#define PWM_PERIOD 0x2000 #define PWM_DUTY 0x2004 #define PWM_ENABLE 0x2008 #include "mmio.h" int main(void) { reg_write32(PWM_PERIOD, 20); reg_write32(PWM_DUTY, 5); reg_write32(PWM_ENABLE, 1); return 0; }