adc_common_v1.h

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/** @addtogroup adc_defines
 
@author @htmlonly &copy; @endhtmlonly 2014 Karl Palsson <karlp@tweak.net.au>
 
 */
 
/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2014 Karl Palsson <karlp@tweak.net.au>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */
 
/**@{*/
 
/* THIS FILE SHOULD NOT BE INCLUDED DIRECTLY, BUT ONLY VIA ADC.H
The order of header inclusion is important. adc.h includes the device
specific memorymap.h header before including this header file.*/
 
/** @cond */
#ifdef LIBOPENCM3_ADC_H
/** @endcond */
#ifndef LIBOPENCM3_ADC_COMMON_V1_H
#define LIBOPENCM3_ADC_COMMON_V1_H
 
/* --- Convenience macros -------------------------------------------------- */
 
/* ADC port base addresses (for convenience) */
/****************************************************************************/
/** @defgroup adc_reg_base ADC register base addresses
@ingroup STM32xx_adc_defines
 
@{*/
#define ADC1                            ADC1_BASE
/**@}*/
 
/* --- ADC registers ------------------------------------------------------- */
 
/* ADC status register (ADC_SR) */
#define ADC_SR(block)                   MMIO32((block) + 0x00)
 
/* ADC control register 1 (ADC_CR1) */
#define ADC_CR1(block)                  MMIO32((block) + 0x04)
 
/* ADC control register 2 (ADC_CR2) */
#define ADC_CR2(block)                  MMIO32((block) + 0x08)
 
/* ADC sample time register 1 (ADC_SMPR1) */
#define ADC_SMPR1(block)                MMIO32((block) + 0x0c)
 
/* ADC sample time register 2 (ADC_SMPR2) */
#define ADC_SMPR2(block)                MMIO32((block) + 0x10)
 
#define ADC1_SR                         ADC_SR(ADC1)
#define ADC1_CR1                        ADC_CR1(ADC1)
#define ADC1_CR2                        ADC_CR2(ADC1)
#define ADC1_SMPR1                      ADC_SMPR1(ADC1)
#define ADC1_SMPR2                      ADC_SMPR2(ADC1)
 
#define ADC1_JOFR1                      ADC_JOFR1(ADC1)
#define ADC1_JOFR2                      ADC_JOFR2(ADC1)
#define ADC1_JOFR3                      ADC_JOFR3(ADC1)
#define ADC1_JOFR4                      ADC_JOFR4(ADC1)
 
#define ADC1_HTR                        ADC_HTR(ADC1)
#define ADC1_LTR                        ADC_LTR(ADC1)
 
#define ADC1_SQR1                       ADC_SQR1(ADC1)
#define ADC1_SQR2                       ADC_SQR2(ADC1)
#define ADC1_SQR3                       ADC_SQR3(ADC1)
#define ADC1_JSQR                       ADC_JSQR(ADC1)
 
#define ADC1_JDR1                       ADC_JDR1(ADC1)
#define ADC1_JDR2                       ADC_JDR2(ADC1)
#define ADC1_JDR3                       ADC_JDR3(ADC1)
#define ADC1_JDR4                       ADC_JDR4(ADC1)
#define ADC1_DR                         ADC_DR(ADC1)
 
#if defined(ADC2_BASE)
#define ADC2                            ADC2_BASE
#define ADC2_SR                         ADC_SR(ADC2)
#define ADC2_CR1                        ADC_CR1(ADC2)
#define ADC2_CR2                        ADC_CR2(ADC2)
#define ADC2_SMPR1                      ADC_SMPR1(ADC2)
#define ADC2_SMPR2                      ADC_SMPR2(ADC2)
 
#define ADC2_JOFR1                      ADC_JOFR1(ADC2)
#define ADC2_JOFR2                      ADC_JOFR2(ADC2)
#define ADC2_JOFR3                      ADC_JOFR3(ADC2)
#define ADC2_JOFR4                      ADC_JOFR4(ADC2)
 
/* ADC watchdog high threshold register (ADC_HTR) */
#define ADC2_HTR                        ADC_HTR(ADC2)
/* ADC watchdog low threshold register (ADC_LTR) */
#define ADC2_LTR                        ADC_LTR(ADC2)
 
