void initGPIO(int nGpio, int modulo, int direction){
switch(modulo){
case MODULO_0:
GPIO0_ModuleClkConfig();
modulo0(nGpio);
break;
case MODULO_1:
GPIO1_ModuleClkConfig();
modulo1(nGpio);
break;
case MODULO_2:
GPIO2_ModuleClkConfig();
modulo2(nGpio);
break;
case MODULO_3:
GPIO3_ModuleClkConfig();
modulo3(nGpio);
break;
}
/* Enabling the GPIO module. */
GPIOModuleEnable(GPIO_INSTANCE_ADDRESS(modulo));
/* Resetting the GPIO module. */
//GPIOModuleReset(GPIO_INSTANCE_ADDRESS(modulo));
/* Setting the GPIO pin as an output pin. */
GPIODirModeSet(GPIO_INSTANCE_ADDRESS(modulo),
GPIO_INSTANCE_PIN_NUMBER(nGpio),
direction);
}
void GpioModuleEnable(unsigned int module_addr)
{
/* Enabling the GPIO module. */
GPIOModuleEnable(module_addr);
/* Resetting the GPIO module. */
GPIOModuleReset(module_addr);
}
void gpioLedInit()
{
/* Enabling the GPIO module. */
GPIOModuleEnable(GPIO_INSTANCE_ADDRESS);
/* Perform a module reset of the GPIO module. */
GPIOModuleReset(GPIO_INSTANCE_ADDRESS);
/* Set the specified pin as an output pin. */
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
GPIO_INSTANCE_PIN_NUMBER,
GPIO_DIR_OUTPUT);
}
void gpioInit(void)
{
// enable clock for gpio 0,1,2
GPIO0ModuleClkConfig();
GPIO1ModuleClkConfig();
GPIO2ModuleClkConfig();
// select gpio pins for use
gpioPinMux();
/* Enabling the GPIO module. */
GPIOModuleEnable(GPIO_BASE1);
GPIOModuleEnable(GPIO_BASE0);
GPIOModuleEnable(GPIO_BASE2);
/* Resetting the GPIO module. */
GPIOModuleReset(GPIO_BASE0);
GPIOModuleReset(GPIO_BASE1);
GPIOModuleReset(GPIO_BASE2);
// set directions for the gpio pins in use
gpioDirModeSet();
}
/*FUNCTION*-------------------------------------------------------
*
* Function Name : ledInit
* Comments :
*END*-----------------------------------------------------------*/
int ledInit(){
/* Enabling functional clocks for GPIO1 instance. */
GPIO1_ModuleClkConfig();
/* Selecting GPIO1[23] pin for use. */
/*GPIOPinMuxSetup(CONTROL_CONF_GPMC_A(7), CONTROL_CONF_MUXMODE(7));*/
GetGPIOPinName();
/* Enabling the GPIO module. */
GPIOModuleEnable(GPIO_INSTANCE_ADDRESS);
/* Resetting the GPIO module. */
GPIOModuleReset(GPIO_INSTANCE_ADDRESS);
/* Setting the GPIO pin as an output pin. */
GPIODirModeSet(GPIO_INSTANCE_ADDRESS,
GPIO_INSTANCE_PIN_NUMBER,
DIR_OUTPUT);
return(0);
}
void configWakeGpio()
{
/* Enabling the GPIO module. */
GPIOModuleEnable(GPIO_WAKE_INSTANCE);
/* Perform a module reset of the GPIO module. */
//GPIOModuleReset(GPIO_WAKE_INSTANCE);
/* Set the specified pin as an Input pin. */
GPIODirModeSet(GPIO_WAKE_INSTANCE,
GPIO_WAKE_PIN_NUM,
GPIO_DIR_INPUT);
GPIOIntTypeSet(GPIO_WAKE_INSTANCE,
GPIO_WAKE_PIN_NUM,
GPIO_INT_TYPE_BOTH_EDGE);
HWREG(GPIO_WAKE_INSTANCE + 0x34) = 0x40000000;
HWREG(GPIO_WAKE_INSTANCE + 0x38) = 0x40000000;
HWREG(GPIO_WAKE_INSTANCE + 0x44) = 0x40000000;
}
int main(void)
{
/* unsigned int count = 0; */
/* Configuring the functional clock for GPIO0 instance. */
GPIO0ModuleClkConfig();
/* Doing a pin multiplexing and selecting GPIO0[7] for use. */
GPIO0Pin7PinMuxSetup();
/* Enabling the GPIO module. */
GPIOModuleEnable(SOC_GPIO_0_REGS);
/* Resetting the GPIO module. */
GPIOModuleReset(SOC_GPIO_0_REGS);
/* Configuring GPIO0[7] pin as an output pin. */
GPIODirModeSet(SOC_GPIO_0_REGS,
GPIO_INSTANCE_PIN_NUMBER,
GPIO_DIR_OUTPUT);
while(1)
{
/* Driving GPIO0[7] pin to logic HIGH. */
GPIOPinWrite(SOC_GPIO_0_REGS,
GPIO_INSTANCE_PIN_NUMBER,
GPIO_PIN_HIGH);
Delay(0xFFFFF);
/* Driving GPIO0[7] pin to logic LOW. */
GPIOPinWrite(SOC_GPIO_0_REGS,
GPIO_INSTANCE_PIN_NUMBER,
GPIO_PIN_LOW);
Delay(0xFFFFF);
}
}
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
}