107 lines
2.7 KiB
C
107 lines
2.7 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 "ble.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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#define AD5941_EXPECTED_ADIID 0x4144
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static EISConfig cfg;
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static EISPoint results[EIS_MAX_POINTS];
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static bool afe_inited;
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static void do_sweep(void)
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{
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if (!afe_inited) {
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eis_init(&cfg);
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afe_inited = true;
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}
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uint32_t n = eis_calc_num_points(&cfg);
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int got = eis_sweep(results, n);
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printf("Sweep complete: %d points\n", got);
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ble_send_sweep_start(got, cfg.freq_start_hz, cfg.freq_stop_hz);
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for (int i = 0; i < got; i++) {
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ble_send_eis_point(i, &results[i]);
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vTaskDelay(pdMS_TO_TICKS(10));
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}
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ble_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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ble_init();
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printf("Waiting for BLE connection...\n");
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ble_wait_for_connection();
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ble_send_config(&cfg);
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BleCommand cmd;
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for (;;) {
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if (ble_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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ble_send_config(&cfg);
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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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ble_send_config(&cfg);
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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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ble_send_config(&cfg);
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break;
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case CMD_START_SWEEP:
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do_sweep();
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break;
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case CMD_GET_CONFIG:
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ble_send_config(&cfg);
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break;
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}
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}
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}
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