/* ADC regular sequence register 1 (ADC_SQR1) */
#define ADC2_SQR1                       ADC_SQR1(ADC2)
/* ADC regular sequence register 2 (ADC_SQR2) */
#define ADC2_SQR2                       ADC_SQR2(ADC2)
/* ADC regular sequence register 3 (ADC_SQR3) */
#define ADC2_SQR3                       ADC_SQR3(ADC2)
/* ADC injected sequence register (ADC_JSQR) */
#define ADC2_JSQR                       ADC_JSQR(ADC2)
 
/* ADC injected data register x (ADC_JDRx) (x=1..4) */
#define ADC2_JDR1                       ADC_JDR1(ADC2)
#define ADC2_JDR2                       ADC_JDR2(ADC2)
#define ADC2_JDR3                       ADC_JDR3(ADC2)
#define ADC2_JDR4                       ADC_JDR4(ADC2)
/* ADC regular data register (ADC_DR) */
#define ADC2_DR                         ADC_DR(ADC2)
#endif
 
#if defined(ADC3_BASE)
#define ADC3                            ADC3_BASE
#define ADC3_SR                         ADC_SR(ADC3)
#define ADC3_CR1                        ADC_CR1(ADC3)
#define ADC3_CR2                        ADC_CR2(ADC3)
#define ADC3_SMPR1                      ADC_SMPR1(ADC3)
#define ADC3_SMPR2                      ADC_SMPR2(ADC3)
 
#define ADC3_JOFR1                      ADC_JOFR1(ADC3)
#define ADC3_JOFR2                      ADC_JOFR2(ADC3)
#define ADC3_JOFR3                      ADC_JOFR3(ADC3)
#define ADC3_JOFR4                      ADC_JOFR4(ADC3)
 
#define ADC3_HTR                        ADC_HTR(ADC3)
#define ADC3_LTR                        ADC_LTR(ADC3)
 
#define ADC3_SQR1                       ADC_SQR1(ADC3)
#define ADC3_SQR2                       ADC_SQR2(ADC3)
#define ADC3_SQR3                       ADC_SQR3(ADC3)
#define ADC3_JSQR                       ADC_JSQR(ADC3)
 
#define ADC3_JDR1                       ADC_JDR1(ADC3)
#define ADC3_JDR2                       ADC_JDR2(ADC3)
#define ADC3_JDR3                       ADC_JDR3(ADC3)
#define ADC3_JDR4                       ADC_JDR4(ADC3)
#define ADC3_DR                         ADC_DR(ADC3)
#endif
 
 
 
/* --- ADC Channels ------------------------------------------------------- */
 
/****************************************************************************/
/** @defgroup adc_channel ADC Channel Numbers
@ingroup STM32xx_adc_defines
 
@{*/
#define ADC_CHANNEL0            0x00
#define ADC_CHANNEL1            0x01
#define ADC_CHANNEL2            0x02
#define ADC_CHANNEL3            0x03
#define ADC_CHANNEL4            0x04
#define ADC_CHANNEL5            0x05
#define ADC_CHANNEL6            0x06
#define ADC_CHANNEL7            0x07
#define ADC_CHANNEL8            0x08
#define ADC_CHANNEL9            0x09
#define ADC_CHANNEL10           0x0A
#define ADC_CHANNEL11           0x0B
#define ADC_CHANNEL12           0x0C
#define ADC_CHANNEL13           0x0D
#define ADC_CHANNEL14           0x0E
#define ADC_CHANNEL15           0x0F
#define ADC_CHANNEL16           0x10
#define ADC_CHANNEL17           0x11
#define ADC_CHANNEL18           0x12
/**@}*/
#define ADC_CHANNEL_MASK        0x1F
 
 
/* --- ADC_SR values ------------------------------------------------------- */
/****************************************************************************/
/** @defgroup adc_sr_values ADC Status Register Flags
@ingroup STM32xx_adc_defines
 
@{*/
 
/* STRT:*//** Regular channel Start flag */
#define ADC_SR_STRT                     (1 << 4)
 
