jacob.eva/arduino-esp32
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add support for 160MHz rated CPUs (#3135)

Browse Source 
Some ESP32 chips are rated only to 160MHz. This change adds support for them and does not allow frequency to be switched to 240MHz
This commit is contained in:
Me No Dev 2019-09-05 12:30:43 +03:00 committed by GitHub
parent 5c04de6f39
commit 80ea521940
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
cores/esp32/esp32-hal-cpu.c
View File

@ -23,6 +23,7 @@
#include "soc/rtc_cntl_reg.h"
#include "rom/rtc.h"
#include "soc/apb_ctrl_reg.h"
#include "soc/efuse_reg.h"
#include "esp32-hal.h"
#include "esp32-hal-cpu.h"
@ -150,6 +151,15 @@ bool setCpuFrequencyMhz(uint32_t cpu_freq_mhz){
}
return false;
}
//check if cpu supports the frequency
if(cpu_freq_mhz == 240){
//Check if ESP32 is rated for a CPU frequency of 160MHz only
if (REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_RATED) &&
REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_LOW)) {
log_e("Can not switch to 240 MHz! Chip CPU frequency rated for 160MHz.");
cpu_freq_mhz = 160;
}
}
//Get current CPU clock configuration
rtc_clk_cpu_freq_get_config(&cconf);
//return if frequency has not changed