mirror of https://github.com/EspoTek/Labrador.git
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/**
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* \file
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*
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* \brief AVR XMEGA USART in SPI mode driver functions.
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*
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* Copyright (c) 2014-2015 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
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*/
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#include "usart_spi.h"
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#include "sysclk.h"
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void usart_spi_init(USART_t *usart)
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{
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#ifdef USARTC0
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if((uint16_t)usart == (uint16_t)&USARTC0) {
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sysclk_enable_module(SYSCLK_PORT_C,PR_USART0_bm);
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}
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#endif
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#ifdef USARTC1
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else
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if((uint16_t)usart == (uint16_t)&USARTC1) {
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sysclk_enable_module(SYSCLK_PORT_C,PR_USART1_bm);
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}
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#endif
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#ifdef USARTD0
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else
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if((uint16_t)usart == (uint16_t)&USARTD0) {
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sysclk_enable_module(SYSCLK_PORT_D,PR_USART0_bm);
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}
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#endif
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#ifdef USARTD1
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else
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if((uint16_t)usart == (uint16_t)&USARTD1) {
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sysclk_enable_module(SYSCLK_PORT_D,PR_USART1_bm);
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}
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#endif
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#ifdef USARTE0
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else
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if((uint16_t)usart == (uint16_t)&USARTE0) {
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sysclk_enable_module(SYSCLK_PORT_E,PR_USART0_bm);
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}
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#endif
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#ifdef USARTE1
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else
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if((uint16_t)usart == (uint16_t)&USARTE1) {
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sysclk_enable_module(SYSCLK_PORT_E,PR_USART1_bm);
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}
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#endif
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#ifdef USARTF0
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else
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if((uint16_t)usart == (uint16_t)&USARTF0) {
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sysclk_enable_module(SYSCLK_PORT_F,PR_USART0_bm);
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}
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#endif
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#ifdef USARTF1
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else
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if((uint16_t)usart == (uint16_t)&USARTF1) {
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sysclk_enable_module(SYSCLK_PORT_F,PR_USART1_bm);
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}
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#endif
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}
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void usart_spi_setup_device(USART_t *usart, struct usart_spi_device *device,
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spi_flags_t flags, unsigned long baud_rate,
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board_spi_select_id_t sel_id)
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{
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usart_spi_options_t opt;
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opt.baudrate=baud_rate;
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opt.spimode=flags;
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opt.data_order=false;
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usart_init_spi(usart, &opt);
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}
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status_code_t usart_spi_write_packet(USART_t *usart,const uint8_t *data, size_t len)
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{
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size_t i=0;
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while(len) {
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usart_spi_transmit(usart,*(data+i));
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len--;
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i++;
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}
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return STATUS_OK;
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}
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status_code_t usart_spi_read_packet(USART_t *usart, uint8_t *data, size_t len)
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{
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while(len) {
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*data = usart_spi_transmit(usart, CONFIG_USART_SPI_DUMMY);
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len--;
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data++;
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}
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return STATUS_OK;
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}
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void usart_spi_select_device(USART_t *usart, struct usart_spi_device *device)
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{
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ioport_set_pin_low(device->id);
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}
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void usart_spi_deselect_device(USART_t *usart, struct usart_spi_device *device)
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{
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ioport_set_pin_high(device->id);
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}
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