23 lines
468 B
C
23 lines
468 B
C
#define PWM_PERIOD 0x2000
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#define PWM_DUTY 0x2008
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#define PWM_ENABLE 0x2010
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static inline void write_reg(unsigned long addr, unsigned long data)
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{
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volatile unsigned long *ptr = (volatile unsigned long *) addr;
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*ptr = data;
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}
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static inline unsigned long read_reg(unsigned long addr)
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{
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volatile unsigned long *ptr = (volatile unsigned long *) addr;
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return *ptr;
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}
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int main(void)
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{
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write_reg(PWM_PERIOD, 20);
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write_reg(PWM_DUTY, 5);
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write_reg(PWM_ENABLE, 1);
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}
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