/*********************************************************************************************************//**
* @brief Period_Reload program,the example main funtion.
* @retval None
***********************************************************************************************************/
void Period_Reload(void)
{
NVIC_Configuration(); /* NVIC configuration */
CKCU_Configuration(); /* System Related configuration */
USART_Configuration(); /* USART Related configuration */
SYSTICK_Configuration(); /* SYSTICK Related configuration */
LED_Configuration();
/* WatchDog configuration */
WDT_IntConfig(ENABLE); /* Enable WDT Interrupt */
WDT_SetPrescaler(WDT_PRESCALER_8); /* Set Prescaler Value as 2 */
WDT_SetReloadValue(0xEFF); /* Set Reload Value as 0xEFF */
WDT_Restart(); /* Reload Counter as WDTV Value */
WDT_SetDeltaValue(0xA00); /* Set Delta Value as 0xA00 */
WDT_ProtectCmd(ENABLE); /* Enable Protection */
//printf("\n\rWDT Period Reload Starts...\n\r");
//printf("The Program Is Still Working If LED3 Keep Flashing\n\r");
/* Enable the SYSTICK Counter */
SYSTICK_CounterCmd(SYSTICK_COUNTER_ENABLE);
while(1);
}
void SysTick_Handler(void)
{
/* Reload Counter as WDTV Value */
WDT_Restart();
if(led_on){
GPIO_SetOutBits(GPIOA, GPIO_PIN_5);
led_on = 0;
}
else{
GPIO_ClearOutBits(GPIOA, GPIO_PIN_5);
led_on = 1;
}
}
// Send character through UART with no interrupts
static void TX(char c) {
while (!(UART->UART_SR & UART_SR_TXRDY)) { WDT_Restart(WDT); sw_barrier(); };
UART->UART_THR = c;
}
void HardFault_HandlerC(unsigned long *sp, unsigned long lr, unsigned long cause) {
static const char* causestr[] = {
"NMI","Hard","Mem","Bus","Usage","Debug","WDT","RSTC"
};
UnwindFrame btf;
// Dump report to the Programming port (interrupts are DISABLED)
TXBegin();
TX("\n\n## Software Fault detected ##\n");
TX("Cause: "); TX(causestr[cause]); TX('\n');
TX("R0 : "); TXHex(((unsigned long)sp[0])); TX('\n');
TX("R1 : "); TXHex(((unsigned long)sp[1])); TX('\n');
TX("R2 : "); TXHex(((unsigned long)sp[2])); TX('\n');
TX("R3 : "); TXHex(((unsigned long)sp[3])); TX('\n');
TX("R12 : "); TXHex(((unsigned long)sp[4])); TX('\n');
TX("LR : "); TXHex(((unsigned long)sp[5])); TX('\n');
TX("PC : "); TXHex(((unsigned long)sp[6])); TX('\n');
TX("PSR : "); TXHex(((unsigned long)sp[7])); TX('\n');
// Configurable Fault Status Register
// Consists of MMSR, BFSR and UFSR
TX("CFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED28)))); TX('\n');
// Hard Fault Status Register
TX("HFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED2C)))); TX('\n');
// Debug Fault Status Register
TX("DFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED30)))); TX('\n');
// Auxiliary Fault Status Register
TX("AFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED3C)))); TX('\n');
// Read the Fault Address Registers. These may not contain valid values.
// Check BFARVALID/MMARVALID to see if they are valid values
// MemManage Fault Address Register
TX("MMAR : "); TXHex((*((volatile unsigned long *)(0xE000ED34)))); TX('\n');
// Bus Fault Address Register
TX("BFAR : "); TXHex((*((volatile unsigned long *)(0xE000ED38)))); TX('\n');
TX("ExcLR: "); TXHex(lr); TX('\n');
TX("ExcSP: "); TXHex((unsigned long)sp); TX('\n');
btf.sp = ((unsigned long)sp) + 8*4; // The original stack pointer
btf.fp = btf.sp;
btf.lr = ((unsigned long)sp[5]);
btf.pc = ((unsigned long)sp[6]) | 1; // Force Thumb, as CORTEX only support it
// Perform a backtrace
TX("\nBacktrace:\n\n");
int ctr = 0;
UnwindStart(&btf, &UnwCallbacks, &ctr);
// Disable all NVIC interrupts
NVIC->ICER[0] = 0xFFFFFFFF;
NVIC->ICER[1] = 0xFFFFFFFF;
// Relocate VTOR table to default position
SCB->VTOR = 0;
// Disable USB
otg_disable();
// Restart watchdog
WDT_Restart(WDT);
// Reset controller
NVIC_SystemReset();
while(1) { WDT_Restart(WDT); }
}
/// reset watchdog. MUST be called every 1s after init or avr will reset.
void watchdog_reset()
{
WDT_Restart(WDT);
}
void watchdogReset(void)
{
WDT_Restart (WDT);
}
void WATCHDOG_RESET() {
WDT_Restart(WDT);
}
