- optimize SPI usage 148% write speed (24kB/s -> 37kB/s) and 127% read speed (121kB/s -> 155kB/s) at 8MHz - add clock frequency as parameter for begin(csPin, frequency) - SD @80MHz write: 84kB/s read: 231kB/s SPI add functions: - void write32(uint32_t data); - void write32(uint32_t data, bool msb); - void transferBytes(uint8_t * out, uint8_t * in, uint32_t size); Adafruit_ILI9341: - code clean
SD Library for Arduino
The SD library allows for reading from and writing to SD cards.
For more information about this library please visit us at http://arduino.cc/en/Reference/SD
License
Copyright (c) Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA