
White Wizard SPI Chip Select test program. I changed chip select signal timing.
Diff: wwChipSelect.cpp
- Revision:
- 1:048ae028f72d
- Parent:
- 0:1d2148b42390
- Child:
- 2:5312f16c3ee8
--- a/wwChipSelect.cpp Mon Jul 25 10:00:33 2011 +0000 +++ b/wwChipSelect.cpp Mon Jul 25 10:01:36 2011 +0000 @@ -1,42 +1,42 @@ -//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(20); - - 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); - -} - - +//Nest Egg Inc. +//http://wizard.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(20); + + 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); + +} + +