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117 lines
3.7 KiB
117 lines
3.7 KiB
//
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// Created by MightyPork on 2018/02/03.
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//
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// ADC unit settings reading / parsing
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//
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#include "platform.h"
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#include "unit_base.h"
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#define ADC_INTERNAL
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#include "_adc_internal.h"
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/** Load from a binary buffer stored in Flash */
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void UADC_loadBinary(Unit *unit, PayloadParser *pp)
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{
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struct priv *priv = unit->data;
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uint8_t version = pp_u8(pp);
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(void)version;
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priv->cfg.channels = pp_u32(pp);
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priv->cfg.sample_time = pp_u8(pp);
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priv->cfg.frequency = pp_u32(pp);
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priv->cfg.buffer_size = pp_u32(pp);
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priv->cfg.averaging_factor = pp_u16(pp);
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if (version >= 1) {
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priv->cfg.enable_averaging = pp_bool(pp);
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}
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}
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/** Write to a binary buffer for storing in Flash */
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void UADC_writeBinary(Unit *unit, PayloadBuilder *pb)
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{
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struct priv *priv = unit->data;
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pb_u8(pb, 1); // version
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pb_u32(pb, priv->cfg.channels);
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pb_u8(pb, priv->cfg.sample_time);
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pb_u32(pb, priv->cfg.frequency);
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pb_u32(pb, priv->cfg.buffer_size);
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pb_u16(pb, priv->cfg.averaging_factor);
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pb_bool(pb, priv->cfg.enable_averaging);
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}
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// ------------------------------------------------------------------------
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/** Parse a key-value pair from the INI file */
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error_t UADC_loadIni(Unit *unit, const char *key, const char *value)
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{
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bool suc = true;
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struct priv *priv = unit->data;
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if (streq(key, "channels")) {
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priv->cfg.channels = cfg_pinmask_parse_32(value, &suc);
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}
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else if (streq(key, "sample_time")) {
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priv->cfg.sample_time = cfg_u8_parse(value, &suc);
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if (priv->cfg.sample_time > 7) return E_BAD_VALUE;
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}
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else if (streq(key, "frequency")) {
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priv->cfg.frequency = cfg_u32_parse(value, &suc);
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}
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else if (streq(key, "buffer_size")) {
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priv->cfg.buffer_size = cfg_u32_parse(value, &suc);
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}
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else if (streq(key, "avg_factor")) {
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priv->cfg.averaging_factor = cfg_u16_parse(value, &suc);
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if (priv->cfg.averaging_factor > 1000) return E_BAD_VALUE;
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}
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else if (streq(key, "averaging")) {
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priv->cfg.enable_averaging = cfg_bool_parse(value, &suc);
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}
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else {
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return E_BAD_KEY;
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}
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if (!suc) return E_BAD_VALUE;
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return E_SUCCESS;
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}
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/** Generate INI file section for the unit */
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void UADC_writeIni(Unit *unit, IniWriter *iw)
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{
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struct priv *priv = unit->data;
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iw_comment(iw, "Enabled channels, comma separated");
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iw_comment(iw, " 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17");
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iw_comment(iw, "A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 C0 C1 C2 C3 C4 C5 Tsens Vref");
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iw_entry_s(iw, "channels", cfg_pinmask_encode(priv->cfg.channels, unit_tmp512, true));
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iw_cmt_newline(iw);
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iw_comment(iw, "Sampling time (0-7)");
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iw_entry_d(iw, "sample_time", priv->cfg.sample_time);
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iw_comment(iw, "Sampling frequency (Hz)");
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iw_entry_d(iw, "frequency", priv->cfg.frequency);
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iw_cmt_newline(iw);
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iw_comment(iw, "Sample buffer size");
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iw_comment(iw, "- shared by all enabled channels");
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iw_comment(iw, "- defines the maximum pre-trigger size (divide by # of channels)");
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iw_comment(iw, "- captured data is sent in half-buffer chunks");
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iw_comment(iw, "- buffer overrun aborts the data capture");
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iw_entry_d(iw, "buffer_size", priv->cfg.buffer_size);
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iw_cmt_newline(iw);
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iw_comment(iw, "Enable continuous sampling with averaging");
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iw_comment(iw, "Caution: This can cause DAC output glitches");
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iw_entry_s(iw, "averaging", str_yn(priv->cfg.enable_averaging));
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iw_comment(iw, "Exponential averaging coefficient (permil, range 0-1000 ~ 0.000-1.000)");
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iw_comment(iw, "- used formula: y[t]=(1-k)*y[t-1]+k*u[t]");
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iw_comment(iw, "- not available when a capture is running");
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iw_entry_d(iw, "avg_factor", priv->cfg.averaging_factor);
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}
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