Self::get_results_len(AveragingResults::FourResults),
+                requested_conversions: 0,
+            },
+            clocked: PhantomData,
+            delay: PhantomData,
+        }
+    }
+
+    /// Convert into interally clocked mode with internal timing initiated by the serial interface
+    /// and a wakeup delay. This can be used to reduce power consumption
+    ///
+    /// The corresponding SETUP register is `0b0110_1100`
+    pub fn into_int_clkd_int_timed_through_ser_if_with_wakeup<EOC: InputPin<Error = PinE>>(
+        self,
+        eoc: EOC,
+    ) -> Max116xx10BitEocExt<SPI, CS, EOC, IntClkdIntTmdSerIF> {
+        Max116xx10BitEocExt {
+            base: Max116xx10Bit {
+                spi: self.spi,
+                cs: self.cs,
+                cfg: InternalCfg {
+                    clk_mode: IntClkdIntTmdSerIF::CLK_SEL,
+                    ref_mode: VoltageRefMode::InternalRefWithWakeupDelay,
+                    pending_scan_mode: None,
+                    max_channels: self.cfg.max_channels,
+                    results_len: Self::get_results_len(AveragingResults::FourResults),
+                    requested_conversions: 0,
+                },
+                clocked: PhantomData,
+                delay: PhantomData,
+            },
+            eoc,
+        }
+    }
+
+    /// Convert into interally clocked mode with internal timing initiated by the serial interface
+    /// and no wakeup delay.
+    ///
+    /// The corresponding SETUP register can be one of the two
+    ///  - External Voltage reference: `0b0110_0100`
+    ///  - Internal Voltage reference always on: `0b0110_1000`
+    pub fn into_int_clkd_int_timed_through_ser_if_without_wakeup<EOC: InputPin<Error = PinE>>(
+        self,
+        v_ref: VoltageRefMode,
+        eoc: EOC,
+    ) -> Result<Max116xx10BitEocExt<SPI, CS, EOC, IntClkdIntTmdSerIF>, AdcError> {
+        if v_ref == VoltageRefMode::InternalRefWithWakeupDelay {
+            return Err(AdcError::InvalidRefMode);
+        }
+        Ok(Max116xx10BitEocExt {
+            base: Max116xx10Bit {
+                spi: self.spi,
+                cs: self.cs,
+                cfg: InternalCfg {
+                    clk_mode: IntClkdIntTmdSerIF::CLK_SEL,
+                    ref_mode: VoltageRefMode::InternalRefWithWakeupDelay,
+                    pending_scan_mode: None,
+                    max_channels: self.cfg.max_channels,
+                    results_len: Self::get_results_len(AveragingResults::FourResults),
+                    requested_conversions: 0,
+                },
+                clocked: PhantomData,
+                delay: PhantomData,
+            },
+            eoc,
+        })
+    }
+}
+
+impl<SpiE, PinE, CS, SPI, CLOCKED: Clocked, WAKEUP> Max116xx10Bit<SPI, CS, CLOCKED, WAKEUP>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+{
     #[inline]
     fn send_wrapper(&mut self, byte: u8) -> Result<(), Error<SpiE, PinE>> {
         self.cs.set_low().map_err(Error::Pin)?;
@@ -226,22 +412,26 @@ where
         Ok(())
     }
 
+    /// Set up the ADC depending on clock and reference configuration
     #[inline]
     pub fn setup(&mut self) -> Result<(), Error<SpiE, PinE>> {
         self.send_wrapper(self.get_setup_byte())
     }
 
+    /// Set up the Averaging register. This sets the AVGON, NAVG1, NAVG0, NSCAN1 and NSCAN0
+    /// bits accordingly
     #[inline]
     pub fn averaging(
         &mut self,
         avg_conv: AveragingConversions,
         avg_res: AveragingResults,
     ) -> Result<(), Error<SpiE, PinE>> {
+        self.cfg.results_len = Self::get_results_len(avg_res);
         self.send_wrapper(Self::get_averaging_byte(avg_conv, avg_res))
     }
 
     #[inline]
-    pub fn reset_adc(&mut self, fifo_only: bool) -> Result<(), Error<SpiE, PinE>> {
+    pub fn reset(&mut self, fifo_only: bool) -> Result<(), Error<SpiE, PinE>> {
