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/*
* Copyright (c) 2015, Freescale Semiconductor, Inc.
* Copyright (c) 2016, Toradex AG
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o 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.
*
* o Neither the name of Freescale Semiconductor, Inc. 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 HOLDER 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.
*/
#include <lpuart_vf6xx.h>
/*******************************************************************************
* Code
******************************************************************************/
/*******************************************************************************
* Initialization and Configuration functions
******************************************************************************/
/*FUNCTION**********************************************************************
*
* Function Name : LPUART_Init
* Description : This function initializes the module according to uart
* initialize structure.
*
*END**************************************************************************/
void LPUART_Init(UART_Type* base, uart_init_config_t* initConfig)
{
assert(initConfig);
LPUART_Disable(base);
LPUART_SetParity(base, initConfig->parity);
LPUART_SetBaudRate(base, initConfig->clockRate, initConfig->baudRate);
}
/*FUNCTION**********************************************************************
*
* Function Name : LPUART_SetBaudRate
* Description : This function configures uart module baud rate.
*
*END**************************************************************************/
void LPUART_SetBaudRate(UART_Type* base, uint32_t clockRate, uint32_t baudRate)
{
uint32_t sbr, brfa;
uint8_t cr4 = 0, bdh = 0;
sbr = clockRate / (16 * baudRate);
brfa = ((clockRate - (16 * sbr * baudRate)) * 2) / baudRate;
bdh &= ~UART_BDH_SBR_MASK;
bdh |= (sbr >> 8) & UART_BDH_SBR_MASK;
cr4 &= ~UART_C4_BRFA_MASK;
brfa &= UART_C4_BRFA_MASK;
UART_C4_REG(base) = (cr4 | brfa);
UART_BDH_REG(base) = bdh;
UART_BDL_REG(base) = sbr;
}
/*******************************************************************************
* Hardware Flow control and Modem Signal functions
******************************************************************************/
/*FUNCTION**********************************************************************
*
* Function Name : LPUART_SetRtsFlowCtrl
* Description : This function is used to set the enable condition of RTS
* auto control.
*
*END**************************************************************************/
void LPUART_SetRtsFlowCtrl(UART_Type* base, bool enable)
{
if (enable)
UART_MODEM_REG(base) &= ~UART_FLOWCONTROL_RTS;
else
UART_MODEM_REG(base) |= UART_FLOWCONTROL_RTS;
}
/*FUNCTION**********************************************************************
*
* Function Name : LPUART_SetCtsFlowCtrl
* Description : This function is used to set the enable condition of CTS
* auto control.
*
*END**************************************************************************/
void LPUART_SetCtsFlowCtrl(UART_Type* base, bool enable)
{
if (enable)
UART_MODEM_REG(base) |= UART_FLOWCONTROL_CTS;
else
UART_MODEM_REG(base) &= ~UART_FLOWCONTROL_CTS;
}
/*FUNCTION**********************************************************************
*
* Function Name : LPUART_SetFlowCtrl
* Description : This function is used to set the enable condition of RTS, CTS
* auto control.
*
*END**************************************************************************/
void LPUART_SetFlowCtrl(UART_Type* base, bool enable)
{
if (enable)
UART_MODEM_REG(base) |= UART_FLOWCONTROL_MASK;
else
UART_MODEM_REG(base) &= ~UART_FLOWCONTROL_MASK;
}
/*******************************************************************************
* EOF
******************************************************************************/
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