64 lines
2.2 KiB
C
64 lines
2.2 KiB
C
// Copyright 2015-2016 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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//
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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 <stdio.h>
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#include "esp_log.h"
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#include "esp_err.h"
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#include "xtensa-debug-module.h"
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#include "eri.h"
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#include "trax.h"
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#include "sdkconfig.h"
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#if defined(CONFIG_ESP32_TRAX) || defined(CONFIG_ESP32S2_TRAX)
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#define WITH_TRAX 1
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#endif
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static const char* TAG = "trax";
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int trax_start_trace(trax_downcount_unit_t units_until_stop)
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{
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#if !WITH_TRAX
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ESP_LOGE(TAG, "Trax_start_trace called, but trax is disabled in menuconfig!");
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return ESP_ERR_NO_MEM;
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#endif
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uint32_t v;
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if (eri_read(ERI_TRAX_TRAXSTAT)&TRAXSTAT_TRACT) {
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ESP_LOGI(TAG, "Stopping active trace first.");
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//Trace is active. Stop trace.
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eri_write(ERI_TRAX_DELAYCNT, 0);
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eri_write(ERI_TRAX_TRAXCTRL, eri_read(ERI_TRAX_TRAXCTRL)|TRAXCTRL_TRSTP);
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//ToDo: This will probably trigger a trace done interrupt. ToDo: Fix, but how? -JD
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eri_write(ERI_TRAX_TRAXCTRL, 0);
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}
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eri_write(ERI_TRAX_PCMATCHCTRL, 31); //do not stop at any pc match
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v=TRAXCTRL_TREN | TRAXCTRL_TMEN | TRAXCTRL_PTOWS | (1<<TRAXCTRL_SMPER_SHIFT);
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if (units_until_stop == TRAX_DOWNCOUNT_INSTRUCTIONS) v|=TRAXCTRL_CNTU;
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//Enable trace. This trace has no stop condition and will just keep on running.
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eri_write(ERI_TRAX_TRAXCTRL, v);
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return ESP_OK;
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}
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int trax_trigger_traceend_after_delay(int delay)
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{
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#if !WITH_TRAX
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ESP_LOGE(TAG, "Trax_trigger_traceend_after_delay called, but trax is disabled in menuconfig!");
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return ESP_ERR_NO_MEM;
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#endif
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eri_write(ERI_TRAX_DELAYCNT, delay);
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eri_write(ERI_TRAX_TRAXCTRL, eri_read(ERI_TRAX_TRAXCTRL)|TRAXCTRL_TRSTP);
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return ESP_OK;
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}
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