         let mut reset_byte = 0b0001_0000;
         if fifo_only {
             reset_byte |= 1 << 3;
@@ -251,7 +441,7 @@ where
 
     #[inline]
     pub fn get_setup_byte(&self) -> u8 {
-        ((1 << 6) as u8) | ((self.clk_mode as u8) << 4) | ((self.ref_mode as u8) << 2)
+        ((1 << 6) as u8) | ((self.cfg.clk_mode as u8) << 4) | ((self.cfg.ref_mode as u8) << 2)
     }
 
     #[inline]
@@ -260,75 +450,41 @@ where
     }
 
     #[inline]
-    pub fn get_conversion_byte(scan_mode: ScanMode, channel_num: u8) -> Result<u8, AdcError> {
-        if channel_num > MAX::NUM {
+    pub fn get_results_len(avg_res: AveragingResults) -> u8 {
+        (avg_res as u8 + 1) * 4
+    }
+
+    #[inline]
+    pub fn get_conversion_byte(
+        &self,
+        scan_mode: ScanMode,
+        channel_num: u8,
+    ) -> Result<u8, AdcError> {
+        if channel_num > self.cfg.max_channels {
             return Err(AdcError::InvalidChannel);
         }
         Ok((1 << 7) | (channel_num << 3) | ((scan_mode as u8) << 1))
     }
-}
-impl<SpiE, PinE, SPI, CS, MAX: HasChannels>
-    Max116xx10Bit<SPI, CS, MAX, InternallyClockedInternallyTimedSerialInterface, WithoutWakeupDelay>
-where
-    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
-    CS: OutputPin<Error = PinE>,
-{
-    #[inline]
-    fn request_wrapper(
+
+    /// Generic function which can be used a single result is available
+    /// when EOC is low
+    fn internal_read_single_channel<EOC: InputPin<Error = PinE>>(
         &mut self,
-        channel_num: u8,
-        scan_mode: ScanMode,
-        op_type: PendingOp,
-    ) -> Result<(), Error<SpiE, PinE>> {
-        if self.pending_op != PendingOp::None {
-            return Err(Error::Adc(AdcError::PendingOperation));
-        }
-        let conv_byte = Self::get_conversion_byte(scan_mode, channel_num).map_err(Error::Adc)?;
-        self.send_wrapper(conv_byte)?;
-        self.pending_op = op_type;
-        Ok(())
-    }
-
-    pub fn request_single_channel(&mut self, channel_num: u8) -> Result<(), Error<SpiE, PinE>> {
-        self.request_wrapper(
-            channel_num,
-            ScanMode::ConvertChannelNOnce,
-            PendingOp::SingleChannel,
-        )
-    }
-
-    pub fn request_multiple_channels_0_to_n(&mut self, n: u8) -> Result<(), Error<SpiE, PinE>> {
-        self.request_wrapper(n, ScanMode::Scan0ToChannelN, PendingOp::MultiChannel)
-    }
-
-    pub fn request_multiple_channels_n_to_highest(
-        &mut self,
-        n: u8,
-    ) -> Result<(), Error<SpiE, PinE>> {
-        self.request_wrapper(n, ScanMode::ScanChannelNToHighest, PendingOp::MultiChannel)
-    }
-
-    pub fn get_single_channel<I: InputPin<Error = PinE>>(
-        &mut self,
-        eoc_pin: &mut I,
+        eoc: &mut EOC,
     ) -> nb::Result<u16, Error<SpiE, PinE>> {
-        if self.pending_op != PendingOp::SingleChannel {
+        if self.cfg.pending_scan_mode.is_none() {
             return Err(nb::Error::Other(Error::Adc(AdcError::NoPendingOperation)));
+        } else if self.cfg.pending_scan_mode != Some(ScanMode::ConvertChannelNOnce) {
+            return Err(nb::Error::Other(Error::Adc(AdcError::PendingOperation)));
         }
-        let is_low = match eoc_pin.is_low() {
-            Ok(low) => low,
-            Err(e) => {
-                return Err(nb::Error::Other(Error::Pin(e)));
-            }
-        };
-        if is_low {
+        if eoc.is_low().map_err(Error::Pin)? {
             let mut dummy_cmd: [u8; 2] = [0; 2];
             self.cs.set_low().map_err(Error::Pin)?;
             let transfer_result = self.spi.transfer(&mut dummy_cmd);
             self.cs.set_high().map_err(Error::Pin)?;
             match transfer_result {
                 Ok(reply) => {
-                    self.pending_op = PendingOp::None;
+                    self.cfg.pending_scan_mode = None;
