libraries/SPI/SPI.cpp
void SPIClass::writeBytes(uint8_t * data, uint32_t size) {
    while(size) {
        if(size > 64) {
            writeBytes_(data, 64);
            size -= 64;
            data += 64;
        } else {
            writeBytes_(data, size);
            size = 0;
        }
    }
}
/**
 * Note:
 *  data need to be aligned to 32Bit
 *  or you get an Fatal exception (9)
 * @param data uint8_t *
 * @param size uint32_t
 */
data need to be aligned to 32Bit
or you get an Fatal exception (9)
@param data uint8_t
@param size uint32_t
data need to be aligned to 32Bit or you get an Fatal exception ( 9 ) @param data uint8_t @param size uint32_t
void SPIClass::writeBytes(uint8_t * data, uint32_t size) {
    while(size) {
        if(size > 64) {
            writeBytes_(data, 64);
            size -= 64;
            data += 64;
        } else {
            writeBytes_(data, size);
            size = 0;
        }
    }
}
void SPIClass :: writeBytes ( uint8_t * data , uint32_t size ) { while ( size ) { if ( size > 64 ) { writeBytes_ ( data , 64 ) ; size -= 64 ; data += 64 ; } else { writeBytes_ ( data , size ) ; size = 0 ; } } }
Note:
  data need to be aligned to 32Bit
  or you get an Fatal exception (9)
 @param data uint8_t
 @param size uint32_t
Note : data need to be aligned to 32Bit or you get an Fatal exception ( 9 ) @param data uint8_t @param size uint32_t