mirror of
https://github.com/eddyem/IR-controller.git
synced 2025-12-06 10:45:15 +03:00
100 lines
5.0 KiB
C
100 lines
5.0 KiB
C
/*
|
|
* hardware_ini.c - functions for HW initialisation
|
|
*
|
|
* Copyright 2014 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 "main.h"
|
|
#include "hardware_ini.h"
|
|
|
|
volatile uint16_t ADC_value[8]; // ADC DMA value
|
|
|
|
/**
|
|
* GPIO initialisaion: clocking + ports setup
|
|
*/
|
|
void GPIO_init(){
|
|
rcc_periph_clock_enable(RCC_GPIOC);
|
|
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
|
|
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11|GPIO12); // LED + USB
|
|
// AD7794 addr + en
|
|
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
|
|
GPIO_CNF_OUTPUT_PUSHPULL, ADC_ADDR_MASK | GPIO10); // ADDRESS: PC6..9; EN: PC10
|
|
GPIO_BSRR(GPIOC) = (ADC_ADDR_MASK | GPIO10) << 16; // clear address & disable com
|
|
}
|
|
|
|
void SysTick_init(){
|
|
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8); // Systyck: 72/8=9MHz
|
|
systick_set_reload(8999); // 9000 pulses: 1kHz
|
|
systick_interrupt_enable();
|
|
systick_counter_enable();
|
|
}
|
|
|
|
void ADC_init(){
|
|
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN); // enable clocking
|
|
rcc_periph_clock_enable(RCC_ADC1);
|
|
rcc_set_adcpre(RCC_CFGR_ADCPRE_PCLK2_DIV4);
|
|
rcc_periph_clock_enable(RCC_GPIOB | RCC_GPIOC); // clocking for ADC ports
|
|
gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, 3); // ADC8 - PB0, ADC9 -PB1
|
|
gpio_set_mode(GPIOC, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, 63); // ADC10-15: PC0-PC5
|
|
|
|
// Make sure the ADC doesn't run during config
|
|
adc_off(ADC1);
|
|
|
|
// first configure DMA1 Channel1 (ADC1)
|
|
rcc_periph_clock_enable(RCC_DMA1); // RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
|
|
dma_channel_reset(DMA1, DMA_CHANNEL1); //DMA_DeInit(DMA1_Channel1);
|
|
dma_set_peripheral_address(DMA1, DMA_CHANNEL1, (uint32_t) &(ADC_DR(ADC1))); // DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
|
|
dma_set_memory_address(DMA1, DMA_CHANNEL1, (uint32_t) ADC_value); // DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_value;
|
|
dma_set_number_of_data(DMA1, DMA_CHANNEL1, 8); // DMA_InitStructure.DMA_BufferSize = 1;
|
|
dma_set_read_from_peripheral(DMA1, DMA_CHANNEL1); // DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
|
|
dma_enable_memory_increment_mode(DMA1, DMA_CHANNEL1); // DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
|
|
dma_disable_peripheral_increment_mode(DMA1, DMA_CHANNEL1); // DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
|
dma_set_peripheral_size(DMA1, DMA_CHANNEL1, DMA_CCR_PSIZE_16BIT); // DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
|
|
dma_set_memory_size(DMA1, DMA_CHANNEL1, DMA_CCR_MSIZE_16BIT); // DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
|
|
dma_enable_circular_mode(DMA1, DMA_CHANNEL1); // DMA_InitStructure.DMA_Mode = DMA_Mode_Circular; DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
|
|
dma_set_priority(DMA1, DMA_CHANNEL1, DMA_CCR_PL_HIGH); // DMA_InitStructure.DMA_Priority = DMA_Priority_High;
|
|
dma_enable_channel(DMA1, DMA_CHANNEL1); // DMA_Cmd(DMA1_Channel1, ENABLE);
|
|
|
|
// Configure ADC as continuous scan mode with DMA
|
|
adc_set_dual_mode(ADC_CR1_DUALMOD_IND); // ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
|
|
adc_enable_scan_mode(ADC1); // ADC_InitStructure.ADC_ScanConvMode = ENABLE;
|
|
adc_set_continuous_conversion_mode(ADC1); // ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
|
|
adc_disable_external_trigger_regular(ADC1); // ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
|
|
adc_set_right_aligned(ADC1); // ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
|
|
//adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_239DOT5CYC); // ADC_SampleTime_239Cycles5
|
|
adc_set_sample_time(ADC1, ADC_CHANNEL8, ADC_SMPR_SMP_239DOT5CYC); // ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_239Cycles5);
|
|
adc_enable_dma(ADC1); // ADC_DMACmd(ADC1, ENABLE);
|
|
adc_power_on(ADC1); // ADC_Cmd(ADC1, ENABLE);
|
|
}
|
|
|
|
/**
|
|
* Starts ADC calibration & after it runs ADC in continuous conversion mode
|
|
* First call ADC_init(), than wait a little and call this function
|
|
*/
|
|
void ADC_calibrate_and_start(){
|
|
uint8_t channel_array[16] = {8,9,10,11,12,13,14,15};
|
|
// adc_set_regular_sequence 1 channel -- 0 // ADC_InitStructure.ADC_NbrOfChannel = 1;
|
|
channel_array[0] = ADC_CHANNEL8;
|
|
adc_set_regular_sequence(ADC1, 8, channel_array);
|
|
adc_reset_calibration(ADC1);
|
|
adc_calibration(ADC1);
|
|
adc_start_conversion_regular(ADC1); // ADC_SoftwareStartConvCmd(ADC1, ENABLE);
|
|
adc_start_conversion_direct(ADC1);
|
|
}
|
|
|