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| 1 | +/* |
| 2 | + * Microcontroller startup counter example with Portenta c33 kvstore library |
| 3 | + * This simple example demonstrates using the KVStore library to store how many times |
| 4 | + * the microcontroller has booted. The KVStore library is based on mbed OS KVStore library |
| 5 | + * |
| 6 | + * This example is based on Martin Sloup (Arcao) StartCounter example for arduino-esp32 |
| 7 | + */ |
| 8 | + |
| 9 | +#include <KVStore.h> |
| 10 | +#include <TDBStore.h> |
| 11 | +#include <MBRBlockDevice.h> |
| 12 | + |
| 13 | +auto root = BlockDevice::get_default_instance(); |
| 14 | +MBRBlockDevice bd(root, 3); |
| 15 | +TDBStore kvstore(&bd); |
| 16 | + |
| 17 | +void setup() { |
| 18 | + Serial.begin(115200); |
| 19 | + Serial.println(); |
| 20 | + |
| 21 | + while(!Serial); |
| 22 | + |
| 23 | + // Init KVStore |
| 24 | + if (kvstore.init() != KVSTORE_SUCCESS) { |
| 25 | + Serial.println("Cannot initialize kvstore"); |
| 26 | + while(1) {}; |
| 27 | + } |
| 28 | + |
| 29 | + // Remove all values stored in the kvstore |
| 30 | + // kvstore.reset(); |
| 31 | + |
| 32 | + // Or remove the counter key only |
| 33 | + // kvstore.remove("counter"); |
| 34 | + |
| 35 | + // Get the counter value, if it doesn't exist it returns KVSTORE_ERROR_ITEM_NOT_FOUND |
| 36 | + unsigned int counter; |
| 37 | + auto res = kvstore.get("counter", (void*)&counter, sizeof(counter)); |
| 38 | + |
| 39 | + if (res == KVSTORE_ERROR_ITEM_NOT_FOUND) { |
| 40 | + counter = 0; |
| 41 | + } else if (res == KVSTORE_SUCCESS) { |
| 42 | + // Increase counter by 1 |
| 43 | + counter++; |
| 44 | + } else { |
| 45 | + Serial.print("Error getting counter from kvstore: "); |
| 46 | + Serial.println(res); |
| 47 | + } |
| 48 | + |
| 49 | + // Print the counter to Serial Monitor |
| 50 | + Serial.print("Current counter value: "); |
| 51 | + Serial.println(counter); |
| 52 | + |
| 53 | + // Store the updated counter value to the kvstore |
| 54 | + if (kvstore.set("counter",(void*)&counter, sizeof(counter), 0) != KVSTORE_SUCCESS) { |
| 55 | + Serial.println("Error setting counter from kvstore"); |
| 56 | + } |
| 57 | + |
| 58 | + // Close the kvstore |
| 59 | + if (kvstore.deinit() != KVSTORE_SUCCESS) { |
| 60 | + Serial.println("Cannot deinitialize kvstore"); |
| 61 | + while(1) {}; |
| 62 | + } |
| 63 | + |
| 64 | + // Wait 10 seconds |
| 65 | + Serial.println("Restarting in 10 seconds..."); |
| 66 | + delay(10000); |
| 67 | + |
| 68 | + // Reset |
| 69 | + NVIC_SystemReset(); |
| 70 | +} |
| 71 | + |
| 72 | +void loop() {} |
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