From 30f878e56255352a815a73c437307a395032e6ab Mon Sep 17 00:00:00 2001
From: "S.J.R. van Schaik" <stephan@whiteboxsystems.nl>
Date: Tue, 18 Jul 2017 16:18:59 +0200
Subject: [PATCH] stm32f0: usart: set up process line callback and pass the
 file pointer

---
 include/console.h              | 4 +++-
 source/drivers/usart_console.c | 8 ++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/include/console.h b/include/console.h
index 7a589c9..37e1580 100644
--- a/include/console.h
+++ b/include/console.h
@@ -4,4 +4,6 @@
 
 struct usart_console;
 
-FILE *console_init(void);
+typedef void (* process_line_func)(FILE *fp);
+
+FILE *console_init(process_line_func process_line);
diff --git a/source/drivers/usart_console.c b/source/drivers/usart_console.c
index ebca992..d97eaa8 100644
--- a/source/drivers/usart_console.c
+++ b/source/drivers/usart_console.c
@@ -19,7 +19,7 @@
 
 struct usart_console {
 	char recv_buf[RECV_BUF_LEN];
-	void (* process_line)(void);
+	void (* process_line)(FILE *fp);
 	FILE *fp;
 	volatile size_t cur, next;
 	uint32_t dev;
@@ -47,7 +47,7 @@ static void usart_isr(struct usart_console *console)
 			scb_reset_system();
 
 		if (console->recv_buf[idx] == '\r' && console->process_line) {
-			console->process_line();
+			console->process_line(console->fp);
 		}
 	}
 }
@@ -169,7 +169,7 @@ static int usart_init(struct usart_console *console)
 	return 0;
 }
 
-FILE *console_init(void)
+FILE *console_init(void (* process_line)(FILE *fp))
 {
 	cookie_io_functions_t fops = {
 		.read = usart_read,
@@ -185,7 +185,7 @@ FILE *console_init(void)
 	console->dev = USART1;
 	console->cur = 0;
 	console->next = 0;
-	console->process_line = NULL;
+	console->process_line = process_line;
 	usart[0] = console;
 
 	usart_init(console);