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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-i2c.c
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@ -1611,7 +1611,7 @@ i2c_err_t i2cSetFrequency(i2c_t * i2c, uint32_t clk_speed)
}
I2C_FIFO_CONF_t f;
uint32_t period = (APB_CLK_FREQ/clk_speed) / 2;
uint32_t period = (getApbFrequency()/clk_speed) / 2;
uint32_t halfPeriod = period/2;
uint32_t quarterPeriod = period/4;
@ -1657,7 +1657,7 @@ uint32_t i2cGetFrequency(i2c_t * i2c)
uint32_t result = 0;
uint32_t old_count = (i2c->dev->scl_low_period.period+i2c->dev->scl_high_period.period);
if(old_count>0) {
result = APB_CLK_FREQ / old_count;
result = getApbFrequency() / old_count;
} else {
result = 0;
}