lora-car/libopencm3/lib/efm32/common/dac_common.c

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/** @addtogroup dac_file DAC peripheral API
* @ingroup peripheral_apis
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2015 Kuldeep Singh Dhaka <kuldeepdhaka9@gmail.com>
*
* 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/>.
*/
#include <libopencm3/efm32/dac.h>
/**@{*/
/**
* Set DAC refresh cycle
* @param[in] dac DAC (use DACx)
* @param[in] refrsel (use DAC_CTRL_REFRSEL_*CYCLES)
* @see dac_disable_auto_refresh()
* @see dac_enable_auto_refresh()
*/
void dac_set_refresh_cycle(uint32_t dac, uint32_t refrsel)
{
DAC_CTRL(dac) = (DAC_CTRL(dac) & ~DAC_CTRL_REFRSEL_MASK) | refrsel;
}
/**
* Set DAC clock prescaler
* @param[in] dac DAC (use DACx)
* @param[in] presc Prescaler (use DAC_CTRL_PRESC_*)
*/
void dac_set_clock_prescaler(uint32_t dac, uint32_t presc)
{
DAC_CTRL(dac) = (DAC_CTRL(dac) & ~DAC_CTRL_PRESC_MASK) | presc;
}
/**
* Set DAC reference
* @param[in] dac DAC (use DACx)
* @param[in] refsel Reference (DAC_CTRL_REFSEL_*)
*/
void dac_set_reference(uint32_t dac, uint32_t refsel)
{
DAC_CTRL(dac) = (DAC_CTRL(dac) & ~DAC_CTRL_REFSEL_MASK) | refsel;
}
/**
* Set DAC output mode
* @param[in] dac DAC (use DACx)
* @param[in] outmode Output mode (DAC_CTRL_OUTMODE_*)
*/
void dac_set_out_mode(uint32_t dac, uint32_t outmode)
{
DAC_CTRL(dac) = (DAC_CTRL(dac) & ~DAC_CTRL_OUTMODE_MASK) | outmode;
}
/**
* Set conversion mode
* @param[in] dac DAC (use DACx)
* @param[in] convmode Conversion mode (use DAC_CTRL_CONVMODE_*)
*/
void dac_set_conversion_mode(uint32_t dac, uint32_t convmode)
{
DAC_CTRL(dac) = (DAC_CTRL(dac) & ~DAC_CTRL_CONVMODE_MASK) | convmode;
}
/**
* Enable Sine wave on output
* @param[in] dac DAC (use DACx)
*/
void dac_enable_sine(uint32_t dac)
{
DAC_CTRL(dac) |= DAC_CTRL_SINMODE;
}
/**
* Disable Sine wave on output
* @param[in] dac DAC (use DACx)
*/
void dac_disable_sine(uint32_t dac)
{
DAC_CTRL(dac) &= ~DAC_CTRL_SINMODE;
}
/**
* Set PRS trigger source on DAC channel
* @param[in] dac DAC (use DACx)
* @param[in] dac_chan DAC Channel (use DAC_CHx)
* @param[in] prs_chan PRS Channel (use PRS_CHx)
*/
void dac_set_prs_trigger(uint32_t dac, enum dac_ch dac_chan,
enum prs_ch prs_chan)
{
uint32_t ch_ctrl = DAC_CHx_CTRL(dac, dac_chan);
ch_ctrl &= DAC_CH_CTRL_PRSSEL_MASK;
ch_ctrl |= DAC_CH_CTRL_PRSSEL(prs_chan);
DAC_CHx_CTRL(dac, dac_chan) = ch_ctrl;
}
/**
* Enable PRS triggerring
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_enable_prs_trigger(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) |= DAC_CH_CTRL_PRSEN;
}
/**
* Disable PRS triggerring
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_disable_prs_trigger(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) &= ~DAC_CH_CTRL_PRSEN;
}
/**
* Enable auto refresh
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_enable_auto_refresh(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) |= DAC_CH_CTRL_REFREN;
}
/**
* Disable auto refresh
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_disable_auto_refresh(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) &= ~DAC_CH_CTRL_REFREN;
}
/**
* Enable channel
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_enable_channel(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) |= DAC_CH_CTRL_EN;
}
/**
* Disable channel
* @param[in] dac DAC (use DACx)
* @param[in] ch DAC Channel (use DAC_CHx)
*/
void dac_disable_channel(uint32_t dac, enum dac_ch ch)
{
DAC_CHx_CTRL(dac, ch) &= ~DAC_CH_CTRL_REFREN;
}
/**@}*/