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SD Card handling

This commit is contained in:
Stefan Ostermann 2024-09-10 22:35:06 +02:00
parent 2326cd7eab
commit dfea791a2f
2 changed files with 37 additions and 10 deletions
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10
README.md
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@ -2,6 +2,16 @@
The HannaBox is a Wifi enabled music player for toddlers and small children. It features an sd card reader, three buttons, a speaker up to 3 watts and an RFID reader. It is powered by a ESP32 microcontroller module. The HannaBox is a Wifi enabled music player for toddlers and small children. It features an sd card reader, three buttons, a speaker up to 3 watts and an RFID reader. It is powered by a ESP32 microcontroller module.
## Preparation
The library https://github.com/schreibfaul1/ESP32-audioI2S is not available for Platformio in a working version. It is linked into the `lib` folder as a git submodule.
Init and pull the submodule before continuing:
```
git submodule update --init
```
## Microcontroller ## Microcontroller
We are using an ESP-WROOM-32 module. For the mp3 decoding we need a multicore CPU, be careful, there are some ESP32 with only one core. We are using an ESP-WROOM-32 module. For the mp3 decoding we need a multicore CPU, be careful, there are some ESP32 with only one core.

37
src/main.cpp
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@ -90,6 +90,10 @@ bool asyncNext = false;
bool asyncPrev = false; bool asyncPrev = false;
bool SDActive = false;
bool RFIDActive = false;
uint16_t voltage_threshold_counter = 0; uint16_t voltage_threshold_counter = 0;
size_t free_heap = 0; size_t free_heap = 0;
@ -102,22 +106,35 @@ std::map<String, String> rfid_map{{"67 152 204 14", "01-The_Box_Tops-The_Letter.
void activateSD() void activateSD()
{ {
if (SDActive)
return;
digitalWrite(CS_SDCARD, LOW); digitalWrite(CS_SDCARD, LOW);
if (!SD.begin(CS_SDCARD))
{
Serial.println("SD initialization failed!");
while (1)
;
}
SDActive = true;
} }
void deactivateSD() void deactivateSD()
{ {
//SD.end();
digitalWrite(CS_SDCARD, HIGH); digitalWrite(CS_SDCARD, HIGH);
SDActive = false;
} }
void activateRFID() void activateRFID()
{ {
digitalWrite(CS_RFID, LOW); digitalWrite(CS_RFID, LOW);
RFIDActive = true;
} }
void deactivateRFID() void deactivateRFID()
{ {
digitalWrite(CS_RFID, HIGH); digitalWrite(CS_RFID, HIGH);
RFIDActive = false;
} }
// Make size of files human readable // Make size of files human readable
@ -508,25 +525,24 @@ void setup()
pinMode(CS_SDCARD, OUTPUT); pinMode(CS_SDCARD, OUTPUT);
deactivateRFID(); deactivateRFID();
Serial.print("Initializing SD card...");
activateSD(); activateSD();
Serial.println("SD initialization done.");
//deep sleep wakeup //deep sleep wakeup
esp_sleep_enable_ext0_wakeup((gpio_num_t)BTN_START_STOP, LOW); esp_sleep_enable_ext0_wakeup((gpio_num_t)BTN_START_STOP, LOW);
Serial.print("Initializing SD card...");
if (!SD.begin(CS_SDCARD))
{
Serial.println("SD initialization failed!");
while (1)
;
}
Serial.println("SD initialization done.");
rootNode.buildDirectoryTree("/"); rootNode.buildDirectoryTree("/");
rootNode.printDirectoryTree(); rootNode.printDirectoryTree();
readDataFromFile(mapping_file.c_str()); readDataFromFile(mapping_file.c_str());
String progressPath = "/"+sys_dir+"/"+progress_file; String progressPath = "/"+sys_dir+"/"+progress_file;
@ -710,6 +726,9 @@ String getStartupSoundDir() {
void loop() void loop()
{ {
deactivateRFID();
activateSD();
if (audio.isRunning()) if (audio.isRunning())
{ {
if (asyncStop) if (asyncStop)
@ -717,8 +736,6 @@ void loop()
asyncStop = false; asyncStop = false;
stop(); stop();
} }
deactivateRFID();
activateSD();
audio.loop(); audio.loop();
if (currentNode != nullptr && !prepareSleepMode) if (currentNode != nullptr && !prepareSleepMode)
{ {