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