lsm9ds1: minimal implementation

lsm9ds1/lsm9ds1_nano_33_ble.go

@@ -0,0 +1,25 @@
+//go:build nano_33_ble
+// +build nano_33_ble
+
+// Nano 33 BLE [Sense] has LSM9DS1 unit on-board.
+// This custom Configure function powers unit up
+// and enables I2C, so unit can can be accessed.
+package lsm9ds1
+
+import (
+	"machine"
+	"time"
+)
+
+// Configure sets up the device for communication.
+func (d *Device) Configure(cfg Configuration) error {
+	// Following lines are Nano 33 BLE specific, they have nothing to do with sensor per se
+	machine.LSM_PWR.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.LSM_PWR.High()
+	machine.I2C_PULLUP.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	machine.I2C_PULLUP.High()
+	// Wait a moment
+	time.Sleep(10 * time.Millisecond)
+	// Common initialisation code
+	return d.doConfigure(cfg)
+}