1.2.17.10 PORT_GroupRead Function
C
uint32_t PORT_GroupRead(PORT_GROUP group)
Summary
Read all the I/O pins in the specified port group.
Description
The function reads the hardware pin state of all pins in the specified group and returns this as a 32 bit value. Each bit in the 32 bit value represent a pin. For example, bit 0 in group 0 will represent pin PA0. Bit 1 will represent PA1 and so on. The application should only consider the value of the port group pins which are implemented on the device.
Precondition
The PORT_Initialize() function should have been called. Input buffer (INEN bit in the Pin Configuration register) should be enabled in MHC.
Parameters
| Param | Description |
|---|---|
| group | One of the IO groups from the enum PORT_GROUP. |
Returns
A 32-bit value representing the hardware state of of all the I/O pins in the selected port group.
Example
uint32_t value; value = PORT_Read(PORT_GROUP_C);
Remarks
None.