/**
@brief Enable SPI hardware and reset the connected device.
This function leaves the target in reset mode.
Use SET_RST() to un-reset the target device.
@param clockOption Clock option for spi clock speed
@param maintainReset True to maintain target reset state
@return actual set clock option: this may differ from
the option passed in if the passed in value is invalid
or if the slow clock jumper is connected */
uchar SPI_Connect(uchar clockOption, uchar maintainReset)
{
clockOption = SPI_SetSCKOption(clockOption);
/** Turn on the SPI pins */
EnableSPI();
/** Reset the device, and maintain reset */
SET_RST();
CLR_RST();
clockWait(1);
SET_RST();
/** Put the device back into reset mode if required */
if (maintainReset)
{
clockWait(1);
CLR_RST();
}
/** Enable the SPI Hardware (if needed) */
if (sw_delay_time == 0)
spiHWenable();
return clockOption;
}
uchar SPI_EnterProgrammingMode()
{
uchar check;
uchar count = 3; // Try to connect 3 times
for (; count > 0; count--)
{
SPI_Transmit(0xAC);
SPI_Transmit(0x53);
check = SPI_Transmit(0);
SPI_Transmit(0);
if (check == 0x53)
{
return 0; // Success! We're connected an in programming mode!
}
// If the connect command failed,
// the communication may be out of sync.
// Pulse reset (as per the datasheet) and
// try again.
SET_RST(); // Device into normal operation
clockWait(1);
CLR_RST(); // Device back into reset mode
clockWait(63); // Wait 20 ms before sending another program enable command
}
return 1; /* error: device dosn't answer */
}
void ssd1306_init(void)
{
uint32_t i;
// init necessary io
// enable clocks for PORTA & PORTB
SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK;
SIM_SCGC5 |= SIM_SCGC5_PORTB_MASK;
// pin 13, B5 output for rst
PORTB_PCR5 = PORT_PCR_MUX(1); // gpio
GPIOB_PCOR = (1 << 5); // low initially
GPIOB_PDDR |= (1 << 5); // output mode
// pin 6, a6 output for dc
PORTA_PCR6 = PORT_PCR_MUX(1); // gpio
GPIOA_PCOR = (1 << 6); // low initially
GPIOA_PDDR |= (1 << 6); // output mode
// init spi0
// configure io pins for spi
// PTA5, 7, PTB0
PORTA_PCR5 = PORT_PCR_MUX(3); // CS
PORTA_PCR7 = PORT_PCR_MUX(3); // MOSI
PORTB_PCR0 = PORT_PCR_MUX(3); // SCK
// enable SPI0 module
SIM_SCGC4 |= SIM_SCGC4_SPI0_MASK;
// configure as master, cs output driven automatically, CPOL=1
SPI0_C1 |= (SPI_C1_MSTR_MASK | SPI_C1_SSOE_MASK | SPI_C1_CPOL_MASK);
SPI0_C2 |= SPI_C2_MODFEN_MASK;
// select clock divider- SPPR = 0, SPR = 0 (2)
SPI0_BR = SPI_BR_SPPR(0) | SPI_BR_SPR(3);
// turn on spi
SPI0_C1 |= SPI_C1_SPE_MASK;
// do some setup on the oled display
// wait a ms after 3.3v comes up on reset
delay_ms(10);
// reset low for 10ms
CLR_RST(); // low
delay_ms(10);
SET_RST(); // now high
// give it a few ms after reset goes high
delay_ms(5);
// now initialize display controller
// Init sequence for 128x64 OLED module
ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE
ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
ssd1306_command(0x80); // the suggested ratio 0x80
ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8
ssd1306_command(0x3F);
ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3
ssd1306_command(0x0); // no offset
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D