/* JSTRT:*//** Injected channel Start flag */
#define ADC_SR_JSTRT                    (1 << 3)
 
/* JEOC:*//** Injected channel end of conversion */
#define ADC_SR_JEOC                     (1 << 2)
 
/* EOC:*//** End of conversion */
#define ADC_SR_EOC                      (1 << 1)
 
/* AWD:*//** Analog watchdog flag */
#define ADC_SR_AWD                      (1 << 0)
/**@}*/
 
/* --- ADC_CR1 values ------------------------------------------------------ */
 
/* AWDEN: Analog watchdog enable on regular channels */
#define ADC_CR1_AWDEN                   (1 << 23)
 
/* JAWDEN: Analog watchdog enable on injected channels */
#define ADC_CR1_JAWDEN                  (1 << 22)
 
/* Note: Bits [21:20] are reserved, and must be kept at reset value. */
 
 
/* DISCNUM[2:0]: Discontinuous mode channel count. */
/****************************************************************************/
/** @defgroup adc_cr1_discnum ADC Number of channels in discontinuous mode.
@ingroup STM32_adc_defines
 
@{*/
#define ADC_CR1_DISCNUM_1CHANNELS       (0x0 << 13)
#define ADC_CR1_DISCNUM_2CHANNELS       (0x1 << 13)
#define ADC_CR1_DISCNUM_3CHANNELS       (0x2 << 13)
#define ADC_CR1_DISCNUM_4CHANNELS       (0x3 << 13)
#define ADC_CR1_DISCNUM_5CHANNELS       (0x4 << 13)
#define ADC_CR1_DISCNUM_6CHANNELS       (0x5 << 13)
#define ADC_CR1_DISCNUM_7CHANNELS       (0x6 << 13)
#define ADC_CR1_DISCNUM_8CHANNELS       (0x7 << 13)
/**@}*/
#define ADC_CR1_DISCNUM_MASK            (0x7 << 13)
#define ADC_CR1_DISCNUM_SHIFT           13
 
/* JDISCEN: */ /** Discontinuous mode on injected channels. */
#define ADC_CR1_JDISCEN                 (1 << 12)
 
/* DISCEN: */ /** Discontinuous mode on regular channels. */
#define ADC_CR1_DISCEN                  (1 << 11)
 
/* JAUTO: */ /** Automatic Injection Group conversion. */
#define ADC_CR1_JAUTO                   (1 << 10)
 
/* AWDSGL: */ /** Enable the watchdog on a single channel in scan mode. */
#define ADC_CR1_AWDSGL                  (1 << 9)
 
/* SCAN: */ /** Scan mode. */
#define ADC_CR1_SCAN                    (1 << 8)
 
/* JEOCIE: */ /** Interrupt enable for injected channels. */
#define ADC_CR1_JEOCIE                  (1 << 7)
 
/* AWDIE: */ /** Analog watchdog interrupt enable. */
#define ADC_CR1_AWDIE                   (1 << 6)
 
/* EOCIE: */ /** Interrupt enable EOC. */
#define ADC_CR1_EOCIE                   (1 << 5)
 
/* AWDCH[4:0]: Analog watchdog channel bits. (Up to 17 other values reserved) */
/* Notes: Depending on part, and ADC peripheral, some channels are connected
 * to V_SS, or to temperature/reference/battery inputs
 */
/****************************************************************************/
/* ADC_CR1 AWDCH[4:0] ADC watchdog channel */
/** @defgroup adc_watchdog_channel ADC watchdog channel
@ingroup STM32xx_adc_defines
 
