aux_serial: Begun moving globals into their proper private TU scopes

src/platforms/common/aux_serial.c

@@ -34,6 +34,15 @@
 #include "usb.h"
 #include "aux_serial.h"
 
+#if defined(STM32F0) || defined(STM32F1) || defined(STM32F3) || defined(STM32F4)
+/* TX double buffer */
+char buf_tx[TX_BUF_SIZE * 2];
+/* Active buffer part idx */
+uint8_t buf_tx_act_idx;
+#elif defined(LM4F)
+char buf_tx[FIFO_SIZE];
+#endif
+
 void aux_serial_set_encoding(struct usb_cdc_line_coding *coding)
 {
 	usart_set_baudrate(USBUSART, coding->dwDTERate);
@@ -98,4 +107,10 @@ char *aux_serial_current_transmit_buffer(void)
 {
 	return buf_tx + (buf_tx_act_idx * TX_BUF_SIZE);
 }
+#elif defined(LM4F)
+
+char *aux_serial_current_transmit_buffer(void)
+{
+	return buf_tx;
+}
 #endif

src/platforms/common/aux_serial.h

@@ -25,10 +25,10 @@
 
 void aux_serial_init(void);
 void aux_serial_set_encoding(struct usb_cdc_line_coding *coding);
+char *aux_serial_current_transmit_buffer(void);
 
 #if defined(STM32F0) || defined(STM32F1) || defined(STM32F3) || defined(STM32F4)
 void aux_serial_switch_transmit_buffers(void);
-char *aux_serial_current_transmit_buffer(void);
 #endif
 
 #endif /*AUX_SERIAL_H*/

src/platforms/common/usbuart.h

@@ -36,10 +36,6 @@ void debug_uart_run(void);
 #define RX_FIFO_SIZE (USART_DMA_BUF_SIZE)
 #define TX_BUF_SIZE (USART_DMA_BUF_SIZE)
 
-/* TX double buffer */
-extern char buf_tx[TX_BUF_SIZE * 2];
-/* Active buffer part idx */
-extern uint8_t buf_tx_act_idx;
 /* Active buffer part used capacity */
 extern uint8_t buf_tx_act_sz;
 /* TX transfer complete */

src/platforms/stm32/usbuart.c

@@ -49,10 +49,6 @@
 #define DMA_CGIF DMA_IFCR_CGIF_BIT
 #endif
 
-/* TX double buffer */
-char buf_tx[TX_BUF_SIZE * 2];
-/* Active buffer part idx */
-uint8_t buf_tx_act_idx;
 /* Active buffer part used capacity */
 uint8_t buf_tx_act_sz;
 /* TX transfer complete */