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416 lines
9.4 KiB
Go
416 lines
9.4 KiB
Go
// Copyright 2017 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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package bmxx80
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import (
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"testing"
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"time"
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"periph.io/x/conn/v3/i2c/i2ctest"
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"periph.io/x/conn/v3/physic"
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)
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var opts180 = &Opts{Temperature: O1x, Pressure: O1x}
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func TestNew180_fail_read_chipid(t *testing.T) {
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bus := i2ctest.Playback{
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// Chip ID detection read fail.
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Ops: []i2ctest.IO{},
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DontPanic: true,
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}
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if _, err := NewI2C(&bus, 0x77, opts180); err == nil {
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t.Fatal("can't read chip ID")
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}
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}
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func TestNew180_bad_chipid(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Bad Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x61}},
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},
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}
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if _, err := NewI2C(&bus, 0x77, opts180); err == nil {
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t.Fatal("bad chip ID")
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}
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}
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func TestNew180_fail_calib(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Fail to read calibration data.
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},
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DontPanic: true,
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}
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if _, err := NewI2C(&bus, 0x77, opts180); err == nil {
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t.Fatal("can't read calibration")
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}
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}
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func TestNew180_bad_calib(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
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},
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},
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DontPanic: true,
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}
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if _, err := NewI2C(&bus, 0x77, opts180); err == nil {
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t.Fatal("bad calibration")
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}
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}
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func TestSense180_success(t *testing.T) {
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values := []struct {
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o Oversampling
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c byte
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p physic.Pressure
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}{
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{Oversampling(42), 0x34, 100567 * physic.Pascal},
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{O1x, 0x34, 100567 * physic.Pascal},
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{O2x, 0x74, 100567 * physic.Pascal},
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{O4x, 0xB4, 100568 * physic.Pascal},
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{O8x, 0xF4, 100568 * physic.Pascal},
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}
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for _, line := range values {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0x71, 0xBf}},
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// Request pressure.
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{Addr: 0x77, W: []byte{0xF4, line.c}},
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// Read pressure.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0xAb, 0x96, 0}},
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},
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}
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dev, err := NewI2C(&bus, 0x77, &Opts{Pressure: line.o})
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if err != nil {
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t.Fatal(err)
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}
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if s := dev.String(); s != "BMP180{playback(119)}" {
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t.Fatal(s)
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}
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e := physic.Env{}
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if err := dev.Sense(&e); err != nil {
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t.Fatal(err)
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}
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if e.Temperature != 25300*physic.MilliCelsius+physic.ZeroCelsius {
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t.Fatalf("temp %d", e.Temperature)
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}
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if e.Pressure != line.p {
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t.Fatalf("pressure %d", e.Pressure)
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}
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if e.Humidity != 0 {
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t.Fatalf("humidity %d", e.Humidity)
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}
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if err := dev.Halt(); err != nil {
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t.Fatal(err)
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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}
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func TestSense180_fail_1(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature fail.
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},
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DontPanic: true,
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}
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dev, err := NewI2C(&bus, 0x77, opts180)
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if err != nil {
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t.Fatal(err)
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}
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e := physic.Env{}
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if dev.Sense(&e) == nil {
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t.Fatal("sensing should have failed")
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestSense180_fail_2(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature fail.
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},
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DontPanic: true,
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}
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dev, err := NewI2C(&bus, 0x77, opts180)
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if err != nil {
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t.Fatal(err)
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}
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e := physic.Env{}
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if dev.Sense(&e) == nil {
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t.Fatal("sensing should have failed")
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestSense180_fail_3(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature fail.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0x71, 0xBf}},
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// Request pressure fail.
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},
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DontPanic: true,
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}
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dev, err := NewI2C(&bus, 0x77, opts180)
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if err != nil {
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t.Fatal(err)
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}
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e := physic.Env{}
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if dev.Sense(&e) == nil {
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t.Fatal("sensing should have failed")
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestSense180_fail_4(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature fail.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0x71, 0xBf}},
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// Request pressure.
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{Addr: 0x77, W: []byte{0xF4, 0x34}},
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// Read pressure fail.
