ADC driver. More...

#include "mcu_periph/adc.h"
#include "mcu_periph/gpio.h"
#include "hal.h"
#include "std.h"
#include "mcu_periph/ram_arch.h"

Include dependency graph for adc_arch.c:

Go to the source code of this file.

Macros
#define	USE_AD1 1

#define	ADC_BUF_DEPTH (MAX_AV_NB_SAMPLE/2)

Functions
static	IN_DMA_SECTION (adcsample_t adc_samples[ADC_NUM_CHANNELS *ADC_BUF_DEPTH])

static void	adc_regular_sequence (uint32_t sqr1, uint32_t sqr2, uint32_t *sqr3, uint8_t length, const uint8_t channel[])

static void	adc_sample_time_on_all_channels (uint32_t smpr1, uint32_t smpr2, uint8_t time)

void	adc1callback (ADCDriver adcp, adcsample_t buffer, size_t n)
	Adc1 callback. More...

static void	adcerrorcallback (ADCDriver *adcp, adcerror_t err)
	Adc error callback. More...

void	adc_buf_channel (uint8_t adc_channel, struct adc_buf *s, uint8_t av_nb_sample)
	Link between ChibiOS ADC drivers and Paparazzi adc_buffers. More...

void	adc_init (void)
	Adc init. More...

Variables
static const uint8_t	adc_channel_map [ADC_NUM_CHANNELS]
	#endif More...

uint8_t	adc_error_flag = 0

ADCDriver *	adcp_err = NULL

static struct adc_buf *	adc1_buffers [ADC_NUM_CHANNELS]

static uint32_t	adc1_sum_tmp [ADC_NUM_CHANNELS]

static uint8_t	adc1_samples_tmp [ADC_NUM_CHANNELS]

static ADCConversionGroup	adcgrpcfg
	Configuration structure must be global. More...

Detailed Description

ADC driver.

ADC defines for Lia board (STM32F105) 5 Channels: 1 - ADC1, Channel 13 2 - ADC2, Channel 10 3 - ADC3, Channel 11 4 - ADC4, Channel 14 5 - Temperature sensor, Channel 16

Default buffer depth is equal to MAX_AV_NB_SAMPLE This allows us to always have more or equal samples than the user requires

Note: : With ChibiOS/RT 2.6.2 and STM32F105 chip the channels have to be interleaved, otherwise the current measurement is affected by the previous channel measured. Most likely bug on ChibiOS ADC driver for this particular chip.

For 5 actual channels we have to define (DUMMY stants for 1 dummy channel): CH1 + DUMMY + CH2 + DUMMY + CH3 + DUMMY + CH4 + DUMMY + CH_TEMP = 9 channels Then only every second channel is really read. Might be fixed in next version of ChibiOS

V_ref is 3.3V, ADC has 12bit resolution.

Definition in file adc_arch.c.

Macro Definition Documentation

#define ADC_BUF_DEPTH (MAX_AV_NB_SAMPLE/2)

Definition at line 144 of file adc_arch.c.

Referenced by adc_init().

#define USE_AD1 1

Definition at line 64 of file adc_arch.c.

Function Documentation

void adc1callback	(	ADCDriver *	adcp,
		adcsample_t *	buffer,
		size_t	n
	)

Adc1 callback.

Callback, fired after half of the buffer is filled (i.e. half of the samples is collected). Since we are assuming continuous ADC conversion, the ADC state is never equal to ADC_COMPLETE.