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CPU and APB Frequency support (#2220)

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* Add support to HAL for APB frequencies different than 80MHz

* Add support for CPU frequencies in the IDE board menu

* Switch to fast set_config

* Add method to uart so debug can be reassigned after apb frequency switch

* Return real APB frequency
This commit is contained in:
Me No Dev
2018-12-20 01:57:32 +01:00
committed by GitHub
parent 1628f533a1
commit c827bb4177
9 changed files with 101 additions and 34 deletions
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4
cores/esp32/esp32-hal-ledc.c
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@ -84,7 +84,7 @@ static void _ledcSetupTimer(uint8_t chan, uint32_t div_num, uint8_t bit_num, boo
//max bit_num 0x1F (31)
static double _ledcSetupTimerFreq(uint8_t chan, double freq, uint8_t bit_num)
{
uint64_t clk_freq = APB_CLK_FREQ;
uint64_t clk_freq = getApbFrequency();
clk_freq <<= 8;//div_num is 8 bit decimal
uint32_t div_num = (clk_freq >> bit_num) / freq;
bool apb_clk = true;
@ -117,7 +117,7 @@ static double _ledcTimerRead(uint8_t chan)
LEDC_MUTEX_UNLOCK();
uint64_t clk_freq = 1000000;
if(apb_clk) {
clk_freq *= 80;
clk_freq = getApbFrequency();
}
clk_freq <<= 8;//div_num is 8 bit decimal
return (clk_freq >> bit_num) / (double)div_num;