diff options
author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-24 13:23:42 +0000 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2011-09-24 13:23:42 +0000 |
commit | e263c1607a12b3df0ef0eaf10477eaabd3e763a7 (patch) | |
tree | afc29093490341c4d2a270d1ccc6edcadb51e8b0 /c/src/lib/libbsp/arm/lm3s69xx/console | |
parent | 2011-09-24 Sebastian Huber <sebastian.huber@embedded-brains.de> (diff) | |
download | rtems-e263c1607a12b3df0ef0eaf10477eaabd3e763a7.tar.bz2 |
2011-09-24 Sebastian Huber <sebastian.huber@embedded-brains.de>
* 0001-Fixed-interrupt-handling-for-ARMv7M.patch,
0002-Fixed-system-handler-priority-register-access.patch,
0003-Disable-priority_mask-unused-for-NVIC.patch, 0004-Typo.patch,
0005-Evil-hack-for-BASEPRI-BASEPRI_MAX.patch,
0006-Evil-hack-to-increase-the-RAM-size.patch, bsp_specs, ChangeLog,
clock/clock-config.c, configure.ac, console/console-config.c,
console/uart.c, .cvsignore, include/bsp.h, include/.cvsignore,
include/irq.h, include/lm3s69xx.h, include/uart.h, irq/irq.c,
make/custom/lm3s6965.cfg, make/custom/lm3s69xx.inc, Makefile.am,
README, start/start.S, startup/bspreset.c, startup/bspstart.c,
startup/bspstarthook.c, startup/linkcmds.lm3s6965, timer/timer.c: New
files.
Diffstat (limited to 'c/src/lib/libbsp/arm/lm3s69xx/console')
-rw-r--r-- | c/src/lib/libbsp/arm/lm3s69xx/console/console-config.c | 79 | ||||
-rw-r--r-- | c/src/lib/libbsp/arm/lm3s69xx/console/uart.c | 107 |
2 files changed, 186 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/lm3s69xx/console/console-config.c b/c/src/lib/libbsp/arm/lm3s69xx/console/console-config.c new file mode 100644 index 0000000000..00864b5bc6 --- /dev/null +++ b/c/src/lib/libbsp/arm/lm3s69xx/console/console-config.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2011 Sebastian Huber. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * 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 <rtems/bspIo.h> + +#include <libchip/serial.h> + +#include <bspopts.h> +#include <bsp/irq.h> +#include <bsp/uart.h> +#include <bsp/lm3s69xx.h> + +console_tbl Console_Port_Tbl [] = { + #ifdef LM3S69XX_ENABLE_UART_0 + { + .sDeviceName = "/dev/ttyS0", + .deviceType = SERIAL_CUSTOM, + .pDeviceFns = &lm3s69xx_uart_fns, + .ulCtrlPort1 = LM3S69XX_UART_0_BASE, + .ulClock = LM3S69XX_UART_BAUD, + .ulIntVector = LM3S69XX_IRQ_UART_0 + }, + #endif + #ifdef LM3S69XX_ENABLE_UART_1 + { + .sDeviceName = "/dev/ttyS1", + .deviceType = SERIAL_CUSTOM, + .pDeviceFns = &lm3s69xx_uart_fns, + .ulCtrlPort1 = LM3S69XX_UART_1_BASE, + .ulClock = LM3S69XX_UART_BAUD, + .ulIntVector = LM3S69XX_IRQ_UART_1 + } + #endif + #ifdef LM3S69XX_ENABLE_UART_2 + { + .sDeviceName = "/dev/ttyS2", + .deviceType = SERIAL_CUSTOM, + .pDeviceFns = &lm3s69xx_uart_fns, + .ulCtrlPort1 = LM3S69XX_UART_2_BASE, + .ulClock = LM3S69XX_UART_BAUD, + .ulIntVector = LM3S69XX_IRQ_UART_2 + } + #endif +}; + +#define PORT_COUNT (sizeof(Console_Port_Tbl) / sizeof(Console_Port_Tbl [0])) + +unsigned long Console_Port_Count = PORT_COUNT; + +rtems_device_minor_number Console_Port_Minor; + +console_data Console_Port_Data [PORT_COUNT]; + +static void output_char(char c) +{ + const console_fns *con = Console_Port_Tbl [Console_Port_Minor].pDeviceFns; + + if (c == '\n') { + con->deviceWritePolled((int) Console_Port_Minor, '\r'); + } + con->deviceWritePolled((int) Console_Port_Minor, c); +} + +BSP_output_char_function_type BSP_output_char = output_char; + +BSP_polling_getchar_function_type BSP_poll_char = NULL; diff --git a/c/src/lib/libbsp/arm/lm3s69xx/console/uart.c b/c/src/lib/libbsp/arm/lm3s69xx/console/uart.c new file mode 100644 index 0000000000..f85b23e55a --- /dev/null +++ b/c/src/lib/libbsp/arm/lm3s69xx/console/uart.c @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2011 Sebastian Huber. All rights reserved. + * + * embedded brains GmbH + * Obere Lagerstr. 30 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * 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 <bspopts.h> +#include <bsp/uart.h> +#include <libchip/sersupp.h> + +static volatile lm3s69xx_uart *get_uart_regs(int minor) +{ + console_tbl *ct = &Console_Port_Tbl [minor]; + + return (lm3s69xx_uart *) ct->ulCtrlPort1; +} + +static void initialize(int minor) +{ + volatile lm3s69xx_uart *uart = get_uart_regs(minor); + + uart->ctl = 0; + uart->lcrh = UARTLCRH_WLEN(0x3) | UARTLCRH_FEN; + uart->ctl = UARTCTL_RXE | UARTCTL_TXE | UARTCTL_UARTEN; +} + +static int first_open(int major, int minor, void *arg) +{ + rtems_libio_open_close_args_t *oc = (rtems_libio_open_close_args_t *) arg; + struct rtems_termios_tty *tty = (struct rtems_termios_tty *) oc->iop->data1; + console_tbl *ct = &Console_Port_Tbl [minor]; + console_data *cd = &Console_Port_Data [minor]; + + cd->termios_data = tty; + rtems_termios_set_initial_baud(tty, LM3S69XX_UART_BAUD); + + return 0; +} + +static int last_close(int major, int minor, void *arg) +{ + return 0; +} + +static int read_polled(int minor) +{ + volatile lm3s69xx_uart *uart = get_uart_regs(minor); + + if ((uart->fr & UARTFR_RXFE) != 0) { + return -1; + } else { + return UARTDR_DATA(uart->dr); + } +} + +static void write_polled(int minor, char c) +{ + volatile lm3s69xx_uart *uart = get_uart_regs(minor); + + while ((uart->fr & UARTFR_TXFF) != 0) { + /* Wait */ + } + + uart->dr = UARTDR_DATA(c); +} + +static ssize_t write_support_polled( + int minor, + const char *s, + size_t n +) +{ + ssize_t i = 0; + + for (i = 0; i < n; ++i) { + write_polled(minor, s [i]); + } + + return n; +} + +static int set_attribues(int minor, const struct termios *term) +{ + return -1; +} + +console_fns lm3s69xx_uart_fns = { + .deviceProbe = libchip_serial_default_probe, + .deviceFirstOpen = first_open, + .deviceLastClose = last_close, + .deviceRead = read_polled, + .deviceWrite = write_support_polled, + .deviceInitialize = initialize, + .deviceWritePolled = write_polled, + .deviceSetAttributes = set_attribues, + .deviceOutputUsesInterrupts = false +}; |