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scope.h
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scope.h
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/*
* Copyright (c) 2019 Katarzyna Stachyra <kas.stachyra@gmail.com>
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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.
*/
#ifndef SCOPE_H_
#define SCOPE_H_
#include <stdint.h>
#include <adc.h>
/** Tracking Time*/
#define TRACKING_TIME 1
/** Transfer Period */
#define TRANSFER_PERIOD 1
#define STARTUP_TIME 3
/** Sample & Hold Time */
#define SAMPLE_HOLD_TIME 6
/** Total number of ADC channels in use */
#define NUM_CHANNELS 2
/** Size of the receive buffer and transmit buffer. */
#define SCOPE_BUFFER_SIZE NUM_CHANNELS*LCD_WIDTH*2
/** Reference voltage for ADC, in mv. */
#define VOLT_REF 3300
/** Maximum number of counts */
#define MAX_DIGITAL 4095
/** Number of pixels per count - to convert raw adc to number of pixels on the display*/
#define RESOLUTION(PAGES) (PAGES*8-1)/MAX_DIGITAL //optimize the pixels conversion?
/** Number of mV per count - to convert raw adc to voltage */
#define V_RESOLUTION VOLT_REF/MAX_DIGITAL
struct adc_ch
{
enum adc_channel_num_t channel;
uint8_t offset_pages;
uint8_t offset_pixels;
uint16_t *buffer;
uint16_t *draw_buffer;
uint32_t threshold;
};
void scope_configure(enum adc_channel_num_t *adc_ch, uint32_t ul_size, uint32_t fsampling);
void scope_draw(void);
#endif /* SCOPE_H_ */