Merge pull request #205 from ficeto/esp8266

Fix SPI Clocks for SD Library

Author: igrr

libraries/SD/src/utility/Sd2Card.cpp

@@ -270,11 +270,7 @@ uint8_t Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
   SPSR &= ~(1 << SPI2X);
 #else // USE_SPI_LIB
   SPI.begin();
-  #ifdef ESP8266
-  settings = SPISettings(SPI_CLOCK_DIV64, MSBFIRST, SPI_MODE0);
-  #else
   settings = SPISettings(250000, MSBFIRST, SPI_MODE0);
-  #endif
 #endif // USE_SPI_LIB
 #endif // SOFTWARE_SPI
 

libraries/SD/src/utility/Sd2Card.h

@@ -28,9 +28,9 @@
 
 #ifdef ESP8266
 #include "SPI.h"
-uint32_t const SPI_FULL_SPEED = SPI_CLOCK_DIV2;
-uint32_t const SPI_HALF_SPEED = SPI_CLOCK_DIV4;
-uint32_t const SPI_QUARTER_SPEED = SPI_CLOCK_DIV8;
+uint32_t const SPI_FULL_SPEED = 8000000;
+uint32_t const SPI_HALF_SPEED = 4000000;
+uint32_t const SPI_QUARTER_SPEED = 2000000;
 #else
 /** Set SCK to max rate of F_CPU/2. See Sd2Card::setSckRate(). */
 uint8_t const SPI_FULL_SPEED = 0;