mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-11-19 03:05:14 +00:00
76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2015, Intel Corporation. All rights reserved.
|
||
|
|
*
|
||
|
|
* 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 of the copyright holder 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 "uart.h"
|
||
|
|
#include "uart-16x50.h"
|
||
|
|
#include <assert.h>
|
||
|
|
|
||
|
|
static uart_16x50_driver_t quarkX1000_uart0;
|
||
|
|
static uart_16x50_driver_t quarkX1000_uart1;
|
||
|
|
|
||
|
|
/* Divisor setting for 115200 baud from section 18.2.2 of Intel Quark SoC
|
||
|
|
* X1000 Datasheet.
|
||
|
|
*/
|
||
|
|
#define QUARK_X1000_UART_DL_115200 24
|
||
|
|
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
/**
|
||
|
|
* \brief Initialize a UART.
|
||
|
|
* \param dev Device to initialize.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
quarkX1000_uart_init(quarkX1000_uart_dev_t dev)
|
||
|
|
{
|
||
|
|
pci_config_addr_t pci_addr;
|
||
|
|
|
||
|
|
assert((dev == QUARK_X1000_UART_0) || (dev == QUARK_X1000_UART_1));
|
||
|
|
|
||
|
|
pci_addr.raw = 0;
|
||
|
|
|
||
|
|
/* PCI addresses from section 18.4 of Intel Quark SoC X1000 Datasheet. */
|
||
|
|
pci_addr.dev = 20;
|
||
|
|
pci_addr.func = (dev == QUARK_X1000_UART_0) ? 1 : 5;
|
||
|
|
|
||
|
|
uart_16x50_init((dev == QUARK_X1000_UART_0) ? &quarkX1000_uart0 : &quarkX1000_uart1, pci_addr, QUARK_X1000_UART_DL_115200);
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
/**
|
||
|
|
* \brief Transmit a character via a UART.
|
||
|
|
* \param dev Device to use.
|
||
|
|
* \param c Character to transmit.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
quarkX1000_uart_tx(quarkX1000_uart_dev_t dev, uint8_t c)
|
||
|
|
{
|
||
|
|
assert((dev == QUARK_X1000_UART_0) || (dev == QUARK_X1000_UART_1));
|
||
|
|
uart_16x50_tx((dev == QUARK_X1000_UART_0) ? quarkX1000_uart0 : quarkX1000_uart1, c);
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|