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Expose spi word size using both software and hardware backends

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This commit is contained in:
BlackMark 2022-05-28 17:03:40 +02:00
parent f359f46ffc
commit 852ad5a318
3 changed files with 12 additions and 11 deletions
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4
hardware.hpp
View File

@ -9,6 +9,8 @@ namespace spi {
template <class Cfg> template <class Cfg>
class Hardware { class Hardware {
public: public:
using word_t = uint8_t;
static void init() static void init()
{ {
if constexpr (Cfg::SIDE == Side::MASTER) { if constexpr (Cfg::SIDE == Side::MASTER) {
@ -35,7 +37,7 @@ class Hardware {
SPCR |= (1 << SPE); SPCR |= (1 << SPE);
} }
static uint8_t transfer(uint8_t data) static word_t transfer(word_t data)
{ {
SPDR = data; SPDR = data;
while (!(SPSR & (1 << SPIF))) while (!(SPSR & (1 << SPIF)))

2
software.hpp
View File

@ -24,6 +24,7 @@ class Software {
return (delayUs > 0 ? delayUs : 0); return (delayUs > 0 ? delayUs : 0);
} }
public:
static_assert(Cfg::BITS >= 1 && Cfg::BITS <= 64, "Word size must be in range [1-64]"); static_assert(Cfg::BITS >= 1 && Cfg::BITS <= 64, "Word size must be in range [1-64]");
// clang-format off // clang-format off
using word_t = util::conditional_t<Cfg::BITS <= 8, uint8_t, using word_t = util::conditional_t<Cfg::BITS <= 8, uint8_t,
@ -32,7 +33,6 @@ class Software {
uint64_t>>>; uint64_t>>>;
// clang-format on // clang-format on
public:
static void init() static void init()
{ {
sm_sck = ((Cfg::MODE == Mode::MODE_0 || Cfg::MODE == Mode::MODE_1) ? false : true); sm_sck = ((Cfg::MODE == Mode::MODE_0 || Cfg::MODE == Mode::MODE_1) ? false : true);

17
spi.hpp
View File

@ -9,24 +9,23 @@
namespace spi { namespace spi {
template <class Driver> template <class Driver>
class Spi { struct Spi {
public: using word_t = typename Driver::word_t;
static void init()
static inline void init()
{ {
Driver::init(); Driver::init();
} }
static uint8_t transfer(uint8_t ui8Data) static inline word_t transfer(const word_t data)
{ {
return Driver::transfer(ui8Data); return Driver::transfer(data);
} }
static void select(bool bSelect) static inline void select(const bool selectState)
{ {
Driver::select(bSelect); Driver::select(selectState);
} }
private:
}; };
} // namespace spi } // namespace spi