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Scott Feldman
e7931c6a22
wifinina driver was not handling concurrent socket connections
correctly. When trying to make multiple socket connections, the sockfd
returned by the first Socket() call would be the same sockfd returned by
subsequent Socket() calls. The problem is the sockfd returned by
Socket() isn't used until Connect() (or Appect()). This would result in
Connect() trying to use the same sockfd for multiple connections,
causing wifinina fw to lock up.
The solution in this PR is to create a new sockfd space managed by the
driver that gives the app a unique, safe sockfd for each connection.
The real underlying sock fd returned by fw is set on Connect() (or
Accept()), and mapped back to the apps sockfd using a map:
sockets map[int]*Socket // keyed by sockfd
Where Socket has a reference to the fw sock:
type Socket struct {
protocol int
clientConnected bool
laddr netip.AddrPort // Set in Bind()
raddr netip.AddrPort // Set in Connect()
sock // Device socket, as returned from w.getSocket()
}
TinyGo Drivers
This package provides a collection of 101 different hardware drivers for devices such as sensors and displays that can be used together with TinyGo.
For the complete list, please see: https://tinygo.org/docs/reference/devices/
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)
}
}
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.