1  // Copyright 2020 Espressif Systems (Shanghai) PTE LTD
 2  //
 3  // Licensed under the Apache License, Version 2.0 (the "License");
 4  // you may not use this file except in compliance with the License.
 5  // You may obtain a copy of the License at
 6  //
 7  //     http://www.apache.org/licenses/LICENSE-2.0
 8  //
 9  // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  #include <stdio.h>
16  #include "esp_err.h"
17  #include "esp_log.h"
18  #include "trax.h"
19  #include "soc/dport_reg.h"
20  #include "sdkconfig.h"
21  
22  #define TRACEMEM_MUX_PROBLK0_APPBLK1    0
23  #define TRACEMEM_MUX_BLK0_ONLY          1
24  #define TRACEMEM_MUX_BLK1_ONLY          2
25  #define TRACEMEM_MUX_PROBLK1_APPBLK0    3
26  
27  static const char* __attribute__((unused)) TAG = "trax";
28  
29  int trax_enable(trax_ena_select_t which) 
30  {
31  #ifndef CONFIG_ESP32_TRAX
32      ESP_LOGE(TAG, "Trax_enable called, but trax is disabled in menuconfig!");
33      return ESP_ERR_NO_MEM;
34  #endif
35  #ifndef CONFIG_ESP32_TRAX_TWOBANKS
36      if (which == TRAX_ENA_PRO_APP || which == TRAX_ENA_PRO_APP_SWAP) return ESP_ERR_NO_MEM;
37  #endif
38      if (which == TRAX_ENA_PRO_APP || which == TRAX_ENA_PRO_APP_SWAP) {
39          DPORT_WRITE_PERI_REG(DPORT_TRACEMEM_MUX_MODE_REG, (which == TRAX_ENA_PRO_APP_SWAP)?TRACEMEM_MUX_PROBLK1_APPBLK0:TRACEMEM_MUX_PROBLK0_APPBLK1);
40      } else {
41          DPORT_WRITE_PERI_REG(DPORT_TRACEMEM_MUX_MODE_REG, TRACEMEM_MUX_BLK0_ONLY);
42      }
43      DPORT_WRITE_PERI_REG(DPORT_PRO_TRACEMEM_ENA_REG, (which == TRAX_ENA_PRO_APP || which == TRAX_ENA_PRO_APP_SWAP || which == TRAX_ENA_PRO));
44      DPORT_WRITE_PERI_REG(DPORT_APP_TRACEMEM_ENA_REG, (which == TRAX_ENA_PRO_APP || which == TRAX_ENA_PRO_APP_SWAP || which == TRAX_ENA_APP));
45      return ESP_OK;
46  }