ADD: cdc shell init/exit prototypes

Makefile

@@ -1,6 +1,6 @@
 # General Target Settings
 TARGET	= bluepill-serial-monster
-SRCS	= main.c system_clock.c status_led.c usb_core.c usb_descriptors.c usb_io.c usb_uid.c usb_panic.c usb_cdc.c
+SRCS	= main.c system_clock.c status_led.c usb_core.c usb_descriptors.c usb_io.c usb_uid.c usb_panic.c usb_cdc.c cdc_shell.c
 
 # Toolchain & Utils
 CC		= arm-none-eabi-gcc

cdc_shell.c

@@ -0,0 +1,9 @@
+#include "cdc_shell.h"
+
+void cdc_shell_init() {
+
+}
+
+void cdc_shell_exit() {
+
+}

cdc_shell.h

@@ -0,0 +1,7 @@
+#ifndef CDC_SHELL_H
+#define CDC_SHELL_H
+
+void cdc_shell_init();
+void cdc_shell_exit();
+
+#endif /* CDC_SHELL_H */

usb_cdc.c

@@ -11,6 +11,7 @@
 #include "usb_core.h"
 #include "usb_descriptors.h"
 #include "usb_panic.h"
+#include "cdc_shell.h"
 #include "usb_cdc.h"
 
 /* USB CDC Device Enabled Flag */
@@ -483,6 +484,7 @@ void usb_cdc_enter_config_mode() {
     cdc_state->rx_buf.tail = cdc_state->rx_buf.head;
     cdc_state->tx_buf.tail = cdc_state->tx_buf.head;
     usart->CR1 &= ~(USART_CR1_RE);
+    cdc_shell_init();
     usb_cdc_config_mode = 1;
 }
 
@@ -492,6 +494,7 @@ void usb_cdc_leave_config_mode() {
     cdc_state->rx_buf.tail = cdc_state->rx_buf.head;
     cdc_state->tx_buf.tail = cdc_state->tx_buf.head;
     usart->CR1 |= USART_CR1_RE;
+    cdc_shell_exit();
     usb_cdc_config_mode = 0;
 }