contiki/cpu/cc2538/dev/soc-adc.h
Benoît Thébaudeau dbba311270 cc2538: Add adc driver and example
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
2013-12-06 22:07:45 +01:00

141 lines
6.5 KiB
C

/*
* Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
* 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.
*/
/**
* \addtogroup cc2538
* @{
*
* \defgroup cc2538-soc-adc cc2538 ADC and RNG
*
* Register declarations for the cc2538 ADC and H/W RNG
* @{
*
* \file
* Header file with register declarations for the cc2538 ADC and H/W RNG
*/
#ifndef SOC_ADC_H_
#define SOC_ADC_H_
/*---------------------------------------------------------------------------*/
/** \name ADC and RNG Register offset declarations
* @{
*/
#define SOC_ADC_ADCCON1 0x400D7000 /**< ADC Control 1 */
#define SOC_ADC_ADCCON2 0x400D7004 /**< ADC Control 2 */
#define SOC_ADC_ADCCON3 0x400D7008 /**< ADC Control 3 */
#define SOC_ADC_ADCL 0x400D700C /**< ADC Result, least significant part */
#define SOC_ADC_ADCH 0x400D7010 /**< ADC Result, most significant part */
#define SOC_ADC_RNDL 0x400D7014 /**< RNG low byte */
#define SOC_ADC_RNDH 0x400D7018 /**< RNG high byte */
#define SOC_ADC_CMPCTL 0x400D7024 /**< Analog comparator control and status */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_ADCCON1 register bit masks
* @{
*/
#define SOC_ADC_ADCCON1_EOC 0x00000080 /**< End of conversion */
#define SOC_ADC_ADCCON1_ST 0x00000040 /**< Start conversion */
#define SOC_ADC_ADCCON1_STSEL 0x00000030 /**< Start select */
#define SOC_ADC_ADCCON1_RCTRL 0x0000000C /**< Controls the 16-bit RNG */
#define SOC_ADC_ADCCON1_RCTRL1 0x00000008 /**< RCTRL high bit */
#define SOC_ADC_ADCCON1_RCTRL0 0x00000004 /**< RCTRL low bit */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_ADCCON2 register bit masks
* @{
*/
#define SOC_ADC_ADCCON2_SREF 0x000000C0 /**< Reference voltage for sequence */
#define SOC_ADC_ADCCON2_SDIV 0x00000030 /**< Decimation rate for sequence */
#define SOC_ADC_ADCCON2_SCH 0x0000000F /**< Sequence channel select */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_ADCCON3 register bit masks
* @{
*/
#define SOC_ADC_ADCCON3_EREF 0x000000C0 /**< Reference voltage for extra */
#define SOC_ADC_ADCCON3_EDIV 0x00000030 /**< Decimation rate for extra */
#define SOC_ADC_ADCCON3_ECH 0x0000000F /**< Single channel select */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_ADCCONx registers field values
* @{
*/
#define SOC_ADC_ADCCON_REF_INT (0 << 6) /**< Internal reference */
#define SOC_ADC_ADCCON_REF_EXT_SINGLE (1 << 6) /**< External reference on AIN7 pin */
#define SOC_ADC_ADCCON_REF_AVDD5 (2 << 6) /**< AVDD5 pin */
#define SOC_ADC_ADCCON_REF_EXT_DIFF (3 << 6) /**< External reference on AIN6-AIN7 differential input */
#define SOC_ADC_ADCCON_DIV_64 (0 << 4) /**< 64 decimation rate (7 bits ENOB) */
#define SOC_ADC_ADCCON_DIV_128 (1 << 4) /**< 128 decimation rate (9 bits ENOB) */
#define SOC_ADC_ADCCON_DIV_256 (2 << 4) /**< 256 decimation rate (10 bits ENOB) */
#define SOC_ADC_ADCCON_DIV_512 (3 << 4) /**< 512 decimation rate (12 bits ENOB) */
#define SOC_ADC_ADCCON_CH_AIN0 0x0 /**< AIN0 */
#define SOC_ADC_ADCCON_CH_AIN1 0x1 /**< AIN1 */
#define SOC_ADC_ADCCON_CH_AIN2 0x2 /**< AIN2 */
#define SOC_ADC_ADCCON_CH_AIN3 0x3 /**< AIN3 */
#define SOC_ADC_ADCCON_CH_AIN4 0x4 /**< AIN4 */
#define SOC_ADC_ADCCON_CH_AIN5 0x5 /**< AIN5 */
#define SOC_ADC_ADCCON_CH_AIN6 0x6 /**< AIN6 */
#define SOC_ADC_ADCCON_CH_AIN7 0x7 /**< AIN7 */
#define SOC_ADC_ADCCON_CH_AIN0_AIN1 0x8 /**< AIN0-AIN1 */
#define SOC_ADC_ADCCON_CH_AIN2_AIN3 0x9 /**< AIN2-AIN3 */
#define SOC_ADC_ADCCON_CH_AIN4_AIN5 0xA /**< AIN4-AIN5 */
#define SOC_ADC_ADCCON_CH_AIN6_AIN7 0xB /**< AIN6-AIN7 */
#define SOC_ADC_ADCCON_CH_GND 0xC /**< GND */
#define SOC_ADC_ADCCON_CH_TEMP 0xE /**< Temperature sensor */
#define SOC_ADC_ADCCON_CH_VDD_3 0xF /**< VDD/3 */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_ADC[L:H] register bit masks
* @{
*/
#define SOC_ADC_ADCL_ADC 0x000000FC /**< ADC Result, least significant part */
#define SOC_ADC_ADCH_ADC 0x000000FF /**< ADC Result, most significant part */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_RND[L:H] register bit masks
* @{
*/
#define SOC_ADC_RNDL_RNDL 0x000000FF /**< Random value/seed or CRC result low byte */
#define SOC_ADC_RNDH_RNDH 0x000000FF /**< Random value or CRC result/input data, high byte */
/** @} */
/*---------------------------------------------------------------------------*/
/** \name SOC_ADC_CMPCTL register bit masks
* @{
*/
#define SOC_ADC_CMPCTL_EN 0x00000002 /**< Comparator enable */
#define SOC_ADC_CMPCTL_OUTPUT 0x00000001 /**< Comparator output */
/** @} */
#endif /* SOC_ADC_H_ */
/**
* @}
* @}
*/