fix

.gitignore

@@ -1,3 +1,4 @@
 src/build/
+src/main/version.c
 config.csv
 config.bin

readme.md

@@ -0,0 +1,6 @@
+Generate configuration binary:
+   ~/esp/esp-idf/components/nvs_flash/nvs_partition_generator/nvs_partition_gen.py generate --version 1 config.csv config.bin 0x6000
+
+Flash configuration binary:
+   esptool -p /dev/ttyUSB0 write_flash 0x9000 ../config.bin
+

src/main/CMakeLists.txt

@@ -5,4 +5,5 @@ idf_component_register(SRCS "app_main.c"
                             "timesync.c"
                             "sha256.c"
                             "sinkSender.c"
+                            "version.c"
                     INCLUDE_DIRS ".")

src/main/app_main.c

@@ -18,7 +18,7 @@
 #include "timesync.h"
 #include "sinkSender.h"
 
-const char VERSION[] = "deadbeef";
+extern const uint32_t APP_VERSION;
 
 
 // static const char *TAG = "app";

src/main/counter.c

@@ -23,9 +23,6 @@ static const uint64_t QUEUE_MARKER = UINT64_MAX;
 
 xQueueHandle minuteBufferQueue = NULL;
 
-static t_minuteBuffer minuteBuffer;
-static uint32_t secondOfMinute;
-static bool settled = false;
 
 static void counterSecondTask(void *arg) {
     while (1) {
@@ -35,9 +32,14 @@ static void counterSecondTask(void *arg) {
 }
 
 static void counterZeroCrossingAveragerTask(void *arg) {
+    static uint32_t secondOfMinute = 0;
+    static bool settled = false;
+    static t_minuteBuffer minuteBuffer;
+
     uint64_t counterCnt = 0;
     uint64_t counterSum = 0;
     uint64_t savedCounterValue = 0;
+    
     while (1) {
         uint64_t currentCounterValue;
         xQueueReceive(zeroCrossingQueue, &currentCounterValue, portMAX_DELAY);
@@ -45,7 +47,8 @@ static void counterZeroCrossingAveragerTask(void *arg) {
             if (counterCnt > 0) {
                 uint32_t counterSecondAverage = ((uint32_t)(counterSum)) / ((uint32_t)(counterCnt));
                 bool timeInSync = timesyncReady();
-                ESP_LOGI(TAG, "%d %u %u %u", timeInSync, (uint32_t)counterCnt, (uint32_t)counterSum, counterSecondAverage);
+                ESP_LOGI(TAG, "%d %u %u %u %u", timeInSync, secondOfMinute, (uint32_t)counterCnt, 
+                         (uint32_t)counterSum, counterSecondAverage);
 
                 if (timeInSync) {      
                     uint32_t frequency = PRECISION * COUNTER_FREQUENCY / counterSecondAverage;
@@ -119,9 +122,6 @@ void counterInit() {
     zeroCrossingQueue = xQueueCreate(20, sizeof(uint64_t));
     minuteBufferQueue = xQueueCreate(5, sizeof(t_minuteBuffer));
 
-    settled = false;
-    secondOfMinute = 0;
-
     xTaskCreate(counterSecondTask, "counter_second_task", 2048, NULL, 5, NULL);
-    xTaskCreate(counterZeroCrossingAveragerTask, "counter_averager_task", 2048, NULL, 5, NULL);
+    xTaskCreate(counterZeroCrossingAveragerTask, "counter_averager_task", 4096, NULL, 5, NULL);
 }

src/main/sinkSender.c

@@ -20,8 +20,6 @@
 
 
 static const char *TAG = "ss";
-extern char VERSION[];
-
 
 static const char SINK_SERVER[] = "sink.hottis.de";
 static const uint16_t SINK_PORT = 20169;
@@ -31,6 +29,7 @@ static char deviceId[16];
 static const char DEFAULT_SHAREDSECRET[] = "1234567890123456789012345678901";
 static char sharedSecret[32];
 
+extern const uint32_t APP_VERSION;
 
 
 extern xQueueHandle minuteBufferQueue;
@@ -41,7 +40,7 @@ static void sinksenderSend(t_minuteBuffer *minuteBuffer) {
     minuteBuffer->s.totalRunningHours = (uint32_t) uptime;
     minuteBuffer->s.totalPowercycles = 0;
     minuteBuffer->s.totalWatchdogResets = 0;
-    minuteBuffer->s.version = strtoll(VERSION, NULL, 16);
+    minuteBuffer->s.version = APP_VERSION;
 
     memset(minuteBuffer->s.deviceId, 0, sizeof(minuteBuffer->s.deviceId));
     strcpy(minuteBuffer->s.deviceId, deviceId);
@@ -104,39 +103,64 @@ void sinksenderInit() {
     ESP_LOGI(TAG, "Initializing sink sender");
 
