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+/************************************************************************************
+ * arch/arm/src/kl/kl_lowputc.h
+ *
+ * Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * 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.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_KL_KINETIS_LOWPUTC_H
+#define __ARCH_ARM_SRC_KL_KINETIS_LOWPUTC_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+#include "kl_config.h"
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Name: kl_lowsetup
+ *
+ * Description:
+ * Called at the very beginning of _start. Performs low level initialization.
+ *
+ ************************************************************************************/
+
+void kl_lowsetup(void);
+
+/****************************************************************************
+ * Name: kl_setbaud
+ *
+ * Description:
+ * Set the BAUD divxisor for the selected UART
+ *
+ * Mode DIV_X_EN DIV_X_ONE Divider X BRD (Baud rate equation)
+ * -------------------------------------------------------------
+ * 0 Disable 0 B A UART_CLK / [16 * (A+2)]
+ * 1 Enable 0 B A UART_CLK / [(B+1) * (A+2)] , B must >= 8
+ * 2 Enable 1 Don't care A UART_CLK / (A+2), A must >=3
+ *
+ * Here we assume that the default clock source for the UART modules is
+ * the external high speed crystal.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_UART
+void kl_setbaud(uintptr_t base, uint32_t baud);
+#endif
+
+/****************************************************************************
+ * Name: kl_lowputc
+ *
+ * Description:
+ * Output one character to the UART using a simple polling method.
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_SERIAL_CONSOLE
+void kl_lowputc(uint32_t ch);
+#endif
+
+void kl_uartconfigure(uintptr_t uart_base, uint32_t baud,
+ uint32_t clock, unsigned int parity,
+ unsigned int nbits);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_KL_KINETIS_LOWPUTC_H */