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Initial timer setup code

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pmantoine 2022-04-07 16:55:33 +08:00
parent 5ccef35074
commit 63c9ca414d
1 changed files with 20 additions and 1 deletions
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19
DCCTimerSAMD.cpp
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@ -65,6 +65,25 @@ void DCCTimer::begin(INTERRUPT_CALLBACK callback) {
ADC->CTRLA.bit.ENABLE = 1; // enable ADC
while(ADC->STATUS.bit.SYNCBUSY == 1); // wait for synchronization
// PMA - actual timer setup goo
// Setup clock sources first
REG_GCLK_GENDIV = GCLK_GENDIV_DIV(1) | // Divide 48MHz by 1
GCLK_GENDIV_ID(4); // Apply to GCLK4
while (GCLK->STATUS.bit.SYNCBUSY); // Wait for synchronization
REG_GCLK_GENCTRL = GCLK_GENCTRL_GENEN | // Enable GCLK
GCLK_GENCTRL_SRC_DFLL48M | // Set the 48MHz clock source
GCLK_GENCTRL_ID(4); // Select GCLK4
while (GCLK->STATUS.bit.SYNCBUSY); // Wait for synchronization
REG_GCLK_CLKCTRL = GCLK_CLKCTRL_CLKEN | // Enable generic clock
4 << GCLK_CLKCTRL_GEN_Pos | // Apply to GCLK4
GCLK_CLKCTRL_ID_TCC0_TCC1; // Feed GCLK to TCC0/1
while (GCLK->STATUS.bit.SYNCBUSY);
}
bool DCCTimer::isPWMPin(byte pin) {