UART write example (#53)

* Rename test functions

* rewrite furi API, segfault

* make fixes in FURI, log through FURI

* add uart write example blank

* implement fuprintf instead of fopencookie

* add gif, blank page

* UART write example description

Co-authored-by: Vadim Kaushan <admin@disasm.info>

target_f1/Makefile

@@ -111,7 +111,8 @@ startup_stm32l476xx.s
 
 CPP_SOURCES += ../core/app.cpp
 
-C_SOURCES += ../core/debug.c
+C_SOURCES += ../core/log.c
+C_SOURCES += ../core/tty_uart.c
 C_SOURCES += ../core/furi.c
 C_SOURCES += ../core/furi_ac.c
 
@@ -131,6 +132,11 @@ C_SOURCES += ../applications/examples/blink.c
 C_DEFS += -DEXAMPLE_BLINK
 endif
 
+ifeq ($(EXAMPLE_UART_WRITE), 1)
+C_SOURCES += ../applications/examples/uart_write.c
+C_DEFS += -DEXAMPLE_UART_WRITE
+endif
+
 # User application
 
 # Add C_SOURCES +=, C_DEFS += or CPP_SOURCES += here
@@ -253,6 +259,9 @@ all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET
 example_blink:
 	EXAMPLE_BLINK=1 make
 
+example_uart_write:
+	EXAMPLE_UART_WRITE=1 make
+
 test:
 	TEST=1 make