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soc/rtc: add function to convert CPU frequency in MHz to rtc_cpu_freq_t

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This commit is contained in:
Ivan Grokhotkov
2017-10-14 00:27:56 +08:00
parent a242ae6d0b
commit b03e08dc4e
2 changed files with 26 additions and 0 deletions
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18
components/soc/esp32/rtc_clk.c
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@@ -504,6 +504,24 @@ uint32_t rtc_clk_cpu_freq_value(rtc_cpu_freq_t cpu_freq)
}
}
bool rtc_clk_cpu_freq_from_mhz(int mhz, rtc_cpu_freq_t* out_val)
{
if (mhz == 240) {
*out_val = RTC_CPU_FREQ_240M;
} else if (mhz == 160) {
*out_val = RTC_CPU_FREQ_160M;
} else if (mhz == 80) {
*out_val = RTC_CPU_FREQ_80M;
} else if (mhz == (int) rtc_clk_xtal_freq_get()) {
*out_val = RTC_CPU_FREQ_XTAL;
} else if (mhz == 2) {
*out_val = RTC_CPU_FREQ_2M;
} else {
return false;
}
return true;
}
/* Values of RTC_XTAL_FREQ_REG and RTC_APB_FREQ_REG are stored as two copies in
* lower and upper 16-bit halves. These are the routines to work with such a
* representation.