@{*/
#define ADC_CR1_AWDCH_CHANNEL0          (0x00 << 0)
#define ADC_CR1_AWDCH_CHANNEL1          (0x01 << 0)
#define ADC_CR1_AWDCH_CHANNEL2          (0x02 << 0)
#define ADC_CR1_AWDCH_CHANNEL3          (0x03 << 0)
#define ADC_CR1_AWDCH_CHANNEL4          (0x04 << 0)
#define ADC_CR1_AWDCH_CHANNEL5          (0x05 << 0)
#define ADC_CR1_AWDCH_CHANNEL6          (0x06 << 0)
#define ADC_CR1_AWDCH_CHANNEL7          (0x07 << 0)
#define ADC_CR1_AWDCH_CHANNEL8          (0x08 << 0)
#define ADC_CR1_AWDCH_CHANNEL9          (0x09 << 0)
#define ADC_CR1_AWDCH_CHANNEL10         (0x0A << 0)
#define ADC_CR1_AWDCH_CHANNEL11         (0x0B << 0)
#define ADC_CR1_AWDCH_CHANNEL12         (0x0C << 0)
#define ADC_CR1_AWDCH_CHANNEL13         (0x0D << 0)
#define ADC_CR1_AWDCH_CHANNEL14         (0x0E << 0)
#define ADC_CR1_AWDCH_CHANNEL15         (0x0F << 0)
#define ADC_CR1_AWDCH_CHANNEL16         (0x10 << 0)
#define ADC_CR1_AWDCH_CHANNEL17         (0x11 << 0)
/**@}*/
#define ADC_CR1_AWDCH_MASK              (0x1F << 0)
#define ADC_CR1_AWDCH_SHIFT             0
 
/* --- ADC_CR2 values ------------------------------------------------------ */
 
/* ALIGN: Data alignement. */
#define ADC_CR2_ALIGN_RIGHT             (0 << 11)
#define ADC_CR2_ALIGN_LEFT              (1 << 11)
#define ADC_CR2_ALIGN                   (1 << 11)
 
/* DMA: Direct memory access mode. (ADC1 and ADC3 only!) */
#define ADC_CR2_DMA                     (1 << 8)
 
/* CONT: Continuous conversion. */
#define ADC_CR2_CONT                    (1 << 1)
 
/* ADON: A/D converter On/Off. */
/* Note: If any other bit in this register apart from ADON is changed at the
 * same time, then conversion is not triggered. This is to prevent triggering
 * an erroneous conversion.
 * Conclusion: Must be separately written.
 */
#define ADC_CR2_ADON                    (1 << 0)
 
/* --- ADC_JOFRx, ADC_HTR, ADC_LTR values ---------------------------------- */
 
#define ADC_JOFFSET_LSB                 0
#define ADC_JOFFSET_MSK                 0xfff
#define ADC_HT_LSB                      0
#define ADC_HT_MSK                      0xfff
#define ADC_LT_LSB                      0
#define ADC_LT_MSK                      0xfff
 
/* --- ADC_SQR1 values ----------------------------------------------------- */
/* The sequence length field is always in the same place, but sized
 * differently on various parts */
#define ADC_SQR1_L_LSB                  20
 
/* --- ADC_JSQR values ----------------------------------------------------- */
#define ADC_JSQR_JL_LSB                 20
#define ADC_JSQR_JSQ4_LSB               15
#define ADC_JSQR_JSQ3_LSB               10
#define ADC_JSQR_JSQ2_LSB               5
#define ADC_JSQR_JSQ1_LSB               0
 
/* JL[2:0]: Discontinous mode channel count injected channels. */
/****************************************************************************/
/** @defgroup adc_jsqr_jl ADC Number of channels in discontinuous injected mode
@ingroup STM32xx_adc_defines
 
@{*/
#define ADC_JSQR_JL_1CHANNELS       (0x0 << ADC_JSQR_JL_LSB)
#define ADC_JSQR_JL_2CHANNELS       (0x1 << ADC_JSQR_JL_LSB)
#define ADC_JSQR_JL_3CHANNELS       (0x2 << ADC_JSQR_JL_LSB)
#define ADC_JSQR_JL_4CHANNELS       (0x3 << ADC_JSQR_JL_LSB)
/**@}*/
#define ADC_JSQR_JL_MSK                 (0x2 << ADC_JSQR_JL_LSB)
#define ADC_JSQR_JSQ4_MSK               (0x1f << ADC_JSQR_JSQ4_LSB)
#define ADC_JSQR_JSQ3_MSK               (0x1f << ADC_JSQR_JSQ3_LSB)
#define ADC_JSQR_JSQ2_MSK               (0x1f << ADC_JSQR_JSQ2_LSB)
#define ADC_JSQR_JSQ1_MSK               (0x1f << ADC_JSQR_JSQ1_LSB)
 
