mirror of
https://github.com/espressif/esp-idf.git
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94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 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 <stdint.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include "esp_err.h"
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#include "ulp_common.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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ULP_RISCV_WAKEUP_SOURCE_TIMER,
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ULP_RISCV_WAKEUP_SOURCE_GPIO,
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} ulp_riscv_wakeup_source_t;
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typedef struct {
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ulp_riscv_wakeup_source_t wakeup_source;
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} ulp_riscv_cfg_t;
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#define ULP_RISCV_DEFAULT_CONFIG() \
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{ \
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.wakeup_source = ULP_RISCV_WAKEUP_SOURCE_TIMER, \
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}
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/**
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* @brief Configure the ULP and run the program loaded into RTC memory
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*
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* @param cfg pointer to the config struct
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* @return ESP_OK on success
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*/
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esp_err_t ulp_riscv_config_and_run(ulp_riscv_cfg_t* cfg);
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/**
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* @brief Configure the ULP with default settings
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* and run the program loaded into RTC memory
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*
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* @return ESP_OK on success
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*/
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esp_err_t ulp_riscv_run(void);
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/**
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* @brief Load ULP-RISC-V program binary into RTC memory
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*
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* Different than ULP FSM, the binary program has no special format, it is the ELF
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* file generated by RISC-V toolchain converted to binary format using objcopy.
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*
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* Linker script in components/ulp/ld/ulp_riscv.ld produces ELF files which
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* correspond to this format. This linker script produces binaries with load_addr == 0.
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*
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* @param program_binary pointer to program binary
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* @param program_size_bytes size of the program binary
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_SIZE if program_size_bytes is more than 8KiB
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*/
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esp_err_t ulp_riscv_load_binary(const uint8_t* program_binary, size_t program_size_bytes);
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/**
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* @brief Stop the ULP timer
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*
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* @note This will stop the ULP from waking up if halted, but will not abort any program
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* currently executing on the ULP.
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*/
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void ulp_riscv_timer_stop(void);
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/**
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* @brief Resumes the ULP timer
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*
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* @note This will resume an already configured timer, but does no other configuration
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*
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*/
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void ulp_riscv_timer_resume(void);
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/**
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* @brief Halts the program currently running on the ULP-RISC-V
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*
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* @note Program will restart at the next ULP timer trigger if timer is still running.
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* If you want to stop the ULP from waking up then call ulp_riscv_timer_stop() first.
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*/
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void ulp_riscv_halt(void);
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#ifdef __cplusplus
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}
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#endif
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