int main (void) { /* execution starts here */
#if 0
IOPIN=0x1;
ram_test1();
#endif
busyLoop(BUSY_LOOP_TIMES);
#if 0
printf ("Hello World\n"); /* the 'printf' function call */
#else
output_str("Hello World\n");
#endif
while (1) { /* An embedded program does not stop and */
#if 1
IOPIN=0x1;
busyLoop(BUSY_LOOP_TIMES);
IOPIN=0x0;
busyLoop(BUSY_LOOP_TIMES);
/* ... */ /* never returns. We use an endless loop. */
#endif
} /* Replace the dots (...) with your own code. */
}
int init_led(void)
{
//init_led();
GPIO_InitTypeDef GPIO_InitStructure;
#if 0
/* Enable GPIO C clock. */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
#endif
/* GPIOD Periph clock enable */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
/* Configure PD12, PD13, PD14 and PD15 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
#if 0
/* Set the LED pin state such that the LED is off. The LED is connected
* between power and the microcontroller pin, which makes it turn on when
* the pin is low.
*/
GPIO_WriteBit(GPIOC,GPIO_Pin_12,Bit_SET);
/* Configure the LED pin as push-pull output. */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
while(1) {
GPIOC->BRR = 0x00001000;
busyLoop(500000);
GPIOC->BSRR = 0x00001000;
busyLoop(500000);
}
#endif
GPIO_ResetBits(GPIOD, GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15);
}
