329 lines
11 KiB
C
329 lines
11 KiB
C
#include <stdio.h>
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#include "ad5940.h"
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#include "ad5941_port.h"
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#include "eis.h"
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#include "echem.h"
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#include "protocol.h"
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#include "wifi_transport.h"
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#include "temp.h"
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#include "refs.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "nvs_flash.h"
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#include "esp_netif.h"
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#include "esp_event.h"
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#include "esp_timer.h"
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#define AD5941_EXPECTED_ADIID 0x4144
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static EISConfig cfg;
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static uint16_t measurement_counter = 0;
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static EISPoint results[EIS_MAX_POINTS];
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static LSVPoint lsv_results[ECHEM_MAX_POINTS];
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static AmpPoint amp_results[ECHEM_MAX_POINTS];
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static ClPoint cl_results[ECHEM_MAX_POINTS];
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static RefStore ref_store;
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static void do_sweep(void)
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{
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eis_init(&cfg);
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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uint32_t n = eis_calc_num_points(&cfg);
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send_sweep_start(n, cfg.freq_start_hz, cfg.freq_stop_hz, ts_ms, measurement_counter);
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int got = eis_sweep(results, n, send_eis_point);
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printf("Sweep complete: %d points\n", got);
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send_sweep_end();
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}
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void app_main(void)
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{
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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nvs_flash_erase();
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nvs_flash_init();
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}
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printf("EIS4: AD5941 bring-up\n");
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AD5940_MCUResourceInit(NULL);
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vTaskDelay(pdMS_TO_TICKS(50));
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AD5940_HWReset();
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vTaskDelay(pdMS_TO_TICKS(200));
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AD5940_Initialize();
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uint32_t adiid = AD5940_ReadReg(REG_AFECON_ADIID);
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printf("ADIID: 0x%04lX %s\n", adiid,
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adiid == AD5941_EXPECTED_ADIID ? "(OK)" : "(FAIL)");
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if (adiid != AD5941_EXPECTED_ADIID) return;
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eis_default_config(&cfg);
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eis_load_open_cal();
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eis_load_cell_k();
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eis_load_cl_factor();
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eis_load_ph_cal();
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temp_init();
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esp_netif_init();
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esp_event_loop_create_default();
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protocol_init();
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wifi_transport_init();
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printf("EIS4: WiFi transport ready, waiting for clients\n");
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Command cmd;
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for (;;) {
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if (protocol_recv_command(&cmd, UINT32_MAX) != 0)
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continue;
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switch (cmd.type) {
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case CMD_SET_SWEEP:
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cfg.freq_start_hz = cmd.sweep.freq_start;
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cfg.freq_stop_hz = cmd.sweep.freq_stop;
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cfg.points_per_decade = cmd.sweep.ppd;
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eis_reconfigure(&cfg);
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printf("Sweep: %.0f-%.0f Hz, %u ppd\n",
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cfg.freq_start_hz, cfg.freq_stop_hz, cfg.points_per_decade);
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break;
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case CMD_SET_RTIA:
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if (cmd.rtia < RTIA_COUNT) {
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cfg.rtia = cmd.rtia;
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eis_reconfigure(&cfg);
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printf("RTIA: %u\n", cfg.rtia);
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}
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break;
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case CMD_SET_RCAL:
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if (cmd.rcal < RCAL_COUNT) {
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cfg.rcal = cmd.rcal;
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eis_reconfigure(&cfg);
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printf("RCAL: %u\n", cfg.rcal);
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}
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break;
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case CMD_SET_ELECTRODE:
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if (cmd.electrode < ELEC_COUNT) {
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cfg.electrode = cmd.electrode;
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eis_reconfigure(&cfg);
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printf("Electrode: %s\n",
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cfg.electrode == ELEC_3WIRE ? "3-wire (CE0/RE0/SE0)" : "4-wire (AIN)");
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}
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break;
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case CMD_START_SWEEP:
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printf("Config: %.0f-%.0f Hz, %u ppd, rtia=%u, rcal=%u, elec=%s\n",
