added int to string cot

waveshare213v2/waveshare213v2.go

@@ -5,6 +5,7 @@ import (
 	"image"
 	"image/color"
 	"image/draw"
+	"strconv"
 	"time"
 
 	"periph.io/x/conn/v3"
@@ -397,7 +398,7 @@ func (d *Dev) Halt() error {
 
 // String returns a string containing configuration information
 func (d *Dev) String() string {
-	return fmt.Sprintf("epd.Dev{%s, %s, %s, %s}", d.c, d.dc, d.opts.Height, d.opts.Width)
+	return fmt.Sprintf("epd.Dev{%s, %s, Height: %s, Width: %s}", d.c, d.dc, strconv.Itoa(d.opts.Height), strconv.Itoa(d.opts.Width))
 }
 
 func (d *Dev) sendData(c []byte) error {