void EXTI_Polarity_Set(PAD_Type Px, uint16_t GPIO_Pin, uint16_t Polarity )
{
uint32_t pinpos = 0x00, pos = 0x00, currentpin = 0x00, loop = 16;
P_Port_Def *px_exti;
assert_param(IS_PAD_TYPE(Px));
if (Px == PAD_PA) px_exti = EXTI_PA;
else if (Px == PAD_PB) px_exti = EXTI_PB;
else if (Px == PAD_PC) px_exti = EXTI_PC;
else
{
px_exti = (P_Port_Def*)EXTI_PD;
loop = 5;
}
for(pinpos = 0x00; pinpos < loop; pinpos++)
{
pos = ((uint32_t)0x01) << pinpos;
currentpin = GPIO_Pin & pos;
if(currentpin == pos)
{
if(Polarity == EXTI_Trigger_Rising)
px_exti->Port[pinpos] |= EXTI_Px_INTPOR_RISING_EDGE;
else
px_exti->Port[pinpos] |= EXTI_Px_INTPOR_FALLING_EDGE;
}
}
}
/**
* @brief Initializes the EXTI peripheral according to the specified
* parameters in the EXTI_InitStruct.
* @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure
* that contains the configuration information for the EXTI peripheral.
* @retval None
*/
void EXTI_Init(PAD_Type Px, EXTI_InitTypeDef* EXTI_InitStruct)
{
uint32_t pinpos = 0x00, pos = 0x00, currentpin = 0x00, loop = 16;
P_Port_Def *px_exti;
assert_param(IS_PAD_TYPE(Px));
if (Px == PAD_PA) px_exti = EXTI_PA;
else if (Px == PAD_PB) px_exti = EXTI_PB;
else if (Px == PAD_PC) px_exti = EXTI_PC;
else
{
px_exti = (P_Port_Def*)EXTI_PD;
loop = 5;
}
for(pinpos = 0x00; pinpos < loop; pinpos++)
{
pos = ((uint32_t)0x01) << pinpos;
currentpin = (EXTI_InitStruct->EXTI_Line) & pos;
if(currentpin == pos)
{
px_exti->Port[pinpos] |= EXTI_Px_INTEN_ENABLE;
if(EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising)
px_exti->Port[pinpos] |= EXTI_Px_INTPOR_RISING_EDGE;
else
px_exti->Port[pinpos] |= EXTI_Px_INTPOR_FALLING_EDGE;
}
}
}
uint16_t EXTI_Px_GetEXTINTPOL(PAD_Type Px)
{
uint32_t i, loop = 16;
uint16_t ret=0;
P_Port_Def *px_exti;
assert_param(IS_PAD_TYPE(Px));
if (Px == PAD_PA)
{
px_exti =(P_Port_Def*)EXTI_PA;
loop = 15;
}
else if (Px == PAD_PB)
{
px_exti = (P_Port_Def*)EXTI_PB;
loop = 4;
}
else
{
px_exti = (P_Port_Def*)EXTI_PC;
loop = 16;
}
for(i = 0x00; i < loop; i++)
{
ret |= ((px_exti->Port[i]&0x1)<<i);
}
return ret;
}
uint16_t EXTI_Px_GetEXTEN(PAD_Type Px)
{
uint32_t i, loop = 16;
uint16_t ret=0;
P_Port_Def *px_exti;
assert_param(IS_PAD_TYPE(Px));
if (Px == PAD_PA) px_exti = EXTI_PA;
else if (Px == PAD_PB) px_exti = EXTI_PB;
else if (Px == PAD_PC) px_exti = EXTI_PC;
else
{
px_exti = (P_Port_Def*)EXTI_PD;
loop = 5;
}
for(i = 0x00; i < loop; i++)
{
ret |= (((px_exti->Port[i]&0x2)>>1)<<i);
}
return ret;
}