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cfg.freq_start_hz, cfg.freq_stop_hz, cfg.points_per_decade,
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cfg.rtia, cfg.rcal,
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cfg.electrode == ELEC_3WIRE ? "3-wire" : "4-wire");
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do_sweep();
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break;
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case CMD_GET_CONFIG:
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send_config(&cfg);
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break;
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case CMD_START_LSV: {
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LSVConfig lsv_cfg;
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lsv_cfg.v_start = cmd.lsv.v_start;
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lsv_cfg.v_stop = cmd.lsv.v_stop;
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lsv_cfg.scan_rate = cmd.lsv.scan_rate;
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lsv_cfg.lp_rtia = cmd.lsv.lp_rtia;
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uint32_t max_pts = ECHEM_MAX_POINTS;
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if (cmd.lsv.num_points > 0 && cmd.lsv.num_points < ECHEM_MAX_POINTS)
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max_pts = cmd.lsv.num_points;
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printf("LSV: %.0f-%.0f mV, %.0f mV/s, rtia=%u, max_pts=%lu\n",
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lsv_cfg.v_start, lsv_cfg.v_stop, lsv_cfg.scan_rate, lsv_cfg.lp_rtia,
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(unsigned long)max_pts);
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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uint32_t n = echem_lsv_calc_steps(&lsv_cfg, max_pts);
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send_lsv_start(n, lsv_cfg.v_start, lsv_cfg.v_stop, ts_ms, measurement_counter);
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int got = echem_lsv(&lsv_cfg, lsv_results, max_pts, send_lsv_point);
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printf("LSV complete: %d points\n", got);
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send_lsv_end();
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break;
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}
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case CMD_START_AMP: {
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AmpConfig amp_cfg;
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amp_cfg.v_hold = cmd.amp.v_hold;
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amp_cfg.interval_ms = cmd.amp.interval_ms;
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amp_cfg.duration_s = cmd.amp.duration_s;
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amp_cfg.lp_rtia = cmd.amp.lp_rtia;
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printf("Amp: %.0f mV, %.0f ms interval, %.0f s\n",
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amp_cfg.v_hold, amp_cfg.interval_ms, amp_cfg.duration_s);
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{
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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send_amp_start(amp_cfg.v_hold, ts_ms, measurement_counter);
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}
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int got = echem_amp(&_cfg, amp_results, ECHEM_MAX_POINTS, send_amp_point);
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printf("Amp complete: %d points\n", got);
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send_amp_end();
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break;
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}
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case CMD_GET_TEMP:
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send_temp(temp_get());
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break;
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case CMD_START_PH: {
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PhConfig ph_cfg;
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ph_cfg.stabilize_s = cmd.ph.stabilize_s;
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ph_cfg.temp_c = temp_get();
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printf("pH: stabilize %.0f s, temp %.1f C\n",
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ph_cfg.stabilize_s, ph_cfg.temp_c);
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PhResult ph_result;
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echem_ph_ocp(&ph_cfg, &ph_result);
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printf("pH: OCP=%.1f mV, pH=%.2f\n",
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ph_result.v_ocp_mv, ph_result.ph);
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{
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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send_ph_result(ph_result.v_ocp_mv, ph_result.ph, ph_result.temp_c,
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ts_ms, measurement_counter);
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}
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break;
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}
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case CMD_START_CLEAN:
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printf("Clean: %.0f mV, %.0f s\n", cmd.clean.v_mv, cmd.clean.duration_s);
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echem_clean(cmd.clean.v_mv, cmd.clean.duration_s);
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break;
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case CMD_START_REFS:
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printf("Ref collection starting\n");
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refs_collect(&ref_store, &cfg);
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break;
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case CMD_GET_REFS:
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refs_send(&ref_store);
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break;
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case CMD_CLEAR_REFS:
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refs_clear(&ref_store);
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printf("Refs cleared\n");
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break;
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case CMD_OPEN_CAL: {
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printf("Open-circuit cal starting\n");
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eis_init(&cfg);
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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uint32_t n = eis_calc_num_points(&cfg);
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send_sweep_start(n, cfg.freq_start_hz, cfg.freq_stop_hz, ts_ms, measurement_counter);
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int got = eis_open_cal(results, n, send_eis_point);
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printf("Open-circuit cal: %d points\n", got);
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send_sweep_end();
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break;
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}
