change CD logging to single file

include/sdcard.h

@@ -1,15 +1,17 @@
 #ifndef _SDCARD_H
 #define _SDCARD_H
 
-#include <globals.h>
+#include "globals.h"
 #include <stdio.h>
 #include <SPI.h>
 
 #if (HAS_SDCARD)
 #if HAS_SDCARD == 1
 #include <mySD.h>
+#define MYSD SD
 #elif HAS_SDCARD == 2
 #include <SD_MMC.h>
+#define MYSD SD_MMC
 #else
 #error HAS_SDCARD unknown card reader value, must be either 1 or 2
 #endif
@@ -54,7 +56,7 @@
 #define SDCARD_DATA3 13
 #endif
 
-#define SDCARD_FILE_NAME "/paxcount.%02d"
+#define SDCARD_FILE_NAME clientId
 #define SDCARD_FILE_HEADER "timestamp,wifi,ble"
 
 #if (defined BAT_MEASURE_ADC || defined HAS_PMU)
@@ -62,7 +64,7 @@
 #endif
 
 bool sdcard_init(bool create = true);
-bool sdcard_close(void);
+void sdcard_close(void);
 void sdcardWriteData(uint16_t, uint16_t, uint16_t = 0);
 
 #endif // _SDCARD_H

src/sdcard.cpp

@@ -1,4 +1,7 @@
 // routines for writing data to an SD-card, if present
+// use FAT32 formatted card
+// check whether your card reader supports SPI oder SDMMC and select appropriate
+// SD low level driver in board hal file
 
 // Local logging tag
 static const char TAG[] = __FILE__;
@@ -7,19 +10,16 @@ static const char TAG[] = __FILE__;
 
 #ifdef HAS_SDCARD
 
-static bool useSDCard;
+static bool useSDCard = false;
-
+static void openFile(void);
-static void createFile(void);
 
 File fileSDCard;
 
-bool sdcard_close(void) {
-  ESP_LOGD(TAG, "unmounting SD-card");
-  fileSDCard.flush();
-  fileSDCard.end();
-}
-
 bool sdcard_init(bool create) {
+
+  uint8_t cardType;
+  uint64_t cardSize;
+
   ESP_LOGI(TAG, "looking for SD-card...");
 
   // for usage of SD drivers on ESP32 platform see
@@ -27,22 +27,51 @@ bool sdcard_init(bool create) {
   // https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/sdmmc_host.html
 
 #if HAS_SDCARD == 1 // use SD SPI host driver
-  useSDCard = SD.begin(SDCARD_CS, SDCARD_MOSI, SDCARD_MISO, SDCARD_SCLK);
+  useSDCard = MYSD.begin(SDCARD_CS, SDCARD_MOSI, SDCARD_MISO, SDCARD_SCLK);
 #elif HAS_SDCARD == 2 // use SD MMC host driver
   // enable internal pullups of sd-data lines
   gpio_set_pull_mode(gpio_num_t(SDCARD_DATA0), GPIO_PULLUP_ONLY);
   gpio_set_pull_mode(gpio_num_t(SDCARD_DATA1), GPIO_PULLUP_ONLY);
   gpio_set_pull_mode(gpio_num_t(SDCARD_DATA2), GPIO_PULLUP_ONLY);
   gpio_set_pull_mode(gpio_num_t(SDCARD_DATA3), GPIO_PULLUP_ONLY);
-  useSDCard = SD_MMC.begin();
+  useSDCard = MYSD.begin();
 #endif
 
   if (useSDCard) {
     ESP_LOGI(TAG, "SD-card found");
-    createFile();
+    cardType = MYSD.cardType();
-  } else
+    cardSize = MYSD.cardSize() / (1024 * 1024);
+  } else {
     ESP_LOGI(TAG, "SD-card not found");
-  return useSDCard;
+    return false;
+  }
+
+  if (cardType == CARD_NONE) {
+    ESP_LOGI(TAG, "No SD card attached");
+    return false;
+  }
+
+  if (cardType == CARD_MMC) {
+    ESP_LOGI(TAG, "SD Card type: MMC");
+  } else if (cardType == CARD_SD) {
+    ESP_LOGI(TAG, "SD Card type: SDSC");
+  } else if (cardType == CARD_SDHC) {
+    ESP_LOGI(TAG, "SD Card type: SDHC");
+  } else {
+    ESP_LOGI(TAG, "SD Card type: UNKNOWN");
+  }
+
+  ESP_LOGI(TAG, "SD Card Size: %lluMB\n", cardSize);
+
+  openFile();
+
+  return true;
+}
+
+void sdcard_close(void) {
+  ESP_LOGI(TAG, "closing SD-card");
+  fileSDCard.flush();
+  fileSDCard.close();
 }
 
