Collections of BERTL libraries
Diff: hl_bertl_portex.cpp
- Revision:
- 1:b924729b5734
diff -r 46115ad78747 -r b924729b5734 hl_bertl_portex.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hl_bertl_portex.cpp Mon Apr 18 10:07:53 2016 +0000 @@ -0,0 +1,102 @@ +#include "mbed.h" +#include "hl_bertl_portex.h" + +PortEx::PortEx() : + _i2c(p28,p27), _p6Event(p6) +{ + btns=btnEvent=0; + useISR = 1; +} + +void PortEx::Init() +{ + char cmd[4]; + _i2c.frequency(100000); + wait(0.01); + // Port0 Config Port0 Out Port1 In + cmd[0]=0x06; + cmd[1]=0x00; + cmd[2]=0xFF; + _i2c.write(DEV, cmd, 3, false); + SetLedPort(0); + _p6Event.fall(this, &PortEx::p6ISR); +} + +void PortEx::p6ISR() +{ + if( !useISR ) + return; + int16_t prev = btns; + ReadButtons(); + if( !btns ) + btns = prev; + else + btnEvent = 1; +} + +void PortEx::SetLedPort(uint8_t aBitPattern) +{ + char cmd[4]; + cmd[0]=2; + cmd[1]=~aBitPattern; + _i2c.write(DEV, cmd, 2, false); +} + +void PortEx::SetLeds(uint8_t aBitPattern) +{ + _currLeds |= aBitPattern; + SetLedPort(_currLeds); +} + +void PortEx::ToggleLeds(uint8_t aBitPattern) +{ + _currLeds ^= aBitPattern; + SetLedPort(_currLeds); +} + +void PortEx::ClearLeds() +{ + _currLeds=0; + SetLedPort(0); +} + + +void PortEx::ReadButtons() +{ + char cmd[4]; + cmd[0]=1; + _i2c.write(DEV, cmd, 1, true); + _i2c.read(DEV|1, cmd, 1, false); + btns = cmd[0]; +} + +void PortEx::WaitUntilButtonPressed() +{ + int prev = useISR; + useISR = 0; + btns = 0; + while(1) { + ReadButtons(); + if( btns ) + break; + wait(0.01); + } + btns=btnEvent=0; + useISR = prev; +} + +void PortEx::WaitUntilFrontButtonPressed() +{ + int prev = useISR; + useISR = 0; + btns = 0; + while(1) { + ReadButtons(); + if( IsAnyFrontButton() ) + break; + wait(0.01); + } + btns=btnEvent=0; + useISR = prev; +} +