diff options
Diffstat (limited to 'bsps/arm/csb337/umon/umoncons.c')
-rw-r--r-- | bsps/arm/csb337/umon/umoncons.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/bsps/arm/csb337/umon/umoncons.c b/bsps/arm/csb337/umon/umoncons.c new file mode 100644 index 0000000000..ef49585ef8 --- /dev/null +++ b/bsps/arm/csb337/umon/umoncons.c @@ -0,0 +1,131 @@ +/* + * uMon Support Output Driver + * + * COPYRIGHT (c) 1989-2009. + * On-Line Applications Research Corporation (OAR). + * + * Modified by Fernando Nicodemos <fgnicodemos@terra.com.br> + * from NCB - Sistemas Embarcados Ltda. (Brazil) + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <rtems/umon.h> +#include <libchip/serial.h> +#include <libchip/sersupp.h> + +/* static function prototypes */ +static int umoncons_first_open(int major, int minor, void *arg); +static int umoncons_last_close(int major, int minor, void *arg); +static int umoncons_read(int minor); +static ssize_t umoncons_write(int minor, const char *buf, size_t len); +static void umoncons_init(int minor); +static void umoncons_write_polled(int minor, char c); +static int umoncons_set_attributes(int minor, const struct termios *t); + +/* Pointers to functions for handling the UART. */ +const console_fns umoncons_fns = +{ + libchip_serial_default_probe, + umoncons_first_open, + umoncons_last_close, + umoncons_read, + umoncons_write, + umoncons_init, + umoncons_write_polled, /* not used in this driver */ + umoncons_set_attributes, + false /* TRUE if interrupt driven, FALSE if not. */ +}; + +/*********************************************************************/ +/* Functions called via callbacks (i.e. the ones in uart_fns */ +/*********************************************************************/ + +/* + * This is called the first time each device is opened. Since + * the driver is polled, we don't have to do anything. If the driver + * were interrupt driven, we'd enable interrupts here. +*/ +static int umoncons_first_open(int major, int minor, void *arg) +{ + return 0; +} + + +/* + * This is called the last time each device is closed. Since + * the driver is polled, we don't have to do anything. If the driver + * were interrupt driven, we'd disable interrupts here. +*/ +static int umoncons_last_close(int major, int minor, void *arg) +{ + return 0; +} + + +/* + * Read one character from UART. + * + * return -1 if there's no data, otherwise return + * the character in lowest 8 bits of returned int. +*/ +static int umoncons_read(int minor) +{ + if ( !mon_gotachar() ) + return -1; + return mon_getchar(); +} + + +/* + * Write buffer to LCD + * + * return 1 on success, -1 on error +*/ +static ssize_t umoncons_write(int minor, const char *buf, size_t len) +{ + size_t i; + + for ( i=0 ; i<len ; i++ ) + mon_putchar( buf[i] ); + + return len; +} + + +/* Set up the uMon driver. */ +static void umoncons_init(int minor) +{ + rtems_umon_connect(); +} + +/* This is used for putchark support */ +static void umoncons_write_polled(int minor, char c) +{ + mon_putchar( c ); +} + +/* This is for setting baud rate, bits, etc. */ +static int umoncons_set_attributes(int minor, const struct termios *t) +{ + return 0; +} + +/***********************************************************************/ +/* + * The following functions are not used by TERMIOS, but other RTEMS + * functions use them instead. + */ +/***********************************************************************/ +/* + * Read from UART. This is used in the exit code, and can't + * rely on interrupts. +*/ +int umoncons_poll_read(int minor) +{ + if (!mon_gotachar()) + return -1; + return mon_getchar(); +} |