/**************************************************************************
* arch/arm/src/kinetis/kinetis_lowputc.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <arch/irq.h>
#include <arch/board/board.h>
#include "up_internal.h"
#include "up_arch.h"
#include "kinetis_config.h"
#include "kinetis_internal.h"
#include "kinetis_uart.h"
#include "kinetis_pinmux.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/* Select UART parameters for the selected console */
#if defined(CONFIG_UART0_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART0_BASE
# define CONSOLE_BAUD CONFIG_UART0_BAUD
# define CONSOLE_BITS CONFIG_UART0_BITS
# define CONSOLE_PARITY CONFIG_UART0_PARITY
# define CONSOLE_2STOP CONFIG_UART0_2STOP
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART1_BASE
# define CONSOLE_BAUD CONFIG_UART1_BAUD
# define CONSOLE_BITS CONFIG_UART1_BITS
# define CONSOLE_PARITY CONFIG_UART1_PARITY
# define CONSOLE_2STOP CONFIG_UART1_2STOP
#elif defined(CONFIG_UART2_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART2_BASE
# define CONSOLE_BAUD CONFIG_UART2_BAUD
# define CONSOLE_BITS CONFIG_UART2_BITS
# define CONSOLE_PARITY CONFIG_UART2_PARITY
# define CONSOLE_2STOP CONFIG_UART2_2STOP
#elif defined(CONFIG_UART3_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART3_BASE
# define CONSOLE_BAUD CONFIG_UART3_BAUD
# define CONSOLE_BITS CONFIG_UART3_BITS
# define CONSOLE_PARITY CONFIG_UART3_PARITY
# define CONSOLE_2STOP CONFIG_UART3_2STOP
#elif defined(CONFIG_UART4_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART4_BASE
# define CONSOLE_BAUD CONFIG_UART4_BAUD
# define CONSOLE_BITS CONFIG_UART4_BITS
# define CONSOLE_PARITY CONFIG_UART4_PARITY
# define CONSOLE_2STOP CONFIG_UART4_2STOP
#elif defined(CONFIG_UART5_SERIAL_CONSOLE)
# define CONSOLE_BASE KINETIS_UART5_BASE
# define CONSOLE_BAUD CONFIG_UART5_BAUD
# define CONSOLE_BITS CONFIG_UART5_BITS
# define CONSOLE_PARITY CONFIG_UART5_PARITY
# define CONSOLE_2STOP CONFIG_UART5_2STOP
#elif defined(HAVE_CONSOLE)
# error "No CONFIG_UARTn_SERIAL_CONSOLE Setting"
#endif
/* Get word length setting for the console */
# warning "Missing logic"
/* Get parity setting for the console */
# warning "Missing logic"
/* Get stop-bit setting for the console and UART0-3 */
# warning "Missing logic"
/* Select a divider to produce the UART CLK */
# warning "Missing logic"
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_lowputc
*
* Description:
* Output one byte on the serial console
*
**************************************************************************/
void up_lowputc(char ch)
{
#if defined HAVE_UART_DEVICE && defined HAVE_CONSOLE
# warning "Missing logic"
#endif
}
/**************************************************************************
* Name: kinetis_lowsetup
*
* Description:
* This performs basic initialization of the UART used for the serial
* console. Its purpose is to get the console output availabe as soon
* as possible.
*
* The UART0/1/2/3 peripherals are configured using the following registers:
* 1. Power: In the PCONP register, set bits PCUART0/1/2/3.
* On reset, UART0 and UART 1 are enabled (PCUART0 = 1 and PCUART1 = 1)
* and UART2/3 are disabled (PCUART1 = 0 and PCUART3 = 0).
* 2. Peripheral clock: In the PCLKSEL0 register, select PCLK_UART0 and
* PCLK_UART1; in the PCLKSEL1 register, select PCLK_UART2 and PCLK_UART3.
* 3. Baud rate: In the LCR register, set bit DLAB = 1. This enables access
* to registers DLL and DLM for setting the baud rate. Also, if needed,
* set the fractional baud rate in the fractional divider
* 4. UART FIFO: Use bit FIFO enable (bit 0) in FCR register to
* enable FIFO.
* 5. Pins: Select UART pins through the PINSEL registers and pin modes
* through the PINMODE registers. UART receive pins should not have
* pull-down resistors enabled.
* 6. Interrupts: To enable UART interrupts set bit DLAB = 0 in the LCRF
* register. This enables access to IER. Interrupts are enabled
* in the NVIC using the appropriate Interrupt Set Enable register.
* 7. DMA: UART transmit and receive functions can operate with the
* GPDMA controller.
*
**************************************************************************/
void kinetis_lowsetup(void)
{
#ifdef HAVE_UART_DEVICE
/* Step 1: Enable power for all enabled UARTs */
# warning "Missing logic"
/* Step 2: Enable peripheral clocking for all enabled UARTs */
# warning "Missing logic"
/* Configure UART pins for the all enabled UARTs */
#ifdef CONFIG_KINETIS_UART0
kinetis_configgpio(GPIO_UART0_TX);
kinetis_configgpio(GPIO_UART0_RX);
#endif
#ifdef CONFIG_KINETIS_UART1
kinetis_configgpio(GPIO_UART1_TX);
kinetis_configgpio(GPIO_UART1_RX);
#endif
#ifdef CONFIG_KINETIS_UART2
kinetis_configgpio(GPIO_UART2_TX);
kinetis_configgpio(GPIO_UART2_RX);
#endif
#ifdef CONFIG_KINETIS_UART3
kinetis_configgpio(GPIO_UART3_TX);
kinetis_configgpio(GPIO_UART3_RX);
#endif
#ifdef CONFIG_KINETIS_UART4
kinetis_configgpio(GPIO_UART4_TX);
kinetis_configgpio(GPIO_UART4_RX);
#endif
#ifdef CONFIG_KINETIS_UART5
kinetis_configgpio(GPIO_UART5_TX);
kinetis_configgpio(GPIO_UART5_RX);
#endif
/* Configure the console (only) */
#if defined(HAVE_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
kinetis_uartconfigure(CONSOLE_BASE, CONSOLE_BAUD, CONSOLE_PARITY,
CONSOLE_BITS, CONSOLE_2STOP);
#endif
#endif /* HAVE_UART_DEVICE */
}
/******************************************************************************
* Name: kinetis_uartreset
*
* Description:
* Reset a UART.
*
******************************************************************************/
#ifdef HAVE_UART_DEVICE
void kinetis_uartreset(uintptr_t uart_base)
{
# warning "Missing logic"
}
#endif
/******************************************************************************
* Name: kinetis_uartconfigure
*
* Description:
* Configure a UART as a RS-232 UART.
*
******************************************************************************/
#ifdef HAVE_UART_DEVICE
void kinetis_uartconfigure(uintptr_t uart_base, uint32_t baudrate,
unsigned int parity, unsigned int nbits,
bool stop2)
{
# warning "Missing logic"
}
#endif
