GPIO PC mock & Update docs (#76)

* Updated docs

* Make HAL to mock GPIO API for PC

* Update screenshots

README.md

@@ -3,22 +3,20 @@
 Tactility is a front-end application platform for ESP32. It is mainly intended for touchscreen devices.
 It provides an application framework that is based on code from the [Flipper Zero](https://github.com/flipperdevices/flipperzero-firmware/) project.
 
+![photo of devices running Tactility](docs/pics/tactility-devices.webp)
+
 **Status: Alpha**
 
-Tactility features a desktop that can launch apps:
+Tactility features a desktop with a set of applications:
 
-![screenshot of desktop app](docs/pics/screenshot-desktop.png) ![screenshot of files app](docs/pics/screenshot-files.png)
+![screenshot of desktop app](docs/pics/screenshot-desktop.png) ![screenshot of settings app](docs/pics/screenshot-settings.png)
 
-![screenshot of system info app](docs/pics/screenshot-systeminfo.png) ![hello world app screenshot](docs/pics/screenshot-helloworld.png)
+![screenshot of system info app](docs/pics/screenshot-systeminfo.png) ![screenshot of files app](docs/pics/screenshot-files.png)
 
-Through the Settings app you can connect to Wi-Fi or change the display settings:
+![screenshot of GPIO app](docs/pics/screenshot-gpio.png)
-
-![screenshot of settings app](docs/pics/screenshot-settings.png) ![screenshot of display settings app](docs/pics/screenshot-display.png) 
 
 Play with the built-in apps or build your own! Use one of the supported devices or set up the drivers for your own hardware platform.
 
-![photo of devices running Tactility](docs/pics/tactility-devices.jpg)
-
 Noteworthy features:
 - Touch UI capabilities (via LVGL) with support for input devices such as on-device trackball or keyboard.
 - An application platform that can run apps and services.

tactility/src/apps/gpio/gpio.c

@@ -1,11 +1,9 @@
-#ifdef ESP_TARGET
-
 #include "services/loader/loader.h"
 #include "ui/toolbar.h"
 #include "thread.h"
 #include "mutex.h"
 
-#include "driver/gpio.h"
+#include "gpio_hal.h"
 #include "ui/lvgl_sync.h"
 
 typedef struct {
@@ -136,7 +134,7 @@ static void app_show(App app, lv_obj_t* parent) {
     lv_obj_align(row_wrapper, LV_ALIGN_TOP_MID, 0, 0);
 
     lock(gpio);
-    for (int i = GPIO_NUM_0; i < GPIO_NUM_MAX; ++i) {
+    for (int i = GPIO_NUM_MIN; i < GPIO_NUM_MAX; ++i) {
 
         // Add the GPIO number before the first item on a row
         if (column == 0) {
@@ -206,5 +204,3 @@ const AppManifest gpio_app = {
     .on_show = &app_show,
     .on_hide = &on_hide
 };
-
-#endif // ESP_TARGET

tactility/src/apps/gpio/gpio_hal.c

@@ -0,0 +1,7 @@
+#ifndef ESP_PLATFORM
+
+int gpio_get_level(int gpio_num) {
+    return gpio_num % 3;
+}
+
+#endif

tactility/src/apps/gpio/gpio_hal.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#ifdef ESP_PLATFORM
+#include "driver/gpio.h"
+#define GPIO_NUM_MIN GPIO_NUM_0
+#else
+#define GPIO_NUM_MIN 0
+#define GPIO_NUM_MAX 50
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef ESP_PLATFORM
+int gpio_get_level(int gpio_num);
+#endif
+
+#ifdef __cplusplus
+}
+#endif

tactility/src/tactility.c

@@ -35,6 +35,7 @@ static const ServiceManifest* const system_services[] = {
 extern const AppManifest desktop_app;
 extern const AppManifest display_app;
 extern const AppManifest files_app;
+extern const AppManifest gpio_app;
 extern const AppManifest image_viewer_app;
 extern const AppManifest power_app;
 extern const AppManifest settings_app;
@@ -43,9 +44,7 @@ extern const AppManifest text_viewer_app;
 extern const AppManifest wifi_connect_app;
 extern const AppManifest wifi_manage_app;
 
-#ifdef ESP_PLATFORM
+#ifndef ESP_PLATFORM
-extern const AppManifest gpio_app;
-#else
 extern const AppManifest screenshot_app;
 #endif
 
@@ -53,15 +52,14 @@ static const AppManifest* const system_apps[] = {
     &desktop_app,
     &display_app,
     &files_app,
+    &gpio_app,
     &image_viewer_app,
     &settings_app,
     &system_info_app,
     &text_viewer_app,
     &wifi_connect_app,
     &wifi_manage_app,
-#ifdef ESP_PLATFORM
+#ifndef ESP_PLATFORM
-    &gpio_app,
-#else
     &screenshot_app, // Screenshots don't work yet on ESP32
 #endif
 };