Arti Zirk
054740c5de
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/** @addtogroup adc_file ADC peripheral API
|
|
@ingroup peripheral_apis
|
|
|
|
@author @htmlonly © @endhtmlonly 2012
|
|
Ken Sarkies <ksarkies@internode.on.net>
|
|
|
|
@date 30 August 2012
|
|
|
|
LGPL License Terms @ref lgpl_license
|
|
*/
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2012 Ken Sarkies <ksarkies@internode.on.net>
|
|
*
|
|
* 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/stm32/adc.h>
|
|
|
|
/**@{*/
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief ADC Set the Sample Time for a Single Channel
|
|
|
|
The sampling time can be selected in ADC clock cycles from 1.5 to 239.5.
|
|
|
|
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
|
|
@param[in] channel Unsigned int8. ADC Channel integer 0..18 or from @ref
|
|
adc_channel
|
|
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg
|
|
* NOTE Common with f1, f2 and f37x
|
|
*/
|
|
void adc_set_sample_time(uint32_t adc, uint8_t channel, uint8_t time)
|
|
{
|
|
uint32_t reg32;
|
|
|
|
if (channel < 10) {
|
|
reg32 = ADC_SMPR2(adc);
|
|
reg32 &= ~(0x7 << (channel * 3));
|
|
reg32 |= (time << (channel * 3));
|
|
ADC_SMPR2(adc) = reg32;
|
|
} else {
|
|
reg32 = ADC_SMPR1(adc);
|
|
reg32 &= ~(0x7 << ((channel - 10) * 3));
|
|
reg32 |= (time << ((channel - 10) * 3));
|
|
ADC_SMPR1(adc) = reg32;
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief ADC Set the Sample Time for All Channels
|
|
|
|
The sampling time can be selected in ADC clock cycles from 1.5 to 239.5, same
|
|
for all channels.
|
|
|
|
@param[in] adc Unsigned int32. ADC block register address base @ref adc_reg_base
|
|
@param[in] time Unsigned int8. Sampling time selection from @ref adc_sample_rg
|
|
* NOTE Common with f1, f2 and f37x
|
|
*/
|
|
void adc_set_sample_time_on_all_channels(uint32_t adc, uint8_t time)
|
|
{
|
|
uint8_t i;
|
|
uint32_t reg32 = 0;
|
|
|
|
for (i = 0; i <= 9; i++) {
|
|
reg32 |= (time << (i * 3));
|
|
}
|
|
ADC_SMPR2(adc) = reg32;
|
|
|
|
for (i = 10; i <= 17; i++) {
|
|
reg32 |= (time << ((i - 10) * 3));
|
|
}
|
|
ADC_SMPR1(adc) = reg32;
|
|
}
|
|
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief ADC Set Dual/Triple Mode
|
|
|
|
The multiple mode uses ADC1 as master, ADC2 and optionally ADC3 in a slave
|
|
arrangement. This setting is applied to ADC1 only.
|
|
|
|
The various modes possible are described in the reference manual.
|
|
|
|
@param[in] mode Unsigned int32. Multiple mode selection from @ref adc_multi_mode
|
|
*/
|
|
void adc_set_multi_mode(uint32_t mode)
|
|
{
|
|
ADC_CCR |= mode;
|
|
}
|
|
|
|
|
|
/** Enable The VBat Sensor.
|
|
* This enables the battery voltage measurements on ADC1 channel 18. On
|
|
* STM32F42x and STM32F43x, this must be disabled when the temperature sensor
|
|
* is enabled. If both are enabled, only the VBat conversion is performed.
|
|
*/
|
|
void adc_enable_vbat_sensor(void)
|
|
{
|
|
ADC_CCR |= ADC_CCR_VBATE;
|
|
}
|
|
|
|
/** Disable The VBat Sensor.
|
|
* Disabling this will reduce power consumption from the battery voltage
|
|
* measurement.
|
|
*/
|
|
void adc_disable_vbat_sensor(void)
|
|
{
|
|
ADC_CCR &= ~ADC_CCR_VBATE;
|
|
}
|
|
|
|
/**@}*/ |