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},
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DontPanic: true,
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}
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dev, err := NewI2C(&bus, 0x77, opts180)
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if err != nil {
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t.Fatal(err)
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}
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e := physic.Env{}
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if dev.Sense(&e) == nil {
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t.Fatal("sensing should have failed")
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestSenseContinuous180_success(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0x71, 0xBf}},
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// Request pressure.
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{Addr: 0x77, W: []byte{0xF4, 0x34}},
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// Read pressure.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0xAb, 0x96, 0}},
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// Request temperature.
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{Addr: 0x77, W: []byte{0xF4, 0x2E}},
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// Read temperature.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0x71, 0xBf}},
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// Request pressure.
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{Addr: 0x77, W: []byte{0xF4, 0x34}},
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// Read pressure.
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{Addr: 0x77, W: []byte{0xF6}, R: []byte{0xAb, 0x96, 0}},
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},
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DontPanic: true,
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}
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dev, err := NewI2C(&bus, 0x77, opts180)
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if err != nil {
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t.Fatal(err)
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}
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c, err := dev.SenseContinuous(time.Minute)
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if err != nil {
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t.Fatal(err)
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}
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e := <-c
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if e.Temperature != 25300*physic.MilliCelsius+physic.ZeroCelsius {
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t.Fatalf("temp %d", e.Temperature)
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}
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if e.Pressure != 100567*physic.Pascal {
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t.Fatalf("pressure %d", e.Pressure)
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}
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if e.Humidity != 0 {
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t.Fatalf("humidity %d", e.Humidity)
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}
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if dev.Sense(&e) == nil {
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t.Fatal("Sense() should have failed")
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}
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c2, err := dev.SenseContinuous(time.Minute)
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if err != nil {
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t.Fatal(err)
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}
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e = <-c2
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if _, ok := <-c; ok {
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t.Fatal("c should be closed")
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}
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if err := dev.Halt(); err != nil {
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t.Fatal(err)
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}
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if _, ok := <-c2; ok {
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t.Fatal("c2 should be closed")
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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func TestBmp180Precision(t *testing.T) {
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bus := i2ctest.Playback{
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Ops: []i2ctest.IO{
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// Chip ID detection.
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{Addr: 0x77, W: []byte{0xd0}, R: []byte{0x55}},
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// Calibration data.
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{
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Addr: 0x77,
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W: []byte{0xaa},
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R: []byte{35, 136, 251, 103, 199, 169, 135, 91, 98, 137, 80, 22, 25, 115, 0, 46, 128, 0, 209, 246, 10, 123},
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},
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},
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}
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dev, err := NewI2C(&bus, 0x77, &DefaultOpts)
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if err != nil {
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t.Fatal(err)
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}
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e := physic.Env{}
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dev.Precision(&e)
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if e.Temperature != 100*physic.MilliKelvin {
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t.Fatal(e.Temperature)
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}
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if e.Pressure != physic.Pascal {
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t.Fatal(e.Pressure)
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}
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if e.Humidity != 0 {
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t.Fatal(e.Humidity)
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}
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if err := bus.Close(); err != nil {
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t.Fatal(err)
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}
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}
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/*
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func TestOversampling(t *testing.T) {
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data := []struct {
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o Oversampling
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v int
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s string
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}{
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{O1x, 1, "1x"},
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{O2x, 2, "2x"},
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{O4x, 4, "4x"},
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{O8x, 8, "8x"},
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{Oversampling(100), 0, "Oversampling(100)"},
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}
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for i, line := range data {
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if s := line.o.String(); s != line.s {
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t.Fatalf("#%d %s != %s", i, s, line.s)
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}
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}
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}
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*/
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func TestCompensate180(t *testing.T) {
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c := calibration180{
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AC1: 408,
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AC2: -72,
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AC3: -14383,
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AC4: 32741,
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AC5: 32757,
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AC6: 23153,
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B1: 6190,
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B2: 4,
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MB: -32768,
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MC: -8711,
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MD: 2868,
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}
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if temp := c.compensateTemp(27898); temp != 150 {
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t.Errorf("temperature is wrong, want %v, got %v", 150, temp)
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}
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if pressure := c.compensatePressure(23843, 27898, 0); pressure != 69964 {
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t.Errorf("pressure is wrong, want %v, got %v", 69964, pressure)
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}
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}
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func init() {
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doSleep = func(time.Duration) {}
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}
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