198 lines
6.7 KiB
C
198 lines
6.7 KiB
C
/*
|
|
* This file is part of Cleanflight.
|
|
*
|
|
* Cleanflight 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Cleanflight 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 Cleanflight. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
#include "platform.h"
|
|
|
|
#include "drivers/accgyro/accgyro.h"
|
|
#include "drivers/system.h"
|
|
|
|
#include "drivers/io.h"
|
|
#include "io_impl.h"
|
|
#include "rcc.h"
|
|
#include "dma.h"
|
|
|
|
#include "drivers/sensor.h"
|
|
|
|
#include "adc.h"
|
|
#include "adc_impl.h"
|
|
|
|
#ifndef ADC_INSTANCE
|
|
#define ADC_INSTANCE ADC1
|
|
#endif
|
|
|
|
#ifndef ADC1_DMA_STREAM
|
|
#define ADC1_DMA_STREAM DMA2_Stream4
|
|
#endif
|
|
|
|
const adcDevice_t adcHardware[] = {
|
|
{ .ADCx = ADC1, .rccADC = RCC_APB2(ADC1), .DMAy_Streamx = ADC1_DMA_STREAM, .channel = DMA_Channel_0 },
|
|
//{ .ADCx = ADC2, .rccADC = RCC_APB2(ADC2), .DMAy_Streamx = DMA2_Stream1, .channel = DMA_Channel_0 }
|
|
};
|
|
|
|
/* note these could be packed up for saving space */
|
|
const adcTagMap_t adcTagMap[] = {
|
|
/*
|
|
{ DEFIO_TAG_E__PF3, ADC_Channel_9 },
|
|
{ DEFIO_TAG_E__PF4, ADC_Channel_14 },
|
|
{ DEFIO_TAG_E__PF5, ADC_Channel_15 },
|
|
{ DEFIO_TAG_E__PF6, ADC_Channel_4 },
|
|
{ DEFIO_TAG_E__PF7, ADC_Channel_5 },
|
|
{ DEFIO_TAG_E__PF8, ADC_Channel_6 },
|
|
{ DEFIO_TAG_E__PF9, ADC_Channel_7 },
|
|
{ DEFIO_TAG_E__PF10, ADC_Channel_8 },
|
|
*/
|
|
{ DEFIO_TAG_E__PC0, ADC_Channel_10 },
|
|
{ DEFIO_TAG_E__PC1, ADC_Channel_11 },
|
|
{ DEFIO_TAG_E__PC2, ADC_Channel_12 },
|
|
{ DEFIO_TAG_E__PC3, ADC_Channel_13 },
|
|
{ DEFIO_TAG_E__PC4, ADC_Channel_14 },
|
|
{ DEFIO_TAG_E__PC5, ADC_Channel_15 },
|
|
{ DEFIO_TAG_E__PB0, ADC_Channel_8 },
|
|
{ DEFIO_TAG_E__PB1, ADC_Channel_9 },
|
|
{ DEFIO_TAG_E__PA0, ADC_Channel_0 },
|
|
{ DEFIO_TAG_E__PA1, ADC_Channel_1 },
|
|
{ DEFIO_TAG_E__PA2, ADC_Channel_2 },
|
|
{ DEFIO_TAG_E__PA3, ADC_Channel_3 },
|
|
{ DEFIO_TAG_E__PA4, ADC_Channel_4 },
|
|
{ DEFIO_TAG_E__PA5, ADC_Channel_5 },
|
|
{ DEFIO_TAG_E__PA6, ADC_Channel_6 },
|
|
{ DEFIO_TAG_E__PA7, ADC_Channel_7 },
|
|
};
|
|
|
|
ADCDevice adcDeviceByInstance(ADC_TypeDef *instance)
|
|
{
|
|
if (instance == ADC1)
|
|
return ADCDEV_1;
|
|
/*
|
|
if (instance == ADC2) // TODO add ADC2 and 3
|
|
return ADCDEV_2;
|
|
*/
|
|
return ADCINVALID;
|
|
}
|
|
|
|
void adcInit(const adcConfig_t *config)
|
|
{
|
|
ADC_InitTypeDef ADC_InitStructure;
|
|
DMA_InitTypeDef DMA_InitStructure;
|
|
|
|
uint8_t i;
|
|
uint8_t configuredAdcChannels = 0;
|
|
|
|
memset(&adcOperatingConfig, 0, sizeof(adcOperatingConfig));
|
|
|
|
if (config->vbat.enabled) {
|
|
adcOperatingConfig[ADC_BATTERY].tag = config->vbat.ioTag;
|
|
}
|
|
|
|
if (config->rssi.enabled) {
|
|
adcOperatingConfig[ADC_RSSI].tag = config->rssi.ioTag; //RSSI_ADC_CHANNEL;
|
|
}
|
|
|
|
if (config->external1.enabled) {
|
|
adcOperatingConfig[ADC_EXTERNAL1].tag = config->external1.ioTag; //EXTERNAL1_ADC_CHANNEL;
|
|
}
|
|
|
|
if (config->current.enabled) {
|
|
adcOperatingConfig[ADC_CURRENT].tag = config->current.ioTag; //CURRENT_METER_ADC_CHANNEL;
|
|
}
|
|
|
|
ADCDevice device = adcDeviceByInstance(ADC_INSTANCE);
