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Minimized and with real time in the plots

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This commit is contained in:
Jonas Hahn
2025-12-20 20:58:07 +01:00
parent ce9b819b18
commit 552055fd0a
5 changed files with 29 additions and 74 deletions
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9
.gitignore vendored
View File

@@ -1,4 +1,9 @@
# Artifacts
build/
.cache/
sdkconfig*
data/
# Dont leak wifi password to git database
sdkconfig
sdkconfig.old
.cache/

19
main.go
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@@ -12,6 +12,7 @@ import (
)
var dataFile *os.File
var startTime time.Time
type VoltageData struct {
Voltage float64 `json:"voltage"`
@@ -24,7 +25,7 @@ func initDataFile() {
}
// Generate a filename with timestamp
filename := filepath.Join("data", fmt.Sprintf("voltages_%s.txt", time.Now().Format("20060102_150405")))
filename := filepath.Join("data", fmt.Sprintf("voltages_%s.csv", time.Now().Format("20060102_150405")))
file, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0644)
if err != nil {
log.Fatalf("Failed to open data file: %v", err)
@@ -32,6 +33,11 @@ func initDataFile() {
dataFile = file
log.Printf("Logging voltage data to %s\n", filename)
// Write CSV header
_, _ = dataFile.WriteString("time_s,voltage\n")
startTime = time.Now()
}
func handler(w http.ResponseWriter, r *http.Request) {
@@ -54,12 +60,15 @@ func handler(w http.ResponseWriter, r *http.Request) {
return
}
// Print voltage to console
fmt.Println("Received voltage:", v.Voltage)
// Compute relative time
relTime := time.Since(startTime).Seconds()
// Append voltage number to file
// Print voltage to console
fmt.Printf("Received voltage: %f at time %.3f s\n", v.Voltage, relTime)
// Append CSV line to file
if dataFile != nil {
if _, err := dataFile.WriteString(fmt.Sprintf("%f\n", v.Voltage)); err != nil {
if _, err := dataFile.WriteString(fmt.Sprintf("%.3f,%.6f\n", relTime, v.Voltage)); err != nil {
log.Printf("Failed to write to file: %v", err)
}
}

58
main/Kconfig.projbuild
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@@ -1,5 +1,4 @@
menu "Example Configuration"
menu "Setup wifi"
config ESP_WIFI_SSID
string "WiFi SSID"
default "myssid"
@@ -11,59 +10,4 @@ menu "Example Configuration"
default "mypassword"
help
WiFi password (WPA or WPA2) for the example to use.
choice ESP_WIFI_SAE_MODE
prompt "WPA3 SAE mode selection"
default ESP_STATION_EXAMPLE_WPA3_SAE_PWE_BOTH
help
Select mode for SAE as Hunt and Peck, H2E or both.
config ESP_STATION_EXAMPLE_WPA3_SAE_PWE_HUNT_AND_PECK
bool "HUNT AND PECK"
config ESP_STATION_EXAMPLE_WPA3_SAE_PWE_HASH_TO_ELEMENT
bool "H2E"
depends on ESP_WIFI_ENABLE_SAE_H2E
config ESP_STATION_EXAMPLE_WPA3_SAE_PWE_BOTH
bool "BOTH"
depends on ESP_WIFI_ENABLE_SAE_H2E
endchoice
config ESP_WIFI_PW_ID
string "PASSWORD IDENTIFIER"
depends on ESP_STATION_EXAMPLE_WPA3_SAE_PWE_HASH_TO_ELEMENT|| ESP_STATION_EXAMPLE_WPA3_SAE_PWE_BOTH
default ""
help
password identifier for SAE H2E
config ESP_MAXIMUM_RETRY
int "Maximum retry"
default 5
help
Set the Maximum retry to avoid station reconnecting to the AP unlimited when the AP is really inexistent.
choice ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD
prompt "WiFi Scan auth mode threshold"
default ESP_WIFI_AUTH_WPA2_PSK
help
The weakest authmode to accept in the scan mode.
This value defaults to ESP_WIFI_AUTH_WPA2_PSK in case password is present and ESP_WIFI_AUTH_OPEN is used.
Please select ESP_WIFI_AUTH_WEP/ESP_WIFI_AUTH_WPA_PSK in case AP is operating in WEP/WPA mode.
config ESP_WIFI_AUTH_OPEN
bool "OPEN"
config ESP_WIFI_AUTH_WEP
bool "WEP"
config ESP_WIFI_AUTH_WPA_PSK
bool "WPA PSK"
config ESP_WIFI_AUTH_WPA2_PSK
bool "WPA2 PSK"
config ESP_WIFI_AUTH_WPA_WPA2_PSK
bool "WPA/WPA2 PSK"
config ESP_WIFI_AUTH_WPA3_PSK
bool "WPA3 PSK"
config ESP_WIFI_AUTH_WPA2_WPA3_PSK
bool "WPA2/WPA3 PSK"
config ESP_WIFI_AUTH_WAPI_PSK
bool "WAPI PSK"
endchoice
endmenu

4
main/station_example_main.c
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@@ -27,7 +27,7 @@
/* ===================== CONSTS ===================== */
#define SERVER_URL "http://192.168.178.157:8080/data"
#define RMS_WINDOW_MS 300
#define RMS_WINDOW_MS 200
#define CHANNEL ADC_CHANNEL_6
// TODO: Determine this
@@ -38,7 +38,6 @@
#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
#define ESP_WIFI_SAE_MODE WPA3_SAE_PWE_BOTH
#define EXAMPLE_H2E_IDENTIFIER CONFIG_ESP_WIFI_PW_ID
#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_PSK
// Tag for logging
@@ -117,7 +116,6 @@ void wifi_init_sta(void)
*/
.threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD,
.sae_pwe_h2e = ESP_WIFI_SAE_MODE,
.sae_h2e_identifier = EXAMPLE_H2E_IDENTIFIER,
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );

13
plot.py
View File

@@ -3,10 +3,9 @@ import matplotlib.pyplot as plt
import numpy as np
DATA_DIR = "data"
SAMPLE_INTERVAL_MS = 300 # time between measurements in milliseconds
# Find the latest data file
files = [f for f in os.listdir(DATA_DIR) if f.startswith("voltages_") and f.endswith(".txt")]
files = [f for f in os.listdir(DATA_DIR) if f.startswith("voltages_") and f.endswith(".csv")]
if not files:
raise FileNotFoundError("No voltage data files found in 'data/'")
@@ -14,11 +13,10 @@ latest_file = max(files, key=lambda f: os.path.getmtime(os.path.join(DATA_DIR, f
filepath = os.path.join(DATA_DIR, latest_file)
print(f"Plotting data from {filepath}")
# Load voltage values
voltages = np.loadtxt(filepath)
# Create time axis (in seconds)
times = np.arange(len(voltages)) * (SAMPLE_INTERVAL_MS / 1000.0)
# Load CSV data (skip header)
data = np.loadtxt(filepath, delimiter=",", skiprows=1)
times = data[:, 0]
voltages = data[:, 1]
# Plot
plt.figure(figsize=(10, 5))
@@ -29,3 +27,4 @@ plt.title(f"Voltage Measurements ({latest_file})")
plt.grid(True)
plt.tight_layout()
plt.show()