From 1bb5492d81385f91c856ad20b1313a795c5ab60a Mon Sep 17 00:00:00 2001
From: Andrey Egorov <and7643@gmail.com>
Date: Tue, 23 Jul 2024 18:30:04 +0300
Subject: [PATCH] Fixed update.

---
 api/modem/modem.go | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/api/modem/modem.go b/api/modem/modem.go
index 0be65ef..a4a6ddc 100644
--- a/api/modem/modem.go
+++ b/api/modem/modem.go
@@ -249,9 +249,10 @@ func (m *modem) CalculateSpeed(newLatitude, newLongitude float64) {
 	m.gpsInfo.Speed = earthRad * c / (math.Abs(float64(time.Since(m.lastUpdateTime))))
 }
 
-func decodeGpsInfo(strs [9]string) (GpsInfo, error) {
+func decodeGpsInfo(str string) (GpsInfo, error) {
 	var err error
 	newGpsInfo := GpsInfo{}
+	strs := strings.Split(strings.Split(strings.Replace(str, " ", "", -1), "\n")[0], ",")
 
 	newGpsInfo.Latitude, err = strconv.ParseFloat(strs[0], 64)
 	if err != nil {
@@ -273,9 +274,12 @@ func decodeGpsInfo(strs [9]string) (GpsInfo, error) {
 	if err != nil {
 		return GpsInfoNil, fmt.Errorf("parse speed: %w", err)
 	}
-	newGpsInfo.Course, err = strconv.ParseFloat(strs[8], 64)
-	if err != nil {
-		return GpsInfoNil, fmt.Errorf("parse course: %w", err)
+	// Course sometimes may be null
+	if len(strs[8]) > 0 {
+		newGpsInfo.Course, err = strconv.ParseFloat(strs[8], 64)
+		if err != nil {
+			return GpsInfoNil, fmt.Errorf("parse course: %w", err)
+		}
 	}
 	return newGpsInfo, nil
 }
@@ -311,9 +315,8 @@ func (m *modem) Update() error {
 		return fmt.Errorf("error response")
 	}
 	m.logger.Println("Decoding data...")
-	coordinates := strings.Split(strings.Split(resp.RmFront("+CGPSINFO:").String(), "\n")[0], ",")
 
-	newGpsInfo, err := decodeGpsInfo([9]string(coordinates))
+	newGpsInfo, err := decodeGpsInfo(strings.Split(strings.Replace(resp.RmFront("+CGPSINFO:").String(), "\r", "", -1), "\n")[0])
 	if err != nil {
 		m.logger.Println("Gps info decode error:", err.Error())
 		return nil