| Line 25... |
Line 25... |
*/
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*/
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#ifndef VPIO_GPIO_H
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#ifndef VPIO_GPIO_H
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#define VPIO_GPIO_H
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#define VPIO_GPIO_H
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typedef char gpioData;
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/*!
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/*!
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GPIO Directions.
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GPIO Directions.
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*/
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*/
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enum vpioGpioTrisType
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enum gpioTrisType
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{
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{
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GPIO_INPUT = 0, ///< Define GPIO pin as an input
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GPIO_INPUT = 0, ///< Define GPIO pin as an input
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GPIO_OUTPUT = 1 ///< Define GPIO pin as an output
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GPIO_OUTPUT = 1 ///< Define GPIO pin as an output
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};
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};
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typedef enum gpioTrisType gpioTrisType;
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/*!
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/*!
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GPIO Register Map.
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GPIO Register Map.
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This structure contains the register file of a general-purpose
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This structure contains the register file of a general-purpose
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I/O. Care should be taken when using it due to endian issues.
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I/O. Care should be taken when using it due to endian issues.
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*/
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*/
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struct vpioGpioRegs
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struct gpioRegs
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{
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{
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volatile int regCtrl; ///< GPIO direction register.
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volatile gpioData regCtrl; ///< GPIO direction register.
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//unsigned int /* unused */ :24;
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unsigned int /* unused */ :24;
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volatile int regLine; ///< GPIO line data register.
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volatile gpioData regLine; ///< GPIO line data register.
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//unsigned int /* unused */ :24;
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unsigned int /* unused */ :24;
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};
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};
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typedef struct vpioGpioRegs vpioGpioRegs;
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typedef struct gpioRegs gpioRegs;
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// ==== GPIO INTERFACE ====
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gpioData gpioGetBit(gpioRegs* port, gpioData bit);
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void gpioSetBit(gpioRegs* port, gpioData bit);
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void gpioTogBit(gpioRegs* port, gpioData bit);
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void gpioClrBit(gpioRegs* port, gpioData bit);
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//void gpioPutTris(gpioRegs* port, gpioData mask);
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void gpioSetTris(gpioRegs* port, gpioData mask);
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void gpioPutData(gpioRegs* port, gpioData data);
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//gpioData gpioGetTris(gpioRegs* port);
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gpioData gpioGetData(gpioRegs* port);
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void gpioInit(gpioRegs* port);
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/*!
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/*!
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Get a port bit.
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Get a port bit.
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This function reads the value of a specific bit on a GPIO port. It
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This function reads the value of a specific bit on a GPIO port. It
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reads the entire port line and masks out the specific bit. The
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reads the entire port line and masks out the specific bit. The
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result should be interpreted as zero for 0 and non-zero for 1.
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result should be gpioDataerpreted as zero for 0 and non-zero for 1.
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@param port Memory-mapped I/O port.
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@param port Memory-mapped I/O port.
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@param bit Get port bit value.
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@param bit Get port bit value.
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@return Value of the port bit.
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@return Value of the port bit.
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*/
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*/
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inline
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inline
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int vpioGpioGetBit(vpioGpioRegs* port, int bit)
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gpioData gpioGetBit(gpioRegs* port, gpioData bit)
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{
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{
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return port->regLine & (1 << bit);
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return port->regLine & (1 << bit);
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}
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}
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/*!
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/*!
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| Line 81... |
Line 101... |
@param port Memory-mapped I/O port.
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@param port Memory-mapped I/O port.
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@param bit Set port bit to 1.
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@param bit Set port bit to 1.
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*/
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*/
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inline
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inline
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void vpioGpioSetBit(vpioGpioRegs* port, int bit)
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void gpioSetBit(gpioRegs* port, gpioData bit)
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{
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{
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port->regLine |= (1 << bit);
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port->regLine |= (1 << bit);
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}
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}
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/*!
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/*!
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| Line 98... |
Line 118... |
@param port Memory-mapped I/O port.
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@param port Memory-mapped I/O port.
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@param bit Toggle port bit between 0 and 1.
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@param bit Toggle port bit between 0 and 1.
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*/
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*/
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inline
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inline
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void vpioGpioTogBit(vpioGpioRegs* port, int bit)
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void gpioTogBit(gpioRegs* port, gpioData bit)
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{
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{
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port->regLine ^= (1 << bit);
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port->regLine ^= (1 << bit);
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}
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}
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/*!
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/*!
