117 lines
2 KiB
Go
117 lines
2 KiB
Go
|
//go:build cyw43439
|
||
|
|
|
||
|
|
package bluetooth
|
||
|
|
|
||
|
|
import (
|
||
|
|
"machine"
|
||
|
|
|
||
|
|
"log/slog"
|
||
|
|
|
||
|
|
"github.com/soypat/cyw43439"
|
||
|
|
)
|
||
|
|
|
||
|
|
const maxConnections = 1
|
||
|
|
|
||
|
|
// Adapter represents a SPI connection to the HCI controller on an attached CYW4349 module.
|
||
|
|
type Adapter struct {
|
||
|
|
hciAdapter
|
||
|
|
}
|
||
|
|
|
||
|
|
// DefaultAdapter is the default adapter on the current system.
|
||
|
|
//
|
||
|
|
// Make sure to call Enable() before using it to initialize the adapter.
|
||
|
|
var DefaultAdapter = &Adapter{
|
||
|
|
hciAdapter: hciAdapter{
|
||
|
|
isDefault: true,
|
||
|
|
connectHandler: func(device Device, connected bool) {
|
||
|
|
return
|
||
|
|
},
|
||
|
|
connectedDevices: make([]Device, 0, maxConnections),
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
// Enable configures the BLE stack. It must be called before any
|
||
|
|
// Bluetooth-related calls (unless otherwise indicated).
|
||
|
|
func (a *Adapter) Enable() error {
|
||
|
|
if debug {
|
||
|
|
println("Initializing CYW43439 device")
|
||
|
|
}
|
||
|
|
|
||
|
|
dev := cyw43439.NewPicoWDevice()
|
||
|
|
cfg := cyw43439.DefaultBluetoothConfig()
|
||
|
|
if debug {
|
||
|
|
cfg.Logger = slog.New(slog.NewTextHandler(machine.USBCDC, &slog.HandlerOptions{
|
||
|
|
Level: slog.LevelDebug - 2,
|
||
|
|
}))
|
||
|
|
}
|
||
|
|
|
||
|
|
err := dev.Init(cfg)
|
||
|
|
if err != nil {
|
||
|
|
if debug {
|
||
|
|
println("Error initializing CYW43439 device", err.Error())
|
||
|
|
}
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
transport := &hciSPI{dev: dev}
|
||
|
|
|
||
|
|
a.hci, a.att = newBLEStack(transport)
|
||
|
|
if debug {
|
||
|
|
println("Enabling CYW43439 device")
|
||
|
|
}
|
||
|
|
|
||
|
|
a.enable()
|
||
|
|
|
||
|
|
if debug {
|
||
|
|
println("Enabled CYW43439 device")
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
type hciSPI struct {
|
||
|
|
dev *cyw43439.Device
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) startRead() {
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) endRead() {
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) Buffered() int {
|
||
|
|
return h.dev.BufferedHCI()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) ReadByte() (byte, error) {
|
||
|
|
var buf [1]byte
|
||
|
|
|
||
|
|
r, err := h.dev.HCIReadWriter()
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
if _, err := r.Read(buf[:]); err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return buf[0], nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) Read(buf []byte) (int, error) {
|
||
|
|
r, err := h.dev.HCIReadWriter()
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return r.Read(buf)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *hciSPI) Write(buf []byte) (int, error) {
|
||
|
|
w, err := h.dev.HCIReadWriter()
|
||
|
|
if err != nil {
|
||
|
|
return 0, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return w.Write(buf)
|
||
|
|
}
|