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Diffstat (limited to 'tests/mux.rs')
| -rw-r--r-- | tests/mux.rs | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/tests/mux.rs b/tests/mux.rs new file mode 100644 index 0000000..f448f04 --- /dev/null +++ b/tests/mux.rs @@ -0,0 +1,73 @@ +#[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; + +#[macro_use] +mod common; +use common::{ new_ads1015 as new, destroy_ads1015 as destroy, + DEVICE_ADDRESS as DEV_ADDR, Register, BitFlags as BF, Config }; + + +macro_rules! mux_test { + ($name:ident, $CS:ident, $config_bits:expr, $other_CS:ident, $other_config_bits:expr) => { + mod $name { + use embedded_hal::adc::OneShot; + use super::*; + + #[test] + fn can_read() { + let default_config = Config::default(); + let config = Config::default().with_high(BF::OS).with_high($config_bits); + 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.msb(), config.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![config.msb(), config.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONVERSION], vec![0x80, 0x00] ) ]; + let mut dev = new(&transactions); + let measurement = block!(dev.read(&mut channel::$CS)).unwrap(); + assert_eq!(-2048, measurement); + destroy(dev); + } + + #[test] + fn read_then_read_different_triggers_new_measurement() { + let default_config = Config::default(); + let config = Config::default().with_high(BF::OS).with_high($config_bits); + let other_config = Config::default().with_high($other_config_bits); + let transactions = [ I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![default_config.msb(), default_config.lsb()]), + I2cTrans::write(DEV_ADDR, vec![Register::CONFIG, config.msb(), config.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![config.msb(), config.lsb()]), + I2cTrans::write(DEV_ADDR, vec![Register::CONFIG, other_config.msb(), other_config.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONFIG], vec![other_config.msb(), other_config.lsb()]), + I2cTrans::write_read(DEV_ADDR, vec![Register::CONVERSION], vec![0x80, 0x00] ) ]; + let mut dev = new(&transactions); + assert_would_block!(dev.read(&mut channel::$CS)); + let measurement = block!(dev.read(&mut channel::$other_CS)).unwrap(); + assert_eq!(-2048, measurement); + destroy(dev); + } + + #[test] + fn continuous_can_select_channel() { + let config = Config::default().with_high($config_bits); + let transactions = [ I2cTrans::write(DEV_ADDR, vec![Register::CONFIG, config.msb(), config.lsb()]) ]; + let dev = new(&transactions); + let mut dev = dev.into_continuous().unwrap(); + dev.select_channel(&mut channel::$CS).unwrap(); + destroy(dev); + } + } + }; +} + +mux_test!(diffa0a1, DifferentialA0A1, 0, SingleA0, BF::MUX2); +mux_test!(diffa0a3, DifferentialA0A3, BF::MUX0, SingleA0, BF::MUX2); +mux_test!(diffa1a3, DifferentialA1A3, BF::MUX1, SingleA0, BF::MUX2); +mux_test!(diffa2a3, DifferentialA2A3, BF::MUX1 | BF::MUX0, SingleA0, BF::MUX2); +mux_test!(singlea0, SingleA0, BF::MUX2, DifferentialA0A1, 0); +mux_test!(singlea1, SingleA1, BF::MUX2 | BF::MUX0, SingleA0, BF::MUX2); +mux_test!(singlea2, SingleA2, BF::MUX2 | BF::MUX1, SingleA0, BF::MUX2); +mux_test!(singlea3, SingleA3, BF::MUX2 | BF::MUX1 | BF::MUX0, SingleA0, BF::MUX2); |