56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
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#include "pxt.h"
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/**
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* Provides access to persistent storage functionality.
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*/
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namespace storage {
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/**
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* Saves a key value pair in the non volatile storage
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* @param key the key for accesing the value
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* @param value value to store
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*/
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//% weight=100 blockGap=16
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//% block="Put into %key a value of %value as number"
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//% blockId=storage_put_value
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//% value.defl=0
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//% group="Put"
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//% blockHidden=true
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void putValue(String key, String value) {
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uBit.storage.put(MSTR(key), (uint8_t *)&value, sizeof(int));
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}
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/**
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* Reads a key value pair from the non volatile storage
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* @param key the key for accesing the value
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*/
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//% weight=100 blockGap=16
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//% block="get number from %key"
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//% blockId=storage_get_value
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//% group="Get"
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//% blockHidden=true
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String getValue(String key) {
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KeyValuePair* data = uBit.storage.get(MSTR(key));
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String stored;
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if(data == NULL) {
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return mkString("", -1);
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} else {
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memcpy(&stored, data->value, sizeof(int));
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delete data;
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return stored;
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}
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}
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/**
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* Reads a key value pair from the non volatile storage
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* @param key the key for accesing the value
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*/
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//% weight=100 blockGap=16
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//% block="remove %key"
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//% blockId=storage_remove
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//% group="Remove"
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//% blockHidden=true
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void remove(String key) {
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uBit.storage.remove(MSTR(key));
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}
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}
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