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27 lines
534 B
C
27 lines
534 B
C
#ifndef PRIV_GPIO_H_
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#define PRIV_GPIO_H_
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#define GPIO_MODE 0
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#define GPIO_TYPE 1
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#define GPIO_PUPD 2
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#define GPIO_SPEED 3
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#define GPIO_OUT 4
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void gpio(uint32_t call, uint32_t port, uint32_t pin, uint32_t value)
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{
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register uint32_t r0 asm("r0") = call;
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register uint32_t r1 asm("r1") = port;
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register uint32_t r2 asm("r2") = pin;
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register uint32_t r3 asm("r3") = value;
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asm("\
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mov r0, %0; \
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mov r1, %1; \
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mov r2, %2; \
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mov r3, %3; \
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svc 1; \
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" :: "r" (r0), "r" (r1), "r" (r2), "r" (r3));
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}
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#endif // PRIV_GPIO_H_
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