e2af903d05
This uses the core/dev/spi.h header and implements the spi_init()
function and the various macros for SPI operation. ssi.h contains all of
the register locations and information.
This implementation is not very versatile, mostly because I don't how to
make it flexible in the contiki system. It supports pin muxing for the
four spi pins, but other than that picks sensible defaults.
The SPI macros (like SPI_READ()) are defined in
cpu/cc2538/spi-arch.h. In order to use the SPI driver, add the following
includes to your project:
#include "spi-arch.h
#include "dev/spi.h"
209 lines
6.9 KiB
C
209 lines
6.9 KiB
C
/*
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* Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
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* All rights reserved.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \addtogroup cc2538
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* @{
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*
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* \defgroup cc2538-smartrf SmartRF06EB Peripherals
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*
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* Defines related to the SmartRF06EB
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*
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* This file provides connectivity information on LEDs, Buttons, UART and
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* other SmartRF peripherals
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*
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* Notably, PC0 is used to drive LED1 as well as the USB D+ pullup. Therefore
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* when USB is enabled, LED1 can not be driven by firmware.
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*
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* This file can be used as the basis to configure other platforms using the
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* cc2538 SoC.
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* @{
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*
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* \file
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* Header file with definitions related to the I/O connections on the TI
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* SmartRF06EB
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*
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* \note Do not include this file directly. It gets included by contiki-conf
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* after all relevant directives have been set.
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*/
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#ifndef BOARD_H_
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#define BOARD_H_
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#include "dev/gpio.h"
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#include "dev/nvic.h"
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/*---------------------------------------------------------------------------*/
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/** \name SmartRF LED configuration
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*
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* LEDs on the SmartRF06 (EB and BB) are connected as follows:
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* - LED1 (Red) -> PC0
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* - LED2 (Yellow) -> PC1
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* - LED3 (Green) -> PC2
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* - LED4 (Orange) -> PC3
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*
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* LED1 shares the same pin with the USB pullup
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* @{
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*/
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/*---------------------------------------------------------------------------*/
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/* Some files include leds.h before us, so we need to get rid of defaults in
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* leds.h before we provide correct definitions */
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#undef LEDS_GREEN
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#undef LEDS_YELLOW
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#undef LEDS_RED
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#undef LEDS_CONF_ALL
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#define LEDS_YELLOW 2 /**< LED2 (Yellow) -> PC1 */
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#define LEDS_GREEN 4 /**< LED3 (Green) -> PC2 */
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#define LEDS_ORANGE 8 /**< LED4 (Orange) -> PC3 */
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#if USB_SERIAL_CONF_ENABLE
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#define LEDS_CONF_ALL 14
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#define LEDS_RED LEDS_ORANGE
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#else
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#define LEDS_CONF_ALL 15
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#define LEDS_RED 1 /**< LED1 (Red) -> PC0 */
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#endif
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/* Notify various examples that we have LEDs */
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#define PLATFORM_HAS_LEDS 1
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/** @} */
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/*---------------------------------------------------------------------------*/
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/** \name USB configuration
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*
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* The USB pullup is driven by PC0 and is shared with LED1
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*/
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#define USB_PULLUP_PORT GPIO_C_BASE
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#define USB_PULLUP_PIN 0
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#define USB_PULLUP_PIN_MASK (1 << USB_PULLUP_PIN)
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/** @} */
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/*---------------------------------------------------------------------------*/
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/** \name UART configuration
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*
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* On the SmartRF06EB, the UART (XDS back channel) is connected to the
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* following ports/pins
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* - RX: PA0
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* - TX: PA1
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* - CTS: PB0 (Can only be used with UART1)
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* - RTS: PD3 (Can only be used with UART1)
