Working support for multiple UARTs.

Default behavior (printf, gets, etc.) routes to DEFAULT_UART, set in hal_uart.h. Use fputstr() to print to other UARTs. Bring
fgets() from hal_io.c out in hal_io.h if you want to read data from other UARTs.

Still blocking. No interrupt-driven stuff yet.

1 files changed, 25 insertions, 17 deletions

diff --git a/firmware/microblaze/lib/hal_uart.h b/firmware/microblaze/lib/hal_uart.h
index 218bd7cb4..81f4a6777 100644
--- a/firmware/microblaze/lib/hal_uart.h
+++ b/firmware/microblaze/lib/hal_uart.h
@@ -25,29 +25,37 @@
 #define	UART_MODE_RAW		0x0000	// no mapping on input or output
 #define	UART_MODE_ONLCR	0x0001	// map \n to \r\n on output (default)
 
+#define DEFAULT_UART UART_DEBUG //which UART printf, gets, etc. use
+
+typedef enum {
+  US_9600   = 0,
+  US_19200  = 1,
+  US_38400  = 2,
+  US_57600  = 3,
+  US_115200 = 4,
+  US_230400 = 5
+} hal_uart_speed_t;
+
+typedef struct {
+  hal_uart_speed_t	speed;
+} hal_uart_config_t;
+
+typedef enum {
+  UART_DEBUG = 0,
+  UART_EXP   = 1,
+  UART_GPS   = 2
+} hal_uart_name_t;
+
 /*
  * \brief Set uart mode
  */
-void hal_uart_set_mode(int uart, int flags);
+void hal_uart_set_mode(hal_uart_name_t uart, int flags);
 
 /*!
  * \brief one-time call to init
  */
 void hal_uart_init(void);
 
-typedef enum {
-  US_9600,
-  US_19200,
-  US_38400,
-  US_57600,
-  US_115200,
-  US_230400,
-} hal_uart_speed_t;
-
-typedef struct {
-  hal_uart_speed_t	speed;
-} hal_uart_config_t;
-
 /*!
  * \brief Set uart parameters
  *  Default is 115,200 bps, 8N1.
@@ -62,17 +70,17 @@ void hal_uart_get_config(hal_uart_config_t *c);
 /*!
  * \brief Enqueue \p ch for output over serial port
  */
-void hal_uart_putc(uart_regs_t *u, int ch);
+void hal_uart_putc(hal_uart_name_t u, int ch);
 
 /*!
  * \brief Enqueue \p ch for output over serial port, silent fail if queue is full
  */
-void hal_uart_putc_nowait(uart_regs_t *u, int ch);
+void hal_uart_putc_nowait(hal_uart_name_t u, int ch);
 
 /*
  * \brief Blocking read of next char from serial port
  */
-int hal_uart_getc(uart_regs_t *u);
+int hal_uart_getc(hal_uart_name_t u);
 
 
 #endif /* INCLUDED_HAL_UART_H */