kopia lustrzana https://github.com/stlink-org/stlink
28 wiersze
701 B
C
28 wiersze
701 B
C
typedef unsigned int uint32_t;
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#define GPIOC 0x40011000 // port C
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#define GPIOC_CRH (GPIOC + 0x04) // port configuration register high
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#define GPIOC_ODR (GPIOC + 0x0c) // port output data register
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#define LED_BLUE (1<<8) // pin 8
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#define LED_GREEN (1<<9) // pin 9
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#define delay() \
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do { \
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register unsigned int i; \
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for (i = 0; i < 1000000; ++i) \
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__asm__ __volatile__ ("nop\n\t":::"memory"); \
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} while (0)
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static void __attribute__((naked)) __attribute__((used)) main(void)
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{
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*(volatile uint32_t*)GPIOC_CRH = 0x44444411;
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while (1)
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{
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*(volatile uint32_t*)GPIOC_ODR = LED_BLUE | LED_GREEN;
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delay();
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*(volatile uint32_t*)GPIOC_ODR = 0;
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delay();
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}
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}
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