console: separate driver for USART

Makefile

@@ -19,7 +19,6 @@ CFLAGS += -fno-common --function-sections -fdata-sections
 
 obj-y += source/main.o
 obj-y += source/shell.o
-obj-y += source/usart.o
 
 obj-y += source/core/flash.o
 

scripts/Makefile.stm32f0

@@ -19,6 +19,7 @@ STLINK_PORT ?= :4242
 obj-y += source/core/spi.o
 obj-y += source/drivers/spi_flash.o
 obj-y += source/drivers/stm32f0_spi.o
+obj-y += source/drivers/usart_console.o
 
 $(OPENCM3_DIR)/lib/lib$(OPENCM3_LIBNAME).a:
 	@if [ ! -e libopencm3/.git ]; then \

source/drivers/usart_console.c

@@ -12,7 +12,7 @@
 #include <limits.h>
 #include <sys/types.h>
 
-#include "usart.h"
+#include <console.h>
 
 static ssize_t usart_read(void *cookie, char *buf, size_t n)
 {

source/main.c

@@ -1,7 +1,7 @@
 #include <stdio.h>
 
-#include "shell.h"
-#include "usart.h"
+#include <console.h>
+#include <shell.h>
 
 int main(void)
 {