Mike Moore / mmSPI

SPI library used to communicate with an altera development board attached to four zigbee-header pins.

mmSPI.h@31:ea7b25e494b5, 2013-08-25 (annotated)

Committer:
gatedClock
Date:
Sun Aug 25 20:12:32 2013 +0000
Revision:
31:ea7b25e494b5
Parent:
30:331c7c7d8bc1
Child:
32:5a5d9525c6c4
this is working with python 'run'.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gatedClock 2:bebcf53b72dc 1 #ifndef mmSPI_H // include guard.
gatedClock 2:bebcf53b72dc 2 #define mmSPI_H // include guard.
gatedClock 0:fb42c5acf810 3 /*----------------------------------------------//------------------------------
gatedClock 0:fb42c5acf810 4 student : m-moore
gatedClock 0:fb42c5acf810 5 class : external SPI interface
gatedClock 0:fb42c5acf810 6 directory : mmSPI
gatedClock 0:fb42c5acf810 7 file : mmSPI.h
gatedClock 1:15706d15d123 8 ----description---------------------------------//------------------------------
gatedClock 1:15706d15d123 9 ----notes---------------------------------------//------------------------------
gatedClock 1:15706d15d123 10 1. the SPI interface pins are routed to the zigbee header.
gatedClock 0:fb42c5acf810 11 ------------------------------------------------//----------------------------*/
gatedClock 0:fb42c5acf810 12 #include "mbed.h" // standard mbed.org class.
gatedClock 15:d6cc57c4e23d 13 #include "C12832_lcd.h" // LCD.
gatedClock 1:15706d15d123 14 //---defines------------------------------------//------------------------------
gatedClock 8:e2d8bbc3e659 15 #define mmSPI_MOSI p29 // SPI interface pin.
gatedClock 8:e2d8bbc3e659 16 #define mmSPI_MISO p30 // SPI interface pin.
gatedClock 8:e2d8bbc3e659 17 #define mmSPI_SCLK p9 // SPI interface pin.
gatedClock 8:e2d8bbc3e659 18 #define mmCPU_CLK p10 // soft CPU system clock.
gatedClock 0:fb42c5acf810 19 /*----------------------------------------------//------------------------------
gatedClock 0:fb42c5acf810 20 ------------------------------------------------//----------------------------*/
gatedClock 2:bebcf53b72dc 21
gatedClock 0:fb42c5acf810 22 //==============================================//==============================
gatedClock 0:fb42c5acf810 23 class mmSPI
gatedClock 0:fb42c5acf810 24 {
gatedClock 0:fb42c5acf810 25 public:
gatedClock 0:fb42c5acf810 26 mmSPI(); // constructor.
gatedClock 0:fb42c5acf810 27 ~mmSPI(); // destructor.
gatedClock 3:de99451ab3c0 28 void allocations(); // object allocations.
gatedClock 24:d3b8c68f41f2 29 void setSPIfrequency (float); // initializations.
gatedClock 24:d3b8c68f41f2 30 void setSendBuffer (char * pcSendBuffer);
gatedClock 24:d3b8c68f41f2 31 void setReceiveBuffer(char * pcReceiveBuffer);
gatedClock 24:d3b8c68f41f2 32 void setNumberOfBytes(int dNumberOfBytes);
gatedClock 21:e90dd0f8aaa1 33
gatedClock 31:ea7b25e494b5 34 // SPI transceive loop.
gatedClock 31:ea7b25e494b5 35 void transceive_vector(char cPreCPU, char cPreSPI, char cScan, char cPostCPU);
gatedClock 16:0e422fd263c6 36
gatedClock 24:d3b8c68f41f2 37 // write/read CPU registers.
gatedClock 23:dbd89a56716d 38 void write_register(char cRegister, char cValue);
gatedClock 24:d3b8c68f41f2 39 char read_register (char cRegister);
gatedClock 24:d3b8c68f41f2 40 // write/read CPU main-memory.
gatedClock 24:d3b8c68f41f2 41 void write_memory(char cHData, char cLdata, char cAddress);
gatedClock 24:d3b8c68f41f2 42 unsigned int read_memory (char cAddress);
gatedClock 22:7524dee5c753 43
gatedClock 30:331c7c7d8bc1 44 void step(); // step the CPU.
gatedClock 30:331c7c7d8bc1 45
gatedClock 24:d3b8c68f41f2 46 void clear_transmit_vector(); // fill with 0.
gatedClock 24:d3b8c68f41f2 47
gatedClock 0:fb42c5acf810 48 private:
gatedClock 2:bebcf53b72dc 49
gatedClock 3:de99451ab3c0 50 DigitalOut * pMOSI; // SPI pin.
gatedClock 3:de99451ab3c0 51 DigitalOut * pMISO; // SPI pin.
gatedClock 3:de99451ab3c0 52 DigitalOut * pSCLK; // SPI pin.
gatedClock 8:e2d8bbc3e659 53 DigitalOut * pCPUclk; // soft cpu clock.
gatedClock 22:7524dee5c753 54 char * pcSend; // SPI transmit vector.
gatedClock 22:7524dee5c753 55 char * pcReceive; // SPI receive vector.
gatedClock 4:aa1fe8707bef 56 float fSPIfreq; // SPI clock frequency.
gatedClock 4:aa1fe8707bef 57 float fSPIquarterP; // SPI quarter period.
gatedClock 22:7524dee5c753 58 int dNumBytes; // number of SPI bytes.
gatedClock 12:a1b7ce9c1d64 59 int dLoop01; // loop index.
gatedClock 12:a1b7ce9c1d64 60 int dLoop02; // loop index.
gatedClock 0:fb42c5acf810 61 };
gatedClock 2:bebcf53b72dc 62 //----------------------------------------------//------------------------------
gatedClock 2:bebcf53b72dc 63 #endif // include guard.