8000 Use F_CPU if (?) CPU frequency switch is compile-time only by dok-net · Pull Request #6833 · esp8266/Arduino · GitHub
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Use F_CPU if (?) CPU frequency switch is compile-time only #6833

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Merged
merged 10 commits into from
Apr 15, 2020
Merged

Use F_CPU if (?) CPU frequency switch is compile-time only #6833

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4062650
At least the F_CPU define in host mock.h is needed by host Arduino.h …
dok-net Nov 26, 2019
eba0042
Geting the include order right
dok-net Nov 27, 2019
26f6ac8
According to leading core developer, runtime CPU frequency switch is …
dok-net Nov 24, 2019
689187f
Prepare for runtime CPU clock rate selection
dok-net Nov 25, 2019
426884e
Fix compile for not defined F_CPU
dok-net Nov 26, 2019
9968a62
Use defines for register CPU2X instead of hex value
dok-net Nov 26, 2019
08927ba
Fix build for host - getCpuFreqMHz there was also in conflict with ge…
dok-net Nov 26, 2019
7210ad3
Asymmetrical includes and defines on host
dok-net Nov 26, 2019
f719bb2
Support restart switch from 160MHz to 80MHz, e.g for OTA. Fixes #579
dok-net Apr 11, 2020
39d5ef9
Merge branch 'master' into fastgetcpufreq
devyte Apr 15, 2020
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Prepare for runtime CPU clock rate selection
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@dok-net
dok-net committed Apr 11, 2020
commit 689187fc31122022243483f7613f47ab1f531e7f
4 changes: 4 additions & 0 deletions cores/esp8266/Esp.h
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,11 @@ class EspClass {

uint8_t EspClass::getCpuFreqMHz()
{
#if defined(F_CPU)
return clockCyclesPerMicrosecond();
#elif !defined(F_CPU)
return system_get_cpu_freq();
#endif
}

uint32_t EspClass::getCycleCount()
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9 changes: 6 additions & 3 deletions cores/esp8266/core_esp8266_main.cpp
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Expand Up @@ -81,14 +81,17 @@ void initVariant() __attribute__((weak));
void initVariant() {
}

void preloop_update_frequency() __attribute__((weak));
void preloop_update_frequency() {
extern "C" void __preloop_update_frequency() {
#if defined(F_CPU) && (F_CPU == 160000000L)
REG_SET_BIT(0x3ff00014, BIT(0));
ets_update_cpu_frequency(160);
REG_SET_BIT(0x3ff00014, BIT(0));
#elif !defined(F_CPU)
if (system_get_cpu_freq() == 160) REG_SET_BIT(0x3ff00014, BIT(0));
#endif
}

extern "C" void preloop_update_frequency() __attribute__((weak, alias("__preloop_update_frequency")));

extern "C" bool can_yield() {
return cont_can_yield( 42BD g_pcont);
}
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0