                     Ok(((reply[0] as u16) << 6) | (reply[1] as u16 >> 2))
                 }
                 Err(e) => Err(nb::Error::Other(Error::Spi(e))),
@@ -339,8 +495,62 @@ where
     }
 }
 
-impl<SpiE, PinE, SPI, CS, MAX: HasChannels>
-    Max116xx10Bit<SPI, CS, MAX, ExternallyClocked, WithoutWakeupDelay>
+macro_rules! ext_impl {
+    () => {
+        /// Set up the ADC depending on clock and reference configuration
+        #[inline]
+        pub fn setup(&mut self) -> Result<(), Error<SpiE, PinE>> {
+            self.base.send_wrapper(self.base.get_setup_byte())
+        }
+
+        /// Set up the Averaging register. This sets the AVGON, NAVG1, NAVG0, NSCAN1 and NSCAN0
+        /// bits accordingly
+        #[inline]
+        pub fn averaging(
+            &mut self,
+            avg_conv: AveragingConversions,
+            avg_res: AveragingResults,
+        ) -> Result<(), Error<SpiE, PinE>> {
+            self.base.cfg.results_len = Max116xx10Bit::<SPI, CS, CLOCKED>::get_results_len(avg_res);
+            self.base
+                .send_wrapper(Max116xx10Bit::<SPI, CS, CLOCKED>::get_averaging_byte(
+                    avg_conv, avg_res,
+                ))
+        }
+
+        #[inline]
+        pub fn reset(&mut self, fifo_only: bool) -> Result<(), Error<SpiE, PinE>> {
+            let mut reset_byte = 0b0001_0000;
+            if fifo_only {
+                reset_byte |= 1 << 3;
+            }
+            self.base.send_wrapper(reset_byte)
+        }
+    };
+}
+impl<SpiE, PinE, CS, SPI, EOC, CLOCKED: Clocked> Max116xx10BitEocExt<SPI, CS, EOC, CLOCKED>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+{
+    ext_impl!();
+}
+
+impl<SpiE, PinE, CS, SPI, EOC, CNVST, CLOCKED: Clocked, DELAY>
+    Max116xx10BitCnvstEocExt<SPI, CS, EOC, CNVST, CLOCKED, DELAY>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+{
+    ext_impl!();
+}
+
+//==================================================================================================
+// External SPI clock used
+//==================================================================================================
+
+/// Implementations when using the external SPI clock to time the conversions
+impl<SpiE, PinE, SPI, CS> Max116xx10Bit<SPI, CS, ExtClkd, WithoutWakeupDelay>
 where
     SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
     CS: OutputPin<Error = PinE>,
@@ -353,13 +563,7 @@ where
         if buf.len() < 3 {
             return Err(Error::Adc(AdcError::CmdBufTooSmall));
         }
-
-        match Self::get_conversion_byte(ScanMode::ConvertChannelNOnce, channel_num) {
-            Ok(byte) => buf[0] = byte,
-            Err(e) => {
-                return Err(Error::Adc(e));
-            }
-        };
+        buf[0] = self.get_conversion_byte(ScanMode::ConvertChannelNOnce, channel_num)?;
         buf[1] = 0x00;
         buf[2] = 0x00;
         self.cs.set_low().map_err(Error::Pin)?;
@@ -378,7 +582,7 @@ where
         let mut next_byte: &mut u8;
         for idx in 0..n + 1 {
             next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
-            *next_byte = Self::get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
+            *next_byte = self.get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
             next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
             *next_byte = 0x00;
         }
@@ -411,13 +615,13 @@ where
     ) -> Result<(), Error<SpiE, PinE>> {
         let mut iter = buf.iter_mut();
         let mut next_byte: &mut u8;
-        if n > MAX::NUM - 1 {
+        if n > self.cfg.max_channels - 1 {
             return Err(Error::Adc(AdcError::InvalidChannel));
         }
-        let conversions = MAX::NUM - n;
-        for idx in n..MAX::NUM {
+        let conversions = self.cfg.max_channels - n;
+        for idx in n..self.cfg.max_channels {