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*
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* We configure the port to use UART0. To use UART1, change UART_CONF_BASE
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* @{
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*/
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#define UART_CONF_BASE UART_0_BASE
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#define UART_RX_PORT GPIO_A_NUM
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#define UART_RX_PIN 0
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#define UART_TX_PORT GPIO_A_NUM
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#define UART_TX_PIN 1
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#define UART_CTS_PORT GPIO_B_NUM
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#define UART_CTS_PIN 0
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#define UART_RTS_PORT GPIO_D_NUM
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#define UART_RTS_PIN 3
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/** @} */
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/*---------------------------------------------------------------------------*/
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/** \name SmartRF Button configuration
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*
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* Buttons on the SmartRF06 are connected as follows:
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* - BUTTON_SELECT -> PA3
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* - BUTTON_LEFT -> PC4
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* - BUTTON_RIGHT -> PC5
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* - BUTTON_UP -> PC6
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* - BUTTON_DOWN -> PC7
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* @{
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*/
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/** BUTTON_SELECT -> PA3 */
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#define BUTTON_SELECT_PORT_NO GPIO_A_NUM
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#define BUTTON_SELECT_PIN 3
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#define BUTTON_SELECT_PORT GPIO_A_BASE
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#define BUTTON_SELECT_PIN_MASK (1 << BUTTON_SELECT_PIN)
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#define BUTTON_SELECT_VECTOR NVIC_INT_GPIO_PORT_A
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/** BUTTON_LEFT -> PC4 */
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#define BUTTON_LEFT_PORT_NO GPIO_C_NUM
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#define BUTTON_LEFT_PIN 4
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#define BUTTON_LEFT_PORT GPIO_C_BASE
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#define BUTTON_LEFT_PIN_MASK (1 << BUTTON_LEFT_PIN)
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#define BUTTON_LEFT_VECTOR NVIC_INT_GPIO_PORT_C
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/** BUTTON_RIGHT -> PC5 */
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#define BUTTON_RIGHT_PORT_NO GPIO_C_NUM
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#define BUTTON_RIGHT_PIN 5
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#define BUTTON_RIGHT_PORT GPIO_C_BASE
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#define BUTTON_RIGHT_PIN_MASK (1 << BUTTON_RIGHT_PIN)
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#define BUTTON_RIGHT_VECTOR NVIC_INT_GPIO_PORT_C
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/** BUTTON_UP -> PC6 */
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#define BUTTON_UP_PORT_NO GPIO_C_NUM
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#define BUTTON_UP_PIN 6
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#define BUTTON_UP_PORT GPIO_C_BASE
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#define BUTTON_UP_PIN_MASK (1 << BUTTON_UP_PIN)
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#define BUTTON_UP_VECTOR NVIC_INT_GPIO_PORT_C
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/** BUTTON_DOWN -> PC7 */
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#define BUTTON_DOWN_PORT_NO GPIO_C_NUM
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#define BUTTON_DOWN_PIN 7
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#define BUTTON_DOWN_PORT GPIO_C_BASE
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#define BUTTON_DOWN_PIN_MASK (1 << BUTTON_DOWN_PIN)
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#define BUTTON_DOWN_VECTOR NVIC_INT_GPIO_PORT_C
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/* Notify various examples that we have Buttons */
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#define PLATFORM_HAS_BUTTON 1
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/** @} */
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/*---------------------------------------------------------------------------*/
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/**
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* \name SPI configuration
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*
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* These values configure which CC2538 pins to use for the SPI lines.
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* @{
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*/
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#define CC2538_SPI_CLK_PORT_NUM GPIO_A_NUM
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#define CC2538_SPI_CLK_PIN_NUM 2
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#define CC2538_SPI_MOSI_PORT_NUM GPIO_A_NUM
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#define CC2538_SPI_MOSI_PIN_NUM 4
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#define CC2538_SPI_MISO_PORT_NUM GPIO_A_NUM
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#define CC2538_SPI_MISO_PIN_NUM 5
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#define CC2538_SPI_SEL_PORT_NUM GPIO_B_NUM
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#define CC2538_SPI_SEL_PIN_NUM 5
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/** @} */
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/*---------------------------------------------------------------------------*/
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/**
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* \name Device string used on startup
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* @{
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*/
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#define BOARD_STRING "TI SmartRF06 + cc2538EM"
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/** @} */
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#endif /* BOARD_H_ */
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/**
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* @}
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* @}
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*/
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