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Diffstat (limited to '')
-rw-r--r-- | bsps/arm/stm32h7/console/printk-support.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/bsps/arm/stm32h7/console/printk-support.c b/bsps/arm/stm32h7/console/printk-support.c new file mode 100644 index 0000000000..e663c10d89 --- /dev/null +++ b/bsps/arm/stm32h7/console/printk-support.c @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/* + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <bsp.h> +#include <rtems/bspIo.h> +#include <rtems/sysinit.h> + +#include <stm32h7/hal.h> + +static void stm32h7_output_char(char c) +{ + stm32h7_uart_polled_write(&STM32H7_PRINTK_INSTANCE.device, c); +} + +static void stm32h7_output_char_init(void) +{ + UART_HandleTypeDef *uart; + + uart = &STM32H7_PRINTK_INSTANCE.uart; + (void) HAL_UART_Init(uart); + (void) HAL_UARTEx_SetTxFifoThreshold(uart, UART_TXFIFO_THRESHOLD_1_8); + (void) HAL_UARTEx_SetRxFifoThreshold(uart, UART_RXFIFO_THRESHOLD_1_8); + (void) HAL_UARTEx_EnableFifoMode(uart); + + BSP_output_char = stm32h7_output_char; +} + +static void stm32h7_output_char_init_early(char c) +{ + stm32h7_output_char_init(); + stm32h7_output_char(c); +} + +static int stm32h7_poll_char(void) +{ + return stm32h7_uart_polled_read(&STM32H7_PRINTK_INSTANCE.device); +} + +BSP_output_char_function_type BSP_output_char = stm32h7_output_char_init_early; + +BSP_polling_getchar_function_type BSP_poll_char = stm32h7_poll_char; + +RTEMS_SYSINIT_ITEM( + stm32h7_output_char_init, + RTEMS_SYSINIT_BSP_START, + RTEMS_SYSINIT_ORDER_LAST_BUT_5 +); |