Minimize write and read function

Signed-off-by: cybnon <stefan.weber93@googlemail.com>

Author: Cybnon

src/atecc608_handler.cpp

@@ -208,14 +208,13 @@ int atecc_handler_inject_priv_key(int slot, uint8_t* priv_key){
     return status;
 }
 
-/** save data in slot
+/** Write 64 bytes of data to a slot
  *  \param[in] slot slot number to which data is to be written
- *  \param[in] data data byte array to write
- *  \param[in] data_len length of the data byte array (must be a multiple of 32)
+ *  \param[in] data data byte array to write (must be 64 bytes)
  *  \return ATCA_SUCCESS on success, otherwise an error code.
  */
-int atecc_handler_write_data(int slot, uint8_t* data, size_t data_len) {
-    if (!data || data_len == 0) {
+int atecc_handler_write_data(int slot, const uint8_t* data) {
+    if (!data) {
         return ATCA_BAD_PARAM;
     }
 
@@ -224,38 +223,22 @@ int atecc_handler_write_data(int slot, uint8_t* data, size_t data_len) {
         return status;
     }
 
-    // Calculate the number of blocks and any remaining bytes
-    size_t num_blocks = data_len / 32;
-    size_t remaining_bytes = data_len % 32;
-
-    // Write full blocks
-    for (size_t i = 0; i < num_blocks; i++) {
-        status = atcab_write_zone(ATCA_ZONE_DATA, slot, i, 0, &data[i * 32], 32);
-        if (status != ATCA_SUCCESS) {
-            return status;
-        }
-    }
-
-    // Write remaining bytes if any
-    if (remaining_bytes > 0) {
-        status = atcab_write_zone(ATCA_ZONE_DATA, slot, num_blocks, 0, &data[num_blocks * 32], remaining_bytes);
-        if (status != ATCA_SUCCESS) {
-            return status;
-        }
+    // Write 64 bytes at once
+    status = atcab_write_zone(ATCA_ZONE_DATA, slot, 0, 0, data, 64);
+    if (status != ATCA_SUCCESS) {
+        printf("Write error: %d\n", status);
     }
 
-    return ATCA_SUCCESS;
+    return status;
 }
 
-
-/* read data from slot
+/** Read 64 bytes of data from a slot
  *  \param[in] slot slot number from which data is to be read
- *  \param[out] data buffer to store the read data
- *  \param[in] data_len length of the data byte array (must be a multiple of 32)
+ *  \param[out] data buffer to store the read data (must be at least 64 bytes)
  *  \return ATCA_SUCCESS on success, otherwise an error code.
  */
-int atecc_handler_read_data(int slot, uint8_t* data, size_t data_len) {
-    if (!data || data_len == 0) {
+int atecc_handler_read_data(int slot, uint8_t* data) {
+    if (!data) {
         return ATCA_BAD_PARAM;
     }
 
@@ -264,30 +247,15 @@ int atecc_handler_read_data(int slot, uint8_t* data, size_t data_len) {
         return status;
     }
 
-    // Calculate the number of blocks and any remaining bytes
-    size_t num_blocks = data_len / 32;
-    size_t remaining_bytes = data_len % 32;
-
-    // Read full blocks
-    for (size_t i = 0; i < num_blocks; i++) {
-        status = atcab_read_zone(ATCA_ZONE_DATA, slot, i, 0, &data[i * 32], 32);
-        if (status != ATCA_SUCCESS) {
-            return status;
-        }
-    }
-
-    // Read remaining bytes if any
-    if (remaining_bytes > 0) {
-        status = atcab_read_zone(ATCA_ZONE_DATA, slot, num_blocks, 0, &data[num_blocks * 32], remaining_bytes);
-        if (status != ATCA_SUCCESS) {
-            return status;
-        }
+    // Read 64 bytes at once
+    status = atcab_read_zone(ATCA_ZONE_DATA, slot, 0, 0, data, 64);
+    if (status != ATCA_SUCCESS) {
+        printf("Read error: %d\n", status);
     }
 
-    return ATCA_SUCCESS;
+    return status;
 }
 
-
 /** \brief Initialize atecc object and bus
  *  \param[in] slot slot number of key to be written
  *  \param[in] pub_key public key will be written here