     ESP_LOGI(TAG, "About to load sink sender configuration");
+
+    uint8_t macAddress[6];
+    if (ESP_OK == esp_efuse_mac_get_default(macAddress)) {
+        sprintf(deviceId, "%02x%02x%02x%02x%02x%02x", 
+                macAddress[0], macAddress[1], macAddress[2],
+                macAddress[3], macAddress[4], macAddress[5]);
+    } else {
+        ESP_LOGE(TAG, "can not read mac address, use default device id");
+        strcpy(deviceId, DEFAULT_DEVICE_ID);
+    }
+
     nvs_handle_t nvsHandle;
     if (ESP_OK != nvs_open("sink", NVS_READWRITE, &nvsHandle)) {
         ESP_LOGE(TAG, "Unable to open nvs namespace sink, use default values");
-        strcpy(deviceId, DEFAULT_DEVICE_ID);
         strcpy(sharedSecret, DEFAULT_SHAREDSECRET);
     } else {
         size_t s;
         esp_err_t err;
 
-        err = nvs_get_str(nvsHandle, "deviceId", NULL, &s);
-        ESP_LOGI(TAG, "1. err: %d, len: %d", err, s);
-        err = nvs_get_str(nvsHandle, "deviceId", deviceId, &s);
-        ESP_LOGI(TAG, "2. err: %d, len: %d", err, s);
-        if (err == ESP_OK) {
-            ESP_LOGI(TAG, "deviceId: %s", deviceId);
-        } else {
-            strcpy(deviceId, DEFAULT_DEVICE_ID);
-            ESP_LOGI(TAG, "deviceId not configured, use default");            
-        }
         err = nvs_get_str(nvsHandle, "sharedSecret", NULL, &s);
-        ESP_LOGI(TAG, "1. err: %d, len: %d", err, s);
         err = nvs_get_str(nvsHandle, "sharedSecret", sharedSecret, &s);
-        ESP_LOGI(TAG, "2. err: %d, len: %d", err, s);
+        if (err != ESP_OK) {
-        if (err == ESP_OK) {
+            ESP_LOGI(TAG, "sharedSecret not configured, create one");
-            ESP_LOGI(TAG, "sharedSecret: %s", sharedSecret);
+            memset(sharedSecret, 0, sizeof(sharedSecret));
-        } else {
+            esp_fill_random(sharedSecret, sizeof(sharedSecret)-1);
-            strcpy(sharedSecret, DEFAULT_SHAREDSECRET);
+            for (uint8_t i = 0; i < sizeof(sharedSecret)-1; i++) {
-            ESP_LOGI(TAG, "sharedSecret not configured, use default");            
+                sharedSecret[i] = (sharedSecret[i] % 90) + 33; // 0 .. 255 -> 33 .. 122
+                if (sharedSecret[i] == 34) { // "
+                    sharedSecret[i] = 123;   // {
+                } 
+                if (sharedSecret[i] == 39) { // '
+                    sharedSecret[i] = 124;   // |
+                } 
+                if (sharedSecret[i] == 92) { // }
+                    sharedSecret[i] = 125;   // 
+                } 
+                if (sharedSecret[i] == 96) { // `
+                    sharedSecret[i] = 126;   // ~
+                } 
+            }
+            ESP_LOGI(TAG, "generated sharedSecret is %s", sharedSecret);
+            if (ESP_OK == nvs_set_str(nvsHandle, "sharedSecret", sharedSecret)) {
+                ESP_LOGI(TAG, "new sharedSecret stored");
+                if (ESP_OK == nvs_commit(nvsHandle)) {
+                    ESP_LOGI(TAG, "config store committed");
+                } else {
+                    ESP_LOGE(TAG, "unable to commit config store");
+                }
+            } else {
+                ESP_LOGE(TAG, "unable to store sharedSecret");
+            }
         }
     }
 
     ESP_LOGI(TAG, "finally deviceId: %s", deviceId);
-    ESP_LOGI(TAG, "finally sharedSecret: %s", sharedSecret);
+    ESP_LOGI(TAG, "finally sharedSecret: [masked]");
+
+    nvs_close(nvsHandle);
 
     xTaskCreate(sinksenderExecTask, "sinksender_exec_task", 4096, NULL, 5, NULL);
 }

tools/setVersion.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+VERSION=`git rev-parse --short=8 HEAD`
+
+cat - > ./src/main/version.c <<EOF
+#include <stdint.h>
+const uint32_t APP_VERSION = 0x${VERSION};
+EOF
+
+