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/******************************************************************************
* The MIT License
*
* Copyright (c) 2012 LeafLabs, LLC.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/**
* @file libmaple/stm32f2/adc.c
* @brief STM32F2 ADC.
*/
#include <libmaple/adc.h>
#include <libmaple/gpio.h>
/*
* Devices
*/
static adc_dev adc1 = {
.regs = ADC1_BASE,
.clk_id = RCC_ADC1,
};
/** ADC1 device. */
const adc_dev *ADC1 = &adc1;
static adc_dev adc2 = {
.regs = ADC2_BASE,
.clk_id = RCC_ADC2,
};
/** ADC2 device. */
const adc_dev *ADC2 = &adc2;
static adc_dev adc3 = {
.regs = ADC3_BASE,
.clk_id = RCC_ADC3,
};
/** ADC3 device. */
const adc_dev *ADC3 = &adc3;
/*
* Common routines
*/
void adc_set_prescaler(adc_prescaler pre) {
uint32 ccr = ADC_COMMON_BASE->CCR;
ccr &= ~ADC_CCR_ADCPRE;
ccr |= (uint32)pre;
ADC_COMMON_BASE->CCR = ccr;
}
void adc_foreach(void (*fn)(const adc_dev*)) {
fn(ADC1);
fn(ADC2);
fn(ADC3);
}
void adc_config_gpio(const adc_dev *ignored, gpio_dev *gdev, uint8 bit) {
gpio_set_modef(gdev, bit, GPIO_MODE_ANALOG, GPIO_MODEF_PUPD_NONE);
}
void adc_enable_single_swstart(const adc_dev *dev) {
adc_init(dev);
adc_enable(dev);
}
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