71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
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* This file is subject to the terms of the GFX License, v1.0. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://chibios-gfx.com/license.html
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*/
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/**
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* @file drivers/gadc/AT91SAM7/gadc_lld_config.h
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* @brief GADC Driver config file.
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*
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* @addtogroup GADC
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* @{
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*/
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#ifndef GADC_LLD_CONFIG_H
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#define GADC_LLD_CONFIG_H
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#if GFX_USE_GADC
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/*===========================================================================*/
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/* Driver hardware support. */
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/*===========================================================================*/
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/**
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* @brief ChibiOS has a nasty bug in its _adc_isr_full_code() routine (defined in adc.h as a macro).
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* Do we have the version of ChibiOS with this bug.
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* @detail Set to TRUE if ChibiOS has this bug.
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* @note Fixed in ChibiOS 2.4.4stable and 2.5.2unstable (and the repository from 18th Feb 2013)
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* @note This bug prevents us re-calling adcStartConversionI() from with the ISR even though
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* it is clearly designed to handle it. For some reason (on this micro) the high speed timer
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* is not affected only the single sample low speed timer. In that situation we wait until
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* we get back to thread land. This is terrible for the accuracy of the high speed timer
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* but what can we do (other than fix the bug).
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* @note For the AT91SAM7 ADC driver, it post-dates the finding of the bug so we safely
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* say that the bug doesn't exist for this driver.
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*/
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#define ADC_ISR_FULL_CODE_BUG FALSE
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/**
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* @brief The maximum sample frequency supported by this CPU
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*/
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#define GADC_MAX_SAMPLE_FREQUENCY 132000
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/**
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* @brief The number of bits in a sample
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*/
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#define GADC_BITS_PER_SAMPLE AT91_ADC1_RESOLUTION
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/**
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* @brief The sample format
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*/
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#define GADC_SAMPLE_FORMAT ARRAY_DATA_10BITUNSIGNED
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/* Pull in board specific defines */
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#if defined(GADC_USE_CUSTOM_BOARD) && GADC_USE_CUSTOM_BOARD
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/* Include the user supplied board definitions */
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#include "gadc_lld_board.h"
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#elif defined(BOARD_OLIMEX_SAM7_EX256)
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#include "gadc_lld_board_olimexsam7ex256.h"
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#else
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/* Include the user supplied board definitions */
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#include "gadc_lld_board.h"
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#endif
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#endif /* GFX_USE_GADC */
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#endif /* GADC_LLD_CONFIG_H */
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/** @} */
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