esp-idf/components/hal/esp32/efuse_hal.c

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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "sdkconfig.h"
#include <sys/param.h>
#include "soc/soc_caps.h"
#include "hal/efuse_ll.h"
#include "hal/assert.h"
#include "hal/efuse_hal.h"
#include "soc/syscon_reg.h"
uint32_t efuse_hal_get_major_chip_version(void)
{
uint8_t eco_bit0 = efuse_ll_get_chip_ver_rev1();
uint8_t eco_bit1 = efuse_ll_get_chip_ver_rev2();
uint8_t eco_bit2 = (REG_READ(SYSCON_DATE_REG) & 0x80000000) >> 31;
uint32_t combine_value = (eco_bit2 << 2) | (eco_bit1 << 1) | eco_bit0;
uint32_t chip_ver = 0;
switch (combine_value) {
case 0:
chip_ver = 0;
break;
case 1:
chip_ver = 1;
break;
case 3:
chip_ver = 2;
break;
#if CONFIG_IDF_ENV_FPGA
case 4: /* Empty efuses, but SYSCON_DATE_REG bit is set */
chip_ver = 3;
break;
#endif // CONFIG_IDF_ENV_FPGA
case 7:
chip_ver = 3;
break;
default:
chip_ver = 0;
break;
}
return chip_ver;
}
uint32_t efuse_hal_get_minor_chip_version(void)
{
return efuse_ll_get_chip_wafer_version_minor();
}
uint32_t efuse_hal_get_rated_freq_mhz(void)
{
//Check if ESP32 is rated for a CPU frequency of 160MHz only
if (efuse_ll_get_chip_cpu_freq_rated() && efuse_ll_get_chip_cpu_freq_low()) {
return 160;
}
return 240;
}