From 37bacdd83df3b0affaea232745695c6b787c3cb8 Mon Sep 17 00:00:00 2001
From: MX <10697207+xMasterX@users.noreply.github.com>
Date: Thu, 30 Mar 2023 03:58:22 +0300
Subject: [PATCH] GPS NMEA -> Ability to see speed in Km/h

Use right button to switch between modes
---
 applications/external/gps_nmea_uart/README.md  |  1 +
 applications/external/gps_nmea_uart/gps.c      | 13 ++++++++++++-
 applications/external/gps_nmea_uart/gps_uart.h |  1 +
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/applications/external/gps_nmea_uart/README.md b/applications/external/gps_nmea_uart/README.md
index 26a54a08f..129a6d0d8 100644
--- a/applications/external/gps_nmea_uart/README.md
+++ b/applications/external/gps_nmea_uart/README.md
@@ -12,6 +12,7 @@ repository.
 ## Modifications made by @xMasterX
 - Ability to change baudrate using Up button, hold button to switch between baudrates (9600, 57600, 115200) (i set 57600 as default)
 - Ok button will set backlight to always on mode, to disable press ok button again (it will restore default settings after app exit too)
+- Long press Right button to change speed from knots to kilometers per hour
 - Exit from app using long press on back button instead of short press, may be useful in case you want to turn backlight on and accidentally click back
 
 ## Hardware Setup
diff --git a/applications/external/gps_nmea_uart/gps.c b/applications/external/gps_nmea_uart/gps.c
index 6df1de08f..0f4a7a1d5 100644
--- a/applications/external/gps_nmea_uart/gps.c
+++ b/applications/external/gps_nmea_uart/gps.c
@@ -37,7 +37,11 @@ static void render_callback(Canvas* const canvas, void* context) {
         canvas_draw_str_aligned(canvas, 96, 18, AlignCenter, AlignBottom, buffer);
         snprintf(buffer, 64, "%.1f", (double)gps_uart->status.course);
         canvas_draw_str_aligned(canvas, 21, 40, AlignCenter, AlignBottom, buffer);
-        snprintf(buffer, 64, "%.2f kn", (double)gps_uart->status.speed);
+        if(!gps_uart->speed_in_kms) {
+            snprintf(buffer, 64, "%.2f kn", (double)gps_uart->status.speed);
+        } else {
+            snprintf(buffer, 64, "%.2f km", (double)(gps_uart->status.speed * 1.852));
+        }
         canvas_draw_str_aligned(canvas, 64, 40, AlignCenter, AlignBottom, buffer);
         snprintf(
             buffer,
@@ -154,6 +158,13 @@ int32_t gps_app(void* p) {
                         view_port_update(view_port);
                         furi_mutex_release(gps_uart->mutex);
                         break;
+                    case InputKeyRight:
+                        if(gps_uart->speed_in_kms) {
+                            gps_uart->speed_in_kms = false;
+                        } else {
+                            gps_uart->speed_in_kms = true;
+                        }
+                        break;
                     case InputKeyBack:
                         processing = false;
                         break;
diff --git a/applications/external/gps_nmea_uart/gps_uart.h b/applications/external/gps_nmea_uart/gps_uart.h
index 70ef53de6..5a42b9c58 100644
--- a/applications/external/gps_nmea_uart/gps_uart.h
+++ b/applications/external/gps_nmea_uart/gps_uart.h
@@ -33,6 +33,7 @@ typedef struct {
     uint32_t baudrate;
     bool changing_baudrate;
     bool backlight_on;
+    bool speed_in_kms;
 
     GpsStatus status;
 } GpsUart;