Merge pull request #124 from arduino-libraries/nina-download-ota

Add 'downloadOTA' command to download OTA file and verify length/CRC

Author: aentinger

src/WiFiStorage.h

@@ -58,6 +58,14 @@ class WiFiStorageClass
 		WiFiDrv::downloadFile(url, strlen(url), filename, strlen(filename));
 		return true;
 	}
+    static bool downloadOTA(const char * url, uint8_t * res_ota_download = NULL) {
+		uint8_t const res = WiFiDrv::downloadOTA(url, strlen(url));
+		if (res_ota_download)
+		  *res_ota_download = res;
+		bool const success = (res == 0);
+        return success;
+    }
+
 
     static bool remove(String filename) {
     	return remove(filename.c_str());
@@ -74,6 +82,9 @@ class WiFiStorageClass
     static bool download(String url, String filename) {
     	return download(url.c_str(), filename.c_str());
     }
+    static bool download(String url, uint8_t * res_ota_download = NULL) {
+        return downloadOTA(url.c_str(), res_ota_download);
+    }
 };
 
 extern WiFiStorageClass WiFiStorage;

src/utility/wifi_drv.cpp

@@ -1146,6 +1146,37 @@ int8_t WiFiDrv::downloadFile(const char* url, uint8_t url_len, const char *filen
     return _data;
 }
 
+int8_t WiFiDrv::downloadOTA(const char* url, uint8_t url_len)
+{
+    WAIT_FOR_SLAVE_SELECT();
+    // Send Command
+    SpiDrv::sendCmd(DOWNLOAD_OTA, PARAM_NUMS_1);
+    SpiDrv::sendParam((uint8_t*)url, url_len, LAST_PARAM);
+
+    // pad to multiple of 4
+    int commandSize = 5 + url_len;
+    while (commandSize % 4) {
+        SpiDrv::readChar();
+        commandSize++;
+    }
+
+    SpiDrv::spiSlaveDeselect();
+    //Wait the reply elaboration
+    SpiDrv::waitForSlaveReady();
+    SpiDrv::spiSlaveSelect();
+
+    // Wait for reply
+    uint8_t _data = 0;
+    uint8_t _dataLen = 0;
+    if (!SpiDrv::waitResponseCmd(DOWNLOAD_OTA, PARAM_NUMS_1, &_data, &_dataLen))
+    {
+        WARN("error waitResponse");
+        _data = WL_FAILURE;
+    }
+    SpiDrv::spiSlaveDeselect();
+    return _data;
+}
+
 int8_t WiFiDrv::renameFile(const char * old_file_name, uint8_t const old_file_name_len, const char * new_file_name, uint8_t const new_file_name_len)
 {
 	WAIT_FOR_SLAVE_SELECT();

src/utility/wifi_drv.h

@@ -294,6 +294,7 @@ class WiFiDrv
     static void analogWrite(uint8_t pin, uint8_t value);
 
     static int8_t downloadFile(const char* url, uint8_t url_len, const char *filename, uint8_t filename_len);
+    static int8_t downloadOTA(const char* url, uint8_t url_len);
     static int8_t renameFile(const char * old_file_name, uint8_t const old_file_name_len, const char * new_file_name, uint8_t const new_file_name_len);
 
     static int8_t fileOperation(uint8_t operation, const char *filename, uint8_t filename_len, uint32_t offset, uint8_t* buffer, uint32_t len);

src/utility/wifi_spi.h

@@ -111,6 +111,7 @@ enum {
     DOWNLOAD_FILE		= 0x64,
     APPLY_OTA_COMMAND	= 0x65,
 	RENAME_FILE			= 0x66,
+	DOWNLOAD_OTA		= 0x67,
 };