af27d2d252
Because the CC2538 has a multi-byte SPI RX FIFO, flushing the buffer requires more than just a single read. This adds a loop that empties the entire RX buffer on a FLUSH(). Different SPI chips needs different SPI settings. This commit adds a function that allows chip drivers to configure the SPI peripheral before using it. The frame pin the driver was using as a chip select does not work as most devices expect it to. It toggles after every byte, and most chips interpret that as end of message. To make drivers more reliable, each chip driver should setup a GPIO and assert it as needed.
211 lines
6.7 KiB
C
211 lines
6.7 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_NUM
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#define USB_PULLUP_PIN 0
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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 GPIO_A_NUM
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#define BUTTON_SELECT_PIN 3
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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 GPIO_C_NUM
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#define BUTTON_LEFT_PIN 4
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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 GPIO_C_NUM
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#define BUTTON_RIGHT_PIN 5
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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 GPIO_C_NUM
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#define BUTTON_UP_PIN 6
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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 GPIO_C_NUM
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#define BUTTON_DOWN_PIN 7
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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 ADC configuration
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*
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* These values configure which CC2538 pins and ADC channels to use for the ADC
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* inputs.
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*
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* ADC inputs can only be on port A.
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* @{
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*/
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#define ADC_ALS_PWR_PORT GPIO_A_NUM /**< ALS power GPIO control port */
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#define ADC_ALS_PWR_PIN 7 /**< ALS power GPIO control pin */
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#define ADC_ALS_OUT_PIN 6 /**< ALS output ADC input pin on port A */
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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 SPI_CLK_PORT GPIO_A_NUM
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#define SPI_CLK_PIN 2
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#define SPI_MOSI_PORT GPIO_A_NUM
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#define SPI_MOSI_PIN 4
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#define SPI_MISO_PORT GPIO_A_NUM
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#define SPI_MISO_PIN 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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