White Wizard micro SD Card module test program.You can use White Wizard SPI system easily! Details : http://wizard.nestegg.jp/sd.html
wwChipSelect.cpp
- Committer:
- halfpitch
- Date:
- 2011-08-31
- Revision:
- 1:731d34c1b57d
- Parent:
- 0:b8ab9a03a28d
File content as of revision 1:731d34c1b57d:
//Nest Egg Inc. //http://nestegg.jp/ //White Wizard Board SPI Chip Select Code //Auther : Yoshinari kou //2010/10/03 #include "wwChipSelect.h" wwChipSelect :: wwChipSelect(PinName cs): ChipSelect(cs){ } void wwChipSelect :: wwCSwrite(int ch){ //start ChipSelect.write(1); wait_us(30); ChipSelect.write(0); wait_us(26);//26 //A1 ChipSelect.write(0x01 & ch); wait_us(20);//46 //A2 ChipSelect.write((0x02 & ch)>>1); wait_us(20);//66 //A3 ChipSelect.write((0x04 & ch)>>2); wait_us(20);//86 //A4 ChipSelect.write((0x08 & ch)>>3); wait_us(20);//106 ChipSelect.write(1); wait_us(30); }