/*********************************************************************//**
* @brief Clear Value for bits that have output direction on GPIO port.
* @param[in] portNum Port number value, should be in range from 0 to 4
* @param[in] bitValue Value that contains all bits on GPIO to clear,
* in range from 0 to 0xFFFFFFFF.
* example: value 0x5 to clear bit 0 and bit 1.
* @return None
*
* Note:
* - For all bits that has been set as input direction, this function will
* not effect.
* - For all remaining bits that are not activated in bitValue (value '0')
* will not be effected by this function.
**********************************************************************/
void GPIO_ClearValue(uint8_t portNum, uint32_t bitValue)
{
LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum);
if (pGPIO != NULL) {
pGPIO->FIOCLR = bitValue;
}
}
/*********************************************************************//**
* @brief Set Value for bits that have output direction on GPIO port.
* @param[in] portNum Port number value, should be in range from 0 to 4
* @param[in] bitValue Value that contains all bits on GPIO to set,
* in range from 0 to 0xFFFFFFFF.
* example: value 0x5 to set bit 0 and bit 1.
* @return None
*
* Note:
* - For all bits that has been set as input direction, this function will
* not effect.
* - For all remaining bits that are not activated in bitValue (value '0')
* will not be effected by this function.
**********************************************************************/
void GPIO_SetValue(uint8_t portNum, uint32_t bitValue)
{
GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum);
if (pGPIO != NULL) {
pGPIO->FIOSET = bitValue;
}
}
/*********************************************************************//**
* @brief Read Current state on port pin that have input direction of GPIO
* @param[in] portNum Port number to read value, in range from 0 to 4
* @return Current value of GPIO port.
*
* Note: Return value contain state of each port pin (bit) on that GPIO regardless
* its direction is input or output.
**********************************************************************/
uint32_t GPIO_ReadValue(uint8_t portNum)
{
LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum);
if (pGPIO != NULL) {
return pGPIO->FIOPIN;
}
return (0);
}
/*********************************************************************//**
* @brief Set mask value for bits in FIO port
* @param[in] portNum Port number, in range from 0 to 4
* @param[in] bitValue Value that contains all bits in to set,
* in range from 0 to 0xFFFFFFFF.
* @param[in] maskValue Mask value contains state value for each bit:
* - 0: not mask.
* - 1: mask.
* @return None
*
* Note:
* - All remaining bits that are not activated in bitValue (value '0')
* will not be effected by this function.
* - After executing this function, in mask register, value '0' on each bit
* enables an access to the corresponding physical pin via a read or write access,
* while value '1' on bit (masked) that corresponding pin will not be changed
* with write access and if read, will not be reflected in the updated pin.
**********************************************************************/
void FIO_SetMask(uint8_t portNum, uint32_t bitValue, uint8_t maskValue)
{
GPIO_TypeDef *pFIO = GPIO_GetPointer(portNum);
if(pFIO != NULL) {
// Mask
if (maskValue){
pFIO->FIOMASK |= bitValue;
}
// Un-mask
else {
pFIO->FIOMASK &= ~bitValue;
}
}
}
/*********************************************************************//**
* @brief Set Direction for GPIO port.
* @param[in] portNum Port Number value, should be in range from 0 to 4
* @param[in] bitValue Value that contains all bits to set direction,
* in range from 0 to 0xFFFFFFFF.
* example: value 0x5 to set direction for bit 0 and bit 1.
* @param[in] dir Direction value, should be:
* - 0: Input.
* - 1: Output.
* @return None
*
* Note: All remaining bits that are not activated in bitValue (value '0')
* will not be effected by this function.
**********************************************************************/
void GPIO_SetDir(uint8_t portNum, uint32_t bitValue, uint8_t dir)
{
LPC_GPIO_TypeDef *pGPIO = GPIO_GetPointer(portNum);
if (pGPIO != NULL) {
// Enable Output
if (dir) {
pGPIO->FIODIR |= bitValue;
}
// Enable Input
else {
pGPIO->FIODIR &= ~bitValue;
}
}
}
