60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
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#include "espressif/esp_misc.h"
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#include "esp/gpio_regs.h"
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#include "esp/rtc_regs.h"
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#include "sdk_internal.h"
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#include "xtensa/hal.h"
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static int cpu_freq = 80;
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void (*sdk__putc1)(char);
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int IRAM sdk_os_get_cpu_frequency(void) {
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return cpu_freq;
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}
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void sdk_os_update_cpu_frequency(int freq) {
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cpu_freq = freq;
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}
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void sdk_ets_update_cpu_frequency(int freq) __attribute__ (( alias ("sdk_os_update_cpu_frequency") ));
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void sdk_os_delay_us(uint16_t us) {
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uint32_t start_ccount = xthal_get_ccount();
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uint32_t delay_ccount = cpu_freq * us;
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while (xthal_get_ccount() - start_ccount < delay_ccount) {}
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}
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void sdk_ets_delay_us(uint16_t us) __attribute__ (( alias ("sdk_os_delay_us") ));
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void sdk_os_install_putc1(void (*p)(char)) {
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sdk__putc1 = p;
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}
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void sdk_os_putc(char c) {
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sdk__putc1(c);
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}
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void sdk_gpio_output_set(uint32_t set_mask, uint32_t clear_mask, uint32_t enable_mask, uint32_t disable_mask) {
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GPIO.OUT_SET = set_mask;
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GPIO.OUT_CLEAR = clear_mask;
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GPIO.ENABLE_OUT_SET = enable_mask;
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GPIO.ENABLE_OUT_CLEAR = disable_mask;
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}
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uint8_t sdk_rtc_get_reset_reason(void) {
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uint8_t reason;
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reason = FIELD2VAL(RTC_RESET_REASON1_CODE, RTC.RESET_REASON1);
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if (reason == 5) {
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if (FIELD2VAL(RTC_RESET_REASON2_CODE, RTC.RESET_REASON2) == 1) {
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reason = 6;
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} else {
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if (FIELD2VAL(RTC_RESET_REASON2_CODE, RTC.RESET_REASON2) != 8) {
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reason = 0;
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}
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}
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}
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RTC.RESET_REASON0 &= ~RTC_RESET_REASON0_SOMETHING;
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return reason;
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}
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