/*
* Turns on one light and turns off remaing LEDs depending upon counter value
*/
void changestate(int counter)
{
switch(counter)
{
case 0 ://orange on
ledOrangeOn();
ledYellowOff();
ledGreenOff();
ledBlueOff();
break;
case 1 ://yellow on
ledOrangeOff();
ledYellowOn();
ledGreenOff();
ledBlueOff();
break;
case 2 ://green on
ledOrangeOff();
ledYellowOff();
ledGreenOn();
ledBlueOff();
break;
case 3 ://blue on
ledOrangeOff();
ledYellowOff();
ledGreenOff();
ledBlueOn();
break;
default:
break;
}
}
int main(void) {
int number_presses = 0;
/* Initialize all of the LEDs */
ledInitAll();
/* Initialize both of the pushbuttons */
pushbuttonInitAll();
/* initially orange LED should be on and all others should be off */
ledOrangeOn();
while(1) {
if (sw1In()) {
/* avoid contact bounce */
delay(DELAY_LIMIT);
number_presses++;
if (number_presses == 4) {
number_presses = 0;
}
if (number_presses == 0) {
ledOrangeOn();
} else {
ledOrangeOff();
}
if (number_presses == 1) {
ledYellowOn();
} else {
ledYellowOff();
}
if (number_presses == 2) {
ledGreenOn();
} else {
ledGreenOff();
}
if (number_presses == 3) {
ledBlueOn();
} else {
ledBlueOff();
}
/* wait until button released before checking if pushed again */
while(sw1In()) { ; }
}
}
return 0;
}
/*
* Implements write interface.
* Parameters:
* o void *fp - stream to read.
* o char c - Expects 1 to turn on led and 0 to turn off.
* Return : Number of bytes written
*/
int led_write(void *fp,char c)
{
struct led_stream* stream = (struct led_stream*)fp;
int val = c - '0';
if(val)
{
switch(stream->minor)
{
case ORANGE:
ledOrangeOn();
break;
case YELLOW:
ledYellowOn();
break;
case GREEN:
ledGreenOn();
break;
case BLUE:
ledBlueOn();
break;
default:
return 0;
}
}
else
{
switch(stream->minor)
{
case ORANGE:
ledOrangeOff();
break;
case YELLOW:
ledYellowOff();
break;
case GREEN:
ledGreenOff();
break;
case BLUE:
ledBlueOff();
break;
default:
return 0;
}
}
return 1;
}
/**
* Routine to initialize all of the LEDs
*
* Note: This procedure *does* enable the appropriate port clock
*/
void ledInitAll(void) {
/* Enable the clock for PORTA using the SIM_SCGC5 register (System Clock Gating
* Control Register 5) (See 12.2.13 on page 342 of the K70 Sub-Family Reference
* Manual, Rev. 2, Dec 2011) */
SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK;
/* Turn off the LEDs */
ledOrangeOff();
ledYellowOff();
ledGreenOff();
ledBlueOff();
/* Configure the LED ports */
ledOrangeConfig();
ledYellowConfig();
ledGreenConfig();
ledBlueConfig();
}
// intialization functions
void bootARM(void) {
// had to steal some code from the original SparkFun code because I don't
// understand it yet.
rprintf_devopen(putc_serial0); // Init rprintf
delay_ms(30); // wait for power to stabilize
// bring up SD / FAT *
if (! (sd_raw_init()) ) { rprintf("SD init error!\n"); }
if ( openroot() ) { rprintf("openroot error!\n"); }
// set up I/O pins *
//Setup the MP3 I/O Lines
IODIR0 |= MP3_XCS;
IODIR0 &= ~MP3_DREQ;
PINSEL1 |= 0x00000C00; // Set the MP3_DREQ Pin to be a capture pin
IODIR1 |= MP3_XDCS | MP3_GPIO0 | MP3_XRES;
//Setupt the FM Trans. Lines
IODIR1 |= FM_LA; // FM trans outputs (Leave SPI pins
IODIR1 |= FM_CS; // unconfigured for now)
//Setup the SD Card I/O Lines
IODIR0 |= SD_CS; // SD card outputs
//Setup the Accelerometer I/O Lines
IODIR0 |= (GS1 | GS2); // accelerometer outputs
// ensure ADC pins have ADC Functions selected
PINSEL0 |= (MMA_X_PINSEL | MMA_Y_PINSEL | MMA_Z_PINSEL);
IOCLR0 = (GS1 | GS2); // initialize acceleration to 1.5 G mode
//Setup the LCD I/O Lines
IODIR0 |= (LCD_RES | LCD_CS); // LCD Outputs
//Setup the LED Lines
IODIR0 |= (LED_BLU | LED_RED | LED_GRN);
ledBlueOff();
ledRedOff();
ledGrnOff();
//Setup the Buttons
IODIR1 &= (~SW_UP & ~SW_DWN & ~SW_MID); //Button Inputs
IODIR0 &= ~(1<<23); //Set the Vbus line as an input
//Setupt the Interrupts
VPBDIV = 1; // Set PCLK equal to the system clock
VICIntSelect = ~0x30; // Timer 0 AND TIMER 1 interrupt is an IRQ interrupt
VICIntEnable = 0x10; // Enable Timer 0 interrupts
// (don't start sending song data with Timer 1)
VICVectCntl0= 0x25; // Use slot 0 for timer 1 interrupt
VICVectAddr0 = (unsigned int)timer1ISR; // Set the address of ISR for slot 1
VICVectCntl1 = 0x24; // Use slot 1 for timer 0 interrupt
VICVectAddr1 = (unsigned int)timer0ISR; // Set the address of ISR for slot 1
//Configure Timer0
T0PR = 1500; // divide clock(60MHz) by 1500 for 40kHz PS
T0TCR |=0X01; // enable the clock
T0CTCR=0; // timer node
T0MCR=0x0003; // interrupt and reset timer on match
T0MR0=1000; // interrupt on 40Hz
//Configure Timer1
T1PR = 200; // divide clock by 300 for 40kHz PS
T1TCR |=0X01; // enable the clock
T1CTCR=0; // timer mode
T1CCR=0x0A00; // capture and interrupt on the
// rising edge of DREQ
//Setup the SPI Port
S0SPCCR = 64; // SCK = 1 MHz, counter > 8 and even
S0SPCR = 0x20; // Master, no interrupt enable, 8 bits
// set up MP3 decoder
vs1002Config(); // set up ARM <-> VS1002 communication
vs1002Reset(); // hardware reset
vs1002Init(); // initialization
return;
}
