mirror of
https://github.com/tinygo-org/drivers.git
synced 2026-08-03 14:37:46 +00:00
Kenneth Bell
81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
package ina260
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import (
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"testing"
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qt "github.com/frankban/quicktest"
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"tinygo.org/x/drivers/tester"
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)
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func TestDefaultI2CAddress(t *testing.T) {
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c := qt.New(t)
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bus := tester.NewI2CBus(c)
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dev := New(bus)
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c.Assert(dev.Address, qt.Equals, uint16(Address))
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}
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func TestConnected(t *testing.T) {
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c := qt.New(t)
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bus := tester.NewI2CBus(c)
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fake := tester.NewI2CDevice16(c, Address)
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fake.Registers = defaultRegisters()
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bus.AddDevice(fake)
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dev := New(bus)
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c.Assert(dev.Connected(), qt.Equals, true)
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}
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func TestVoltage(t *testing.T) {
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c := qt.New(t)
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bus := tester.NewI2CBus(c)
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fake := tester.NewI2CDevice16(c, Address)
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fake.Registers = defaultRegisters()
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fake.Registers[REG_BUSVOLTAGE] = 0x2570
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bus.AddDevice(fake)
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dev := New(bus)
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// Datasheet: 2570h = 11.98V = 11980mV = 11980000uV
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c.Assert(dev.Voltage(), qt.Equals, int32(11980000))
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}
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func TestCurrent(t *testing.T) {
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c := qt.New(t)
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bus := tester.NewI2CBus(c)
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fake := tester.NewI2CDevice16(c, Address)
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fake.Registers = defaultRegisters()
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fake.Registers[REG_CURRENT] = 0x2710
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bus.AddDevice(fake)
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dev := New(bus)
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// Datasheet: 2710h = 12.5A = 12500mA = 12500000uA
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c.Assert(dev.Current(), qt.Equals, int32(12500000))
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}
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func TestPower(t *testing.T) {
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c := qt.New(t)
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bus := tester.NewI2CBus(c)
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fake := tester.NewI2CDevice16(c, Address)
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fake.Registers = defaultRegisters()
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fake.Registers[REG_POWER] = 0x3A7F
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bus.AddDevice(fake)
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dev := New(bus)
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// 3A7Fh = 149.75W = 149750mW = 149750000uW
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c.Assert(dev.Power(), qt.Equals, int32(149750000))
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}
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// defaultRegisters returns the default values for all of the device's registers.
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// set TI INA260 datasheet for power-on defaults
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func defaultRegisters() map[uint8]uint16 {
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return map[uint8]uint16{
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REG_CONFIG: 0x6127,
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REG_CURRENT: 0x0000,
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REG_BUSVOLTAGE: 0x0000,
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REG_POWER: 0x0000,
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REG_MASKENABLE: 0x0000,
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REG_ALERTLIMIT: 0x0000,
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REG_MANF_ID: 0x5449,
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REG_DIE_ID: 0x2270,
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}
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}
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