bosko lekovic / Mbed OS IO_spi

IO spi

temp/IOgpiospi.cpp@7:4aa3dac73b66, 2021-03-21 (annotated)

Committer:
bosko001
Date:
Sun Mar 21 18:20:15 2021 +0100
Revision:
7:4aa3dac73b66
novi pocetak

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bosko001 7:4aa3dac73b66 1 #include "IOgpiospi.h"
bosko001 7:4aa3dac73b66 2
bosko001 7:4aa3dac73b66 3 #include "Pinovi.h"
bosko001 7:4aa3dac73b66 4 /*************************************************************************************************************************************** */
bosko001 7:4aa3dac73b66 5 // mosi = PTD6, miso = PTD7, clock = PTD5
bosko001 7:4aa3dac73b66 6
bosko001 7:4aa3dac73b66 7
bosko001 7:4aa3dac73b66 8
bosko001 7:4aa3dac73b66 9 C_gpioSpi::C_gpioSpi( /*PinName Mosi, PinName Miso, PinName spiClock*/)
bosko001 7:4aa3dac73b66 10 {
bosko001 7:4aa3dac73b66 11 p_MOSI = new DigitalIn( Mosi, PullUp);
bosko001 7:4aa3dac73b66 12 p_MISO = new DigitalOut( Miso, 1);
bosko001 7:4aa3dac73b66 13 p_SpiClock = new InterruptIn( SpiClock, PullUp);
bosko001 7:4aa3dac73b66 14
bosko001 7:4aa3dac73b66 15
bosko001 7:4aa3dac73b66 16
bosko001 7:4aa3dac73b66 17 bitCount = 0;
bosko001 7:4aa3dac73b66 18 p_SpiClock->fall( [this](){ spiClockCount_fun(); } );
bosko001 7:4aa3dac73b66 19 }
bosko001 7:4aa3dac73b66 20
bosko001 7:4aa3dac73b66 21 void C_gpioSpi::spi_monitor( void )
bosko001 7:4aa3dac73b66 22 {
bosko001 7:4aa3dac73b66 23 static char old_bit=0;
bosko001 7:4aa3dac73b66 24 if( old_bit && bitCount && (old_bit == bitCount) ) { bitCount=0;}
bosko001 7:4aa3dac73b66 25 old_bit = bitCount;
bosko001 7:4aa3dac73b66 26
bosko001 7:4aa3dac73b66 27 }
bosko001 7:4aa3dac73b66 28
bosko001 7:4aa3dac73b66 29 void C_gpioSpi::spiClockCount_fun(void)
bosko001 7:4aa3dac73b66 30 {
bosko001 7:4aa3dac73b66 31
bosko001 7:4aa3dac73b66 32 bitCount++;
bosko001 7:4aa3dac73b66 33
bosko001 7:4aa3dac73b66 34 readData <<= 1;
bosko001 7:4aa3dac73b66 35 if( p_MOSI->read() ) readData |= 1;
bosko001 7:4aa3dac73b66 36 else readData &= (~1);
bosko001 7:4aa3dac73b66 37
bosko001 7:4aa3dac73b66 38 if( writeData & 0x80 ) p_MISO->write(1);
bosko001 7:4aa3dac73b66 39 else p_MISO->write(0);
bosko001 7:4aa3dac73b66 40 writeData <<= 1;
bosko001 7:4aa3dac73b66 41
bosko001 7:4aa3dac73b66 42 if(bitCount>=8)
bosko001 7:4aa3dac73b66 43 {
bosko001 7:4aa3dac73b66 44 bitCount = 0;
bosko001 7:4aa3dac73b66 45 // if(transfer_fun) transfer_fun( &writeData, readData );
bosko001 7:4aa3dac73b66 46
bosko001 7:4aa3dac73b66 47
bosko001 7:4aa3dac73b66 48
bosko001 7:4aa3dac73b66 49 spiByteTransfer( &writeData, readData);
bosko001 7:4aa3dac73b66 50
bosko001 7:4aa3dac73b66 51 }
bosko001 7:4aa3dac73b66 52
bosko001 7:4aa3dac73b66 53 }
bosko001 7:4aa3dac73b66 54
bosko001 7:4aa3dac73b66 55
bosko001 7:4aa3dac73b66 56