adc.h File Reference

arch independent ADC (Analog to Digital Converter) API More...

#include <inttypes.h>
#include "mcu_periph/adc_arch.h"

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Data Structures
struct	adc_buf
	Generic interface for all ADC hardware drivers, independent from microcontroller architecture. More...

Macros
#define	MAX_AV_NB_SAMPLE   0x20
#define	DEFAULT_AV_NB_SAMPLE   0x20

Functions
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)
	Starts conversions. More...

Detailed Description

arch independent ADC (Analog to Digital Converter) API

Facility to store last values in a circular buffer for a specific channel:

• allocate a (struct adc_buf)
• register it with the adc_buf_channel function

Definition in file adc.h.

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Data Structure Documentation

adc_buf

struct adc_buf

Generic interface for all ADC hardware drivers, independent from microcontroller architecture.

Struct to collect samples from ADC and building an average over MAX_AV_NB_SAMPLE values. See adc_buf_channel.

Definition at line 53 of file adc.h.

Data Fields
uint8_t	av_nb_sample
uint8_t	head
uint32_t	sum
uint16_t	values[MAX_AV_NB_SAMPLE]

Macro Definition Documentation

DEFAULT_AV_NB_SAMPLE

#define DEFAULT_AV_NB_SAMPLE   0x20

Definition at line 41 of file adc.h.

MAX_AV_NB_SAMPLE

#define MAX_AV_NB_SAMPLE   0x20

Definition at line 40 of file adc.h.

Function Documentation

adc_buf_channel()

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.

Registers a buffer to be used to store the specified converted channel
Usage:

struct adc_buf channel_buf;
adc_buf_channel(1, &channel_buf, 12);

Registers channel_buf as buffer for ADC channel 1, with max index 12 (12 samples).

Todo:

: fx a more general ADC

Definition at line 312 of file adc_arch.c.

References adc1_buffers, ADC_NUM_CHANNELS, MAX_AV_NB_SAMPLE, nb_adc1_channels, nb_adc2_channels, nb_adc3_channels, and s.

Referenced by adc_generic_init(), airspeed_adc_init(), aoa_adc_init(), electrical_init(), glide_wing_lock_init(), humid_hih_init(), light_solar_init(), light_temt_init(), mf_ptu_init(), sonar_adc_init(), temp_adc_init(), temp_tcouple_adc_init(), and wing_rotation_adc_init().

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adc_init()

void adc_init

(

void

)

Starts conversions.

Starts conversions.

Initialize ADC drivers, buffers and start conversion in the background

Starts conversions.

Definition at line 332 of file adc_arch.c.

References AD1_1_CHANNEL, AD1_2_CHANNEL, AD1_3_CHANNEL, AD1_4_CHANNEL, adc1_buffers, adc1_group, adc1callback(), ADC_1_GPIO_PIN, ADC_1_GPIO_PORT, ADC_2_GPIO_PIN, ADC_2_GPIO_PORT, ADC_3_GPIO_PIN, ADC_3_GPIO_PORT, ADC_4_GPIO_PIN, ADC_4_GPIO_PORT, ADC_5_GPIO_PIN, ADC_5_GPIO_PORT, ADC_7_GPIO_PIN, ADC_7_GPIO_PORT, ADC_9_GPIO_PIN, ADC_9_GPIO_PORT, ADC_BUF_DEPTH, adc_channel_map, adc_configure(), adc_dev_init(), adc_init_irq(), adc_init_rcc(), adc_init_single(), ADC_NUM_CHANNELS, ADC_SAMPLE_RATE, adcerrorcallback(), gpio_setup_pin_analog(), nb_adc1_channels, nb_adc2_channels, nb_adc3_channels, and PRINT_CONFIG_MSG().

Referenced by mcu_init().

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