Furi (#24)

* furiac start and thread create implementation"

* create and kill task

* rename debug, add header

* remove write.c

* kill itself

* furi exit/switch

* success switch and exit

* WIP furi records

* add furi record interface

* rename furi app control file

* record implementation in progress

* wip furi implementation

* add automatic tests for FURI AC

* differ build tests

* small changes

* FURI record tests description

* change furi statuses

* FURI record test blank

* exit after all application ends

* delay: print then wait

* fix FURI implementatnion building

* pipe record test

* concurrent access

* uncomplete mute-test

* update FURI documentation

applications/app_example/app_example.c

@@ -0,0 +1,81 @@
+#include <stdio.h>
+#include "flipper.h"
+#include "debug.h"
+
+void furi_widget(void* param);
+void furi_test_app(void* param);
+void furi_next_test_app(void* param);
+
+/*
+widget simply print ping message
+*/
+void furi_widget(void* param) {
+    FILE* debug_uart = get_debug();
+
+    fprintf(debug_uart, "start furi widget: %s\n", (char*)param);
+
+    while(1) {
+        fprintf(debug_uart, "furi widget\n");
+        delay(10);
+    }
+}
+
+/*
+it simply start, then start child widget, wait about 1 sec (with ping evey 200 ms),
+kill the widget, continue with 500 ms ping.
+*/
+void furi_test_app(void* param) {
+
+    uint8_t cnt = 0;
+
+    while(1) {
+        fprintf(debug_uart, "furi test app %d\n", cnt);
+        delay(10);
+
+        if(cnt == 2) {
+            fprintf(debug_uart, "go to next app\n");
+            furiac_switch(furi_next_test_app, "next_test", NULL);
+            fprintf(debug_uart, "unsuccessful switch\n");
+            while(1) {
+                delay(1000);
+            }
+        }
+
+        cnt++;
+    }
+}
+
+void furi_next_test_app(void* param) {
+    FILE* debug_uart = get_debug();
+
+    fprintf(debug_uart, "start next test app\n");
+
+    delay(10);
+
+    fprintf(debug_uart, "exit next app\n");
+    furiac_exit(NULL);
+
+    while(1) {
+        // this code must not be called
+        fprintf(debug_uart, "next app: something went wrong\n");
+        delay(10);
+    }
+}
+
+/*
+FILE* debug_uart = get_debug();
+
+fprintf(debug_uart, "hello Flipper!\n");
+
+GpioPin red_led = {LED_RED_GPIO_Port, LED_RED_Pin};
+
+app_gpio_init(red_led, GpioModeOutput);
+
+
+while(1) {
+    delay(100);
+    app_gpio_write(red_led, true);
+    delay(100);
+    app_gpio_write(red_led, false);
+}
+*/

applications/app_example/app_example.h

@@ -0,0 +1,2 @@
+
+void furi_test_app(void*);