Mbed OS的函数改成HAL函数怎么写？

TextLCD::TextLCD(PinName rs, PinName e, PinName d4, PinName d5,
PinName d6, PinName d7, LCDType type) : _rs(rs),
_e(e), _d(d4, d5, d6, d7),
_type(type) {
_e = 1;
_rs = 0; // command mode
wait_us(1500); // Wait 15ms to ensure powered up
/* send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)*/
for (int i=0; i<3; i++) {
writeByte(0x3);
wait_us(1640); // this command takes 1.64ms, so wait for it
}
writeByte(0x2); // 4-bit mode
wait_us(40); // most instructions take 40us
writeCommand(0x28); // Function set 001 BW N F - -
writeCommand(0x0C);
writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
cls();
}