/******************************************************************************
* @brief initializing spi settings
*
*****************************************************************************/
void init(void)
{
/* Enabling clock to USART 1 */
CMU_ClockEnable(cmuClock_USART1, true);
CMU_ClockEnable(cmuClock_GPIO, true);
/* Configure LED_PORT pin LED_PIN (User LED) as push/pull outputs */
GPIO_PinModeSet(LED_PORT, /* Port */
LED_PIN, /* Pin */
gpioModePushPull, /* Mode */
0 ); /* Output value */
/* Configure LED_PORT pin LED_PIN (User LED) as push/pull outputs */
GPIO_PinModeSet(gpioPortD, /* Port */
3, /* Pin */
gpioModePushPull, /* Mode */
0 ); /* Output value */
/* Configure LED_PORT pin LED_PIN (User LED) as push/pull outputs */
GPIO_PinModeSet(gpioPortF, /* Port */
6, /* Pin */
gpioModePushPull, /* Mode */
0 ); /* Output value */
/* Configure LED_PORT pin LED_PIN (User LED) as push/pull outputs */
GPIO_PinModeSet(gpioPortB, /* Port */
12, /* Pin */
gpioModePushPull, /* Mode */
0 ); /* Output value */
/* Setup UART */
SPI_setup(USART1_NUM, GPIO_POS1, true);
}
// Setup
inline void LCD_setup()
{
// Register Scan CLI dictionary
CLI_registerDictionary( lcdCLIDict, lcdCLIDictName );
// Initialize SPI
SPI_setup();
// Setup Register Control Signal (A0)
// Start in display register mode (1)
GPIOC_PDDR |= (1<<7);
PORTC_PCR7 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOC_PSOR |= (1<<7);
// Setup LCD Reset pin (RST)
// 0 - Reset, 1 - Normal Operation
// Start in normal mode (1)
GPIOC_PDDR |= (1<<8);
PORTC_PCR8 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOC_PSOR |= (1<<8);
// Run LCD intialization sequence
LCD_initialize();
}
void StoredFilter_Start(void)
{
Leds_SetLeds(0x4);
CMU_ClockEnable(cmuClock_USART2, true);
CMU_ClockEnable(cmuClock_GPIO, true);
SPI_setup(2, 0, true);
setupMEM();
setupFPGA();
setupSD();
done = false;
setupTimer();
FPGA_Enable();
while(1) {
if (done)
break;
}
FPGA_Disable();
TIMER_Enable( TIMER0, false );
TIMER_Reset( TIMER0 );
FPGADriver_Destroy();
SDDriver_Finalize();
MEM_Destroy();
}
/**************************************************************************//**
* @brief Sets/resets the ChipSelect of the SPI
*
* @param[in] value if true CS will be set, and reseted otherwise
*****************************************************************************/
void SPI_SetChipSelect(bool value)
{
if (value)
{
SPI_setup();
/* Enable chip select */
ClrOutput(SDF_CS);
}
else
{
SPI_close();
/* Disable chip select */
SetOutput(SDF_CS);
}
}
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
P2DIR = 0x00;
adc_setup();
SPI_setup();
int count = 0;
volatile int freq = adc_value();
while(1) {
if (count == 24) {
freq = adc_value();
count = 0;
}
count++;
toggle_waves(freq);
}
return 0;
}
// Setup
inline void LCD_setup()
{
// Register Scan CLI dictionary
CLI_registerDictionary( lcdCLIDict, lcdCLIDictName );
// Initialize SPI
SPI_setup();
// Setup Register Control Signal (A0)
// Start in display register mode (1)
GPIOC_PDDR |= (1<<7);
PORTC_PCR7 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOC_PSOR |= (1<<7);
// Setup LCD Reset pin (RST)
// 0 - Reset, 1 - Normal Operation
// Start in normal mode (1)
GPIOC_PDDR |= (1<<8);
PORTC_PCR8 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(1);
GPIOC_PSOR |= (1<<8);
// Run LCD intialization sequence
LCD_initialize();
// Write default image to LCD
for ( uint8_t page = 0; page < LCD_TOTAL_VISIBLE_PAGES; page++ )
LCD_writeDisplayReg( page, (uint8_t*)&STLcdDefaultImage[page * LCD_PAGE_LEN], LCD_PAGE_LEN );
// Setup Backlight
SIM_SCGC6 |= SIM_SCGC6_FTM0;
FTM0_CNT = 0; // Reset counter
// PWM Period
// 16-bit maximum
FTM0_MOD = 0xFFFF;
// Set FTM to PWM output - Edge Aligned, Low-true pulses
FTM0_C0SC = 0x24; // MSnB:MSnA = 10, ELSnB:ELSnA = 01
FTM0_C1SC = 0x24;
FTM0_C2SC = 0x24;
// Base FTM clock selection (72 MHz system clock)
// @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period
// Higher pre-scalar will use the most power (also look the best)
// Pre-scalar calculations
// 0 - 72 MHz -> 549 Hz
// 1 - 36 MHz -> 275 Hz
// 2 - 18 MHz -> 137 Hz
// 3 - 9 MHz -> 69 Hz (Slightly visible flicker)
// 4 - 4 500 kHz -> 34 Hz (Visible flickering)
// 5 - 2 250 kHz -> 17 Hz
// 6 - 1 125 kHz -> 9 Hz
// 7 - 562 500 Hz -> 4 Hz
// Using a higher pre-scalar without flicker is possible but FTM0_MOD will need to be reduced
// Which will reduce the brightness range
// System clock, /w prescalar setting
FTM0_SC = FTM_SC_CLKS(1) | FTM_SC_PS( STLcdBacklightPrescalar_define );
// Red
FTM0_C0V = STLcdBacklightRed_define;
PORTC_PCR1 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(4);
// Green
FTM0_C1V = STLcdBacklightGreen_define;
PORTC_PCR2 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(4);
// Blue
FTM0_C2V = STLcdBacklightBlue_define;
PORTC_PCR3 = PORT_PCR_SRE | PORT_PCR_DSE | PORT_PCR_MUX(4);
}
