Hi all,
I need a little assistance wrapping my head around this issue. It's not strictly an arm/cortex problem, so everyone feel free to chime in! Anyways, to the issue...
I am receiving serial data at one of the pins on my microcontroller. So for example, at PA0 (port A, pin 0), I might get a feed of 010010000. What is the best way to accept this data/modify it so that I can transmit it through UART.
My current method was to create an 8 array element, and then saving each value. But I don't think that would work because an 8 array element does not necessarily mean 8 bits, which is what my UART is setup to transmit... I'm not sure what the best way would be to handle this problem. Any help would be appreciated, thanks!
#define BITMASK(b) (1 << ((b) % CHAR_BIT)) #define BITSLOT(b) ((b) / CHAR_BIT) #define BITSET(a, b) ((a)[BITSLOT(b)] |= BITMASK(b)) #define BITCLEAR(a, b) ((a)[BITSLOT(b)] &= ~BITMASK(b)) #define BITTEST(a, b) ((a)[BITSLOT(b)] & BITMASK(b)) #define BITNSLOTS(nb) ((nb + CHAR_BIT - 1) / CHAR_BIT)
CHAR_BIT is ???
#define CHAR_BIT 8