main (int argc, char **argv)
{
int id;
setvbuf (stdout, NULL, _IOLBF, 0);
printf ("%s: starting...\n", progname);
// request I/O privity
ThreadCtl(_NTO_TCTL_IO, 0 );
// set up an event for the handler or the kernel to use to wake up
// this thread. Use whatever type of event and event handling you want
SIGEV_INTR_INIT( &int_event );
// either register an interrupt handler or the event
id = InterruptAttach(0, hdlr, NULL, 0, _NTO_INTR_FLAGS_TRK_MSK );
while (1) {
// block here waiting for the event
InterruptWait(0, NULL );
// if using a high frequency interrupt, don't print every interrupt
printf ("%s: we got an event after 1500 timer ticks and unblocked\n", progname);
}
}
static err_t gpio_init(Drive_Gpio *t)
{
Drive_Gpio *cthis = ( Drive_Gpio *)t ;
uint32_t tmp_reg = 0;
gpio_cfg *config = cthis->config;
int i = 0;
assert( config->intr_line < 2);
cthis->gpio_vbase = mmap_device_io( AM335X_GPIO_SIZE, GpioBase[ config->pin_group]);
#ifdef DEBUG_GPIO
TRACE_INFO("Drive Piling :%s-%s-%d \r\n", __FILE__, __func__, __LINE__);
TRACE_INFO("pin config 0x%04x \r\n", rd_pin_conf( config->pin_ctrl_off));
return EXIT_SUCCESS;
#else
if (cthis->gpio_vbase == MAP_DEVICE_FAILED)
{
return ERROR_T( gpio_init_mapio_fail);
}
gpioModuleConfig[ config->pin_group]();
GPIOModuleEnable( cthis->gpio_vbase);
//配置引脚方向为输入
tmp_reg = in32( cthis->gpio_vbase + GPIO_OE );
tmp_reg |= 1 << config->pin_number;
out32( cthis->gpio_vbase + GPIO_OE, tmp_reg );
//使能消抖
tmp_reg=in32( cthis->gpio_vbase + GPIO_DEBOUNCENABLE);
tmp_reg &=~( 1 << config->pin_number);
tmp_reg |= ( 1 << config->pin_number);
out32( cthis->gpio_vbase + GPIO_DEBOUNCENABLE, tmp_reg);
//消抖时间
out32( cthis->gpio_vbase + GPIO_DEBOUNCINGTIME, ( config->debou_time ));
//配置中断监测类型
for( i = 0; i < 4; i ++)
{
if( ( ( 1 << i) & config->intr_type) )
{
//使能该类型
tmp_reg = in32( cthis->gpio_vbase + GPIO_DETECT(i));
tmp_reg |= 1 << config->pin_number;
out32(cthis->gpio_vbase + GPIO_DETECT(i), tmp_reg);
}
else
{
//禁止其他类型
tmp_reg = in32( cthis->gpio_vbase + GPIO_DETECT(i));
tmp_reg &= ~(1 << config->pin_number);
out32(cthis->gpio_vbase + GPIO_DETECT(i), tmp_reg);
}
}
//使能引脚中断
// tmp_reg = in32( cthis->gpio_vbase + GPIO_IRQSTATUS_SET( config->intr_line));
// tmp_reg |= 1 << config->pin_number;
// out32(cthis->gpio_vbase + GPIO_IRQSTATUS_SET( config->intr_line), tmp_reg);
#ifdef DEBUG_GPIO
dump_gpio_reg( cthis->gpio_vbase);
#endif
SIGEV_INTR_INIT( &cthis->isr_event );
cthis->irq_id = InterruptAttach_r ( GpioIntNum[ config->intr_line][ config->pin_group], gpioExtInteIsr, cthis, 1, _NTO_INTR_FLAGS_END );
return EXIT_SUCCESS;
#endif
}
