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80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include "sdkconfig.h"
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#include <stdint.h>
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#include "soc/reset_reasons.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Print formated string to console device
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* @note float and long long data are not supported!
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*
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* @param fmt Format string
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* @param ... Additional arguments, depending on the format string
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* @return int: Total number of characters written on success; A negative number on failure.
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*/
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int esp_rom_printf(const char *fmt, ...);
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/**
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* @brief Pauses execution for us microseconds
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*
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* @param us Number of microseconds to pause
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*/
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void esp_rom_delay_us(uint32_t us);
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/**
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* @brief esp_rom_printf can print message to different channels simultaneously.
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* This function can help install the low level putc function for esp_rom_printf.
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*
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* @param channel Channel number (startting from 1)
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* @param putc Function pointer to the putc implementation. Set NULL can disconnect esp_rom_printf with putc.
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*/
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void esp_rom_install_channel_putc(int channel, void (*putc)(char c));
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/**
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* @brief Install UART1 as the default console channel, equivalent to `esp_rom_install_channel_putc(1, esp_rom_uart_putc)`
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*/
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void esp_rom_install_uart_printf(void);
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/**
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* @brief Get reset reason of CPU
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*
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* @param cpu_no CPU number
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* @return Reset reason code (see in soc/reset_reasons.h)
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*/
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soc_reset_reason_t esp_rom_get_reset_reason(int cpu_no);
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/**
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* @brief Route peripheral interrupt sources to CPU's interrupt port by matrix
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*
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* Usually there're 4 steps to use an interrupt:
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* 1. Route peripheral interrupt source to CPU. e.g. esp_rom_route_intr_matrix(0, ETS_WIFI_MAC_INTR_SOURCE, ETS_WMAC_INUM)
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* 2. Set interrupt handler for CPU
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* 3. Enable CPU interupt
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* 4. Enable peripheral interrupt
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*
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* @param cpu_core The CPU number, which the peripheral interupt will inform to
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* @param periph_intr_id The peripheral interrupt source number
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* @param cpu_intr_num The CPU interrupt number
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*/
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void esp_rom_route_intr_matrix(int cpu_core, uint32_t periph_intr_id, uint32_t cpu_intr_num);
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/**
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* @brief Get the real CPU ticks per us
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*
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* @return CPU ticks per us
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*/
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uint32_t esp_rom_get_cpu_ticks_per_us(void);
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#ifdef __cplusplus
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}
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#endif
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