adc_demo.c File Reference

Implementation of ADC Demo Driver. More...

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "adc_demo.h"
#include "no_os_error.h"
#include "no_os_util.h"
#include "no_os_alloc.h"

Include dependency graph for adc_demo.c:

Functions
int32_t	adc_demo_init (struct adc_demo_desc **desc, struct adc_demo_init_param *param)
	init function for the adc demo driver
int32_t	adc_demo_remove (struct adc_demo_desc *desc)
	free allocated resources
int32_t	update_adc_channels (void *dev, uint32_t mask)
	active adc channels
int32_t	close_adc_channels (void *dev)
	close all channels
int32_t	adc_demo_reg_read (struct adc_demo_desc *desc, uint8_t reg_index, uint8_t *readval)
	read function for the adc demo driver
int32_t	adc_demo_reg_write (struct adc_demo_desc *desc, uint8_t reg_index, uint8_t writeval)
	write function for the adc demo driver

Variables
const uint16_t	sine_lut [128]

Detailed Description

Implementation of ADC Demo Driver.

Author

RNechita (ramon.nosp@m.a.ne.nosp@m.chita.nosp@m.@ana.nosp@m.log.c.nosp@m.om)

Copyright 2021(c) Analog Devices, Inc.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Function Documentation

adc_demo_init()

int32_t adc_demo_init	(	struct adc_demo_desc **	desc,
		struct adc_demo_init_param *	param )

init function for the adc demo driver

Parameters

desc	- descriptor for the adc
param	- initialization param for adc

Returns

0 in case of success, negative error code otherwise.

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adc_demo_reg_read()

int32_t adc_demo_reg_read	(	struct adc_demo_desc *	desc,
		uint8_t	reg_index,
		uint8_t *	readval )

read function for the adc demo driver

Parameters

desc	- descriptor for the adc
reg_index	- the address at which we want to read
readval-	the value read from register

Returns

0 in case of success, negative error code otherwise.

adc_demo_reg_write()

int32_t adc_demo_reg_write	(	struct adc_demo_desc *	desc,
		uint8_t	reg_index,
		uint8_t	writeval )

write function for the adc demo driver

Parameters

desc	- descriptor for the adc
reg_index	- the address at which we want to write
writeval	- the value to be written

Returns

0 in case of success, negative error code otherwise.

adc_demo_remove()

int32_t adc_demo_remove

(

struct adc_demo_desc *

desc

)

free allocated resources

Parameters

desc	- descriptor for the adc

Returns

0 in case of success, -1 otherwise.

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close_adc_channels()

int32_t close_adc_channels

(

void *

dev

)

close all channels

Parameters

dev	- physical instance of an adc device

Returns

0 in case of success.

update_adc_channels()

int32_t update_adc_channels	(	void *	dev,
		uint32_t	mask )

active adc channels

Parameters

dev	- descriptor for the adc
mask	- active channels mask

Returns

0 in case of success, -1 otherwise.

Variable Documentation

sine_lut

const uint16_t sine_lut[128]

Initial value:

= {
    0x0000, 0x0064, 0x00C8, 0x012C, 0x018F, 0x01F1, 0x0252, 0x02B1,
    0x030F, 0x036B, 0x03C5, 0x041C, 0x0471, 0x04C3, 0x0512, 0x055F,
    0x05A7, 0x05ED, 0x062E, 0x066C, 0x06A6, 0x06DC, 0x070D, 0x073A,
    0x0763, 0x0787, 0x07A7, 0x07C2, 0x07D8, 0x07E9, 0x07F5, 0x07FD,
    0x07FF, 0x07FD, 0x07F5, 0x07E9, 0x07D8, 0x07C2, 0x07A7, 0x0787,
    0x0763, 0x073A, 0x070D, 0x06DC, 0x06A6, 0x066C, 0x062E, 0x05ED,
    0x05A7, 0x055F, 0x0512, 0x04C3, 0x0471, 0x041C, 0x03C5, 0x036B,
    0x030F, 0x02B1, 0x0252, 0x01F1, 0x018F, 0x012C, 0x00C8, 0x0064,
    0x0000, 0xFF9B, 0xFF37, 0xFED3, 0xFE70, 0xFE0E, 0xFDAD, 0xFD4E,
    0xFCF0, 0xFC94, 0xFC3A, 0xFBE3, 0xFB8E, 0xFB3C, 0xFAED, 0xFAA0,
    0xFA58, 0xFA12, 0xF9D1, 0xF993, 0xF959, 0xF923, 0xF8F2, 0xF8C5,
    0xF89C, 0xF878, 0xF858, 0xF83D, 0xF827, 0xF816, 0xF80A, 0xF802,
    0xF800, 0xF802, 0xF80A, 0xF816, 0xF827, 0xF83D, 0xF858, 0xF878,
    0xF89C, 0xF8C5, 0xF8F2, 0xF923, 0xF959, 0xF993, 0xF9D1, 0xFA12,
    0xFA58, 0xFAA0, 0xFAED, 0xFB3C, 0xFB8E, 0xFBE3, 0xFC3A, 0xFC94,
    0xFCF0, 0xFD4E, 0xFDAD, 0xFE0E, 0xFE70, 0xFED3, 0xFF37, 0xFF9B
}