ssd1306_command(0x14); // internall VCC
ssd1306_command(SSD1306_MEMORYMODE); // 0x20
ssd1306_command(0x00); // 0x0 act like ks0108
ssd1306_command(SSD1306_SEGREMAP /*| 0x1*/);
ssd1306_command(SSD1306_COMSCANINC);
ssd1306_command(SSD1306_SETCOMPINS); // 0xDA
ssd1306_command(0x12);
ssd1306_command(SSD1306_SETCONTRAST); // 0x81
ssd1306_command(0xCF); // internal VCC
ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9
ssd1306_command(0xF1); // internal VCC
ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB
ssd1306_command(0x40);
ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4
ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6
ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel
// set display to noahs face
ssd1306_command(SSD1306_SETLOWCOLUMN | 0x0); // low col = 0
ssd1306_command(SSD1306_SETHIGHCOLUMN | 0x0); // hi col = 0
ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
for(i=0; i<SSD1306_SIZEOF_SCREENBUF; i++){
ssd1306_data(noahs_face[i]);
}
}
void initLcd(void)
{
CLR_RST();
SET_CS();
SET_DC();
delay_ms(5);
SET_RST();
delay_ms(5);
CLR_RST();
delay_ms(20);
SET_RST();
delay_ms(150);
_width = ILI9341_TFTWIDTH;
_height = ILI9341_TFTHEIGHT;
writeCommand(0xEF);
writeData(0x03);
writeData(0x80);
writeData(0x02);
writeCommand(0xCF);
writeData(0x00);
writeData(0XC1);
writeData(0X30);
writeCommand(0xED);
writeData(0x64);
writeData(0x03);
writeData(0X12);
writeData(0X81);
writeCommand(0xE8);
writeData(0x85);
writeData(0x00);
writeData(0x78);
writeCommand(0xCB);
writeData(0x39);
writeData(0x2C);
writeData(0x00);
writeData(0x34);
writeData(0x02);
writeCommand(0xF7);
writeData(0x20);
writeCommand(0xEA);
writeData(0x00);
writeData(0x00);
writeCommand(ILI9341_PWCTR1); //Power control
writeData(0x23); //VRH[5:0]
writeCommand(ILI9341_PWCTR2); //Power control
writeData(0x10); //SAP[2:0];BT[3:0]
writeCommand(ILI9341_VMCTR1); //VCM control
writeData(0x3e);
writeData(0x28);
writeCommand(ILI9341_VMCTR2); //VCM control2
writeData(0x86); //--
writeCommand(ILI9341_MADCTL); // Memory Access Control
writeData(ILI9341_MADCTL_MX | ILI9341_MADCTL_BGR);
writeCommand(ILI9341_PIXFMT);
writeData(0x55);
writeCommand(ILI9341_FRMCTR1);
writeData(0x00);
writeData(0x18);
writeCommand(ILI9341_DFUNCTR); // Display Function Control
writeData(0x08);
writeData(0x82);
writeData(0x27);
writeCommand(0xF2); // 3Gamma Function Disable
writeData(0x00);
writeCommand(ILI9341_GAMMASET); //Gamma curve selected
writeData(0x01);
writeCommand(ILI9341_GMCTRP1); //Set Gamma
writeData(0x0F);
writeData(0x31);
writeData(0x2B);
writeData(0x0C);
writeData(0x0E);
writeData(0x08);
writeData(0x4E);
writeData(0xF1);
writeData(0x37);
writeData(0x07);
writeData(0x10);
writeData(0x03);
writeData(0x0E);
writeData(0x09);
writeData(0x00);
writeCommand(ILI9341_GMCTRN1); //Set Gamma
writeData(0x00);
writeData(0x0E);
writeData(0x14);
writeData(0x03);
writeData(0x11);
writeData(0x07);
writeData(0x31);
writeData(0xC1);
writeData(0x48);
writeData(0x08);
writeData(0x0F);
writeData(0x0C);
writeData(0x31);
writeData(0x36);
writeData(0x0F);
writeCommand(ILI9341_SLPOUT); //Exit Sleep
delay_ms(120);
writeCommand(ILI9341_DISPON); //Display on
}