             next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
-            *next_byte = Self::get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
+            *next_byte = self.get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
             next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
             *next_byte = 0x00;
         }
@@ -443,6 +647,299 @@ where
     }
 }
 
+/// Implementations when using the external SPI clock to time the conversions but also requiring
+/// a wakeup delay
+impl<SpiE, PinE, SPI, CS> Max116xx10Bit<SPI, CS, ExtClkd, WithWakeupDelay>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+{
+    pub fn read_single_channel<DELAY: DelayUs<u8>>(
+        &mut self,
+        buf: &mut [u8],
+        channel_num: u8,
+        delay: &mut DELAY,
+    ) -> Result<u16, Error<SpiE, PinE>> {
+        if buf.len() < 3 {
+            return Err(Error::Adc(AdcError::CmdBufTooSmall));
+        }
+        buf[0] = self
+            .get_conversion_byte(ScanMode::ConvertChannelNOnce, channel_num)
+            .map_err(Error::Adc)?;
+        self.send_wrapper(buf[0])?;
+        delay.delay_us(65);
+        buf[0] = 0x00;
+        buf[1] = 0x00;
+        self.cs.set_low().map_err(Error::Pin)?;
+        let reply = self.spi.transfer(&mut buf[0..2]).map_err(Error::Spi)?;
+        self.cs.set_high().map_err(Error::Pin)?;
+        Ok(((reply[0] as u16) << 6) | (reply[1] as u16 >> 2))
+    }
+
+    pub fn read_multiple_channels_0_to_n<DELAY: DelayUs<u8>>(
+        &mut self,
+        buf: &mut [u8],
+        result_iter: &mut IterMut<u16>,
+        n: u8,
+        delay: &mut DELAY,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        let mut iter = buf.iter_mut();
+        let mut next_byte: &mut u8;
+        for idx in 0..n + 1 {
+            next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+            *next_byte = self.get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
+            next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+            *next_byte = 0x00;
+        }
+        next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+        *next_byte = 0x00;
+        // Write first conversion byte and then wait 65 us to allow internal reference to power up
+        self.send_wrapper(buf[0])?;
+        delay.delay_us(65);
+
+        self.cs.set_low().map_err(Error::Pin)?;
+        let reply = self
+            .spi
+            .transfer(&mut buf[1..((n + 1) * 2 + 1) as usize])
+            .map_err(Error::Spi)?;
+        self.cs.set_high().map_err(Error::Pin)?;
+        let mut reply_iter = reply.iter();
+        for _ in 0..n + 1 {
+            let next_res = result_iter
+                .next()
+                .ok_or(Error::Adc(AdcError::ResulBufTooSmall))?;
+            *next_res = ((*reply_iter.next().unwrap() as u16) << 6)
+                | (*reply_iter.next().unwrap() as u16 >> 2);
+        }
+        Ok(())
+    }
+
+    pub fn read_multiple_channels_n_to_highest<DELAY: DelayUs<u8>>(
+        &mut self,
+        buf: &mut [u8],
+        result_iter: &mut IterMut<u16>,
+        n: u8,
+        delay: &mut DELAY,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        let mut iter = buf.iter_mut();
+        let mut next_byte: &mut u8;
+        if n > self.cfg.max_channels - 1 {
+            return Err(Error::Adc(AdcError::InvalidChannel));
+        }
+        let conversions = self.cfg.max_channels - n;
+        for idx in n..self.cfg.max_channels {
+            next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+            *next_byte = self.get_conversion_byte(ScanMode::ConvertChannelNOnce, idx)?;
+            next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+            *next_byte = 0x00;
+        }
+        next_byte = iter.next().ok_or(Error::Adc(AdcError::CmdBufTooSmall))?;
+        *next_byte = 0x00;
