diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/console/debugputs.c')
-rw-r--r-- | c/src/lib/libbsp/sparc/leon3/console/debugputs.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/console/debugputs.c b/c/src/lib/libbsp/sparc/leon3/console/debugputs.c new file mode 100644 index 0000000000..066a584386 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/console/debugputs.c @@ -0,0 +1,104 @@ +/* + * This file contains the TTY driver for the serial ports on the LEON. + * + * This driver uses the termios pseudo driver. + * + * COPYRIGHT (c) 1989-1999. + * On-Line Applications Research Corporation (OAR). + * + * Modified for LEON3 BSP. + * COPYRIGHT (c) 2004. + * Gaisler Research. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include <bsp.h> +#include <rtems/libio.h> +#include <stdlib.h> +#include <assert.h> + +/* + * console_outbyte_polled + * + * This routine transmits a character using polling. + */ + +void console_outbyte_polled( + int port, + unsigned char ch +) +{ + if ((port >= 0) && (port <= CONFIGURE_NUMBER_OF_TERMIOS_PORTS)) + { + while ( (LEON3_Console_Uart[port]->status & LEON_REG_UART_STATUS_THE) == 0 ); + LEON3_Console_Uart[port]->data = (unsigned int) ch; + } +} + +/* + * console_inbyte_nonblocking + * + * This routine polls for a character. + */ + +int console_inbyte_nonblocking( int port ) +{ + + if ((port >=0) && (port < CONFIGURE_NUMBER_OF_TERMIOS_PORTS)) + { + + if (LEON3_Console_Uart[port]->status & LEON_REG_UART_STATUS_ERR) { + LEON3_Console_Uart[port]->status = ~LEON_REG_UART_STATUS_ERR; + } + + if ((LEON3_Console_Uart[port]->status & LEON_REG_UART_STATUS_DR) == 0) + return -1; + return (int) LEON3_Console_Uart[port]->data; + } + + else + { + assert( 0 ); + } + + return -1; +} + +/* + * DEBUG_puts + * + * This should be safe in the event of an error. It attempts to insure + * that no TX empty interrupts occur while it is doing polled IO. Then + * it restores the state of that external interrupt. + * + * Input parameters: + * string - pointer to debug output string + * + * Output parameters: NONE + * + * Return values: NONE + */ + +void DEBUG_puts( + char *string +) +{ + char *s; + /* unsigned32 old_level; */ + + /* LEON_Disable_interrupt( LEON_INTERRUPT_UART_1_RX_TX, old_level ); */ + sparc_disable_interrupts(); + LEON3_Console_Uart[0]->ctrl = LEON_REG_UART_CTRL_TE; + for ( s = string ; *s ; s++ ) + console_outbyte_polled( 0, *s ); + + console_outbyte_polled( 0, '\r' ); + console_outbyte_polled( 0, '\n' ); + sparc_enable_interrupts(); + /* LEON_Restore_interrupt( LEON_INTERRUPT_UART_1_RX_TX, old_level ); */ +} |