120 lines
2.2 KiB
C++
120 lines
2.2 KiB
C++
#ifndef _OSCILLOSK_HPP
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#define _OSCILLOSK_HPP
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#include "daisy.h"
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#include "tft.hpp"
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using namespace daisy;
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#define OSCLSK_SCREEN_XSZ ILI9341_TFTHEIGHT
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#define OSCLSK_SCREEN_YSZ ILI9341_TFTWIDTH
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#define OSCLSK_RATE_DIV 16
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#define OSCLSK_LKB_AMOUNT 10
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#define OSCLSK_BLOCK_LEN OSCLSK_SCREEN_XSZ
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#define OSCLSK_TRIG_LOOKBACK 0x100u
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#define OSCLSK_TFT_CMD_BUF_NSPLIT 4
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#define OSCLSK_CMDS_LEN 8 * OSCLSK_SCREEN_XSZ
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struct osclsk_scope {
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enum class osc_cc {
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FOREGROUND,
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BACKGROUND
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};
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enum class osc_state {
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INIT,
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TRIGGER,
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SAMPLE,
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SAMPLE_DONE,
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RENDER,
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RENDER_DONE,
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READY
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};
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enum class osc_trig_mode {
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RISING_EDGE,
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FALLING_EDGE,
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ABS_THRESHOLD,
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INSTANT
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};
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enum class osc_trig_state {
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INIT,
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READY,
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NO_TRIG,
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TRIG,
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TRIGGERED
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};
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volatile osc_state st;
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float block_y_max[OSCLSK_BLOCK_LEN];
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float block_y_min[OSCLSK_BLOCK_LEN];
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size_t block_fill;
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int block_fill_nsamp;
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float trig_lkb_y_max[OSCLSK_TRIG_LOOKBACK];
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float trig_lkb_y_min[OSCLSK_TRIG_LOOKBACK];
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size_t trig_lkb_idx;
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int trig_lkb_idx_nsamp;
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size_t trig_lkb_num;
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size_t trig_lkb_amount;
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float trig_margin;
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size_t trig_num;
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size_t trig_num_req;
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osc_trig_state trig_state;
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osc_trig_mode trig_mode;
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uint16_t rate_div;
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tft_color fg, bg;
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tft_driver_ili9341 tft;
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uint16_t screen_px_y_max[OSCLSK_SCREEN_XSZ];
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uint16_t screen_px_y_min[OSCLSK_SCREEN_XSZ];
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size_t render_idx;
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osclsk_scope(void) : st(osc_state::INIT),
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block_fill(0), block_fill_nsamp(0),
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trig_lkb_idx(0), trig_lkb_idx_nsamp(0),
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trig_lkb_amount(OSCLSK_LKB_AMOUNT),
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trig_margin(.01f), trig_num(0),
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trig_num_req(2),
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trig_state(osc_trig_state::INIT),
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trig_mode(osc_trig_mode::INSTANT),
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render_idx(0) {};
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int init(uint8_t *dma_buf, size_t dma_sz);
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int init_block(void);
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int init_screen(void);
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osc_state state(void);
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void set_color(osc_cc which, const tft_color *to_what);
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void sample(const float *sig, size_t num);
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void sample_trigger(const float *sig, size_t num);
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int wait_ready(int ms);
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int prep(void);
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int trig(void);
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bool is_triggering(float sample);
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void trig_lkb_wr_block(void);
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int render_block(void);
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static void render_finish_tft_cb(void *ctx);
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};
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#endif /* _OSCILLOSK_HPP */
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