#define ADC_JSQR_JSQ_VAL(n, val)        ((val) << (((n) - 1) * 5))
#define ADC_JSQR_JL_VAL(val)            (((val) - 1) << ADC_JSQR_JL_LSB)
 
#if (defined(THESE_HAVE_BAD_NAMES_PROBABLY) && (THESE_HAVE_BAD_NAMES_PROBABLY))
/* --- ADC_JDRx, ADC_DR values --------------------------------------------- */
 
#define ADC_JDATA_LSB                   0
#define ADC_DATA_LSB                    0
#define ADC_ADC2DATA_LSB                16 /* ADC1 only (dual mode) */
#define ADC_JDATA_MSK                   (0xffff << ADC_JDATA_LSB)
#define ADC_DATA_MSK                    (0xffff << ADC_DA)
#define ADC_ADC2DATA_MSK                (0xffff << ADC_ADC2DATA_LSB)
/* ADC1 only (dual mode) */
#endif
 
 
/* --- Function prototypes ------------------------------------------------- */
 
BEGIN_DECLS
 
void adc_power_on(uint32_t adc);
void adc_power_off(uint32_t adc);
void adc_enable_analog_watchdog_regular(uint32_t adc);
void adc_disable_analog_watchdog_regular(uint32_t adc);
void adc_enable_analog_watchdog_injected(uint32_t adc);
void adc_disable_analog_watchdog_injected(uint32_t adc);
void adc_enable_discontinuous_mode_regular(uint32_t adc, uint8_t length);
void adc_disable_discontinuous_mode_regular(uint32_t adc);
void adc_enable_discontinuous_mode_injected(uint32_t adc);
void adc_disable_discontinuous_mode_injected(uint32_t adc);
void adc_enable_automatic_injected_group_conversion(uint32_t adc);
void adc_disable_automatic_injected_group_conversion(uint32_t adc);
void adc_enable_analog_watchdog_on_all_channels(uint32_t adc);
void adc_enable_analog_watchdog_on_selected_channel(uint32_t adc,
                                                    uint8_t channel);
void adc_enable_scan_mode(uint32_t adc);
void adc_disable_scan_mode(uint32_t adc);
void adc_enable_eoc_interrupt_injected(uint32_t adc);
void adc_disable_eoc_interrupt_injected(uint32_t adc);
void adc_enable_awd_interrupt(uint32_t adc);
void adc_disable_awd_interrupt(uint32_t adc);
void adc_enable_eoc_interrupt(uint32_t adc);
void adc_disable_eoc_interrupt(uint32_t adc);
void adc_set_left_aligned(uint32_t adc);
void adc_set_right_aligned(uint32_t adc);
bool adc_eoc(uint32_t adc);
bool adc_eoc_injected(uint32_t adc);
uint32_t adc_read_regular(uint32_t adc);
uint32_t adc_read_injected(uint32_t adc, uint8_t reg);
void adc_set_continuous_conversion_mode(uint32_t adc);
void adc_set_single_conversion_mode(uint32_t adc);
void adc_set_regular_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_sequence(uint32_t adc, uint8_t length, uint8_t channel[]);
void adc_set_injected_offset(uint32_t adc, uint8_t reg, uint32_t offset);
void adc_set_watchdog_high_threshold(uint32_t adc, uint16_t threshold);
void adc_set_watchdog_low_threshold(uint32_t adc, uint16_t threshold);
void adc_start_conversion_regular(uint32_t adc);
void adc_start_conversion_injected(uint32_t adc);
void adc_enable_dma(uint32_t adc);
void adc_disable_dma(uint32_t adc);
bool adc_get_flag(uint32_t adc, uint32_t flag);
void adc_clear_flag(uint32_t adc, uint32_t flag);
 
/* common methods that have slight differences */
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time);
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time);
void adc_disable_external_trigger_regular(uint32_t adc);
void adc_disable_external_trigger_injected(uint32_t adc);
 
END_DECLS
 
#endif
/** @cond */
#endif
/** @endcond */
/**@}*/