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case CMD_CLEAR_OPEN_CAL:
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eis_clear_open_cal();
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printf("Open-circuit cal cleared\n");
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break;
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case CMD_SET_CELL_K:
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eis_set_cell_k(cmd.cell_k);
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send_cell_k(cmd.cell_k);
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printf("Cell K set: %.4f cm^-1\n", cmd.cell_k);
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break;
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case CMD_GET_CELL_K:
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send_cell_k(eis_get_cell_k());
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break;
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case CMD_SET_CL_FACTOR:
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eis_set_cl_factor(cmd.cl_factor);
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send_cl_factor(cmd.cl_factor);
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printf("Cl factor set: %.6f\n", cmd.cl_factor);
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break;
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case CMD_GET_CL_FACTOR:
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send_cl_factor(eis_get_cl_factor());
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break;
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case CMD_SET_PH_CAL:
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eis_set_ph_cal(cmd.ph_cal.slope, cmd.ph_cal.offset);
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send_ph_cal(cmd.ph_cal.slope, cmd.ph_cal.offset);
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printf("pH cal set: slope=%.4f offset=%.4f\n", cmd.ph_cal.slope, cmd.ph_cal.offset);
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break;
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case CMD_GET_PH_CAL:
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send_ph_cal(eis_get_ph_slope(), eis_get_ph_offset());
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break;
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case CMD_START_CL: {
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ClConfig cl_cfg;
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cl_cfg.v_cond = cmd.cl.v_cond;
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cl_cfg.t_cond_ms = cmd.cl.t_cond_ms;
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cl_cfg.v_free = cmd.cl.v_free;
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cl_cfg.v_total = cmd.cl.v_total;
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cl_cfg.t_dep_ms = cmd.cl.t_dep_ms;
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cl_cfg.t_meas_ms = cmd.cl.t_meas_ms;
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cl_cfg.lp_rtia = cmd.cl.lp_rtia;
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uint32_t n_per = (uint32_t)(cl_cfg.t_meas_ms / 50.0f + 0.5f);
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if (n_per < 2) n_per = 2;
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{
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uint32_t ts_ms = (uint32_t)(esp_timer_get_time() / 1000);
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measurement_counter++;
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send_cl_start(2 * n_per, ts_ms, measurement_counter);
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}
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ClResult cl_result;
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int got = echem_chlorine(&cl_cfg, cl_results, ECHEM_MAX_POINTS,
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&cl_result, send_cl_point);
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printf("Cl complete: %d points, free=%.3f uA, total=%.3f uA\n",
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got, cl_result.i_free_ua, cl_result.i_total_ua);
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send_cl_result(cl_result.i_free_ua, cl_result.i_total_ua);
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send_cl_end();
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break;
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}
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case CMD_SESSION_CREATE: {
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uint8_t id = session_create(cmd.session_create.name,
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cmd.session_create.name_len);
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if (id != 0xFF) {
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send_session_created(id, cmd.session_create.name,
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cmd.session_create.name_len);
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printf("Session created: %u \"%.*s\"\n",
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id, cmd.session_create.name_len, cmd.session_create.name);
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}
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break;
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}
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case CMD_SESSION_SWITCH:
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if (session_switch(cmd.session_switch.id) == 0) {
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send_session_switched(cmd.session_switch.id);
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printf("Session switched: %u\n", cmd.session_switch.id);
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}
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break;
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case CMD_SESSION_LIST:
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send_session_list();
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break;
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case CMD_SESSION_RENAME:
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if (session_rename(cmd.session_rename.id, cmd.session_rename.name,
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cmd.session_rename.name_len) == 0) {
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send_session_renamed(cmd.session_rename.id, cmd.session_rename.name,
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cmd.session_rename.name_len);
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printf("Session renamed: %u \"%.*s\"\n",
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cmd.session_rename.id, cmd.session_rename.name_len,
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cmd.session_rename.name);
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}
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break;
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case CMD_HEARTBEAT:
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send_client_list((uint8_t)wifi_get_client_count());
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send_session_list();
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send_config(&cfg);
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break;
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}
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}
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}
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