//*****************************************************************************
//
// This function initializes the display task. It should be called from the
// application initialization code.
//
//*****************************************************************************
void
DisplayTaskInit(void *pvParam)
{
//
// Initialize the display driver and turn the display on.
//
Display96x16x1Init(false);
Display96x16x1DisplayOn();
}
//*****************************************************************************
//
//! Initialize the OLED display.
//!
//! \param bFast is a boolean that is \e true if the I2C interface should be
//! run at 400 kbps and \e false if it should be run at 100 kbps.
//!
//! This function initializes the I2C interface to the OLED display and
//! configures the SSD0303 or SSD1300 controller on the panel.
//!
//! \return None.
//
//*****************************************************************************
void
Display96x16x1Init(tBoolean bFast)
{
unsigned long ulIdx;
//
// The power supply for the OLED display comes from the motor power
// supply, which must be turned on. If the application is using the
// motor then this is taken care of when the motor driver is initialized.
// But if the motor driver is not used, then the motor power supply needs
// to be turned on here so the OLED works properly.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_5);
GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_5, GPIO_PIN_5);
//
// Enable the I2C and GPIO peripherals needed for the display.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_I2C1);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOG);
//
// Deassert the display controller reset signal (active low)
//
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_0);
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0, GPIO_PIN_0);
//
// Wait a short delay, then drive the pin low to reset the controller
//
SysCtlDelay(32);
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0, 0);
//
// Leave it is reset for a short delay, then drive it high to deassert
// reset. Then the controller should be out of reset.
//
SysCtlDelay(32);
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_0, GPIO_PIN_0);
//
// Configure the GPIO pins needed for the display as I2C
//
GPIOPinConfigure(GPIO_PG0_I2C1SCL);
GPIOPinConfigure(GPIO_PG1_I2C1SDA);
GPIOPinTypeI2C(GPIO_PORTG_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Reset the I2C1 peripheral.
//
SysCtlPeripheralReset(SYSCTL_PERIPH_I2C1);
//
// Initialize the I2C master.
//
I2CMasterInitExpClk(I2C1_MASTER_BASE, SysCtlClockGet(), bFast);
//
// Initialize the display controller. Loop through the initialization
// sequence doing a single I2C transfer for each command.
//
for(ulIdx = 0; ulIdx < sizeof(g_pucRITInit);
ulIdx += g_pucRITInit[ulIdx] + 1)
{
//
// Send this command.
//
Display96x16x1WriteFirst(g_pucRITInit[ulIdx + 1]);
Display96x16x1WriteArray(g_pucRITInit + ulIdx + 2,
g_pucRITInit[ulIdx] - 2);
Display96x16x1WriteFinal(g_pucRITInit[ulIdx + g_pucRITInit[ulIdx]]);
}
//
// Clear the frame buffer.
//
Display96x16x1Clear();
//
// Turn the display on.
//
Display96x16x1DisplayOn();
}