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| Line 115... |
Line 135... |
@param port Memory-mapped I/O port.
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@param port Memory-mapped I/O port.
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@param bit Clear port bit to 0.
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@param bit Clear port bit to 0.
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*/
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*/
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inline
|
inline
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void vpioGpioClrBit(vpioGpioRegs* port, int bit)
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void gpioClrBit(gpioRegs* port, gpioData bit)
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{
|
{
|
port->regLine &= ~(1 << bit);
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port->regLine &= ~(1 << bit);
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}
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}
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/*!
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/*!
|
| Line 127... |
Line 147... |
|
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This function configures the entire port, which controls the
|
This function configures the entire port, which controls the
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direction of specific bits of the port. It writes the entire port
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direction of specific bits of the port. It writes the entire port
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mask to the port control register.
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mask to the port control register.
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|
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@see vpioGpioTrisType
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@see gpioTrisType
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@param port Memory-mapped I/O port.
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@param port Memory-mapped I/O port.
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@param mask The entire port config mask.
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@param mask The entire port config mask.
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*/
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*/
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inline
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inline
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void vpioGpioCfgPort(vpioGpioRegs* port, int mask)
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void gpioSetTris(gpioRegs* port, gpioData mask)
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{
|
{
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port->regCtrl = mask;
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port->regCtrl = mask;
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}
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}
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|
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/*!
|
|
Configure the entire port.
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|
|
|
This function configures the entire port, which controls the
|
|
direction of specific bits of the port. It writes the entire port
|
|
mask to the port control register.
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|
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@see gpioTrisType
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@param port Memory-mapped I/O port.
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@param mask The entire port config mask.
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*/
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|
inline
|
|
gpioData gpioGetTris(gpioRegs* port)
|
|
{
|
|
//port->regCtrl = mask;
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return port->regCtrl;
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}
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|
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/*!
|
/*!
|
Put data on the port.
|
Put data on the port.
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|
|
This function writes onto the entire data line of the GPIO port. It
|
This function writes onto the entire data line of the GPIO port. It
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writes the value directly to the port register.
|
writes the value directly to the port register.
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| Line 149... |
Line 189... |
@param port Memory-mapped I/O port.
|
@param port Memory-mapped I/O port.
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@param data The data to write to the port.
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@param data The data to write to the port.
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*/
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*/
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inline
|
inline
|
void vpioGpioPutPort(vpioGpioRegs* port, int data)
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void gpioPutData(gpioRegs* port, gpioData data)
|
{
|
{
|
port->regLine = data;
|
port->regLine = data;
|
}
|
}
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|
|
/*!
|
/*!
|
| Line 166... |
Line 206... |
@param port Memory-mapped I/O port.
|
@param port Memory-mapped I/O port.
|
@return The contents of the entire port.
|
@return The contents of the entire port.
|
*/
|
*/
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|
|
inline
|
inline
|
int vpioGpioGetPort(vpioGpioRegs* port)
|
gpioData gpioGetData(gpioRegs* port)
|
{
|
{
|
return port->regLine;
|
return port->regLine;
|
}
|
}
|
|
|
/*!
|
/*!
|
Clear the entire port.
|
|
|
|
This function clears the data pins of the entire GPIO port to 0. It
|
|
writes the value directly to the port register.
|
|
|
|
@param port Memory-mapped I/O port.
|
|
*/
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|
|
|
inline
|
|
void vpioGpioClrPort(vpioGpioRegs* port)
|
|
{
|
|
vpioGpioPutPort(port, 0);
|
|
}
|
|
|
|
/*!
|
|
Initialise the GPIO port.
|
Initialise the GPIO port.
|
|
|
This function configures the entire GPIO port as inputs and clears
|
This function configures the entire GPIO port as inputs and clears
|
the whole port data register. This will restore the port to its
|
the whole port data register. This will restore the port to its
|
reset condition.
|
reset condition.
|
|
|
@param port Memory-mapped I/O port.
|
@param port Memory-mapped I/O port.
|
*/
|
*/
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|
|
inline
|
inline
|
void vpioGpioIniPort(vpioGpioRegs* port)
|
void gpioInit(gpioRegs* port)
|
{
|
{
|
vpioGpioCfgPort(port, 0);
|
gpioSetTris(port, 0);
|
vpioGpioClrPort(port);
|
gpioPutData(port, 0);
|
}
|
}
|
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|
#endif
|
#endif
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No newline at end of file
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No newline at end of file
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