esp32: Remove obsolete IDF v3 code wrapped in MICROPY_ESP_IDF_4.

Signed-off-by: Damien George <damien@micropython.org>

ports/esp32/esp32_ulp.c

@@ -85,11 +85,7 @@ STATIC const mp_rom_map_elem_t esp32_ulp_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_set_wakeup_period), MP_ROM_PTR(&esp32_ulp_set_wakeup_period_obj) },
     { MP_ROM_QSTR(MP_QSTR_load_binary), MP_ROM_PTR(&esp32_ulp_load_binary_obj) },
     { MP_ROM_QSTR(MP_QSTR_run), MP_ROM_PTR(&esp32_ulp_run_obj) },
-    #if !MICROPY_ESP_IDF_4
-    { MP_ROM_QSTR(MP_QSTR_RESERVE_MEM), MP_ROM_INT(CONFIG_ULP_COPROC_RESERVE_MEM) },
-    #else
     { MP_ROM_QSTR(MP_QSTR_RESERVE_MEM), MP_ROM_INT(CONFIG_ESP32_ULP_COPROC_RESERVE_MEM) },
-    #endif
 };
 STATIC MP_DEFINE_CONST_DICT(esp32_ulp_locals_dict, esp32_ulp_locals_dict_table);
 

ports/esp32/main.c

@@ -37,11 +37,7 @@
 #include "esp_task.h"
 #include "soc/cpu.h"
 #include "esp_log.h"
-#if MICROPY_ESP_IDF_4
 #include "esp32/spiram.h"
-#else
-#include "esp_spiram.h"
-#endif
 
 #include "py/stackctrl.h"
 #include "py/nlr.h"

ports/esp32/modesp.c

@@ -29,9 +29,6 @@
 
 #include <stdio.h>
 
-#if !MICROPY_ESP_IDF_4
-#include "rom/gpio.h"
-#endif
 #include "esp_log.h"
 #include "esp_spi_flash.h"
 

ports/esp32/modmachine.c

@@ -32,15 +32,9 @@
 
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
-#if MICROPY_ESP_IDF_4
 #include "esp32/rom/rtc.h"
 #include "esp32/clk.h"
 #include "esp_sleep.h"
-#else
-#include "rom/ets_sys.h"
-#include "rom/rtc.h"
-#include "esp_clk.h"
-#endif
 #include "esp_pm.h"
 #include "driver/touch_pad.h"
 

ports/esp32/modsocket.c

@@ -55,18 +55,6 @@
 #include "lwip/igmp.h"
 #include "esp_log.h"
 
-#if !MICROPY_ESP_IDF_4
-#define lwip_bind lwip_bind_r
-#define lwip_listen lwip_listen_r
-#define lwip_accept lwip_accept_r
-#define lwip_setsockopt lwip_setsockopt_r
-#define lwip_fnctl lwip_fnctl_r
-#define lwip_recvfrom lwip_recvfrom_r
-#define lwip_write lwip_write_r
-#define lwip_sendto lwip_sendto_r
-#define lwip_close lwip_close_r
-#endif
-
 #define SOCKET_POLL_US (100000)
 #define MDNS_QUERY_TIMEOUT_MS (5000)
 #define MDNS_LOCAL_SUFFIX ".local"

ports/esp32/mpconfigport.h

@@ -8,10 +8,6 @@
 #include <alloca.h>
 #include "esp_system.h"
 
-#if !MICROPY_ESP_IDF_4
-#include "rom/ets_sys.h"
-#endif
-
 // object representation and NLR handling
 #define MICROPY_OBJ_REPR                    (MICROPY_OBJ_REPR_A)
 #define MICROPY_NLR_SETJMP                  (1)

ports/esp32/mphalport.c

@@ -32,12 +32,7 @@
 
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
-
-#if MICROPY_ESP_IDF_4
 #include "esp32/rom/uart.h"
-#else
-#include "rom/uart.h"
-#endif
 
 #include "py/obj.h"
 #include "py/objstr.h"

ports/esp32/mpthreadport.c

@@ -34,9 +34,6 @@
 #include "mpthreadport.h"
 
 #include "esp_task.h"
-#if !MICROPY_ESP_IDF_4
-#include "freertos/semphr.h"
-#endif
 
 #if MICROPY_PY_THREAD