+        // Write first conversion byte and then wait 65 us with CS high to allow internal
+        // reference to power up
+        self.send_wrapper(buf[0])?;
+        delay.delay_us(65);
+        self.cs.set_low().map_err(Error::Pin)?;
+        let reply = self
+            .spi
+            .transfer(&mut buf[1..(conversions * 2 + 1) as usize])
+            .map_err(Error::Spi)?;
+        self.cs.set_high().map_err(Error::Pin)?;
+        let mut reply_iter = reply.iter();
+        for _ in 0..conversions {
+            let next_res = result_iter
+                .next()
+                .ok_or(Error::Adc(AdcError::ResulBufTooSmall))?;
+            *next_res = ((*reply_iter.next().unwrap() as u16) << 6)
+                | (*reply_iter.next().unwrap() as u16 >> 2);
+        }
+        Ok(())
+    }
+}
+
+//==================================================================================================
+// Internal clock, EOC pin used
+//==================================================================================================
+
+/// Implementations when using the internal clock with a conversion started
+/// through the serial interface
+impl<SpiE, PinE, SPI, CS, EOC> Max116xx10BitEocExt<SPI, CS, EOC, IntClkdIntTmdSerIF>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+    EOC: InputPin<Error = PinE>,
+{
+    #[inline]
+    fn request_wrapper(
+        &mut self,
+        channel_num: u8,
+        scan_mode: ScanMode,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        if self.base.cfg.pending_scan_mode.is_some() {
+            return Err(Error::Adc(AdcError::PendingOperation));
+        }
+        let conv_byte = self
+            .base
+            .get_conversion_byte(scan_mode, channel_num)
+            .map_err(Error::Adc)?;
+        self.base.send_wrapper(conv_byte)?;
+        self.base.cfg.pending_scan_mode = Some(scan_mode);
+        Ok(())
+    }
+
+    pub fn request_single_channel(&mut self, channel_num: u8) -> Result<(), Error<SpiE, PinE>> {
+        self.request_wrapper(channel_num, ScanMode::ConvertChannelNOnce)
+    }
+
+    /// Request a channel repeatedly, using scan mode 10. The number of scans is determined
+    /// by the averaging register NSCAN0 and NSCAN1 configuration which can be configured
+    /// with the [`averaging`](Max116xx10Bit::averaging) function
+    pub fn request_channel_n_repeatedly(
+        &mut self,
+        channel_num: u8,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        self.request_wrapper(channel_num, ScanMode::ScanChannelNRepeatedly)
+    }
+
+    pub fn request_multiple_channels_0_to_n(&mut self, n: u8) -> Result<(), Error<SpiE, PinE>> {
+        self.base.cfg.requested_conversions = n as usize + 1;
+        self.request_wrapper(n, ScanMode::Scan0ToChannelN)
+    }
+
+    pub fn request_multiple_channels_n_to_highest(
+        &mut self,
+        n: u8,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        self.base.cfg.requested_conversions = self.base.cfg.max_channels as usize + 1 - n as usize;
+        self.request_wrapper(n, ScanMode::ScanChannelNToHighest)
+    }
+
+    /// This function is used to retrieve the results for a single byte request. The EOC pin
+    /// needs to be passed explicitely here.
+    /// If no request was made, [AdcError::NoPendingOperation] is returned.
+    /// If a request was made for multipel results, [AdcError::PendingOperation] will be returned.
+    pub fn get_single_channel(&mut self) -> nb::Result<u16, Error<SpiE, PinE>> {
+        self.base.internal_read_single_channel(&mut self.eoc)
+    }
+
+    /// This function is used to retrieve the results for all functions requesting multiple
+    /// bytes. If no request was made, [AdcError::NoPendingOperation] is returned.
+    /// If a request was made for a single channel, [AdcError::PendingOperation] will be returned.
