GPEDS0
events = bcm2835_gpio_rd(pc, GPEDS0 + i * 4);
bcm2835_gpio_wr(pc, GPEDS0 + i * 4, BIT(offset));
events = bcm2835_gpio_rd(pc, GPEDS0 + bank * 4);
bcm2835_gpio_set_bit(pc, GPEDS0, gpio);
bcm2835_gpio_set_bit(pc, GPEDS0, gpio);