|
|
if (device == ADCINVALID)
|
|
return;
|
|
|
|
adcDevice_t adc = adcHardware[device];
|
|
|
|
bool adcActive = false;
|
|
for (int i = 0; i < ADC_CHANNEL_COUNT; i++) {
|
|
if (!adcOperatingConfig[i].tag)
|
|
continue;
|
|
|
|
adcActive = true;
|
|
IOInit(IOGetByTag(adcOperatingConfig[i].tag), OWNER_ADC_BATT + i, 0);
|
|
IOConfigGPIO(IOGetByTag(adcOperatingConfig[i].tag), IO_CONFIG(GPIO_Mode_AN, 0, GPIO_OType_OD, GPIO_PuPd_NOPULL));
|
|
adcOperatingConfig[i].adcChannel = adcChannelByTag(adcOperatingConfig[i].tag);
|
|
adcOperatingConfig[i].dmaIndex = configuredAdcChannels++;
|
|
adcOperatingConfig[i].sampleTime = ADC_SampleTime_480Cycles;
|
|
adcOperatingConfig[i].enabled = true;
|
|
}
|
|
|
|
if (!adcActive) {
|
|
return;
|
|
}
|
|
|
|
RCC_ClockCmd(adc.rccADC, ENABLE);
|
|
|
|
dmaInit(dmaGetIdentifier(adc.DMAy_Streamx), OWNER_ADC, 0);
|
|
|
|
DMA_DeInit(adc.DMAy_Streamx);
|
|
|
|
DMA_StructInit(&DMA_InitStructure);
|
|
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&adc.ADCx->DR;
|
|
DMA_InitStructure.DMA_Channel = adc.channel;
|
|
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)adcValues;
|
|
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
|
|
DMA_InitStructure.DMA_BufferSize = configuredAdcChannels;
|
|
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
|
DMA_InitStructure.DMA_MemoryInc = configuredAdcChannels > 1 ? DMA_MemoryInc_Enable : DMA_MemoryInc_Disable;
|
|
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
|
|
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
|
|
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
|
|
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
|
|
DMA_Init(adc.DMAy_Streamx, &DMA_InitStructure);
|
|
|
|
DMA_Cmd(adc.DMAy_Streamx, ENABLE);
|
|
|
|
ADC_CommonInitTypeDef ADC_CommonInitStructure;
|
|
|
|
ADC_CommonStructInit(&ADC_CommonInitStructure);
|
|
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
|
|
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div8;
|
|
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
|
|
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
|
|
ADC_CommonInit(&ADC_CommonInitStructure);
|
|
|
|
ADC_StructInit(&ADC_InitStructure);
|
|
|
|
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
|
|
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
|
|
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
|
|
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
|
|
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
|
|
ADC_InitStructure.ADC_NbrOfConversion = configuredAdcChannels;
|
|
ADC_InitStructure.ADC_ScanConvMode = configuredAdcChannels > 1 ? ENABLE : DISABLE; // 1=scan more that one channel in group
|
|
|
|
ADC_Init(adc.ADCx, &ADC_InitStructure);
|
|
|
|
uint8_t rank = 1;
|
|
for (i = 0; i < ADC_CHANNEL_COUNT; i++) {
|
|
if (!adcOperatingConfig[i].enabled) {
|
|
continue;
|
|
}
|
|
ADC_RegularChannelConfig(adc.ADCx, adcOperatingConfig[i].adcChannel, rank++, adcOperatingConfig[i].sampleTime);
|
|
}
|
|
ADC_DMARequestAfterLastTransferCmd(adc.ADCx, ENABLE);
|
|
|
|
ADC_DMACmd(adc.ADCx, ENABLE);
|
|
ADC_Cmd(adc.ADCx, ENABLE);
|
|
|
|
ADC_SoftwareStartConv(adc.ADCx);
|
|
}
|