mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 00:51:42 +01:00
114 lines
5.1 KiB
C
114 lines
5.1 KiB
C
// Copyright 2016-2018 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
#pragma once
|
|
|
|
/* This file contains definitions that are common between esp32/ulp.h
|
|
and esp32s2/ulp.h
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**@{*/
|
|
#define ESP_ERR_ULP_BASE 0x1200 /*!< Offset for ULP-related error codes */
|
|
#define ESP_ERR_ULP_SIZE_TOO_BIG (ESP_ERR_ULP_BASE + 1) /*!< Program doesn't fit into RTC memory reserved for the ULP */
|
|
#define ESP_ERR_ULP_INVALID_LOAD_ADDR (ESP_ERR_ULP_BASE + 2) /*!< Load address is outside of RTC memory reserved for the ULP */
|
|
#define ESP_ERR_ULP_DUPLICATE_LABEL (ESP_ERR_ULP_BASE + 3) /*!< More than one label with the same number was defined */
|
|
#define ESP_ERR_ULP_UNDEFINED_LABEL (ESP_ERR_ULP_BASE + 4) /*!< Branch instructions references an undefined label */
|
|
#define ESP_ERR_ULP_BRANCH_OUT_OF_RANGE (ESP_ERR_ULP_BASE + 5) /*!< Branch target is out of range of B instruction (try replacing with BX) */
|
|
/**@}*/
|
|
|
|
union ulp_insn; // Declared in the chip-specific ulp.h header
|
|
|
|
typedef union ulp_insn ulp_insn_t;
|
|
|
|
/**
|
|
* @brief Resolve all macro references in a program and load it into RTC memory
|
|
* @param load_addr address where the program should be loaded, expressed in 32-bit words
|
|
* @param program ulp_insn_t array with the program
|
|
* @param psize size of the program, expressed in 32-bit words
|
|
* @return
|
|
* - ESP_OK on success
|
|
* - ESP_ERR_NO_MEM if auxiliary temporary structure can not be allocated
|
|
* - one of ESP_ERR_ULP_xxx if program is not valid or can not be loaded
|
|
*/
|
|
esp_err_t ulp_process_macros_and_load(uint32_t load_addr, const ulp_insn_t* program, size_t* psize);
|
|
|
|
/**
|
|
* @brief Load ULP program binary into RTC memory
|
|
*
|
|
* ULP program binary should have the following format (all values little-endian):
|
|
*
|
|
* 1. MAGIC, (value 0x00706c75, 4 bytes)
|
|
* 2. TEXT_OFFSET, offset of .text section from binary start (2 bytes)
|
|
* 3. TEXT_SIZE, size of .text section (2 bytes)
|
|
* 4. DATA_SIZE, size of .data section (2 bytes)
|
|
* 5. BSS_SIZE, size of .bss section (2 bytes)
|
|
* 6. (TEXT_OFFSET - 12) bytes of arbitrary data (will not be loaded into RTC memory)
|
|
* 7. .text section
|
|
* 8. .data section
|
|
*
|
|
* Linker script in components/ulp/ld/esp32.ulp.ld produces ELF files which
|
|
* correspond to this format. This linker script produces binaries with load_addr == 0.
|
|
*
|
|
* @param load_addr address where the program should be loaded, expressed in 32-bit words
|
|
* @param program_binary pointer to program binary
|
|
* @param program_size size of the program binary
|
|
* @return
|
|
* - ESP_OK on success
|
|
* - ESP_ERR_INVALID_ARG if load_addr is out of range
|
|
* - ESP_ERR_INVALID_SIZE if program_size doesn't match (TEXT_OFFSET + TEXT_SIZE + DATA_SIZE)
|
|
* - ESP_ERR_NOT_SUPPORTED if the magic number is incorrect
|
|
*/
|
|
esp_err_t ulp_load_binary(uint32_t load_addr, const uint8_t* program_binary, size_t program_size);
|
|
|
|
/**
|
|
* @brief Run the program loaded into RTC memory
|
|
* @param entry_point entry point, expressed in 32-bit words
|
|
* @return ESP_OK on success
|
|
*/
|
|
esp_err_t ulp_run(uint32_t entry_point);
|
|
|
|
/**
|
|
* @brief Set one of ULP wakeup period values
|
|
*
|
|
* ULP coprocessor starts running the program when the wakeup timer counts up
|
|
* to a given value (called period). There are 5 period values which can be
|
|
* programmed into SENS_ULP_CP_SLEEP_CYCx_REG registers, x = 0..4.
|
|
* By default, wakeup timer will use the period set into SENS_ULP_CP_SLEEP_CYC0_REG,
|
|
* i.e. period number 0. ULP program code can use SLEEP instruction to select
|
|
* which of the SENS_ULP_CP_SLEEP_CYCx_REG should be used for subsequent wakeups.
|
|
*
|
|
* However, please note that SLEEP instruction issued (from ULP program) while the system
|
|
* is in deep sleep mode does not have effect, and sleep cycle count 0 is used.
|
|
*
|
|
* @param period_index wakeup period setting number (0 - 4)
|
|
* @param period_us wakeup period, us
|
|
* @note The ULP FSM requires two clock cycles to wakeup before being able to run the program.
|
|
* Then additional 16 cycles are reserved after wakeup waiting until the 8M clock is stable.
|
|
* The FSM also requires two more clock cycles to go to sleep after the program execution is halted.
|
|
* The minimum wakeup period that may be set up for the ULP
|
|
* is equal to the total number of cycles spent on the above internal tasks.
|
|
* For a default configuration of the ULP running at 150kHz it makes about 133us.
|
|
* @return
|
|
* - ESP_OK on success
|
|
* - ESP_ERR_INVALID_ARG if period_index is out of range
|
|
*/
|
|
esp_err_t ulp_set_wakeup_period(size_t period_index, uint32_t period_us);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|