diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/arch/atmega2560/driver/timer.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/include/arch/atmega2560/driver/timer.h b/include/arch/atmega2560/driver/timer.h index 1529c86..39385b1 100644 --- a/include/arch/atmega2560/driver/timer.h +++ b/include/arch/atmega2560/driver/timer.h @@ -19,19 +19,16 @@ class Timer { inline void setup_khz(uint16_t const frequency) { // 16 MHz base OCR4A = frequency ? 16000 / frequency : 65535; - TCCR4A = 0; - TCCR4B = _BV(WGM42); prescaler = _BV(CS40); } - inline void setup_hz(uint16_t const frequency) { // 16 MHz / 256 == 62.5 kHz base - OCR4A = frequency ? 62500 / frequency : 65535; - TCCR4A = 0; - TCCR4B = _BV(WGM42); + inline void setup_hz(uint16_t const frequency) { // 16 MHz / 1024 == 15625 Hz base + OCR4A = frequency ? 15625 / frequency : 65535; prescaler = _BV(CS42); } inline void start(unsigned char const interrupt) { TCNT4 = 0; - TCCR4B |= prescaler; + TCCR4A = 0; + TCCR4B = _BV(WGM42) | prescaler; if (interrupt) { TIMSK4 = _BV(OCIE4A); } |