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
+);