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Ayke van Laethem
06e298c514
This is better for various reasons:
* I don't like the inline assembly implementation in TinyGo. It kinda
works, but it's hard to use correctly.
* The Go version had a subtle bug: the i and value variables weren't
marked as modified. The compiler produced correct code by chance. In
GCC-style inline assembly, it's possible to correctly mark it as an
input+output operand.
* LLVM 14 has some changes to inline assembly that change how memory
operands can be created. Instead of supporting that, I'd like to get
rid of memory operands entirely (and possibly inline assembly in
general).
I did some light testing: the ARM assembly changed a bit but not in any
way that should have a practical effect, and the RISC-V assembly didn't
change at all.
TinyGo Drivers
This package provides a collection of hardware drivers for devices such as sensors and displays that can be used together with TinyGo.
Installing
go get tinygo.org/x/drivers
How to use
Here is an example in TinyGo that uses the BMP180 digital barometer:
package main
import (
"time"
"machine"
"tinygo.org/x/drivers/bmp180"
)
func main() {
machine.I2C0.Configure(machine.I2CConfig{})
sensor := bmp180.New(machine.I2C0)
sensor.Configure()
connected := sensor.Connected()
if !connected {
println("BMP180 not detected")
return
}
println("BMP180 detected")
for {
temp, _ := sensor.ReadTemperature()
println("Temperature:", float32(temp)/1000, "°C")
pressure, _ := sensor.ReadPressure()
println("Pressure", float32(pressure)/100000, "hPa")
time.Sleep(2 * time.Second)
}
}
Currently supported devices
The following 78 devices are supported.
Contributing
Your contributions are welcome!
Please take a look at our CONTRIBUTING.md document for details.
License
This project is licensed under the BSD 3-clause license, just like the Go project itself.