diff options
Diffstat (limited to 'include/arch/esp8266/driver')
| -rw-r--r-- | include/arch/esp8266/driver/counter.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/arch/esp8266/driver/counter.h b/include/arch/esp8266/driver/counter.h index 754f4d6..42f6f14 100644 --- a/include/arch/esp8266/driver/counter.h +++ b/include/arch/esp8266/driver/counter.h @@ -7,26 +7,31 @@ extern "C" { } #include "c_types.h" +typedef counter_value_t uint32_t; +typedef counter_overflowed_t uint32_t; + class Counter { private: Counter(const Counter ©); uint32_t start_cycles; public: - Counter() : start_cycles(0) {} + uint32_t value; uint32_t overflowed; + Counter() : start_cycles(0), value(0), overflowed(0) {} + inline void start() { asm volatile ("esync; rsr %0,ccount":"=a" (start_cycles)); } - inline uint32_t stop() { + inline void stop() { uint32_t stop_cycles; asm volatile ("esync; rsr %0,ccount":"=a" (stop_cycles)); if (stop_cycles > start_cycles) { - return stop_cycles - start_cycles; + value = stop_cycles - start_cycles; } else { - return 0; + overflowed = 1; } } }; |