void PWMC1_InterruptOnFault(void)
{
if (getRegBits(PWM_FSTS, (0x01 << 0x00))) {
setRegBits(PWM_FSTS, (0x01 << 0x00)); /* Reset interrupt request flag */
PWMC1_OnFault0(); /* Invoke user event */
}
}
/**
* This method reads a byte from the SPI bus
* @param Chr is the read byte
* @return ERR_OK always
***************************************************************************/
byte SPI1_RecvChar(byte *Chr)
{
int i=0;
byte ToRead=0;
*Chr=0;
//SCLK
setRegBits(GPIO_E_DR,0x10);
wait(4);
for(i=7;i>=0;i--)
{
//SCLK
clrRegBits(GPIO_E_DR,0x10);
wait(4);
ToRead= getRegBits(GPIO_E_DR,0x40);
wait(1);
*Chr |=(ToRead & 1)<<i;
//SCLK
setRegBits(GPIO_E_DR,0x10);
wait(4);
}
wait(4);
//SCLK
setRegBits(GPIO_E_DR,0x10);
}
/*****************************************************************************
* void main(void)
*
* Main application.
*
* In: n/a
*
* Out: n/a
*****************************************************************************/
void main(void)
{
UInt16 state;
char *temp_ptr;
extern word _vba;
uint8_t sw0, sw1;
INTC_VBA = ((word)&_vba) >> (21-INTC_VBA_BITS); /* Set Vector Base Address */
/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
PE_low_level_init();
/*** End of Processor Expert internal initialization. ***/
/*StartDelay = pmem_read((unsigned int *)BOOT_START_DELAY_PLACE) & 0x00FF;
if(!StartDelay) bootExit();
else bootTimerInit();*/
/* Write your code here */
GPIO_A_PER &= ~GPIO_A_PER_PE0_MASK; // set to GPIO mode
GPIO_A_PER &= ~GPIO_A_PER_PE1_MASK;
GPIO_A_DDR |= GPIO_A_DDR_DD0_MASK; // set as output
GPIO_A_DDR |= GPIO_A_DDR_DD1_MASK;
GPIO_A_DR &= ~GPIO_A_DR_D0_MASK; // set low
GPIO_A_DR &= ~GPIO_A_DR_D1_MASK;
Cpu_Delay100US(5000); // power-up delay
// Initialize R0,R1,M01, and N for circular buffer (including shadows)
asm {
swap shadows ;// Switch to shadow registers
moveu.w #(RX_DATA_SIZE-1),M01 ;// Set buffer size
moveu.w #rx_data,R0 ;// Set starting address
moveu.w #QSCI_STAT,R1 ;// Use R1 for SCI status register
moveu.w #0,N ;// N is unused
swap shadows ;// Switch back to normal registers
}
// with DEFCON 17, we used a timer to keep the badge in bootloader mode on power up for 10 seconds
// for DEFCON 18, the bootloader mode is only enabled if both buttons are held down on power up
// otherwise it jumps directly to the user application. no timer necessary, so that code is commented out
// check buttons
GPIO_C_PUR |= GPIO_C_PUR_PU0_MASK; // enable pull-up
GPIO_C_PUR |= GPIO_C_PUR_PU1_MASK;
GPIO_C_DDR &= ~GPIO_C_DDR_DD0_MASK; // set as input
GPIO_C_DDR &= ~GPIO_C_DDR_DD1_MASK;
GPIO_C_PER &= ~GPIO_C_PER_PE0_MASK; // set to GPIO mode
GPIO_C_PER &= ~GPIO_C_PER_PE1_MASK;
Cpu_Delay100US(1000); // setup delay
#define SW0_PIN_MASK ((byte)1) /* Pin mask */
#define SW1_PIN_MASK ((byte)2) /* Pin mask */
sw0 = !((bool)(getRegBits(GPIO_C_RAWDATA,SW0_PIN_MASK)));
sw1 = !((bool)(getRegBits(GPIO_C_RAWDATA,SW1_PIN_MASK)));
if (sw0 || sw1) // one or more buttons has been pressed
{
Cpu_Delay100US(1000); // give the user time to press both buttons (also serves as 100mS debounce)
sw0 = !((bool)(getRegBits(GPIO_C_RAWDATA,SW0_PIN_MASK)));
sw1 = !((bool)(getRegBits(GPIO_C_RAWDATA,SW1_PIN_MASK)));
}
if (sw0 && sw1) // if both buttons have been pressed, enter bootloader
{
// Turn on LEDs so the user knows we're here
GPIO_A_DR |= GPIO_A_DR_D0_MASK; // set high
GPIO_A_DR |= GPIO_A_DR_D1_MASK;
// Initialize globals
mem_init(rx_data, NULL, RX_DATA_SIZE);
data_out = data_in = rx_data;
state = INITIAL_STATE;
temp_ptr = rx_data;
// Disable protection
setReg(FM_PROT,BOOT_PROT_VALUE);
// Output banner
sci_tx(&StrCopyright[0]);
// Now it is safe to enable interrupts
Cpu_EnableInt();
do {
// State: Initial State
if (state == INITIAL_STATE) {
status = 0;
sci_tx(&StrWaitingSrec[0]);
sci_tx_char(XON);
state = WAIT_FOR_S;
}
if (data_in != temp_ptr) {
//Timer_Disable();
// State: Wait for Header "S"
if (state == WAIT_FOR_S) {
temp_ptr = data_out;
if (get_char(&temp_ptr) == 'S') { state = WAIT_FOR_0; }
else { get_char(&data_out); }
}
// State: Wait for Header "0"
else if (state == WAIT_FOR_0) {
if (get_char(&temp_ptr) == '0') { state = WAIT_FOR_EOL; }
else {
get_char(&data_out);
state = WAIT_FOR_S;
}
}
// State: Wait for EOL
else if (state == WAIT_FOR_EOL) {
if (get_char(&temp_ptr) == '\r') {
if (!(status & TX_XOFF)) {
sci_tx_char(XOFF);
status |= TX_XOFF;
}
srec_decode();
temp_ptr = data_out;
}
}
}
else {
if (status & TX_XOFF) {
sci_tx_char(XON);
status &= ~TX_XOFF;
}
}
// State: Error
if (status & DOWNLOAD_ERROR) {
sci_tx(StrErr);
sci_tx(int_to_string(status));
state = INITIAL_STATE;
sci_tx(StrNewLine);
}
//bootTimerCheck();
} while (status != DOWNLOAD_OK);
sci_tx(StrNewLine);
sci_tx(&StrLoaded[0]);
}
bootExit();
}