I am trying to Setup OLED 1309 OLED Controller using TMS320F28069M Launchpad , For that Purpose I am using Example_2806xSpi_FFDLB.c Which Containg the Following Code
#include "DSP28x_Project.h" // Device Headerfile and Examples Include File // // Function Prototypes // void spi_xmit(Uint16 a); void spi_fifo_init(void); void spi_init(void); void error(void); // // Main // void main(void) { Uint16 sdata; // send data Uint16 rdata; // received data // // Step 1. Initialize System Control: // PLL, WatchDog, enable Peripheral Clocks // This example function is found in the F2806x_SysCtrl.c file. // InitSysCtrl(); // // Step 2. Initalize GPIO: // This example function is found in the F2806x_Gpio.c file and // illustrates how to set the GPIO to it's default state. // //InitGpio(); // Skipped for this example // // Setup only the GP I/O only for SPI-A functionality // This function is found in F2806x_Spi.c // InitSpiaGpio(); // // Step 3. Clear all interrupts and initialize PIE vector table: // Disable CPU interrupts // DINT; // // Initialize PIE control registers to their default state. // The default state is all PIE interrupts disabled and flags // are cleared. // This function is found in the F2806x_PieCtrl.c file. // InitPieCtrl(); // // Disable CPU interrupts and clear all CPU interrupt flags // IER = 0x0000; IFR = 0x0000; // // Initialize the PIE vector table with pointers to the shell Interrupt // Service Routines (ISR). // This will populate the entire table, even if the interrupt // is not used in this example. This is useful for debug purposes. // The shell ISR routines are found in F2806x_DefaultIsr.c. // This function is found in F2806x_PieVect.c. // InitPieVectTable(); // // Step 4. Initialize all the Device Peripherals: // This function is found in F2806x_InitPeripherals.c // //InitPeripherals(); // Not required for this example spi_fifo_init(); // Initialize the Spi FIFO spi_init(); // init SPI // // Step 5. User specific code: // Interrupts are not used in this example. // sdata = 0x0000; for(;;) { // // Transmit data // spi_xmit(sdata); // // Wait until data is received // while(SpiaRegs.SPIFFRX.bit.RXFFST !=1) { } // // Check against sent data // rdata = SpiaRegs.SPIRXBUF; if(rdata != sdata) { error(); } sdata++; } } // // error - Step 7. Insert all local Interrupt Service Routines (ISRs) // and functions here // void error(void) { __asm(" ESTOP0"); // Test failed!! Stop! for (;;); } // // spi_init - // void spi_init() { SpiaRegs.SPICCR.all =0x000F; // Reset on, rising edge, 16-bit char bits // // Enable master mode, normal phase, enable talk, and SPI int disabled. // SpiaRegs.SPICTL.all =0x0006; SpiaRegs.SPIBRR =0x007F; SpiaRegs.SPICCR.all =0x009F; // Relinquish SPI from Reset SpiaRegs.SPIPRI.bit.FREE = 1; // Set so breakpoints don't disturb xmission } // // spi_xmit - // void spi_xmit(Uint16 a) { SpiaRegs.SPITXBUF=a; } // // spi_fifo_init - // void spi_fifo_init(void) { // // Initialize SPI FIFO registers // SpiaRegs.SPIFFTX.all=0xE040; SpiaRegs.SPIFFRX.all=0x2044; SpiaRegs.SPIFFCT.all=0x0; } // // End of File //
Now, the quest is how to set the SPI in 8 bit mode, I found some examples over the forums but nothing seems to be fruitful.