Bob Paddock <[EMAIL PROTECTED]> wrote:
> g:/winavr-20081205/lib/gcc/../../avr/include/avr/eeprom.h:199:
> error: cast from 'const uint8_t*' to 'uint8_t' loses precision
Hmm, I wonder how we (as the authors of the library) could convince
GCC that this is OK in this case. The respective code is:
__ATTR_PURE__ static __inline__ uint8_t eeprom_read_byte (const uint8_t *__p)
{
do {} while (!eeprom_is_ready ());
#if E2END <= 0xFF
EEARL = (uint8_t)__p;
#else
EEAR = (uint16_t)__p;
#endif
....so the cast from pointer to uint8_t is only applied in situations
where we *know* the target AVR does not have more than 256 EEPROM
addresses, so losing precision is OK here.
Curious, if you replace that by a cast to uint16_t (which then gets
assigned to a uint8_t register), will it still complain?
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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