diff options
| -rw-r--r-- | tests/ads1x13.rs | 55 | ||||
| -rw-r--r-- | tests/common/mod.rs | 76 |
2 files changed, 131 insertions, 0 deletions
diff --git a/tests/ads1x13.rs b/tests/ads1x13.rs new file mode 100644 index 0000000..6a2b558 --- /dev/null +++ b/tests/ads1x13.rs @@ -0,0 +1,55 @@ +#[macro_use(block)] +extern crate nb; +extern crate embedded_hal; +extern crate embedded_hal_mock as hal; +use hal::i2c::Transaction as I2cTrans; +extern crate ads1x1x; +use ads1x1x::channel; + +mod common; +use common::{ new_ads1013, destroy_ads1013, new_ads1113, destroy_ads1113, + DEVICE_ADDRESS as DEV_ADDR, Register, BitFlags, Config }; + +macro_rules! impl_tests { + ($IC:ident, $create:ident, $destroy:ident, $expected:expr) => { + mod $IC { + use embedded_hal::adc::OneShot; + use super::*; + #[test] + fn can_create() { + let dev = $create(&[]); + $destroy(dev); + } + + mod would_block { + use super::*; + + #[test] + fn read_if_measurement_in_progress() { + let config = Config::default().with_low(BitFlags::OS); + let transactions = [ I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![config.msb(), config.lsb()] ) ]; + let mut dev = $create(&transactions); + assert_would_block!(dev.read(&mut channel::A0)); + $destroy(dev); + } + } + + #[test] + fn can_measure() { + let default_config = Config::default(); + let config_with_os = Config::default().with_high(BitFlags::OS); + let transactions = [ I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![default_config.msb(), default_config.lsb()]), + I2cTrans::write(DEV_ADDR, vec![Register::CONFIG, config_with_os.msb(), config_with_os.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![config_with_os.msb(), config_with_os.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONVERSION], vec![0x80, 0x00] ) ]; + let mut dev = $create(&transactions); + let measurement = block!(dev.read(&mut channel::A0{})).unwrap(); + assert_eq!($expected, measurement); + $destroy(dev); + } + } + } +} + +impl_tests!(ads1013, new_ads1013, destroy_ads1013, -2048); +impl_tests!(ads1113, new_ads1113, destroy_ads1113, -32768); diff --git a/tests/common/mod.rs b/tests/common/mod.rs new file mode 100644 index 0000000..8a4f1dd --- /dev/null +++ b/tests/common/mod.rs @@ -0,0 +1,76 @@ +use hal::i2c::{ Mock as I2cMock, Transaction as I2cTrans }; +extern crate ads1x1x; +use self::ads1x1x::{ Ads1x1x, interface, ic, SlaveAddr, mode }; + +pub const DEVICE_ADDRESS : u8 = 0b100_1000; + +pub struct Register; + +impl Register { + pub const CONVERSION : u8 = 0x00; + pub const CONFIG : u8 = 0x01; + //const LOW_TH : u8 = 0x02; + //const HIGH_TH : u8 = 0x03; +} + +pub struct BitFlags; +impl BitFlags { + //pub const OP_MODE : u16 = 0b0000_0001_0000_0000; + pub const OS : u16 = 0b1000_0000_0000_0000; + //pub const DR2 : u16 = 0b0000_0000_1000_0000; + //pub const DR1 : u16 = 0b0000_0000_0100_0000; + //pub const DR0 : u16 = 0b0000_0000_0010_0000; +} + +pub struct Config { + pub bits: u16 +} + +impl Config { + pub fn with_high(&self, mask: u16) -> Self { + Config { bits: self.bits | mask } + } + pub fn with_low(&self, mask: u16) -> Self { + Config { bits: self.bits & !mask } + } + + pub fn msb(&self) -> u8 { + (self.bits >> 8) as u8 + } + + pub fn lsb(&self) -> u8 { + self.bits as u8 + } +} + +impl Default for Config { + fn default() -> Self { + Config { bits: 0x8583 } + } +} + +macro_rules! impl_new_destroy { + ($ic:ident, $create:ident, $destroy:ident, $trans:ty, $iface:ty) => { + pub fn $create(transactions: &[$trans]) -> Ads1x1x<$iface, ic::$ic, mode::OneShot> { + Ads1x1x::$create(I2cMock::new(&transactions), SlaveAddr::default()) + } + + pub fn $destroy<MODE>(dev: Ads1x1x<$iface, ic::$ic, MODE>) { + dev.$destroy().done(); + } + } +} + +impl_new_destroy!(Ads1013, new_ads1013, destroy_ads1013, I2cTrans, interface::I2cInterface<I2cMock>); +impl_new_destroy!(Ads1113, new_ads1113, destroy_ads1113, I2cTrans, interface::I2cInterface<I2cMock>); + +#[macro_export] +macro_rules! assert_would_block { + ($result: expr) => { + match $result { + Err(nb::Error::WouldBlock) => (), + _ => panic!("Would not block.") + } + } +} + |