void MCP23009::init() {
// the same as Power-On/Reset value
IOMode(0xff); // set IODIR, 0x00 = all output
polarity(0x00);
config(0x00); // set IOCON w/ non-increment register address mode
pullup(0x00); // set no pull-ups
}
int ft_atoi(const char *str)
{
char *buf;
int i;
int *sign;
int len;
int result;
sign = (int *)malloc(sizeof(int));
buf = (char *)str;
buf = polarity(ft_rm_whitespace(buf), sign);
i = 0;
len = ft_len(buf);
result = 0;
while (buf[i] >= '0' && buf[i] <= '9')
{
result = result + (buf[i] - '0') * ft_power_ten(len - i - 1);
i++;
}
return (*sign * result);
}