+    pub fn get_multi_channel(
+        &mut self,
+        result_iter: &mut IterMut<u16>,
+    ) -> nb::Result<(), Error<SpiE, PinE>> {
+        if self.base.cfg.pending_scan_mode.is_none() {
+            return Err(nb::Error::Other(Error::Adc(AdcError::NoPendingOperation)));
+        } else if self.base.cfg.pending_scan_mode == Some(ScanMode::ConvertChannelNOnce) {
+            return Err(nb::Error::Other(Error::Adc(AdcError::PendingOperation)));
+        }
+        if self.eoc.is_low().map_err(Error::Pin)? {
+            // maximum length of reply is 32 for 16 channels
+            let mut dummy_cmd: [u8; 32] = [0; 32];
+            let num_conv: usize;
+            if self.base.cfg.pending_scan_mode == Some(ScanMode::ScanChannelNRepeatedly) {
+                num_conv = self.base.cfg.results_len as usize;
+            } else {
+                num_conv = self.base.cfg.requested_conversions;
+            }
+            self.base.cfg.pending_scan_mode = None;
+            self.base.cfg.requested_conversions = 0;
+            self.base.cs.set_low().map_err(Error::Pin)?;
+            let transfer_result = self.base.spi.transfer(&mut dummy_cmd[0..(num_conv * 2)]);
+            self.base.cs.set_high().map_err(Error::Pin)?;
+            match transfer_result {
+                Ok(reply) => {
+                    let mut reply_iter = reply.iter();
+                    for _ in 0..num_conv {
+                        let next_res = result_iter
+                            .next()
+                            .ok_or(Error::Adc(AdcError::ResulBufTooSmall))?;
+                        *next_res = ((*reply_iter.next().unwrap() as u16) << 6)
+                            | (*reply_iter.next().unwrap() as u16 >> 2);
+                    }
+                    Ok(())
+                }
+                Err(e) => Err(nb::Error::Other(Error::Spi(e))),
+            }
+        } else {
+            Err(nb::Error::WouldBlock)
+        }
+    }
+}
+
+//==================================================================================================
+// Internal clock, CNVST and EOC pin used
+//==================================================================================================
+
+/// Implementations when using the internal clock where CNVST is held low for the duration
+/// of the conversion
+///
+/// TODO: Implement. Unfortunately, the test board used to verify this library did not have
+/// the CNVST connected, so I wouldn't be able to test an implementation easily.
+impl<SpiE, PinE, SPI, CS, EOC, CNVST>
+    Max116xx10BitCnvstEocExt<SPI, CS, EOC, CNVST, IntClkdExtTmdCnvst, WithoutWakeupDelay>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+    EOC: InputPin<Error = PinE>,
+    CNVST: OutputPin<Error = PinE>,
+{
+    pub fn dummy() {
+        todo!("Implement this")
+    }
+}
+
+/// Implementations when using the internal clock where CNVST is only pulsed to start acquisition
+/// and conversion
+///
+/// TODO: Test. Unfortunately, the test board used to verify this library did not have
+/// the CNVST connected, so I wouldn't be able to test an implementation easily.
+impl<SpiE, PinE, SPI, CS, EOC, CNVST>
+    Max116xx10BitCnvstEocExt<SPI, CS, EOC, CNVST, IntClkdIntTmdCnvst, WithWakeupDelay>
+where
+    SPI: Transfer<u8, Error = SpiE> + FullDuplex<u8, Error = SpiE>,
+    CS: OutputPin<Error = PinE>,
+    EOC: InputPin<Error = PinE>,
+    CNVST: OutputPin<Error = PinE>,
+{
+    /// The pulse needs to be at least 40ns. A pulse cycle value can be used to increase
+    /// the width of the pulse
+    pub fn request_single_channel(
+        &mut self,
+        channel_num: u8,
+        pulse_cycles: u8,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        self.request_wrapper(channel_num, ScanMode::ConvertChannelNOnce, pulse_cycles)
+    }
+
+    #[inline]
+    fn request_wrapper(
+        &mut self,
+        channel_num: u8,
+        scan_mode: ScanMode,
+        pulse_cycles: u8,
+    ) -> Result<(), Error<SpiE, PinE>> {
+        if self.base.cfg.pending_scan_mode.is_some() {
+            return Err(Error::Adc(AdcError::PendingOperation));
+        }
+        let conv_byte = self
+            .base
+            .get_conversion_byte(scan_mode, channel_num)
+            .map_err(Error::Adc)?;
+        self.base.send_wrapper(conv_byte)?;
+        self.cnvst.set_low().map_err(Error::Pin)?;
+        for _ in 0..pulse_cycles {}
+        self.cnvst.set_high().map_err(Error::Pin)?;
+        self.base.cfg.pending_scan_mode = Some(scan_mode);
+        Ok(())
+    }
+
+    pub fn get_single_channel(&mut self) -> nb::Result<u16, Error<SpiE, PinE>> {
+        self.base.internal_read_single_channel(&mut self.eoc)
+    }
+}
+
 mod private {
     pub trait Sealed {}
 }