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Fix out of range refresh rate

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This commit is contained in:
Victor Talpaert
2026-04-05 23:25:34 +02:00
parent 765d8922a6
commit 0695f6d851
2 changed files with 19 additions and 10 deletions
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10
main/index.html
View File

@@ -263,7 +263,7 @@
<div class="control-group">
<label>Rate(Hz)</label>
<input type="number" id="sampleRate" value="10000" min="1" max="83333">
<input type="number" id="sampleRate" value="20000" min="20000" max="2000000">
</div>
<div class="control-group" style="display: none;">
@@ -279,10 +279,10 @@
<div class="control-group">
<label>Atten</label>
<select id="atten">
<option value="0">0dB</option>
<option value="1">2.5dB</option>
<option value="2">6dB</option>
<option value="3" selected>11dB</option>
<option value="0">0dB (0–1.0V)</option>
<option value="1">2.5dB (0–1.34V)</option>
<option value="2">6dB (0–2.0V)</option>
<option value="3" selected>11dB (0–3.6V)</option>
</select>
</div>

19
main/main.c
View File

@@ -40,8 +40,11 @@ static void start_webserver(void);
#define ADC_ATTEN ADC_ATTEN_DB_11
#define ADC_BIT_WIDTH ADC_BITWIDTH_12
#define ADC_OUTPUT_TYPE ADC_DIGI_OUTPUT_FORMAT_TYPE2
#define ADC_GET_DATA(p_data) ((p_data)->type2.data)
// TYPE2 is only available on newer chips (S3, C6, etc.). ESP32 (WROOM-32) requires TYPE1.
// #define ADC_OUTPUT_TYPE ADC_DIGI_OUTPUT_FORMAT_TYPE2
// #define ADC_GET_DATA(p_data) ((p_data)->type2.data)
#define ADC_OUTPUT_TYPE ADC_DIGI_OUTPUT_FORMAT_TYPE1
#define ADC_GET_DATA(p_data) ((p_data)->type1.data)
/*
* Web Server Configuration
@@ -421,9 +424,15 @@ static esp_err_t params_handler(httpd_req_t* req) {
cJSON* root = cJSON_Parse(buf);
if (root) {
cJSON* sample_rate = cJSON_GetObjectItem(root, "sample_rate");
if (sample_rate && s_sample_rate != sample_rate->valueint) {
s_reconfig_needed = true;
s_sample_rate = sample_rate->valueint;
if (sample_rate) {
uint32_t requested = (uint32_t)sample_rate->valueint;
// ESP32 ADC continuous mode valid range: 20kHz – 2MHz (SOC_ADC_SAMPLE_FREQ_THRES_LOW/HIGH)
if (requested < 20000) requested = 20000;
if (requested > 2000000) requested = 2000000;
if (s_sample_rate != requested) {
s_reconfig_needed = true;
s_sample_rate = requested;
}
}
cJSON* atten = cJSON_GetObjectItem(root, "atten");
if (atten && s_atten != (adc_atten_t)atten->valueint) {