 void sdcardWriteData(uint16_t noWifi, uint16_t noBle,
@@ -60,7 +89,7 @@ void sdcardWriteData(uint16_t noWifi, uint16_t noBle,
   if (!useSDCard)
     return;
 
-  ESP_LOGD(TAG, "writing to SD-card");
+  ESP_LOGI(TAG, "SD: writing data");
   strftime(tempBuffer, sizeof(tempBuffer), "%FT%TZ", &tt);
   fileSDCard.print(tempBuffer);
   snprintf(tempBuffer, sizeof(tempBuffer), ",%d,%d", noWifi, noBle);
@@ -78,38 +107,39 @@ void sdcardWriteData(uint16_t noWifi, uint16_t noBle,
 
   if (++counterWrites > 2) {
     // force writing to SD-card
-    ESP_LOGD(TAG, "flushing data to card");
+    ESP_LOGI(TAG, "SD: flushing data");
     fileSDCard.flush();
     counterWrites = 0;
   }
 }
 
-void createFile(void) {
+void openFile(void) {
-  char bufferFilename[8 + 1 + 3 + 1];
+  char bufferFilename[30];
 
   useSDCard = false;
 
-  for (int i = 0; i < 100; i++) {
+  snprintf(bufferFilename, sizeof(bufferFilename), "/%s.csv", SDCARD_FILE_NAME);
-    sprintf(bufferFilename, SDCARD_FILE_NAME, i);
+  ESP_LOGI(TAG, "SD: looking for file <%s>", bufferFilename);
-    ESP_LOGD(TAG, "SD: looking for file <%s>", bufferFilename);
 
-#if HAS_SDCARD == 1
+  /*
-    bool fileExists = SD.exists(bufferFilename);
+    if (MYSD.exists(bufferFilename)) {
-#elif HAS_SDCARD == 2
+      if (MYSD.open(bufferFilename, FILE_APPEND))
-    bool fileExists = SD_MMC.exists(bufferFilename);
+        useSDCard = true;
-#endif
+    } else {
+      ESP_LOGI(TAG, "SD: file does not exist, creating it");
+      if (MYSD.open(bufferFilename, FILE_WRITE))
+        useSDCard = true;
+    }
+    */
 
-    if (!fileExists) {
+  if (!MYSD.exists(bufferFilename))
-      ESP_LOGD(TAG, "SD: file does not exist: creating");
+    ESP_LOGI(TAG, "SD: file does not exist, creating it");
 
-#if HAS_SDCARD == 1
+  if (MYSD.open(bufferFilename, FILE_WRITE))
-      fileSDCard = SD.open(bufferFilename, FILE_WRITE);
+    useSDCard = true;
-#elif HAS_SDCARD == 2
-      fileSDCard = SD_MMC.open(bufferFilename, FILE_WRITE);
-#endif
 
-      if (fileSDCard) {
+  if (useSDCard) {
-        ESP_LOGD(TAG, "SD: file opened: <%s>", bufferFilename);
+    ESP_LOGI(TAG, "SD: file opened: <%s>", bufferFilename);
     fileSDCard.print(SDCARD_FILE_HEADER);
 #if (defined BAT_MEASURE_ADC || defined HAS_PMU)
     fileSDCard.print(SDCARD_FILE_HEADER_VOLTAGE); // for battery level data
@@ -118,11 +148,10 @@ void createFile(void) {
     fileSDCard.print(SDCARD_FILE_HEADER_SDS011);
 #endif
     fileSDCard.println();
-        useSDCard = true;
+  } else {
-        break;
+    ESP_LOGE(TAG, "SD: file not opened error");
-      }
-    }
   }
+
   return;
 }