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https://github.com/espressif/esp-idf.git
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52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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/*
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* SPDX-FileCopyrightText: 2010-2021 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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#include <stdint.h>
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#include <sdkconfig.h>
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#include "soc/soc_caps.h"
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#include "soc/dport_access.h"
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#include "esp_attr.h"
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IRAM_ATTR uint32_t esp_dport_access_reg_read(uint32_t reg)
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{
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#if defined(BOOTLOADER_BUILD) || defined(CONFIG_FREERTOS_UNICORE) || !SOC_DPORT_WORKAROUND
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return _DPORT_REG_READ(reg);
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#else
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uint32_t apb;
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unsigned int intLvl;
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__asm__ __volatile__ (\
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"rsil %[LVL], "XTSTR(SOC_DPORT_WORKAROUND_DIS_INTERRUPT_LVL)"\n"\
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"movi %[APB], "XTSTR(0x3ff40078)"\n"\
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"l32i %[APB], %[APB], 0\n"\
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"l32i %[REG], %[REG], 0\n"\
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"wsr %[LVL], "XTSTR(PS)"\n"\
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"rsync\n"\
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: [APB]"=a"(apb), [REG]"+a"(reg), [LVL]"=a"(intLvl)\
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: \
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: "memory" \
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);
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return reg;
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#endif
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}
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IRAM_ATTR uint32_t esp_dport_access_sequence_reg_read(uint32_t reg)
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{
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#if defined(BOOTLOADER_BUILD) || defined(CONFIG_FREERTOS_UNICORE) || !SOC_DPORT_WORKAROUND
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return _DPORT_REG_READ(reg);
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#else
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uint32_t apb;
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__asm__ __volatile__ (\
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"movi %[APB], "XTSTR(0x3ff40078)"\n"\
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"l32i %[APB], %[APB], 0\n"\
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"l32i %[REG], %[REG], 0\n"\
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: [APB]"=a"(apb), [REG]"+a"(reg)\
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: \
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: "memory" \
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);
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return reg;
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#endif
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}
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