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https://github.com/espressif/esp-idf.git
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e5b280f173
A new method of workaround an error with DPORT is to ensure that the APB is read and followed by the DPORT register without interruptions and pauses. This fix places this implementation in the IRAM to exclude errors associated with the cache miss.
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
// Copyright 2010-2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <sdkconfig.h>
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#ifndef _ESP_DPORT_ACCESS_H_
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#define _ESP_DPORT_ACCESS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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void esp_dport_access_stall_other_cpu_start(void);
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void esp_dport_access_stall_other_cpu_end(void);
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void esp_dport_access_int_init(void);
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void esp_dport_access_int_pause(void);
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void esp_dport_access_int_resume(void);
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void esp_dport_access_read_buffer(uint32_t *buff_out, uint32_t address, uint32_t num_words);
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uint32_t esp_dport_access_reg_read(uint32_t reg);
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uint32_t esp_dport_access_sequence_reg_read(uint32_t reg);
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//This routine does not stop the dport routines in any way that is recoverable. Please
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//only call in case of panic().
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void esp_dport_access_int_abort(void);
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#if defined(BOOTLOADER_BUILD) || defined(CONFIG_FREERTOS_UNICORE) || !defined(ESP_PLATFORM)
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#define DPORT_STALL_OTHER_CPU_START()
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#define DPORT_STALL_OTHER_CPU_END()
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#define DPORT_INTERRUPT_DISABLE()
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#define DPORT_INTERRUPT_RESTORE()
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#else
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#define DPORT_STALL_OTHER_CPU_START() esp_dport_access_stall_other_cpu_start()
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#define DPORT_STALL_OTHER_CPU_END() esp_dport_access_stall_other_cpu_end()
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#define DPORT_INTERRUPT_DISABLE() unsigned int intLvl = XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL)
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#define DPORT_INTERRUPT_RESTORE() XTOS_RESTORE_JUST_INTLEVEL(intLvl)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ESP_DPORT_ACCESS_H_ */
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