GCC转换为类成员的指针问题:
今天找到另一种方法，使用memcpy_P而不用pgm_read_word，将其转换为类成员的指针，测试通过。
#include <avr/io.h>
#include <avr/pgmspace.h>
#include <compat/ina90.h>
class KeyObj ;
typedef prog_void (KeyObj::* PFV)(void);
#define KeyCP (1)
#define KeyCLK (2)
#define KeyData (3)
class KeyObj {
private:
unsigned char KeyVal;
unsigned int KeyTest[8];
public:
unsigned char KeyCount;
KeyObj(void);
void KeyInit(void);
void SetKeyVal(unsigned char keyval);
void SetKeyCount(unsigned char count);
unsigned char GetKeyVal(void);//
void KeyCommandExec(unsigned char);
static const PFV KeyCommandTab[3][5];
void Exec(void);
void Key00(void);
...
void Key24(void);
};
inline unsigned char KeyObj::GetKeyVal(void)
{
unsigned char KeyVal = 0;
PORTC &= ~(1 << KeyCP);
_NOP();//??
PORTC |= (1 << KeyCP);
for(int i = 8; i > 0; i --)
{
KeyVal <<= 1;
PORTC &= ~(1 << KeyCLK);
_NOP();//??
if (!(PINC & (1 << KeyData))) KeyVal ++;
PORTC |= (1 << KeyCLK);
}
return KeyVal;//?????0
}
inline void KeyObj::Exec(void)
{
static const unsigned char KeyTab[8] PROGMEM = {
0b10000000,
0b01000000,
0b00100000,
0b00010000,
0b00001000,
0b00000100,
0b00000010,
0b00000001
};
KeyCount &= 0x07;
KeyVal = GetKeyVal();
if (KeyVal & pgm_read_byte(&KeyTab[KeyCount])) {
if (KeyTest[KeyCount] < 1200) {
KeyTest[KeyCount] ++;
if (KeyTest[KeyCount] == 2) {
KeyCommandExec(1);
}
}
else {
KeyTest[KeyCount] = 2;
KeyCommandExec(2);
}
}
else {
if (KeyTest[KeyCount] >= 2) {
KeyCommandExec(0);
}
else {
}
KeyTest[KeyCount] = 0;
}
KeyCount ++;
KeyCount &= 0x07;
}
void KeyObj::SetKeyVal(unsigned char keyval)
{
KeyVal = keyval;
}
void KeyObj::SetKeyCount(unsigned char count)
{
KeyCount = count;
}
const PFV KeyObj::KeyCommandTab[3][5] PROGMEM=
{
{&KeyObj::Key00, &KeyObj::Key01, &KeyObj::Key02, &KeyObj::Key03, &KeyObj::Key04}, //???????
{&KeyObj::Key10, &KeyObj::Key11, &KeyObj::Key12, &KeyObj::Key13, &KeyObj::Key14}, //??????
{&KeyObj::Key20, &KeyObj::Key21, &KeyObj::Key22, &KeyObj::Key23, &KeyObj::Key24} //???????
};
void KeyObj::KeyCommandExec(unsigned char mode)
{
KeyCount &= 0x07;
if (KeyCount <= 4)
{
PFV f;
memcpy_P(&f, &(KeyObj::KeyCommandTab[(int)mode][(int)KeyCount]), sizeof(PFV));
(this->*f)();
}
}
void KeyObj::Key00(void)
{
}
...
void KeyObj::Key24(void)
{
}
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