STM32F4DISCOVERY i COOCOX pierwsze kroki miganie ledami

Kod: Zaznacz cały

 #define HWREG(x)         (*((volatile unsigned long *)(x))) 
  #define RCC             0x40023800 
  #define RCC_AHB1ENR     (RCC + 0x30) 
  #define GPIOA             0x40020000 
  #define GPIOA_IDR        (GPIOA + 0x10) 
  #define GPIOD            0x40020c00 
  #define GPIOD_MODER     (GPIOD + 0x0) 
  #define GPIOD_BSRR      (GPIOD + 0x18) 

  #define STACK_TOP 0x20002000                                        /* To może poruszać się całkiem szybko! */

Kod: Zaznacz cały

/* missing type */ 
 typedef unsigned int uint32_t; 


 /* hardware configuration */ 
 #define GPIOD 0x40020C00              /* port D */ 
 #define GPIOD_MODER (GPIOD + 0x00)    /* port mode register */ 
 #define LED_PORT_ODR (GPIOD + 0x14)   /* port output data register */ 
 #define LED_GREEN (1 << 12)           /* port D, pin 12 */ 
 #define LED_ORANGE (1 << 13)          /* port D, pin 13 */ 
 #define LED_RED (1 << 14)             /* port D, pin 14 */ 
 #define LED_BLUE (1 << 15)            /* port D, pin 15 */ 

 void _tmain(void) { 
     main(); 
 } 
 static inline void setup_leds(void) 
 { 
   *(volatile uint32_t*)GPIOD_MODER |= (1 << (12 * 2)) | (1 << (13 * 2)) | 
       (1 << (13 * 2)) | (1 << (14 * 2)) | (1 << (15 * 2)); 
 } 


 static inline void switch_leds_on(void) 
 { 
   *(volatile uint32_t*)LED_PORT_ODR = LED_BLUE | LED_GREEN | LED_ORANGE | LED_RED; 
 } 

 static inline void switch_leds_off(void) 
 { 
   *(volatile uint32_t*)LED_PORT_ODR = 0; 
 } 

 #define delay()                                    \ 
 do {                                            \ 
   register unsigned int i;                        \ 
   for (i = 0; i < 1000000; ++i)                    \ 
     __asm__ __volatile__ ("nop\n\t":::"memory");\ 
 } while (0) 

 /* static void __attribute__((naked)) __attribute__((used)) main(void) */ 
 void main(void) 
 { 
   setup_leds(); 

   while (1) 
   { 
     switch_leds_on(); 
     delay(); 
     switch_leds_off(); 
     delay(); 
   } 
 } 

Kod: Zaznacz cały

0x4004 0000 - 0x4007 FFFF USB OTG HS
0x4002 9400 - 0x4003 FFFF Reserved
0x4002 9000 - 0x4002 93FF
0x4002 8C00 - 0x4002 8FFF
0x4002 8800 - 0x4002 8BFF ETHERNET MAC
0x4002 8400 - 0x4002 87FF
0x4002 8000 - 0x4002 83FF
0x4002 6800 - 0x4002 7FFF 0x4002 6400 - 0x4002 67FF DMA2
0x4002 6000 - 0x4002 63FF DMA1
0X4002 5000 - 0X4002 5FFF Reserved
0x4002 4000 - 0x4002 4FFF 
0x4002 3C00 - 0x4002 3FFF Flash interface register
0x4002 3800 - 0x4002 3BFF RCC
0X4002 3400 - 0X4002 37FF Reserved
0x4002 3000 - 0x4002 33FF CRC
0x4002 2400 - 0x4002 2FFF Reserved
0x4002 2000 - 0x4002 23FF GPIOI
0x4002 1C00 - 0x4002 1FFF GPIOH
0x4002 1800 - 0x4002 1BFF GPIOG
0x4002 1400 - 0x4002 17FF GPIOF
0x4002 1000 - 0x4002 13FF GPIOE
0X4002 0C00 - 0x4002 0FFF GPIOD
0x4002 0800 - 0x4002 0BFF GPIOC
0x4002 0400 - 0x4002 07FF GPIOB
0x4002 0000 - 0x4002 03FF GPIOA
0x4001 5800- 0x4001 FFFF Reserved

Kod: Zaznacz cały

mark@hpecik:~$ cd ARM
mark@hpecik:~/ARM$ mkdir libopencm3
mark@hpecik:~/ARM$ cd libopencm3/
mark@hpecik:~/ARM/libopencm3$  git clone git://github.com/libopencm3/libopencm3.git
Cloning into 'libopencm3'...
remote: Counting objects: 8530, done.
remote: Compressing objects: 100% (2760/2760), done.
remote: Total 8530 (delta 5493), reused 8452 (delta 5438) 
Receiving objects: 100% (8530/8530), 1.34 MiB | 850 KiB/s, done.
Resolving deltas: 100% (5493/5493), done.
mark@hpecik:~/ARM/libopencm3$ cd libopencm3/
mark@hpecik:~/ARM/libopencm3/libopencm3$ make
  BUILD   lib/stm32/f1
  CP      libopencm3_stm32f1.ld
  CC      vector.o
  CC      rcc.o
....
  BUILD   examples/lpc43xx/hackrf-jellybean/ssp
  BUILD   examples/lpc43xx/hackrf-jellybean/systick
  BUILD   examples/lm3s/lm3s3748-evb/miniblink

Kod: Zaznacz cały

#include <libopencm3/stm32/f4/rcc.h> 
#include <libopencm3/stm32/f4/gpio.h> 

/* Set STM32 to 168 MHz. */
void clock_setup(void) 
{ 
	rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]); 

	/* Enable GPIOD clock. */
	rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN); 
} 

void gpio_setup(void) 
{ 
	/* Set GPIO12-15 (in GPIO port D) to 'output push-pull'. */
	gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
			GPIO_PUPD_NONE, GPIO12 | GPIO13 | GPIO14 | GPIO15); 
} 

int main(void) 
{ 
	int i; 

	clock_setup(); 
	gpio_setup(); 

	/* Set two LEDs for wigwag effect when toggling. */
	gpio_set(GPIOD, GPIO12 | GPIO14); 

	/* Blink the LEDs (PD12, PD13, PD14 and PD15) on the board. */
	while (1) { 
		/* Toggle LEDs. */
		gpio_toggle(GPIOD, GPIO12 | GPIO13 | GPIO14 | GPIO15); 
		for (i = 0; i < 6000000; i++) /* Wait a bit. */
			__asm__("nop"); 
	} 

	return 0; 
}