Follow up from change Ibe4300275286ef275b2097534c84f1029d761d87
which extends comments to the nfc_nci_module_t and nfc_nci_device_t
structures.
Change-Id: I060bda450912ff3fc041027faa8f03c24e310870
Inheritance of HAL object is performed by composing a child structure of a
single parent structure located at offset 0 followed by new data members
and function pointers in the child structure.
For example,
struct child {
struct parent common;
int a_data_member;
void (*a_method)(struct child *c, int v);
};
HAL code assumes this layout when accessing child structures given a pointer
to a parent structure such that users write code like the following...
void child_method(struct *parent, int v) {
struct child * c = (struct child*)parent;
// do stuff with c
}
Code above will break if a member is added before "common" in "struct child".
This change adds comments that describe the restriction on the location of
parent HAL objects within a derived HAL object. HAL objects that already
have comments that describe the required location of parent objects are not
modified.
Change-Id: Ibe4300275286ef275b2097534c84f1029d761d87
Add I2C slave address. Multiple I2C addresses are possible
for PN544 module. Configure address according to board design.
Change-Id: I847e8f3db631f5039cf15143a9982f4b9b209f27
First implementation of a NFC HAL. This implementation doesn't
offer a generic NFC device HAL (yet), but offers typed interfaces
for different NFC controllers. Currently only the PN544 is supported.
Change-Id: I3ac04dcd767fb12a433edbe88ec7068eb1930a57
