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restructuring

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This commit is contained in:
Edward Emelianov
2022-03-10 11:04:14 +03:00
parent 29560b7c0c
commit 733dbd75d2
1758 changed files with 14 additions and 26855 deletions
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62
deprecated/F1/Timelapse_keyboard_only_lasers/adc.c Normal file
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/*
* adc.c - functions for Sharp 2Y0A02 distance meter & photosensor
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "adc.h"
#include "main.h"
#include "usbkeybrd.h"
uint16_t ADC_value; // Value of ADC
uint16_t ADC_trig_val; // -//- at trigger time
void init_adc_sensor(){
// we will use ADC1 channel 0 for IR sensor & ADC1 channel 1 for laser's photoresistor
// Make sure the ADC doesn't run during config
adc_off(ADC1);
// enable ADC & PA0/PA1 clocking
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN | RCC_APB2ENR_IOPAEN);
rcc_set_adcpre(RCC_CFGR_ADCPRE_PCLK2_DIV4);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, GPIO6);
rcc_periph_clock_enable(RCC_DMA1); // enable DMA for ADC values storing
// Configure ADC as continuous scan mode with DMA
ADC1_CR1 = ADC_CR1_SCAN; // enable scan mode
// set sample time on channels 1&2: 239.5 cycles for better results
ADC1_SMPR2 = 0x3f;
dma_channel_reset(DMA1, DMA_CHANNEL1);
DMA1_CPAR1 = (uint32_t) &(ADC_DR(ADC1));
DMA1_CMAR1 = (uint32_t) &ADC_value;
DMA1_CNDTR1 = 1;
DMA1_CCR1 = DMA_CCR_MINC | DMA_CCR_PSIZE_16BIT | DMA_CCR_MSIZE_16BIT
| DMA_CCR_CIRC | DMA_CCR_PL_HIGH | DMA_CCR_EN;
// continuous conv, enable ADC & DMA
ADC1_CR2 = ADC_CR2_CONT | ADC_CR2_ADON | ADC_CR2_DMA;
// set channels
uint8_t adc_channel_array = ADC_POWER_CHANNEL;
adc_set_regular_sequence(ADC1, 1, &adc_channel_array);
// reset calibration registers & start calibration
ADC1_CR2 |= ADC_CR2_RSTCAL;
while(ADC1_CR2 & ADC_CR2_RSTCAL); // wait for registers reset
ADC1_CR2 |= ADC_CR2_CAL;
while(ADC1_CR2 & ADC_CR2_CAL); // wait for calibration ends
nvic_enable_irq(NVIC_ADC1_2_IRQ);
ADC1_CR2 |= ADC_CR2_SWSTART;
// turn on ADC - to do it we need set ADC_CR2_ADON again!
ADC1_CR2 |= ADC_CR2_ADON;
}